JP3341302B2 - Battery-powered power supply - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to relates to a battery type power supply device using, for example, rechargeable secondary batteries used as a power source for devices such as VTR integrated video mosquitoes <br/> camera.

[0002]

2. Description of the Related Art In a battery-powered power supply device used as a power supply for a device such as a VTR integrated video camera, the remaining capacity of a built-in rechargeable secondary battery, for example, is displayed.

In such a case, the display is conventionally made using a light emitting diode or the like on the power supply device side. Alternatively, only when connected to a device, an image is displayed on a finder or the like on the device (load) side.

[0004] In such a device, it is required to increase the types of display so that more detailed display of the state of the battery and the like can be performed. However, in order to increase the number of types of display, for example, providing a plurality of light emitting diodes on the power supply side, or providing a liquid crystal display panel or the like,
The configuration becomes complicated and the manufacturing cost increases.

[0005] Further, knowing the state of the battery in detail only on the device (load) side cannot maintain the accuracy when the type of battery or a plurality of batteries is used alternately, so that the remaining capacity of the battery is eventually reached. Only the degree of display could be performed. The present application has been made in view of such a point.

[0006]

The problem to be solved is that it is not possible to display more detailed information such as the state of the battery.

[0007]

A first means according to the present invention comprises a battery, a means for detecting a current flowing through the battery,
Including the resulting Ru circuit remaining capacity by integrating processes the detected current
Processing means for transmitting the remaining capacity information to the load side and outputting a specific code for discriminating the imitation product from the processing means to a terminal for displaying the remaining capacity information on the display unit on the load side. It is a battery type power supply device.

[0008]

[0009]

[0010]

[0011]

[0012]

According to this, the battery-specific information is transmitted to the external display unit and displayed, whereby more detailed display of the battery state and the like can be performed.

[0013]

FIG. 1 is a block diagram showing an example of a circuit of a battery type power supply device according to the present invention. In this figure, reference numeral 1 denotes a rechargeable secondary battery, for example. One end of the battery 1 is connected to one power supply terminal 2a of a predetermined terminal connected to the load (device) 100. The other end of the battery 1 is grounded, and the other end of the battery 1 is connected to the other power supply terminal 2b of the above-mentioned predetermined terminal through a detection resistor 3 described later.

The power terminals 2a and 2b are connected to the microcomputer 4. Further, both ends of the detection resistor 3 are connected to the differential amplifier 5, and the output of the differential amplifier 5 is connected to the microcomputer 4 through the AD converter 6. The output of an arbitrary temperature sensor 7 is connected to the microcomputer 4.

Then, in this microcomputer 4,
From the output signals of the AD converter 6, the temperature sensor 7, etc., the battery 1
Is detected, and the detected value is processed and taken out to the information terminals 8a, 8b, 8c. Then, signals from these information terminals 8a, 8b, 8c are supplied to the load 100, and signals from these information terminals 8a, 8b, 8c are displayed on the display unit 101 in the load 100.

Therefore, in this device, the information unique to the battery 1 detected and processed by the microcomputer 4 is displayed on the display unit 101 in the load 100.

That is, in this device, the value of the current flowing through the detection resistor 3 is detected. Therefore, the consumption of the battery 1 is detected by integrating this current value, and the remaining capacity of the battery 1 is detected from this value. Further, the number of times of use can be known by counting the number of times of charge / discharge with a counter in the microcomputer 4. Further, the refresh timing can be determined based on this value.

It is also possible to generate information for prompting charging in consideration of the temperature information from the temperature sensor 7 and the amount of load current, and information such as self-diagnosis of the inactive state of the battery 1.
Further, by generating a specific code signal, it is possible to find a counterfeit product or to eliminate the counterfeit product. Then, such information can be displayed on a finder or the like on the device (load) side, for example.

FIG. 2 shows the appearance of the battery type power supply device according to the present invention. In this figure, reference numeral 10 denotes a battery type power supply device as a whole, and power supply terminals 2a, 2b and information terminals 8a, 8b, 8c are provided on the back surface of the device 10.

Thus, according to the above-described device, the information unique to the battery 1 is transmitted to the external display unit 101 and displayed,
As a result, more detailed display of the state of the battery and the like can be performed.

The above-described apparatus is not limited to the case where a rechargeable secondary battery is used, but a plurality of general-purpose batteries (dry batteries) are collectively housed in a case, and terminals are provided at predetermined positions of the case to provide dedicated terminals. The present invention can also be applied to a case where a rechargeable power supply is used in place of the power supply.

[0022]

According to the present invention, information unique to the battery 1 is transmitted to and displayed on the external display unit 101, whereby a more detailed display of the battery state and the like can be performed. . In addition, more detailed indication of battery status etc.
And can generate a specific code signal
In addition, it is possible to find and eliminate imitations.

[Brief description of the drawings]

FIG. 1 is a circuit block diagram of an example of a battery-type power supply device according to the present invention.

FIG. 2 is an external view of an example of a battery-type power supply device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Battery 2a, 2b Power supply terminal 3 Detection resistor 4 Microcomputer 5 Differential amplifier 6 A / D converter 7 Temperature sensor 8a, 8b, 8c Information terminal 100 Load (device) 101 Display part

Claims (1)

(57) [Claims] A battery , a means for detecting a current flowing through the battery , and a processing means including a circuit for integrating the detected current to obtain a remaining capacity; A battery type power supply device wherein a specific code for discriminating imitation products is output from the processing means to a terminal for transmitting information to a load side and displaying the information on a display unit on the load side.