JP2013009574A - Charging type electric/electronic system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a charging type electric/electronic system comprising charging means and function means functioning by a secondary battery with a simple constitution of the whole device and simple manufacturing to avoid deterioration of the secondary battery.SOLUTION: A charger 2 to be the charging means includes: a power supply circuit 9 for supplying power for charging; a control signal extraction circuit 12 for controlling the power supply circuit 9; and a CPU 13. A microphone device 3 to be the function means includes: a secondary battery 18; a RAM 23 for storing voltage information about the secondary battery 18; a CPU 22; and a charging resistance switch circuit 17. The voltage information about the secondary battery 18 stored in the RAM 23 is superposed on the current for charging supplied by the power supply circuit 9 by driving the charging resistance switch circuit 17. The voltage information is extracted by the control signal extraction circuit 12 and is further transmitted to the CPU 13 to simplify the constitution of the control system related to transmission of information.

Description

  The present invention provides, for example, a rechargeable karaoke microphone device, a handy electric cleaner, a functional unit that is equipped with a secondary battery and performs a function by power from the secondary battery, and a secondary battery for charging the functional unit. The present invention relates to a rechargeable electric / electronic device provided with charging means for supplying electric power.

Further, the charging means and the functional means are electrically connected to and disconnected from each other, and charging is possible when the electrical connection is established, and charging is performed when the connection is released. The present invention relates to a rechargeable electric / electronic device whose possible state is released.
More specifically, in the rechargeable electric / electronic device having such a configuration, the remaining battery level of the secondary battery is detected, and control is performed to appropriately charge the battery in accordance with the detection result. The present invention relates to an improvement in avoiding deterioration of a secondary battery due to improper charging of the secondary battery, consumption of waste power due to overcharge, and the like, and in addition, simplifying the configuration of control of charging the secondary battery.

In a rechargeable electric / electronic device, if a secondary battery is overcharged by supplying an excessive amount of power for an excessive amount of time, or if the battery is charged in a way that is not suitable for the remaining battery level, the secondary battery will be damaged. Or overheating will cause deterioration.
As a technique for preventing the deterioration of such a secondary battery, those disclosed in the following published patent publications are known.

  JP-A-6-121466

A rechargeable battery that can be used repeatedly by charging must be set to an appropriate value for the current value and charging time corresponding to the remaining battery level at the time of charging. The secondary battery will deteriorate each time it is charged.
In order to avoid such a deterioration problem, means for measuring the remaining battery level of the secondary battery and means for controlling the charging current value and the charging time corresponding to the measured value are provided. It only has to be.

Now, for example, a functional means for outputting a function by the power from the secondary battery, such as a cordless rechargeable karaoke microphone device, a mobile phone, and a handy electric cleaner, and the secondary battery of this functional means has a power for charging. The charging means is provided, and the functional means can be integrated and separated into the charging means, and when the charging means is integrated, the charging means is ready for charging. In the rechargeable electric / electronic device in which the chargeable state is released, the means for measuring the remaining battery capacity of the secondary battery is provided on the side of the charging means on the side of the functional means provided with the secondary battery. In this case, a method for controlling the value of the charging current and the time for performing charging and connecting the means for controlling and the means for measuring is employed.
As a rechargeable electric / electronic device having such a configuration, a technique disclosed in Japanese Patent Laid-Open No. 6-121466 is known.

However, in the technique disclosed in Japanese Patent Laid-Open No. 6-121466, a communication control unit is provided on each of the functional means side and the charging means side, and the battery remaining measured by functioning this communication control unit is provided. Although charging is performed based on the amount, there is a problem in that the configuration is complicated, the number of parts is increased, manufacturing is complicated, and the cost is increased as a result.
In addition, in the configuration in which the communication control unit is provided on the functional means side, the weight increases accordingly, and there is a problem that the apparatus that holds the functional means in hand becomes a burden on the user.

In the technique disclosed in Japanese Patent Laid-Open No. 6-121466, the means for charging and the means for performing the function are configured separately, but for example, the means for performing charging and the means for performing the function are integrated. Even in such a configuration, it is necessary to separately provide a communication system for performing control, and the overall configuration is still complicated accordingly.
Further, in the configuration in which the charging means and the functional means are separated, the electrode terminal provided in the charging means and the electrode terminal provided in the functional means when the communication system for controlling the output of the charging means is integrated. A configuration in which a signal for control is transmitted by connecting is widely known (for example, transmitter, mobile phone). Even in such a configuration, it is necessary to provide electrode terminals for electrical connection and sending signals on the charging means side and the function means side, respectively, and the same problem arises that the number of parts increases and the manufacturing becomes complicated.

In particular, when the rechargeable electric / electronic device is a wireless rechargeable karaoke microphone device, it is often used in an environment where the amount of light is relatively small. In order to make sure that the functional means and the charging means are easily connected to each other so that the functional means and the charging means can be connected to each other, the arrangement of the charging electrode terminals and the control signal electrode terminals of the charging means and the functional means, respectively. There arises a problem that the position and shape of the installation are greatly restricted.
It should be noted that the smaller the number of electrode terminals arranged on the charging means and the functional means, respectively, the better in terms of configuration and manufacturing. However, in principle, the electrode terminals for charging are absolutely necessary, so at least two sets of electrodes are required. A terminal is required.

In addition, when the functional means receives power from the charging means and supplies the charging power to the secondary battery, the functional means may be controlled to supply power at an appropriate current and for an appropriate charging time. Conceivable.
However, in such a configuration, the configuration of the functional means becomes large, especially in an apparatus in which the functional means is separated and used with respect to the charging means, and the functional means is increased in size and weight, and practical in a handy type apparatus. It will be lacking in sex.

From the circumstances described above, when the simplification of the configuration, the simplification of manufacturing, etc. are required, the secondary battery is overcharged or charged unsuitable for the remaining battery level, which is called deterioration of the secondary battery. Problems will inevitably arise.
Therefore, in order to avoid the above-described problem of deterioration of the secondary battery, for example, charging with a relatively small current such as a current of about 1/10 times the battery capacity per hour (hereinafter referred to as “normal charging”). ") Is performed for a long time.

However, if the remaining battery level of the secondary battery to be charged is not known, more time is required for charging, and there is a risk of battery deterioration when charging for an excessively long time even with normal charging. I will always be with you.
On the other hand, a method of charging a secondary battery with a relatively large current, for example, approximately the same as the battery capacity per hour (hereinafter referred to as “rapid charging”) is also known.

This rapid charging is usually configured such that the voltage change (hereinafter referred to as “Δv”) of the electrode terminal of the charge output is monitored, the state of full charge is estimated from the change of Δv, the charging time is determined, and charging is performed. It has become.
However, when charging with the quick charge of such a configuration, it is difficult to know the accurate remaining battery level of the secondary battery, whether the state at that time is fully charged, etc., and as a result, the secondary battery The problem of deterioration is inevitable.

In addition, when charging is performed by rapid charging, it is necessary to continuously monitor Δv, and there is a problem that the device has a complicated configuration because a means for continuously monitoring Δv is required.
The present invention has been made in view of the above circumstances, and includes a functional unit that functions by a secondary battery and a charging unit that supplies charging power to the secondary battery, and the configuration is simple. Therefore, it is easy to manufacture, and thus it is possible to reduce the cost, the weight of the functional means can be reduced, and the accurate remaining battery level of the secondary battery can be easily obtained. A rechargeable electric / electronic device capable of avoiding deterioration of a secondary battery while ensuring that the charging time is short is provided.

The present invention is a rechargeable electric / electronic device in which a control signal for controlling charging power is superimposed on charging power.
The detailed configuration includes a secondary battery, and includes functional means for outputting a function by power from the secondary battery, and charging means for supplying charging power to the secondary battery of the functional means,
Further, the charging means can be connected so as to supply charging power to the functional means, the remaining battery level of the secondary battery of the functional means is detected at that time, and the detected remaining battery level In response to the above, the charging means is controlled to supply charging power,
In addition, the rechargeable electric / electronic device is characterized in that a signal for the control is superimposed on the charging power from the charging means.

With such a configuration, since the control signal is superimposed on the charging power, it is not necessary to provide a separate system for sending the control signal, and the output of the charging power can be obtained while simplifying the entire configuration. Therefore, it is possible to avoid deterioration of the secondary battery.
In the rechargeable electric / electronic device of the present invention, the transmission of the information related to the remaining amount of the secondary battery is specifically evaluated based on the voltage detected by the voltage detection circuit connected to the secondary battery. The evaluation result is interposed between the charging power input terminal of the functional means and the secondary battery, and the control signal is supplied to the charging power current by changing the input impedance with respect to the charging power of the input. The structure which sends to the charge means side through the charge resistance switch circuit which can be superimposed is mentioned.

In addition, in the rechargeable electric / electronic device of the present invention, the charging unit and the functional unit are configured separately, and when the charging unit outputs charging power to the functional unit, the charging unit As a means for determining whether or not the functional means appropriately correspond to each other in charging, there is a configuration in which an identification signal is output from one of the charging means and the functional means to the other.
In addition to the configuration in which the charging means and the functional means are integrated, the rechargeable electric / electronic device of the present invention includes a configuration in which the charging means and the functional means are separated at the time of use and are integrated at the time of charging. .

Further, based on the contents of the functional means, the rechargeable electric / electronic device of the present invention is specifically for a rechargeable karaoke device that inputs voice, converts it into an electric signal, and sends it to a wireless rechargeable karaoke amplifier. Examples include microphone devices, transmitters, cordless portable cleaners, rechargeable lights, transceivers, and the like.
On the other hand, the control related to the charging of the secondary battery specifically refers to the determination of the remaining battery level from the voltage of the secondary battery, rapid charging and normal charging for the purpose of avoiding deterioration caused by overcharging the secondary battery. And selectively charging the secondary battery and, when a voltage peak is obtained during charging of the secondary battery, the charging is regarded as full charging and the charging is stopped.

The present invention provides a secondary battery by superimposing a control signal for controlling charging to the secondary battery on a system for supplying charging power from the charging means to the secondary battery of the functional means. Since the system for controlling the charging of the system has been simplified, the configuration is simple and the number of parts is small. Therefore, the manufacturing can be simplified and the cost can be kept low. This is a rechargeable electric / electronic device that can avoid the problem of deterioration of the secondary battery because the charging of the secondary battery is appropriately controlled.
In addition, when the charging means and the functional means are separate structures, the current and voltage of the electric power from the charging means correspond appropriately to the secondary battery of the functional means so that there is no problem even if charging is performed. By adding a function for transmitting and receiving an identification signal for discrimination between the charging means and the functional means, the functional means is supplied with charging power from a charging means suitable for charging, and the secondary It is possible to avoid damage and deterioration of the battery.

  In the best mode for carrying out the present invention, it is a perspective view for explaining an overall appearance configuration including a part of notches.   FIG. 2 is a block diagram illustrating an electrical configuration when the functional unit is connected to the charging unit in the best mode for carrying out illustrated in FIG. 1.   FIG. 2 is a flowchart for explaining a process from charging to sending a control signal for quick charging to a power supply circuit in a process in which a charging unit charges a functional unit in the best mode for carrying out shown in FIG. 1.   FIG. 2 is a flowchart for explaining from the time when the secondary battery is rapidly charged to the end in the process in which the charging means charges the functional means in the best mode for carrying out shown in FIG. 1.

Hereinafter, the present invention will be described with reference to the best mode for carrying out the invention based on the drawings. However, the present invention is not limited to this embodiment.
The rechargeable electric / electronic device of the present invention will be described as a rechargeable karaoke microphone device 1. As shown in FIGS. 1 and 2, the rechargeable karaoke microphone device 1 includes a charger 2 as charging means and a microphone device 3 as functional means.

As shown in FIG. 1, the rechargeable karaoke microphone device 1 has a microphone device 3 that can be attached to and detached from the charger 2, that is, can be electrically connected and is configured separately.
The charger 2 is supplied with commercial power supplied from an electric power company to a home, and supplies charging power to the microphone device 3.

The charger 2 is substantially box-shaped in appearance, and has two recesses 4 extending substantially vertically downward from the top surface.
The concave portion 4 of the charger 2 has a shape that is recessed downward in a conical cone shape, and its diameter gradually decreases as it progresses downward from the top.

The bottom of the recess 4 is formed in a substantially circular plane 5, and charger-side terminals 6, 7 projecting upward by a biasing force of a spring (not shown) at positions spaced apart from the center of the circular plane 5 by a certain distance. Is arranged.
As shown in FIG. 2, the charger 2 includes a plug 8, a power supply circuit 9, a control signal output circuit 10, charger terminals 6 and 7, a terminal voltage monitoring circuit 11, a control signal extraction circuit 12, and a CPU 13. Is provided.

In FIG. 2, wide arrows indicate the flow of charging power, and arrows consisting only of solid lines indicate the flow of control signals.
The plug 8 is for connecting to a household commercial power plug (not shown) and receiving supply of commercial power from an electric power company.

The power supply circuit 9 includes a transformer and a rectifier (both not shown), receives commercial power, converts it into DC power for charging (normal charging power and quick charging power), and from the CPU 13. Based on this control, the normal charging power and the rapid charging power are selectively supplied to the microphone device 3 side.
The control signal output circuit 10 superimposes the control signal from the CPU 13 on the DC power for charging from the power supply circuit 9 and outputs it to the microphone device 3 side via the charger side terminals 6 and 7.

The terminal voltage monitoring circuit 11 is interposed between the charger side terminals 6 and 7 and the CPU 13, and is charged when the microphone device 3 is connected to the charger 2, that is, the microphone device 3 is inserted into the recess 4 of the charger 2. When the state becomes possible, confirmation of the state and abnormality of the secondary battery 18 described later are detected.
The CPU 13 is connected to the subsequent stage of the terminal voltage monitoring circuit 11 and the control signal extraction circuit 12, compares the remaining battery level of the secondary battery 18 of the microphone device 3 with the built-in memory data, and supplies the charging power to the power supply circuit 9. The signal which controls the output of is sent.

The charger-side terminals 6 and 7 are connected to the microphone-side terminals 15 and 14 when the microphone device 3 is inserted into the recess 4 of the charger 2, and are charged from the power supply circuit 9. This is to output the power obtained by superimposing the control signal from the CPU 13 to the microphone device 3 side.
The microphone device 3 includes microphone-side terminals 14 and 15, a reverse voltage prevention circuit 16, a charging resistance switch circuit 17, a secondary battery 18, a microphone 19, a voltage detection circuit 20, a control signal extraction circuit 21, A CPU 22 and a RAM 23 are provided.

The microphone device 3 receives the supply of charging power from the charger 2 side, the secondary battery 18 secures the power, and the secondary battery 18 converts the sound input from the microphone 19 into an electrical signal. An electric signal is wirelessly sent to a karaoke amplifier (not shown).
The microphone device 3 is provided with a disk-shaped microphone-side terminal 15 and a donut-shaped microphone-side terminal 14 that are substantially concentric with the microphone-side terminal 15 on the bottom surface thereof.

A microphone 19 that is covered and protected by a metal net (not shown) is disposed on the head of the microphone device 3.
The reverse voltage prevention circuit 16 is for preventing the device from being destroyed by stopping the input of the power when the power having different polarity is connected.

The charging resistance switch circuit 17 changes the input impedance with respect to the input DC charging power, superimposes the control signal from the CPU 22 on the current of the charging power, and as a result, the control signal of the CPU 22 is changed to the charger 2. It is for sending to the side. The charging resistance switch circuit 7 further has a function of recognizing whether or not the supplied charging power is from an appropriate charger, the details of which will be described later.
The secondary battery 18 is supplied with charging power from the charger 2 side, stores the power, and supplies the power necessary for the microphone 19 to function.

The microphone 19 receives power supplied from the secondary battery 18, converts input sound into an electric signal, and functions to send the electric signal to a karaoke amplifier (not shown) wirelessly.
The voltage detection circuit 20 is connected to the subsequent stage of the secondary battery 18 and detects the remaining battery level based on the voltage or current of the secondary battery 18.

The control signal extraction circuit 21 is connected to the subsequent stage of the microphone side terminals 14 and 15, and extracts a control signal from the CPU 13 superimposed on the charging power and sends it to the CPU 22.
The CPU 22 evaluates the remaining battery level of the secondary battery 18 based on the voltage value of the secondary battery 18 detected by the voltage detection circuit 20 and thereafter stored in the RAM 23, and the evaluation result is sent to the charging resistance switch circuit 17. Output.

The RAM 23 stores the voltage of the secondary battery 18 immediately before the microphone device 3 is turned off, and the battery voltage data stored in the RAM 23 is sent to the CPU 22 as charge data when charging. It is configured.
Here, when the microphone device 3 is turned off, when the user finishes using the microphone device 3, it means that the switch attached to the microphone device 3 and turning on / off the power of the secondary battery 19 is turned off. .

The rechargeable karaoke microphone device 1 is configured as described above in its entirety and in each part.
In the following, the charging function of the rechargeable karaoke microphone device 1 will be described with reference to the flowcharts shown in FIGS. 3 and 4.

First, the rechargeable karaoke microphone device 1 can be used without being charged when the secondary battery 18 is charged in advance when shipped from the manufacturing factory. It is possible.
Therefore, a description will be given starting from the point of time when the user charges the rechargeable karaoke microphone device 1 by using the power precharged in the secondary battery 18 and then integrates the microphone device 3 into the charger 2 for charging.

When the user finishes using the rechargeable karaoke microphone device 1, the power switch of the microphone device 3 (not shown, but attached to the cylindrical grip portion) is turned off. The voltage of the secondary battery 18 at that time Is detected by the voltage detection circuit 20, and the detected value (remaining battery level) is stored in the RAM 23 (step: S1).
At this time, the user turns off the switch of the microphone device 3 and inserts the microphone device 3 into the recess 4 of the charger 2, but the RAM 23 stores the remaining battery level of the secondary battery 18.

Next, in the second and subsequent use of the rechargeable karaoke microphone device 1, when the microphone device 3 can be charged by the charger 2, the microphone device 3 is inserted into the concave portion 4 of the charger 2 and slowly dropped.
Here, the diameter of the lower portion of the microphone device 3 is smaller as it becomes the tip, and the diameter of the concave portion 4 of the charger 2 is smaller as it approaches the circular plane 5 of the bottom portion. This is guided by the concave portion 4 and is placed and fixed on the circular plane 5.

That is, even if the rechargeable karaoke microphone device 1 is used in an environment where the light amount is somewhat dark and the light amount is insufficient, or the user does not insert the microphone device 3 into the concave portion 4 of the charger 2 by accurately positioning the microphone device 3, The microphone device 3 is guided to take a predetermined position by the shape of the microphone device 2 and the shape of the recess 4.
When the microphone device 3 is inserted into the concave portion 4 of the charger 2 and is placed and fixed on the circular plane 5, the terminals 14 and 15 on the microphone device 3 side are respectively connected to the terminals 7 and 6 on the charger 2 side. Contact is in electrical connection.

When the terminals 14 and 15 on the microphone device 3 side and the terminals 7 and 6 on the charger 2 side are electrically connected, charging power is output from the charger 2 to the microphone device 3. The voltage at terminals 6 and 7 drops.
The terminal voltage monitoring circuit 11 monitors and recognizes that the voltage at the charging means side terminals 6 and 7 of the charger 2 has dropped, and sends that fact to the CPU 13.

The CPU 13 receives the signal from the terminal voltage monitoring circuit 11 and detects that the microphone device 3 is connected to the charger 2 (step: S2), and then controls the power supply circuit 9 to start normal charging. Send a signal.
Here, the power supply circuit 9 outputs to the control signal output circuit 10 the power of a predetermined voltage and current for normal charging that has been converted from commercial power and further rectified.

Such charging power is output to the microphone device 3 side via the control signal output circuit 10 and the charging means side terminals 6 and 7, and on the microphone device 3 side, the function means side terminals 14 and 15 and the reverse voltage prevention circuit. 16 and the charge resistance switch circuit 17 are supplied to the secondary battery 18.
At this time, when the control signal output circuit 10 receives the identification signal A (one of the control signals) indicating the charger 2 side corresponding appropriately as a charger from the CPU 13, the control signal is superimposed on the power from the power supply circuit 9. (Step: S3), the control signal superimposed on the power is output to the charger side terminals 6 and 7.

Here, the identification signal A is for determining whether or not the charger 2 and the microphone device 3 are a combination appropriately associated with charging.
If the combination of the charger 2 and the microphone device 3 that do not properly correspond to each other for charging power, even if charging is performed, there will be a problem of deterioration or damage of the secondary battery. Become.

Therefore, in order to avoid such a problem, the CPU 22 turns on the charging resistance switch circuit 17 only when the CPU 22 receives the identification signal A indicating that the above-mentioned charging is properly associated with each other. As long as the charging resistance switch circuit 17 is not turned off, the charging resistance switch circuit 17 is always turned off.
Here, when the identification signal A superimposed by the control signal output circuit 10 is extracted by the control signal extraction circuit 21 and sent to the CPU 22, the CPU 22 receives the identification signal A and turns on the charging resistance switch circuit 16.

As a result, the secondary battery 18 receives normal and appropriate voltage and current power from the charger 2 and starts normal charging.
When normal charging of the secondary battery 18 starts, at the same time, the CPU 22 that has received the identification signal A sends information related to the voltage of the secondary battery 18 obtained from the voltage detection circuit 20 to the charging resistance switch circuit 17. By driving, it is superimposed on the power for charging (step: S4), and the control signal extraction circuit 12 is connected to the control voltage extraction circuit 12 via the reverse voltage prevention circuit 16, the function means side terminals 14 and 15 and the charging means side terminals 6 and 7. send.

Here, the charging resistance switch circuit 17 is always turned on after superimposing information relating to the voltage of the secondary battery 18, so that rapid charging can be accepted.
The CPU 13 determines whether or not the voltage information (remaining battery information) is present in the control signal extraction circuit 12 (step: S5).

Here, when the CPU 13 determines that the voltage information is in the control signal extraction circuit 12, the CPU 13 calculates the remaining battery level of the secondary battery 18 based on the voltage information in the control signal extraction circuit 12. Then, based on the calculated value, an optimum time for quick charging is calculated, and a control signal for performing rapid charging for such optimum time is sent to the power supply circuit 9.
When the power supply circuit 9 receives the control signal from the CPU 13, the power supply circuit 9 outputs the above-described power for rapid charging for the above-mentioned optimum time, and the secondary battery 18 starts to be rapidly charged (step: S7).

On the other hand, if the CPU 13 determines that there is no information on the voltage in the control signal extraction circuit 12, it sends a control signal to the power supply circuit 9 so as to output the normal charging power after the set time has elapsed.
When the secondary battery 18 is in such a rapidly charged state, the CPU 13 monitors the voltage at the charger side terminals 6 and 7 by the terminal voltage monitoring circuit 11 to determine whether the secondary battery 18 is fully charged. Whether or not is determined (step: S8).

Here, during the monitoring, when the terminal voltage monitoring circuit 11 detects the voltage fluctuation (Δv) generated when the secondary battery 18 is fully charged, the CPU 13 rapidly charges the secondary battery 18. Is immediately sent to the current supply circuit 9 (step S10).
The secondary battery 18 is protected without being overcharged by the configuration in which the rapid charging is immediately stopped.

On the other hand, when the terminal voltage monitoring circuit 11 does not detect the voltage fluctuation (Δv) during the monitoring, the CPU 13 performs the rapid charging after the secondary battery 18 is rapidly charged for a set time. A control signal for switching from normal charging to normal charging is sent to the current supply circuit 9 (step: S9).
Here, the power supply circuit 9 outputs power for normal charging.

Further, when the set time has elapsed, the CPU 13 sends a control signal for stopping the normal charging to the current supply circuit 9 (step: S10).
Here, the current supply circuit 9 receives the control signal from the CPU 13 and stops the output of the charging power. Therefore, the output of the charging power from the charger 2 to the microphone device 3 side is stopped, and the charging of the secondary battery 18 is stopped.

As described above, the rechargeable karaoke microphone device 1 supplies power for charging from the power supply circuit 9 to the secondary battery 18 when the remaining battery level of the secondary battery 18 is detected. Is selectively calculated based on the value of the remaining battery level, and rapid charging is performed only for the calculated time.
With such a configuration, the charging time is shortened, and the problem of deterioration such that the rapid charging with a high current is performed for an unnecessarily long time resulting in overcharging and shortening the life of the secondary battery 18. Does not occur.

On the other hand, when the remaining battery level of the secondary battery 18 cannot be detected, in consideration of avoiding the deterioration of the secondary battery 18, for example, a current that is approximately 1/10 times the battery capacity per hour is relatively high. The charging is performed with a small current, so-called normal charging.
With such a configuration, the secondary battery 18 is not charged with excessive electric power, so that the problem of deterioration of the secondary battery 18 hardly occurs.

Further, as described above, the rechargeable karaoke microphone device 1 detects the remaining battery level of the secondary battery 18 and controls the power supply circuit 9 based on the detected value to control the charging power. It is configured to superimpose signals, and it is not necessary to provide special terminals and wiring for control.
Therefore, because of such a configuration, the configuration is simplified to the extent that no control terminal, wiring, or the like is required, the material is reduced, the manufacturing is simplified, and consequently the cost is reduced. It is possible.

As described above, the rechargeable electric / electronic device of the present invention has exemplified the rechargeable karaoke microphone device 1 as described above, but in addition to this, a rechargeable cleaner, a transceiver, a rechargeable transmitter, a rechargeable recorder, a rechargeable recorder Type lighting fixtures and the like.
Even if the rechargeable electric / electronic device is a device other than the rechargeable karaoke microphone device 1, it is possible to prevent deterioration of the secondary battery to be used, and to eliminate and manufacture parts by simplifying the configuration. It is possible to reduce the cost and cost.

The rechargeable karaoke microphone device 1 of the rechargeable electric / electronic device described above has a separate configuration in which the charging means 2 and the functional means 3 can be integrated, but the charging means and the functional means are integrated without being separated. Even in the case of the configuration, it is possible to obtain effects such as simplification of the entire configuration, simplification of manufacturing, reduction of weight, reduction of cost, etc., as compared with a case where the control system is separately provided. ing.
The rechargeable karaoke microphone device 1 sends an identification signal A from the charger 2 side to the microphone device 3 side before starting charging, and whether the charger 2 and the microphone device 3 are properly associated with each other regarding charging. If the charging switch circuit 17 is not functioning properly and the secondary battery 18 is not charged as a result, the charger 2 for the microphone device 3 is not charged. Even when the selection is inappropriate, the secondary battery 18 can be prevented from being deteriorated or damaged.

1: Rechargeable karaoke microphone device (rechargeable electric / electronic device)
2: Charger (charging means)
3: Microphone device (functional means)
6, 7, 14, 15: Terminal 9: Power supply circuit 10: Control signal output circuit 12, 21: Control signal extraction circuit 13, 22: CPU
17: charging resistance switch circuit 18: secondary battery 19: microphone 20: voltage detection circuit

Claims (3)

A secondary battery is provided, and functional means for outputting a function by power from the secondary battery, and charging means for supplying charging power to the secondary battery of the functional means are provided,
Further, the charging means can be connected so as to supply charging power to the functional means, the remaining battery level of the secondary battery of the functional means is detected at that time, and the detected remaining battery level In response to the above, the charging means is controlled to supply charging power,
In addition, a rechargeable electric / electronic device in which a signal for the control is superimposed on the charging power from the charging means.   The remaining amount of the secondary battery is evaluated based on the voltage detected by a voltage detection circuit connected to the secondary battery, and the evaluation result is obtained by inputting the charging power input terminal of the functional unit and the secondary battery. And is configured to be sent to the charging means via a charging resistance switch circuit that can superimpose a control signal on the current of the charging power by changing the input impedance with respect to the charging power of the input. The rechargeable electric / electronic device according to claim 1.   When the charging unit and the functional unit are configured separately, and the charging unit outputs charging power to the functional unit, the charging unit and the functional unit appropriately correspond to each other in charging. 3. A rechargeable electric / electronic apparatus configured to output an identification signal for determining whether or not the battery is output from one of the charging means and the functional means to the other. The rechargeable electric / electronic device described.

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