JPH0590380U - Battery - Google Patents

Abstract

(57) [Abstract] [Purpose] The battery of the present invention is intended to supply the output of the temperature detecting unit or the output of the remaining amount detecting unit to the device through one terminal. [Constitution] The battery 1 detects the charging temperature of the battery unit 2 and outputs a temperature detection signal 3a, and the remaining amount of the battery unit 2 that detects the remaining capacity of the battery unit 2 and outputs a remaining amount detection signal 6a. The detection unit 6, the control unit 9 that determines the charge / discharge state of the battery unit 2 and outputs a charge / discharge determination signal, and the temperature detection signal 3a and the remaining amount detection signal 6a are switched and output according to the charge / discharge determination signal. And a switch 7.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a battery including therein a temperature detecting unit that detects a charging temperature of a battery unit and a remaining amount detecting unit that detects a remaining capacity of the battery unit.

[0002]

[Prior Art]

 The nickel-hydrogen battery has the advantage that it has a large charge capacity and can be used for a long time. However, since this battery needs to be charged according to the temperature, the battery using this battery has a thermistor 3 that detects the charging temperature of the battery unit 2 and outputs a temperature detection signal 3a as shown in FIG. A terminal 4 for supplying the temperature detection signal 3a thus obtained to the charging device is provided therein. Of course, the charging device incorporates a circuit that receives the output 3a of the thermistor 3 and optimizes charging. Note that 5a and 5b are charge / discharge terminals connected to the battery 2.

By the way, recently, there is a technique of displaying the remaining battery level of a battery on the display unit (for example, a viewfinder of a video camera) of the apparatus. As shown in FIG. 5, a battery adopting this technology uses a remaining amount detecting unit 6 that detects the remaining capacity of the battery unit 2 and outputs a remaining amount detecting signal 6a, and a remaining amount detecting signal 6a obtained in this way. And a terminal 7 for supplying to the inside. Of course, the device incorporates a circuit for converting the output 6a of the remaining amount detector 6 into display data and displaying the converted data. The specific structure of the remaining amount detector 6 is omitted here.

[0004]

[Problems to be solved by the device]

 When the above two are combined, that is, when the battery level using a nickel-hydrogen battery is displayed on the display section of the device, the thermistor 3 and the remaining level detection section like the battery 10 shown in FIG. 6, a terminal 4 for supplying the temperature detection signal 3a to the charging device and a terminal 7 for supplying the remaining amount detection signal 6a to the charging device can be considered. However, if the terminals 4 and 7 are individually provided in this way, the probability of contact failure increases, and the reliability of the battery 10 tends to decrease.

[0005]

[Means for Solving the Problems]

 The present inventor has noticed that the temperature detection signal 3a is required when the battery unit 2 is charged, the remaining amount detection signal 6a is required when the battery unit 2 is discharged, and both of them are not required at the same time. Therefore, the present invention solves the above-mentioned problems by providing a temperature detection unit that detects the charging temperature of the battery unit and outputs a temperature detection signal, and a remaining capacity detection unit that detects the remaining capacity of the battery unit and outputs a remaining amount detection signal. A remaining amount detection unit, a control unit that determines the charge / discharge state of the battery unit and outputs a charge / discharge determination signal, and the temperature detection signal and the remaining amount detection signal described above according to the charge / discharge determination signal. And a switch for switching and outputting the battery, the switch selectively outputs the temperature detection signal when the battery unit is charged, and the switch outputs the remaining amount detection signal when the battery unit is discharged. It provides a battery that features selective output.

[0006]

【Example】

 Hereinafter, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the battery of the present invention, FIG. 2 is a block diagram showing a main control unit, and FIG. 3 is a diagram showing another example of a remaining amount detection unit and a control unit. is there. The same components as those in the conventional example are designated by the same reference numerals.

The battery 1 shown in FIG. 1 includes a thermistor (temperature detection unit) 3 that detects the temperature of a battery unit (for example, a nickel hydrogen battery) 2 and a remaining amount detection unit 6 that detects the remaining amount of the battery 2. Get

Reference numeral 7 is a switch for switching and outputting the temperature detection signal 3 a and the remaining amount detection signal 6 a, and guiding either one to the terminal 8. In the switch 7, the contact 71 connected to the thermistor 3 and the contact 72 connected to the remaining amount detector 6 are selectively switched by the switch piece 73 connected to the terminal 8. The switch 7 receives a control signal from the control unit 9 described below at its control terminal to control the switching operation of the switch piece 73.

The control unit 9 determines the charging / discharging state of the battery unit 2 and outputs a control signal serving as a charging / discharging determination signal. For example, as shown in FIG. 2, a detection unit 91 and a signal generation unit 92 are provided. Composed of.

The detection unit 91 outputs the potential at the point B with reference to the point A. Since a current flows in the X1 direction when the battery unit 2 is charged, the potential at the point A is higher than that at the point B, and the output of the detection unit 91 has a negative value. Since a current flows in the X2 direction when the battery unit 2 is discharged, the potential at the point B is higher than at the point A and the output of the detection unit 91 has a positive value.

The signal generator 92 outputs a control signal depending on whether the output of the detector 91 is positive or negative. When the output of the detection unit 91 is negative (when the battery unit 2 is being charged), the signal generation unit 92 outputs a control signal for connecting the switch piece 73 to the contact 71 to the control terminal of the switch 7. When the output of the current detecting unit 91 is positive (when the battery unit 2 is discharging), a control signal for connecting the switch piece 73 to the contact 72 is output to the control terminal of the switch 7.

If the battery 1 is configured in this way, the switch piece 73 of the switch 7 is connected to the contact 71 as shown in the figure when the battery section 2 is charged, and the switch piece 73 is shown in the two-dot chain line during discharge. Connects to contact 72. Thereby, the temperature detection signal 3a output from the thermistor 3 when the battery unit 2 is charged can be guided to the terminal 8, and the remaining amount detection signal 6a output from the remaining amount detection unit 6 when the battery 2 is discharged. Can be led to the terminal 8.

Since the battery 1 is configured so that the temperature detection signal 3a or the remaining amount detection signal 6a can be selected, one terminal 8 may be prepared to supply these to the apparatus, and the terminals are individually provided. Compared with the case, there is an advantage that the probability of contact failure is reduced and the reliability is improved.

Needless to say, the charging device and the device to be used may be provided with terminals corresponding to the terminals 8, respectively.

In the above description, the remaining amount detecting unit 6 and the control unit 9 are described separately, but as shown in FIG. 3, the remaining amount detecting unit 6 includes a detecting unit 61 similar to the detecting unit 91. In the case of the operation unit 62 using a CPU, a configuration in which the detection unit 61 is part of the control unit 9 may be considered.

[0017]

[Effect of the device]

 As can be seen from the above description, the battery of the present invention is configured so that the temperature detection signal or the remaining amount detection signal can be selected. Therefore, in order to supply these to the device, one terminal can be prepared and each terminal can be individually supplied. The probability that a contact failure will occur is smaller than the case where it is provided, and there is an effect that reliability is improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a battery of the present invention.

FIG. 2 is a block diagram showing a main control unit.

FIG. 3 is a diagram illustrating another example of a remaining amount detection unit and a control unit.

FIG. 4 is a diagram showing a battery using a nickel hydrogen battery.

FIG. 5 is a diagram showing a battery for detecting the remaining battery level.

FIG. 6 is a diagram showing a problem of a conventional example.

[Explanation of symbols]

 1 Battery 2 Battery Section 3 Thermistor (Temperature Detecting Section) 3a Temperature Detection Signal 6 Remaining Amount Detecting Section 6a Remaining Amount Detecting Signal 7 Switch 9 Control Section

Claims (1)

[Scope of utility model registration request] 1. A temperature detecting unit that detects a charging temperature of a battery unit and outputs a temperature detection signal; a remaining amount detecting unit that detects a remaining capacity of the battery unit and outputs a remaining amount detection signal; A battery provided with a control unit for determining a charge / discharge state of a unit and outputting a charge / discharge determination signal, and a switch for selectively outputting the temperature detection signal and the remaining amount detection signal according to the charge / discharge determination signal. The battery is characterized in that the switch selectively outputs the temperature detection signal when the battery unit is charged, and the switch selectively outputs the remaining amount detection signal when the battery unit is discharged.