JPH07282790A - Battery unit and electric equipment having it - Google Patents

Abstract

PURPOSE:To form a battery unit capable of housing primary and secondary batteries interchangeably, and also allowing charging for the secondary battery when it is housed and preventing charging for the primary battery when it is housed, in a battery unit to be connected to an electric equipment main body. CONSTITUTION:A battery housing chamber 30 is formed in a battery housing case 31, and therein a pair of main electrode pieces 4 and 44, thereto both electrodes of a battery are to be contacted when the primary or the secondary battery is housed, and a pair of auxiliary electrode pieces 46 and 47, thereto both charging electrodes of a battery are to be contacted respectively when the secondary battery is housed, are arranged. A pair of transmission terminals 49 and 50, connected to the pair of the main electrode pieces 4 and 44 respectively, is arranged in the jointing surface of the battery housing case 31 with an electric equipment main body, and also a pair of charging terminals 34 and 35, connected to the pair of the auxiliary electrode pieces 46 and 47 respectively, is provided on the outer surface of the case 31.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery unit for supplying electric power by being connected to a main body of an electric device such as a telephone or a video camera, and a structure of an electric device equipped with the battery unit.

[0002]

2. Description of the Related Art Generally, a primary battery such as an alkaline dry battery is widely used as a DC power source in various electric devices such as mobile phones and video cameras. For example, in a mobile phone, a 1.5V alkaline alkaline battery is used. A plurality of dry batteries are connected in series and loaded in the telephone. In addition, secondary batteries such as Ni-Cd batteries, which have the same shape as the primary battery and can be loaded into electrical equipment with compatibility with the primary battery, have been put into practical use, and such secondary batteries are loaded instead of the primary battery. By doing so, repeated use by charging becomes possible. Charging is performed using a dedicated charger. Furthermore, there is known a battery unit that accommodates either one of a primary battery and a secondary battery and is detachably attached to a device body, and there are two types, a primary battery dedicated and a secondary battery dedicated. For example, in a small-sized video camera, a battery unit containing a secondary battery is detachably attached to the camera body, and the unit can be detached from the camera body and connected to a commercial power source for charging. It is known that an electric device having a battery unit with a built-in secondary battery has a function of displaying the remaining amount of the battery, and the display can be used as a reference for charging time.

[0003]

However, in the conventional battery unit, one dedicated to one battery should be loaded with a primary battery, and one dedicated to a secondary battery should be loaded with a secondary battery. There was a problem that it was inconvenient because it was necessary to use different batteries. If a conventional battery unit dedicated to a primary battery is loaded with a compatible secondary battery instead of the primary battery, power can be supplied to the device body, but the battery unit is for charging. The secondary battery in the unit cannot be charged because it does not have the terminal. Further, a conventional battery unit dedicated to a secondary battery is provided with a charging terminal, but when a primary battery is loaded in the battery unit and the primary battery is erroneously charged, heat is generated. Etc. are dangerous. Here, since the fact that the primary battery is loaded cannot be known unless the battery is taken out and inspected, it is difficult to avoid the above erroneous charging.

Further, in an electric device having a function of displaying the remaining amount of the battery using a battery unit dedicated to the secondary battery as a power source, the remaining amount of the secondary battery can be displayed, but the primary battery is used instead of the secondary battery. When the is loaded, there is a problem that the remaining amount display has an error due to the difference in battery characteristics.

By the way, as a secondary battery to be housed in a conventional battery unit, a positive electrode (51) and a negative electrode (52) for discharging are provided on both end surfaces as shown in FIG. Positive electrode (54) and negative electrode (5) for charging
A nickel-hydrogen battery has been developed in which the 5) and the electrode (53) for temperature detection are arranged. According to the secondary battery, electric power can be supplied from the positive electrode (51) and the negative electrode (52) for discharging. Also, it is possible to charge using the positive electrode (54) and the negative electrode (55) for charging, at the same time,
Using the temperature detection electrode (53) to detect overheating during charging,
You can be safe.

Therefore, an object of the present invention is that the conventional primary battery and the secondary battery shown in FIG. 4 can be stored interchangeably, and when the secondary battery is stored, the secondary battery can be charged and the primary battery is (EN) A battery unit having a structure in which charging of the battery is prevented when the battery is housed.

Another object of the present invention is which type of battery is stored in a battery unit in which one of two types of batteries, a primary battery and a secondary battery, is stored compatible with the other. It is to provide a battery unit having a structure capable of automatically determining

Still another object of the present invention is to enable the display of the remaining amount of at least a secondary battery in an electric device equipped with a battery unit as described above, depending on the type of the battery loaded. At the same time, it is to provide an electric device in which an inaccurate remaining amount display is not performed when a primary battery is loaded.

[0009]

In the battery unit according to the present invention, as shown in FIGS. 1 (a) and 1 (b), a battery storage case (3
In 1), a battery storage chamber (30) in which either one of the primary battery or the secondary battery is to be stored is formed, and the battery storage chamber (30) contains the primary battery or the secondary battery at the time of storage. A pair of main electrode pieces (4) (44) to be brought into contact with both electrodes of the battery are arranged, and at a position deviated from the main electrode pieces (4) (44) when the secondary battery is stored A pair of auxiliary electrode pieces (46) and (47) to which both charging electrodes should contact are provided. In addition, a pair of power transmission terminals (49) (50) electrically connected to the pair of main electrode pieces (4) (44) are provided on the joint surface of the battery housing case (31) with the main body of the electric device. On the outer surface of the battery storage case (31) that is placed and exposed to the outside when connected to the main body of the electric device,
A pair of charging terminals (34) (35) electrically connected to the pair of auxiliary electrode pieces (46) (47) are provided.

In a more specific configuration of the above battery unit, a transmission terminal for battery identification is arranged on the joint surface of the battery housing case (31) with the main body of the electric equipment in parallel with the pair of power transmission terminals (49) and (50). (48) is provided, and the transmission terminal (48) is one of the pair of auxiliary electrode pieces (46) and (47), for example, as shown in FIG.
As described above, it is electrically connected to the minus auxiliary electrode piece (47).

Further, an electric device equipped with the battery unit according to the present invention comprises a battery unit having the above-mentioned specific structure and an electric device main body which operates by receiving power supply from the battery unit. Here, the battery unit (3) is shown in FIG.
As shown in (a) and (b), on the joint surface of the battery storage case (31) with the main body of the electric device, the pair of power transmission terminals (49) and (50) are arranged side by side,
A transmission terminal (48) for battery discrimination, which is electrically connected to one of the pair of auxiliary electrode pieces (46) (47), is arranged. On the other hand, a pair of power receiving terminals for contacting the pair of power transmitting terminals (49) and (50) of the battery unit (3) and receiving power from the power transmitting terminals (49) and (50) to the electric device body. Terminals (82) (83),
The receiving terminal (8) with which the transmitting terminal (48) for battery identification should be in contact
1), a memory unit that stores characteristic data of the primary battery and / or the secondary battery to be housed in the battery unit (3), and the battery unit () in accordance with the voltage level of the receiving terminal (81). 3) determining means for determining the type of battery in the battery, and characteristic data of the battery in the battery unit (3) is read from the memory means according to the determined type of battery, and the characteristic data and the power transmission terminal ( Comparing with the voltage of (49), the calculation means for calculating the battery consumption state, and the output means such as a display (14), a speaker (15) for outputting the calculated battery consumption state are provided. ing.

[0012]

In the battery unit having the above structure, either the primary battery or the secondary battery can be housed in the battery housing chamber (30) of the battery housing case (31) according to the user's choice. By attaching the battery unit to the main body of the electric device, a pair of power transmission terminals for power supply is provided.
(49) and (50) come into contact with the pair of power receiving terminals on the electric device main body side, respectively, and electric power is supplied. For example, when a primary battery is stored in the battery storage chamber (30) as shown in FIGS. 2 (a) and 2 (b), both electrodes of the primary battery come into contact with the main electrode pieces (4) (44),
The voltage of the primary battery is applied between the power transmission terminals (49) and (50) for power supply. At this time, since both electrodes of the primary battery do not come into contact with the auxiliary electrode pieces (46) (47) for charging, a circuit is formed between these auxiliary electrode pieces (46) (47) and the primary battery. Even if a charger is connected to the pair of charging terminals (34) and (35), the primary battery will not be erroneously charged. On the other hand, when the secondary battery is stored in the battery storage chamber (30) as shown in FIGS. 3 (a) and 3 (b), both electrodes of the secondary battery are respectively connected to the main electrode pieces (4) (4).
In contact with 4), the voltage of the secondary battery is applied between the power transmission terminals (49) and (50) for power supply. Further, since both charging electrodes of the secondary battery come into contact with the pair of auxiliary electrode pieces (46) (47), the pair of charging terminals (34) (while retaining the secondary battery in the battery storage case (31). If a charger is connected to 35), the rechargeable battery can be charged.

In the specific configuration including the transmission terminal (48) for battery discrimination, when the primary battery is stored in the battery storage chamber (30), the auxiliary electrode pieces (46) (47) are replaced by the primary battery. On the other hand, when the secondary battery is stored in the battery storage chamber (30), the auxiliary electrode pieces (46) and (47) contact both electrodes of the secondary battery. The potential of the transmission terminal (48) will show different values depending on the type of battery. Therefore, the type of the battery in the battery storage chamber (30) can be determined based on the potential of the transmission terminal (48).

In an electric device having the above battery unit, either the primary battery or the secondary battery is housed in the battery unit (3) according to the user's arbitrary selection. Then, the electric power of the battery in the battery unit is supplied to the device body through the pair of power transmission terminals (49) (50) on the unit side and the pair of power reception terminals (82) (83) on the device side. . or,
The transmission terminal (48) of the battery unit (3) comes into contact with the reception terminal (81) of the device body, and the potential of the transmission terminal (48) becomes the reception terminal (81).
Is applied to the discrimination means via. The determination means determines the type of battery according to the applied potential and sends the determination result to the comparison calculation means. In response, the comparison calculation means
Characteristic data of the battery housed in the battery unit (3)
(See FIG. 11) is read from the memory means, and the characteristic data and the voltage of the transmission terminal (48) are compared with each other to calculate the consumption state such as the remaining capacity of the battery. Calculated battery depletion status,
For example, the remaining capacity is displayed on the display (14), or when the remaining capacity falls to the level that requires charging,
A warning sound is output from the speaker (15). Incidentally, when only the characteristic data of the secondary battery is stored in the memory means and the characteristic data of the primary battery does not exist, only when the secondary battery is accommodated in the battery unit (3), the state of consumption of the battery is reduced. Will be output. This prevents incorrect display of the remaining capacity.

[0015]

According to the battery unit of the present invention, either the primary battery or the secondary battery can be arbitrarily selected and stored in the battery storage chamber, and when the secondary battery is stored, the battery can be charged. This is convenient because it is possible, and it is safe because the battery is prevented from being charged when the primary battery is housed. In a battery unit equipped with a transmission terminal for battery determination, it is automatically determined which type of battery is stored.By displaying the determination result, the user can display the battery in the battery unit. It is possible to recognize the type of battery without taking out the battery. Furthermore,
In an electric device equipped with the battery unit according to the present invention, the consumption state of the battery is accurately calculated and output according to the type of the battery loaded, so that, for example, when a primary battery is loaded However, there is no inaccurate remaining amount display.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example in which the present invention is applied to a mobile phone will be described below in detail with reference to the drawings. As shown in FIG. 5, the mobile phone (1) has a battery unit (3) detachably attached to the phone body (10). The phone body (10) has a push button (13) for designating a telephone number, a display (14) for displaying the telephone number and the battery level, and a battery level warning sound on the surface of the casing (11). It is equipped with a speaker (15) for emitting. Further, the telephone body (10) has a lid (12) that is openably and closably supported to prevent erroneous operation of the push button (13) when not in use, and by opening the lid (12), Operation becomes possible. In the battery unit (3), three AAA alkaline batteries as a primary battery or the secondary battery (5) shown in FIG. 4 is selectively stored. The secondary battery (5) is a nickel-hydrogen battery having substantially the same size and shape as the state in which three AAA alkaline batteries are arranged side by side, and has a capacity of 3.6V-370mAh.
The secondary battery (5) has a built-in temperature detecting thermistor R as shown in FIG. 3 (b), and is configured to detect a temperature rise during charging based on a change in the resistance value of the thermistor R. Have

As shown in FIG. 6, on the joint surface between the telephone body (10) and the battery unit (3), there are three sets of terminals that can contact each other.
(81) (48), (82) (49), and (83) (50) are provided, and when these terminals contact each other, the battery unit
It is possible to supply electric power from (3) to the telephone body (10) and distinguish the battery housed in the battery unit (3). or,
On the surface of the battery unit (3) are three terminals (33) (3
4) (35) is provided and charging is performed using these terminals. Specific configurations of these terminals will be described later.

When the mobile phone (1) is not in use, FIG.
As shown in, the mobile phone (1) is attached to the charging holder (2). As a result, the three terminals of the mobile phone (1) are
Charger with (33) (34) (35) built into the charging holder (2)
When the secondary battery is connected to the battery unit (21) and the secondary battery is stored in the battery unit (3), the battery unit (3) is charged.

The battery storage case (31) is constructed by covering the battery storage case (31) with a cover (32) as shown in FIG. 4, and covers a plurality of hooks (37) projecting from the battery storage case (31). Both are integrated by engaging with the recess (38) formed in (32). At this time, the above-mentioned 3 provided in the battery storage case (31)
The three terminals (33), (34) and (35) penetrate through the three openings (36), (36) and (36) formed in the cover (32) to expose these terminal surfaces to the outside as shown in FIG. .

First, referring to FIGS. 1 (a) (b) to 3 (a) (b), a plurality of electrode pieces arranged in the battery storage case (31),
After explaining the arrangement of terminals and the mutual connection state,
The detailed configuration of the battery storage case (31) will be described with reference to FIGS. 8 and 9.

In FIGS. 1 (a) (b) to 3 (a) (b),
(a) shows the top view of the battery storage case (31), (b) has shown the wiring diagram. As shown in FIGS. 1 (a) and 1 (b), the battery housing case (31) has a positive main electrode piece (4) and a first plus relay at one end of the peripheral wall forming the battery housing chamber (30). Electrode piece (4
0) and the second plus relay electrode piece (41) are arranged, the first minus relay electrode piece (42) formed on the coil spring is provided at the other peripheral wall end facing the electrode pieces. A second minus relay electrode piece (43) and a minus main electrode piece (44) are arranged. Also, on the bottom surface of the battery storage chamber (30), corresponding to the three electrodes (53), (54) and (55) of the secondary battery (5) shown in FIG.
Auxiliary electrode piece for temperature detection (45), positive auxiliary electrode piece for charging (4
6) and the negative auxiliary electrode piece (47) are arranged.

On the joint surface of the battery housing case (31) with the main body of the telephone, the above-mentioned three terminals, that is, the transmission terminals (4
8), a positive power transmission terminal (49) for power supply and a negative power transmission terminal (50) are arranged, and a negative auxiliary electrode piece (47) for charging, a positive main electrode piece (4) and a negative main electrode piece (44), respectively. )
Connected with.

Further, the above-mentioned three terminals provided on the surface of the battery housing case (31), that is, the temperature detecting terminal (33), the positive charging terminal (34) and the negative charging terminal (35) are respectively for temperature detection. It is connected to the auxiliary electrode piece (45), the charging positive auxiliary electrode piece (46) and the negative auxiliary electrode piece (47).

Therefore, as shown in FIGS. 2 (a) and 2 (b), the primary battery (56) consisting of three alkaline dry batteries in the battery storage chamber (30).
If the batteries are housed, both electrodes of each dry cell will have electrode pieces (4) (40)
By contacting with (44), a potential difference of 4.5 V is produced between the positive main electrode piece (4) and the negative main electrode piece (44) at both ends. The electric power due to the potential difference is supplied to the telephone body through the power transmission terminals (49) and (50). At this time, the electrode of the primary battery (56) does not come into contact with the auxiliary electrode pieces (46) (47) of the battery storage case (31), so even if a charger is connected to the charging terminals (34) (35), the circuit Remains open and no false charge is made to the primary battery (56).

As shown in FIGS. 3 (a) and 3 (b), when the secondary battery (5) is stored in the battery storage chamber (30), the positive electrode (51) and the negative electrode of the secondary battery (5) are charged. The electrodes (52) come into contact with the positive main electrode piece (4) and the negative main electrode piece (44), respectively, so that a potential difference of 3.6 V is produced between the main electrode pieces (4) and (44).
The electric power due to the potential difference is supplied to the telephone body through the power transmission terminals (49) and (50). In addition, the temperature detection electrode (5) of the secondary battery (5)
3), the charging positive electrode (54) and the negative electrode (55) are respectively the temperature detecting auxiliary electrode piece (45), the charging positive auxiliary electrode piece (46) and the negative auxiliary electrode piece (of the battery unit (3)). 47), the secondary battery (5) can be charged by connecting the charger to the charging terminals (34) and (35).
Further, by detecting the change in the resistance value of the thermistor R in the secondary battery (5) using the temperature detecting electrode (53), it is possible to prevent the secondary battery (5) from overheating during charging.

As shown in FIGS. 8 and 9, a battery storage case
On the back surface of (31), strip-shaped first and second lead plates (6) (61)
And a T-shaped third lead plate (62) and a strip-shaped fourth lead plate
(63) is fixed. The above-mentioned auxiliary electrode pieces (45) (46) (47) are integrally formed at one end of each of the first to third lead plates (6) (61) (62) to Auxiliary electrode piece (45)
(46) The tips of (47) are exposed to the inside of the case through the holes of the battery storage case (31). First to third lead plates (6) (61) (6
At the other end of 2), the temperature detecting terminal (33) and the charging terminals (34) and (35) are integrally formed. In addition, at the central portion of the third lead plate (62), the transmission terminal (4
8) is projectingly provided, and the tip of the terminal is exposed from the hole of the battery storage case (31) to the joint surface side with the telephone body.

As shown in FIG. 9, both ends of the fourth lead plate (63) extend to the inner wall of the battery storage chamber (30) and the joint surface with the telephone body, respectively, and the plus main electrode piece ( 4) and the positive power transmission terminal (49) are integrally molded.

Further, three lead wires (65), (66) and (67) extend on the back surface of the battery storage case (31), and the first lead wire (6
The negative power transmission terminal (50) for power supply and the negative main electrode piece (44) are mutually connected by 5), and the second positive relay electrode piece (41) and the second negative relay electrode piece are connected by the second lead wire (66). (43) are connected to each other and the first positive relay electrode piece (40) and the first negative relay electrode piece (42) are connected by the third lead wire (67).
Are connected to each other. As a result, the connection state between the plurality of electrode pieces or terminals described with reference to FIGS. 1 to 3 is specifically realized.

By the connection using the lead wire, as shown in FIG.
Since the negative electrode pieces (42), (43) and (44) of the coil spring are arranged on one side of the battery storage chamber (30) as shown in FIG.
As shown in (a), all the primary batteries (56) are oriented in the same direction,
Not only can it be housed in (0) but also the secondary battery (5) as shown in FIG. 3 (a), the electrode pieces (42) (4)
(3) The storage operation can be performed by pressing the end surfaces of the secondary battery (5) at the same time as (44), and storage is easy.

FIG. 10 shows a secondary battery in the battery unit (3).
The internal structure of the mobile telephone (1) in the state which accommodated (5) is shown. The phone body (10) has a positive power receiving terminal (82)
And a transmitter / receiver circuit (75) to which electric power is supplied through the minus power receiving terminal (83), and a call is made by the operation of the circuit.

Further, the telephone main body (10) has an operation discriminating circuit which operates according to the potentials of the receiving terminal (81) and the power receiving terminal (82).
(7) is built in, and the remaining capacity of the primary battery or the secondary battery housed in the battery unit (3) is detected by the operation determination circuit (7), and the remaining capacity is displayed (14).
Is displayed in. In the case of a secondary battery, when the remaining capacity falls below a predetermined level, a warning sound for prompting charging is emitted from the speaker (15).

The operation discriminating circuit (7) comprises a control circuit (70), a comparison operation circuit (71) and a memory circuit (72), and the control circuit (70)
The signal line between the receiving terminal (81) and the receiving terminal (81)
cc is connected. In addition, the memory circuit (72) includes a primary battery data storage memory (73) and a secondary battery data storage memory (74), and these memories store the discharge of the primary battery and the secondary battery as shown in FIG. Changes in voltage with time (characteristic data) are stored in the form of a table or a function.

When the primary battery is housed in the battery unit (3) (see FIG. 2B), the transmission terminal for battery discrimination as described above.
Since (48) is in the open state, the control circuit (70) of FIG.
Is applied with a positive potential (logic level "high") from the power source Vcc. This allows the control circuit (70) to recognize the primary battery. On the other hand, when the secondary battery (5) is housed in the battery unit (3) (see FIG. 3B), as described above, the battery discriminating transmission terminal (48) has a charging minus auxiliary electrode piece ( Since the negative electrode of the secondary battery (5) is connected via 47), the receiving terminal (81) is grounded,
A ground potential (logic level "low") is applied to the control circuit (70). This allows the control circuit (70) to recognize the secondary battery. The control circuit (70) sends the recognized battery type as data to the comparison calculation circuit (71).

In response to this, the comparison operation circuit (71) is a primary battery data storage memory for the memory circuit (72) in the case of a primary battery.
From (73), in the case of secondary battery, secondary battery data storage memory
Each characteristic data is read from (74). At this time, the voltage of the positive power transmission terminal (49) for power supply of the battery unit (3) is applied to the comparison operation circuit (71) via the power reception terminal (82). Therefore, the comparison calculation circuit (71) compares the read characteristic data with the applied voltage to calculate the current consumption state of the stored battery. For example, in the case of a secondary battery, as shown in FIG. 11, the discharge time T ₁ according to the current voltage V ₁ is different from the discharge time T ₀ up to the minimum voltage V _{0 that} needs to be charged.
And read the remaining capacity of the battery to the discharge allowance time (T ₀ −V
₁ ) and sends the calculation result to the control circuit (70). When the current voltage V ₁ falls below the minimum voltage V ₀ , a warning signal indicating this is sent to the control circuit (70).
In response to this, the control circuit (70) displays the discharge margin time of the battery on the display (14) or emits a warning sound from the speaker (15) based on the warning signal.

As described above, the battery unit (3) according to the present invention
According to this, either the primary battery (56) or the secondary battery (5) can be arbitrarily selected and stored in the battery storage case (31), and the secondary battery can be charged for each unit. On the other hand, erroneous charging of the primary battery can be prevented. Further, according to the mobile phone (1) including the battery unit (3) according to the present invention, the type of battery is automatically determined,
Since an appropriate remaining amount is displayed according to the judgment result,
The user can know the proper charging time in advance and can charge the battery without delay even if the user neglects to charge the battery carelessly.

The above description of the embodiments is for explaining the present invention, and should not be construed as limiting the invention described in the claims or limiting the scope. Further, the configuration of each part of the present invention is not limited to the above embodiment, but various modifications can be made within the technical scope described in the claims.

For example, in the embodiment shown in FIG. 10, both the primary battery data and the secondary battery data are stored in the memory circuit (72), but in general, the performance of primary batteries varies depending on the type, and the characteristic data Since it is difficult to identify the memory cell (72), the secondary battery data storage memory (74)
If only the primary battery is stored and only the primary battery is stored, the display of the remaining battery amount may be omitted based on the recognition result. Further, it is possible to omit either the display of the remaining amount by the display (14) or the generation of the warning sound by the speaker (15). Further, it goes without saying that the present invention can be applied not only to telephones but also to various electric devices such as video cameras and portable televisions.

[Brief description of drawings]

FIG. 1 is a plan view and a wiring diagram of a battery unit.

FIG. 2 is a plan view and a wiring diagram of a battery unit when the primary battery is stored.

FIG. 3 is a plan view and a wiring diagram of the battery unit when the secondary battery is stored.

FIG. 4 is an exploded perspective view of a battery unit when a secondary battery is stored.

FIG. 5 is a perspective view showing an appearance of a mobile phone in a use state.

FIG. 6 is a perspective view showing a state where the battery unit is removed from the main body of the mobile phone.

FIG. 7 is a perspective view of a mobile phone set in a charging holder.

FIG. 8 is a perspective view of the battery storage case seen from the back side.

9 is a perspective view of the same as seen from a direction different from FIG.

FIG. 10 is a block diagram showing an internal circuit of a mobile phone.

FIG. 11 is a graph showing characteristic data of primary batteries and secondary batteries.

[Explanation of symbols]

 (1) Mobile phone (2) Charging holder (3) Battery unit (5) Secondary battery (7) Calculation discrimination circuit (11) Main body casing (21) Charger (31) Battery storage case (56) Primary battery

Claims (3)

[Claims] 1. A battery unit which is connected to an electric device body and supplies electric power to the electric device body, wherein either a primary battery or a secondary battery is housed in a battery housing case (31). Forming a battery storage chamber (30), and the battery storage chamber (3
In (0), a pair of main electrode pieces (4) (44) to be contacted by both electrodes of the battery when the primary battery or the secondary battery is housed are arranged, and the main electrode pieces (4) (44) ), A pair of auxiliary electrode pieces (46) (47) to which both electrodes for charging the secondary battery should come into contact when the secondary battery is stored, and the battery storage case (31)
The main electrode piece of the pair of main electrode
(4) A pair of power transmission terminals (49) electrically connected to (44)
(50) is arranged and is electrically connected to the pair of auxiliary electrode pieces (46) (47) on the outer surface of the battery housing case (31) exposed to the outside in the state of being connected to the electric device body. Battery unit provided with a pair of charged terminals (34) (35) for charging. 2. A transmission terminal (48) for discriminating a battery is arranged on the joint surface of the battery housing case (31) with the main body of the electric device in parallel with the pair of power transmission terminals (49) (50). The transmission terminal (48)
The battery unit according to claim 1, wherein is electrically connected to any one of the pair of auxiliary electrode pieces (46) (47). 3. An electric equipment main body that operates by receiving supply of electric power, and a battery unit (3) detachably attached to the electric equipment main body to supply electric power. The battery unit (3) comprises: In the battery storage case (31), a battery storage chamber (30) in which either one of the primary battery and the secondary battery is to be stored is formed, and the battery storage chamber (30) has a primary battery or a secondary battery. A pair of main electrode pieces that both electrodes of the battery should contact when the battery is stored
(4) (44) is provided, and a pair of auxiliary electrodes to be charged with both electrodes for charging the secondary battery at the time of accommodating the secondary battery at positions deviated from the main electrode pieces (4) (44). Electrode pieces (46) and (47) are provided, and the pair of main electrode pieces (4) and (44) are electrically connected to the joint surface of the battery housing case (31) with the main body of the electric device. A pair of power transmission terminals (49) (50) and the pair of auxiliary electrode pieces
(46) A battery storage case (31) that is exposed while being attached to the main body of the electric device, along with a transmission terminal (48) for battery discrimination that is electrically connected to either one of (46) (47) On the outer surface, a pair of charging terminals (34) and (35) for charging, which are electrically connected to the pair of auxiliary electrode pieces (46) and (47), respectively, are provided. 3) A pair of power receiving terminals (82) and (83) for contacting the pair of power transmitting terminals (49) and (50) to receive power supply from the power transmitting terminals (49) and (50), and the battery discrimination. Receiver terminal (8)
1), a memory unit storing characteristic data of the primary battery and / or the secondary battery to be housed in the battery unit (3), and the battery unit () in accordance with the voltage level of the receiving terminal (81). 3)
Determination means for determining the type of battery in the battery unit, and characteristic data of the battery in the battery unit (3) is read from the memory means according to the determined type of battery, and the characteristic data and the power transmission terminal (49) are read. An electric device comprising a battery unit provided with a comparison calculation means for calculating the consumed state of the battery by comparing with the voltage of the battery and an output means for outputting the calculated consumed state of the battery.