JPH04136580U - Battery artificial power supply device - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a battery pseudo power supply device that can obtain an output voltage and internal resistance that have the same characteristics as the aging characteristics of a battery. [Configuration] A microcomputer 3 that detects the discharge voltage characteristics and internal resistance characteristics of the battery and stores the detected discharge voltage characteristics and internal resistance characteristics, and a time setting device 11 that sets the elapsed time from the start of discharge. , constant voltage circuit 14
Then, the output voltage of the constant voltage circuit 14 is controlled using the discharge voltage stored in the microcomputer 3 as a reference voltage corresponding to the time set by the time setting device 11, and the output voltage of the constant voltage circuit 14 is controlled by the microcomputer 3 corresponding to the set time. 3, means for controlling the internal resistance of the constant voltage circuit 14 by means of a voltage control resistor 13 is provided for the internal resistance of the memory.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention applies to batteries in the design and evaluation of devices that use batteries as energy sources. The present invention relates to a battery pseudo power supply device that serves as an alternative energy source.

0002

[Conventional technology]

Traditionally, batteries have been used as an alternative in the design and evaluation of devices that use batteries as energy sources. There was no battery artificial power supply that could be used as a replacement energy source.

0003

[Problem that the idea aims to solve]

Generally, when a battery is discharged after being charged, the voltage drops and the internal Resistance will also increase. When designing equipment powered by such unstable batteries, Therefore, the design must be designed to withstand as much voltage drop or increase in internal resistance as possible. It won't happen. However, batteries change from moment to moment, and for example, the limit point If you try to retain the equipment but are unable to do so, and if you want to evaluate the equipment, There was a problem in that it was necessary to keep monitoring whether it was reaching its breaking point. This invention temporarily stores the discharge characteristics of the battery and then stores it at any time during the discharge process. The purpose is to provide a battery pseudo power supply device that serves as a voltage source for internal resistance and internal resistance. shall be.

0004

[Means to solve the problem]

The battery pseudo power supply device of the present invention is characterized by the discharge voltage characteristics and internal resistance characteristics of the battery. A detection unit that detects the characteristics and a discharge that stores the detected discharge voltage characteristics and internal resistance characteristics. A discharge characteristic reading section consisting of a characteristic storage section and a setting of elapsed time from the start of discharge. Discharge corresponding to the time set by the time setting device and the power supply circuit and the time setting device A first control unit that controls the output voltage of the power supply circuit to the memory discharge voltage of the characteristic storage unit and a time setting unit. The power supply circuit is applied to the internal resistance stored in the discharge characteristic storage unit corresponding to the time set by the meter. and a control power supply unit consisting of a second control unit that controls the internal resistance of the circuit. shall be.

[0005]

[Effect]

According to the battery pseudo power supply device of the present invention, the battery is The discharge voltage characteristics and internal resistance characteristics of the battery are detected and stored. time setter When the elapsed time from the start of discharge is set by The output voltage of the circuit is controlled to the discharge voltage stored in the discharge characteristic storage unit corresponding to the set time. and the internal resistance of the power supply circuit is discharged corresponding to the time set by the second control unit. Controlled by the internal resistance stored in the characteristic storage section. Therefore, the power supply circuit The output voltage and internal resistance are the same as those of the previous model.

[0006]

【Example】

The present invention will be explained below with reference to examples. FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. The battery pseudo power supply device of this embodiment includes a discharge characteristic reading storage section 1 and a control power supply section. It consists of 2. The discharge characteristic reading section 1 is under the control of the microcomputer 3. An electronic load device 5 that is turned on and off and serves as a load for the battery 4; A resistor 6 for converting the flowing current into voltage, and an A/D using the voltage of the resistor 6 as input. An A/D converter 7 that converts the data and outputs the converted output to the microcomputer 3, and a battery. A/D conversion is performed using the voltage of relay 4 as input, and the converted output is output to microcomputer 3. The A/D converter 8 is equipped with an A/D converter 8.

[0007] The electronic load device 5 is driven under the control of the microcomputer 3. 5 consumes the current in actual use state, reads the output of A/D converter 8, and connects the battery. Measure the discharge voltage characteristics of 4 and store the measured discharge voltage characteristics in the microcomputer 3. let The stored discharge voltage characteristics are as shown by curve a in FIG.

Furthermore, under the control of the microcomputer 3, the load by the electronic load device 5 is intermittently and momentarily varied, and the microcomputer 3 calculates the current flowing from the battery 4 and the voltage of the battery 4 at that time. are read through the A/D converter 7 and A/D converter 8, and the internal resistance of the battery 4 is calculated by the microcomputer 3 from the read current and voltage values. In other words, if a load change is applied such that the load current of the battery 4 changes from I ₁ to I ₂ and the battery voltage at that time changes from E ₁ to E ₂ , then (I ₂ - I ₁ )/(E ₁ - E ₂ ) The internal resistance r is determined by the calculation, and by performing this calculation at appropriate intervals and storing it together with the elapsed time, the internal resistance characteristics of the battery 4 are stored in the microcomputer 3. The stored internal resistance characteristics are as shown in curve b in Figure 2.

[0009] The control power supply unit 2 generates voltage and voltage according to the stored discharge voltage characteristics and internal resistance characteristics. Read out the internal resistance by specifying the elapsed time from the start of discharge, and check the readout voltage. It generates pressure and internal resistance. The microcontroller outputs 11 set values of the time setter that specifies the time on the discharge voltage characteristics. The elapsed time from the start of discharge specified by the time setting device 11 is inputted into the computer 3. Microphone the voltage value on the discharge voltage characteristic and the resistance value on the internal resistance characteristic over time. The contents of the memory of the computer 3 are read out. The read voltage value is sent to the D/A converter 9. The converted analog signal is input as a reference voltage and converted to an analog signal. It is supplied to the series controlled constant voltage circuit 14 as a reference voltage. Therefore, series controlled type The output voltage of the constant voltage circuit 14 is controlled to a reference voltage by the output of the D/A converter 9. That will happen.

0010 On the other hand, the resistance based on the internal resistance characteristics read from the memory contents of the microcomputer 3 The resistance value is input to a D/A converter 10 and converted into an analog signal. Series controlled constant voltage A resistor 15 converts the current flowing through the circuit 14 into a voltage. Operational amplification of the voltage of resistor 15 The internal resistance of the series control type constant voltage circuit 14 is detected by the battery 4. Control the internal resistance of the series control type constant voltage circuit 14 so that it has a characteristic resistance value. A voltage control resistor 13 consisting of a field effect transistor is connected by a D/A converter 10. Control using converted analog signals.

[0011] Therefore, depending on the elapsed time from the start of discharge specified by the time setting device 11, A voltage determined by is output from the series control type constant voltage circuit 14, and Elapsed time from the time when the internal resistance of the pressure circuit 14 started discharging specified by the time setting device 11 The internal resistance value of the battery 4 is determined by time. Therefore, after discharge The voltage and internal resistance of the battery 4 at any given time will form a power source. Become.

0012

[Effect of the idea]

As explained above, according to the present invention, the discharge voltage characteristics and internal resistance characteristics of the battery are The detected discharge voltage characteristics and internal resistance characteristics are memorized, and the discharge voltage characteristics and internal resistance characteristics are memorized. By setting the elapsed time, the memory discharge voltage corresponding to the set time is set. Controls the output voltage of the power supply circuit, and applies the power supply circuit to the memory internal resistance corresponding to the set time. Since the internal resistance of the circuit is controlled, the voltage at any time after the start of discharge And internal resistance power is to be obtained, and the voltage at the breaking point is reached when designing the equipment. This has the effect of making it easier to maintain control and detect where the breaking point is when evaluating equipment. Ru.

[Brief explanation of drawings]

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

FIG. 2 is a characteristic diagram schematically showing discharge voltage characteristics and internal resistance characteristics stored according to an embodiment of the present invention.

[Explanation of symbols]

1 Discharge characteristic reading section 2 Control power supply section 3 Microcomputer 4 Battery 5 Electronic load device 7 and 8 A/D converter 9 and 10 D/A converter 11 Time setting device 12 Operational amplifier 13 Voltage control resistor 14 Series control type constant voltage circuit

Claims (1)

[Scope of utility model registration request] 1. A discharge characteristic reading section comprising: a detection section for detecting discharge voltage characteristics and internal resistance characteristics of a battery; and a discharge characteristic storage section for storing the detected discharge voltage characteristics and internal resistance characteristics; a time setter for setting the elapsed time of the time setter, a power supply circuit, a first control section for controlling the output voltage of the power supply circuit to the stored discharge voltage in the discharge characteristic storage section corresponding to the time set by the time setter; A battery pseudo power supply device comprising: a control power supply section comprising a discharge characteristic storage section corresponding to a time set by a setting device, a stored internal resistance, and a second control section for controlling an internal resistance of a power supply circuit. .