JPH07130403A - Secondary battery - Google Patents

Abstract

PURPOSE:To provide a secondary battery for which a usable time of a secondary battery main body can be determined easily. CONSTITUTION:A secondary battery is provided with a capacity display 6 to display quantity of contents in a secondary battery main body 5 by plural display lamps 7a-7e provided in parallel. A display label 1 to indicate a usable time of the secondary battery main body 5 corresponding to display of the plural display lamps 7a-7e is applied to the secondary battery main body 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a secondary battery, and more particularly to a secondary battery having a capacity indicator.

[0002]

2. Description of the Related Art In a secondary battery which is detachably attached to an electronic device such as a VTR with a built-in camera and is recharged and used, the internal capacity has conventionally been displayed by a capacity indicator such as a light emitting diode. ing.

[0003]

However, since the capacity of the secondary battery and the power consumption of the electronic device are different for each model, the conventional secondary battery described above allows the user to easily set the usable time of the secondary battery. There is a problem in that it is impossible to make a judgment, and for example, in a camera-integrated VTR, the battery may unexpectedly run out, resulting in failure to photograph a subject.

The present invention has been made in view of the above problems, and an object thereof is to provide a secondary battery capable of easily determining the usable time of the secondary battery main body.

[0005]

In order to achieve the above-mentioned object, the present invention provides a secondary battery provided with a capacity indicator for displaying the internal capacity of the secondary battery main body by a plurality of display units arranged in a row, It is characterized in that an index for displaying the usable time of the secondary battery main body is provided corresponding to the plurality of display portions.

[0006]

According to the above construction, the usable time is displayed by the index provided corresponding to the plurality of display portions.

[0007]

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIGS. 1 (a) and 1 (b) are plan views showing an example of display labels (indexes) used in the secondary battery according to the present invention. Display units 3 and 4 are provided. "0" and "1" in FIG. 1 (a)
"0", "20", "30", and "0" and "1" in FIG. 1 (b)
“5”, “30”, and “45” indicate the usable time (min) of the secondary battery main body, respectively, and are appropriately selected according to the capacity of the secondary battery used or the power consumption of the electronic device to be mounted. The desired label 1, 2 is used. That is, the display labels 1 and 2 are obtained from calculation or experiment so that the usable time is displayed on the capacity indicator described later according to the power consumption of the electronic device or the capacity of the secondary battery, and the usable label can be used. The time is printed.

FIG. 2 shows a secondary battery to which the display label 1 is affixed, and the secondary battery has a capacity display for displaying the internal capacity of the secondary battery main body 5 in accordance with its charge state. A container 6 is provided in the secondary battery main body 5.

Specifically, the capacity indicator 6 comprises a plurality of indicators including light-emitting diodes arranged in a row on the flat surface of the secondary battery body 5 which are sequentially lit according to the internal capacity of the secondary battery body 5. The lights 7a to 7e and the check button 8 provided near the display lights 7a to 7e for issuing an operation command to the lights 7a to 7e.

Further, a display label sticking portion 9 is provided below the capacity display 6, and the display label 1 shown in FIG. 1A is stuck to the display label sticking portion 9. There is.

In the secondary battery to which such a display label 1 is attached, when the user operates the check button 8, the indicator lights 7a to 7e are activated and the usable time associated with the display is visually checked. By doing so, the usable time can be easily confirmed.

Next, the operation of the capacity indicator 6 will be described.

FIG. 3 is an electric circuit diagram showing the operation of the capacitance indicator 6, in which 11 is a positive electrode terminal and 12 is a negative electrode terminal. In the capacity indicator 6, comparators 13a to 13 are provided corresponding to the indicator lights (light emitting diodes) 7a to 7e.
e is provided. That is, the comparators 13a to
The output terminal of 13e is connected to the indicator lamps (light emitting diodes) 7a to 7e via resistors 14a to 14e. The non-inverting inputs of the comparators 13a to 13e are connected to the constant voltage diode 15 and the resistor 16, and the constant voltage diode 15 and the resistor 16 hold a substantially constant voltage. On the other hand, the inverting inputs of the comparators 13a to 13e are connected to the check button 8 via the resistors 17a to 17f, and one terminal of the check button 8 and one terminal of the resistor 17f are connected to the secondary battery body 5. Has been done. That is, the terminal voltage of the secondary battery main body 5 is divided by the resistors 17a to 17f and the comparator 1
It is input to the inverting inputs of 3a to 13e. The resistor 17
The resistance values of a to 17f have the same potential as the non-inverting input when the inverting input of the comparator 13a is the terminal voltage V1, the same potential as the non-inverting input when the inverting input of the comparator 13b is the terminal voltage V2, and the like. The inverting inputs of the comparators 13c to 13e are set to have the same potential as the non-inverting input at the terminal voltages V3 to V5. That is, when the user presses the check button 8, power is supplied to the circuit, and the light emitting diode 7a causes the terminal voltage V1.
Lights when crossing. Further, the light emitting diode 7b lights up when the terminal voltage V2 is exceeded. Similarly, the light emitting diodes 7c to 7e have terminal voltages of V3 to V, respectively.
Turns on when the number exceeds 5. And the light emitting diode 7
Since a to 7b are sequentially arranged from the left side (see FIG. 2), a bar-shaped display according to the terminal voltage is performed. That is, the internal capacities C1 to C5 and the terminal voltages V1 to V5 of the secondary battery
4, the terminal voltages V1 to V5 tend to decrease with the decrease of the internal capacity, and the usable time corresponding to the internal capacity is obtained in advance by an experiment or the like and displayed. By printing and displaying on the label 1, the user can easily visually confirm the usable time of the secondary battery according to the lighting state of the indicator lights 17a to 17f.

[0015]

As described above, according to the present invention, the usable time can be easily determined by providing the display label according to the capacity of the secondary battery main body and the power consumption of the electronic equipment to be mounted. It is possible to prevent unexpected battery exhaustion.

[Brief description of drawings]

FIG. 1 is a plan view of a display label used in a secondary battery according to the present invention.

FIG. 2 is a plan view of a secondary battery according to the present invention.

FIG. 3 is an electric circuit diagram for explaining the operation of the capacitance display.

FIG. 4 is a diagram showing the relationship between the internal capacity of a secondary battery and its terminal voltage.

[Explanation of symbols]

 1, 2 indicator 5 secondary battery body 6 capacity indicator

Claims (1)

[Claims] 1. A secondary battery including a capacity indicator for displaying the internal capacity of a secondary battery main body by a plurality of display units arranged in a row, wherein the secondary battery corresponds to the display of the plurality of display units. A secondary battery characterized by being provided with an index for displaying the usable time of the main body.