JPH05146097A - Electronic appliance provided with detachable battery - Google Patents

Abstract

PURPOSE:To obtain an electronic appliance provided with a continuously operable detachable battery in which the battery can be replaced without interrupting the operation of the electronic appliance. CONSTITUTION:The electronic appliance comprises a body 2 chargeable with an external power supply, a first detachable battery 1, a second rechargeable battery 4 built in the body 2, a switch 3 for switching the electrical connection of the first battery 1, the second battery 2 and an electric circuit 8 in the body 2, and a CPU 7 for controlling the switch 3, wherein connection between the first battery 1 or the second battery 4 and the electric circuit 8 or charging of the second battery 4 with the first battery 1 is made possible.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera integrated VT.
The present invention relates to an electronic device such as an R and an electronic camera that is driven by a removable battery.

[0002]

2. Description of the Related Art For example, a VTR integrated with a portable camera
In (commonly called movie), a detachable battery is charged by an external charger and used by setting it in the movie body, but when the battery is consumed and the remaining amount is low, it is detected and It is configured to warn by physical or auditory means.

The warning allows the user to know that the remaining battery level is low.
I either removed the battery from the movie body and replaced it with a new battery that was charged, or recharged the consumed battery and set it in the movie body again to continue using it.

[0004]

In the above-mentioned conventional movie, the VHS-C is generally used for about 2 hours with the 8 mm video tape.
You can record on a cassette tape for about 30 minutes.

However, if a detachable battery is used for the movie body, zooming, focusing,
Power is consumed for recording and playback, so in reality,
The battery lasts only about 15 minutes.

Therefore, it is necessary to replace the charged battery many times during the recording of the movie, and each time, the charged battery must be replaced.
Recording was interrupted, and we missed taking valuable scenes and skipped continuous scenes, making it very difficult to use.

The present invention has been made in order to solve the above problems, and it is possible to replace a battery without interrupting the operation of an electronic device such as a movie driven by the use of a removable battery. It is an object of the present invention to provide a detachable battery-equipped electronic device that can perform

[0008]

In order to achieve the above object, in a detachable electronic device with a battery according to the invention of claim 1, a device main body that can be charged by an external power source and a detachable device main body. A freely chargeable first battery, a rechargeable second battery disposed in the device body, and an electrical connection between the first battery, the second battery and an electronic circuit in the device body. A change-over switch for changing over and a CPU for controlling the operation of the change-over switch are provided, and the change-over switch connects the first battery and the electronic circuit when the first battery is mounted, When not attached, the CPU is controlled so that the second battery and the electronic circuit are connected.

Further, in the detachable electronic device with a battery according to the invention of claim 2, in the detachable electronic device with a battery according to the invention, for switching the electronic circuit between an operating state and a non-operating state. The first battery and the second battery are connected by the power switch and the changeover switch controlled by the CPU when the power switch is not operating.

[0010]

According to the invention of claim 1, when the first battery is attached to the main body of the apparatus, the first switch is operated by the changeover switch.
The battery is connected to an electronic circuit in the main body of the apparatus, power is supplied to the electronic circuit, and the first battery causes the electronic apparatus to perform a predetermined operation.

When the first battery is not attached to the main body of the apparatus, the changeover switch connects the second battery in the main body of the apparatus to the electronic circuit, and the electronic circuit is supplied with power from the second battery. With the second battery,
The electronic device will perform a predetermined operation.

Further, according to the second aspect of the present invention, when the power switch is OFF and is inactive, the electronic circuit is also inactive. Therefore, the changeover switch controlled by the CPU causes the first battery and the second battery to operate. As a result of being connected to the battery, the second battery is charged by the power supply from the first battery, and the charging time and energy loss can be reduced.

As described above, the electronic circuit in the main body of the apparatus is
The removable first battery or the second battery provided in the main body of the device always supplies stable power to the electronic circuit, so that the removable battery can be replaced without interrupting the operation of the electronic device. , Easy to handle.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Embodiment 1 FIG. 1 is a block diagram of an electronic device with a detachable battery according to Embodiment 1 of the present invention. In FIG. 1, reference numeral 1 denotes a first battery, which is external to a device body 2 of an electronic device such as a camera-integrated VTR It is removably attached to the apparatus main body 2 and is charged by an external power source to supply a 6-volt DC power source to the apparatus main body 2.

Reference numeral 3 is a changeover switch, which is a plus side A of the first battery 1 and a power source circuit plus 6V of the electronic circuit 8.
The electric connection between the side B and the positive side C of the second battery 4 provided in the apparatus main body 2 for auxiliary is switched.

Further, 5 is a mechanical switch, which is the first switch described above.
The power switch 6 has a function of determining whether or not the battery 1 is attached to the apparatus main body 2, and 6 is a power switch for switching the electronic circuit 8 to an operating state or a non-operating state.

Reference numeral 7 denotes a CPU (central processing unit) for controlling the connection of the changeover switch 3 so as to be switchable by the detection signals of the mechanical switch 5 and the power switch 6, and 8 indicates An electronic circuit is connected to the power source of the first battery 1 or the second battery 4 to operate an electronic device such as a camera-integrated VTR. However, in the above case, the negative side of the power supply, that is, G
All NDs are conducting.

FIG. 2 is a block diagram showing a connection state between the changeover switch and the CPU. In FIG. 2, the changeover switch 3 is shown.
Nodes a to f are formed therein, and the nodes b, which are connected to the +6 volt side B of the power supply circuit in the electronic circuit, are controlled by a command signal from the CPU 7 to the nodes a, c, d. The connection is switchable.

Specifically, the node a is connected to the positive side A of the battery 1, the node c is connected to C of the battery 4, and the node d is open. Further, with the node e connected to the node c as the center, the CPU 7
The connection signal is switched so as to be conductive or non-conductive with the node f connected to the node a.

Next, the operation of the above configuration will be described with reference to FIGS. As shown in FIG. 4, first, in step 1, it is determined whether or not the power switch 6 is turned on, and the power switch 6 is turned on.
If so, proceed to step 2, and if not, proceed to step 5.

In step 2, the mechanical switch 5 is used to determine whether or not the first battery 1 is attached to the main body 2. If it is attached, the process proceeds to step 3, otherwise to step 4.

In step 3, under the control of the CPU 7, the nodes a and b shown in FIG. 2 are short-circuited, the nodes f and e are opened, and the power source of the first battery 1 is
The power is supplied to the power supply circuit in the apparatus main body 2, and the electronic circuit 8 is put into operation.

In step 4, since the first battery 1 is not attached, the nodes b and c shown in FIG. 2 are short-circuited, the nodes f and e are opened, the power of the second battery 4 is supplied to the power circuit, and The circuit 8 is activated.

In step 5, the mechanical switch 5 determines whether or not the first battery 1 is attached to the apparatus main body 2. If it is attached, the process proceeds to step 6, and if not, the process proceeds to step 8.

In step 6, since the power switch 6 is off and the electronic circuit 8 is in the non-operating state, the nodes f and e and the nodes b and d shown in FIG. 2 are short-circuited to supply the second power from the first battery 1. Charge the battery 4.

Further, in step 7, whether or not the second battery 4 is sufficiently charged is determined by the values of the voltmeter and the ammeter attached to the second battery 4, and if it is sufficiently charged, step 8. If not, go back to step 6 again.

In step 8, nodes f and e shown in FIG.
Becomes open, and the first battery 1 and the second battery 4 become non-conductive. That is, the first battery 1 and the second battery
The battery 4 and the power supply circuit 8 are all non-conductive.

In step 3, the first battery 1 to the second battery 4 are operated while the electronic circuit 8 is operating.
May be charged at the same time. As a result, the first battery 1 can be continuously replaced with a charged battery, and the first battery 1 can be operated without turning off the power switch 5.

At this time, the detection means provided in the second battery 4 determines whether the battery is sufficiently charged, and if the battery is sufficiently charged, the connection from the first battery 1 to the second battery 4 may be made non-conductive. Good.

Further, in the above embodiment, whether or not the charge of the second battery 4 is sufficient was determined by the values of the voltmeter and the ammeter, but it is determined by whether or not a predetermined charging time has elapsed. There is no problem in doing so.

[0031]

As described above, according to the present invention, the operation of the electronic device due to the exchange of the detachable battery is not interrupted and the electronic device can be continuously operated, so that the electronic device can be efficiently used. It has the effect of being extremely easy to handle.

Further, since the auxiliary second battery in the main body of the apparatus can be efficiently charged from the removable first battery, there is an effect that the charging time and energy loss can be reduced.

[Brief description of drawings]

FIG. 1 is a block diagram of an electronic device with a removable battery according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a connection state between a changeover switch shown in FIG. 1 and a CPU.

FIG. 3 is a table in which connection states of mode-based switches in the first embodiment are summarized as a table.

FIG. 4 is a flow chart for explaining an operation state of control by the electronic device with a removable battery of FIG.

[Explanation of symbols]

 1 First Battery 2 Device Main Body 3 Changeover Switch 4 Second Battery 5 Mechanical Switch 6 Power Switch 7 CPU 8 Electronic Circuit

Claims (2)

[Claims] 1. A device body that can be charged by an external power source,
First rechargeable unit that is detachable from the main unit
A battery, a rechargeable second battery provided in the device body, a changeover switch for changing over electrical connection between the first battery, the second battery and an electronic circuit in the device body, and the changeover A CPU for controlling the operation of the switch, wherein the changeover switch connects the first battery and the electronic circuit when the first battery is mounted, and the second switch when the first battery is not mounted.
An electronic device with a detachable battery, characterized in that it is switch-controlled by a CPU so as to connect a battery and an electronic circuit. 2. A first battery and a second battery are connected by a power switch for switching an electronic circuit between an operating state and a non-operating state, and a changeover switch controlled by a CPU when the power switch is not operating. Second
The detachable electronic device with a battery according to claim 1, wherein the battery is rechargeable.