Super capacitor discharging and capacity measuring device

Abstract

The invention relates to the technical field of capacitor discharging, in particular to a super capacitor discharging and capacity measuring device which comprises a discharging device power part and a discharging device control and measurement part. A super capacitor is discharged through a discharging device power part, and the capacity of the capacitor is calculated through a discharging device control and measurement part.

Description

Technical Field

[0001] The present invention relates to the technical field of capacitor discharge, and in particular to a supercapacitor discharge and capacity measurement device. Background Art

[0002] In the wind power generation sector, some wind turbine pitch drives use supercapacitors as energy storage devices. During maintenance work, supercapacitors, due to their high charge storage capacity, can store large amounts of charge. The process of dissipating this charge through self-discharge is quite lengthy, sometimes lasting nearly a full working day.

[0003] The current maintenance method is to use a handheld power resistor to clamp the two ends of the supercapacitor for discharge. The discharge speed will respond faster, and it will take about 2 hours to complete the discharge.

[0004] Moreover, during the discharge process, personnel are required to observe the temperature of the discharge resistor in real time. If the discharge resistor works for a long time, the temperature will reach a very high temperature. In severe cases, the discharge resistor will be burned or the operator will be scalded. In addition, during maintenance work, the capacitance value of the capacitor, as an important performance indicator, cannot be measured. Personnel are required to start the variable pitch system opening and closing times to make a judgment, resulting in poor practicality. Therefore, a supercapacitor discharge and capacity measurement device is urgently needed to improve the above problems. Summary of the Invention

[0005] To solve the above technical problems, the present invention provides a supercapacitor discharge and capacity measurement device that discharges a supercapacitor through a power part of a discharge device and calculates the capacity of the capacitor through a control and measurement part of the discharge device.

[0006] The supercapacitor discharge and capacity measurement device of the present invention comprises a discharge device power part and a discharge device control and measurement part;

[0007] The supercapacitor is discharged through the power part of the discharge device, and the capacity of the capacitor is calculated through the control and measurement part of the discharge device.

[0008] Preferably, the power part of the discharge device is composed of multiple groups;

[0009] The power part of the discharge device includes a power resistor, a MOS tube, a capacitor interface and a MOS tube driver. The power resistor, the capacitor interface and the MOS tube driver are all connected to the MOS tube. The MOS tube is controlled to be turned on by the MOS tube driver. After the MOS tube is turned on, the current flows from the capacitor interface into the MOS tube and then into the power resistor. The current generates heat in the power resistor and consumes electrical energy.

[0010] Preferably, a voltage, current and temperature measuring unit is provided between the power resistor and the MOS tube; the current, temperature and voltage in the power resistor are measured in real time by the voltage, current and temperature measuring unit, so as to limit the current flowing into the power resistor when the temperature of the power resistor is too high.

[0011] Preferably, the control and measurement part of the discharge device includes a single-chip microcomputer processor, a human-computer interaction interface and a power supply unit, the human-computer interaction interface and the power supply unit are both connected to the single-chip microcomputer processor, and the MOS tube drive and the voltage, current and temperature measurement unit are both connected to the single-chip microcomputer processor; during discharge, the single-chip microcomputer processor samples and calculates the voltage, current and temperature measurement unit in real time, realizes real-time sampling of the effective values ​​of voltage and current, and then infers the actual capacity of the supercapacitor through the effective values ​​combined with the definition of discharge time and capacitance.

[0012] Preferably, the single chip processor drives the MOS tube through a PWM control waveform, thereby facilitating control of the current flow.

[0013] Preferably, the human-computer interaction interface is a color LED touch screen, which facilitates the staff to control the supercapacitor discharge and capacity measurement device.

[0014] Compared with the prior art, the present invention has the following advantages: the device can discharge quickly and safely, and the power devices for discharge are installed in the box, and the temperature is detected in real time during use, so there will be no overheating, burning or injury incidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the power part of the discharge device of the present invention;

[0016] Figure 2 It is a structural diagram of the control and measurement part of the discharge device of the present invention.

[0017] Markings in the accompanying figure: 1. Power resistor; 2. MOS tube; 3. Capacitor interface; 4. MOS tube driver; 5. Voltage, current and temperature measurement unit; 11. Single-chip microcomputer processor; 13. Human-computer interaction interface; 14. Power supply unit. DETAILED DESCRIPTION

[0018] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0019] Example: Figure 1 and Figure 2As shown, the supercapacitor discharge and capacity measurement device includes a discharge device power part and a discharge device control and measurement part;

[0020] The power part of the discharge device is divided into multiple groups;

[0021] The power part of the discharge device includes a power resistor 1, a MOS tube 2, a capacitor interface 3 and a MOS tube driver 4. The power resistor 1, the capacitor interface 3 and the MOS tube driver 4 are all connected to the MOS tube 2.

[0022] A voltage, current and temperature measuring unit 5 is provided between the power resistor 1 and the MOS tube 2;

[0023] The control and measurement part of the discharge device includes a single-chip processor 11, a human-computer interaction interface 13 and a power supply unit 14. The human-computer interaction interface 13 and the power supply unit 14 are both connected to the single-chip processor 11. The MOS tube driver 4 and the voltage, current and temperature measurement unit 5 are both connected to the single-chip processor 11.

[0024] The single chip processor 11 drives the MOS tube driver 4 through the PWM control waveform;

[0025] The human-computer interaction interface 13 is a color LED touch screen;

[0026] The MOS transistor driver 4 is controlled by the single-chip processor 11, and the MOS transistor driver 4 is used to control the conduction of the MOS transistor 2. After the MOS transistor 2 is turned on, current flows from the capacitor interface 3 into the MOS transistor 2 and then into the power resistor 1. The current generates heat in the power resistor 1 and consumes electrical energy. At the same time, the current, temperature, and voltage in the power resistor 1 are measured in real time by the voltage, current, and temperature measurement unit 5. The data collected by the voltage, current, and temperature measurement unit 5 are analyzed and calculated by the single-chip processor 11. This facilitates limiting the current flowing into the power resistor 1 when the temperature of the power resistor 1 is too high. The single-chip processor 11 can also control the MOS transistor driver 4 to increase the current flow rate according to usage requirements. During use of the device, parameters during device operation are displayed in real time through the human-computer interaction interface 13, facilitating real-time observation and processing by operators, thereby improving the practicality of the device.

[0027] The installation, connection or setting methods of the supercapacitor discharge and capacity measurement device of the present invention are all common mechanical methods. As long as they can achieve their beneficial effects, they can be implemented. Technicians in this industry only need to install and operate them according to the accompanying instruction manual, without the need for technical personnel in this field to make creative efforts.

[0028] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A supercapacitor discharge and capacity measurement device, characterized in that: It includes the discharge device power part and the discharge device control and measurement part.

2. The supercapacitor discharge and capacity measurement device according to claim 1, wherein: The power part of the discharge device is divided into multiple groups; The power part of the discharge device includes a power resistor (1), a MOS tube (2), a capacitor interface (3) and a MOS tube driver (4), and the power resistor (1), the capacitor interface (3) and the MOS tube driver (4) are all connected to the MOS tube (2).

3. The supercapacitor discharge and capacity measurement device according to claim 2, characterized in that: A voltage, current and temperature measuring unit (5) is provided between the power resistor (1) and the MOS tube (2).

4. The supercapacitor discharge and capacity measurement device according to claim 3, characterized in that: The control and measurement part of the discharge device comprises a single-chip processor (11), a human-machine interaction interface (13) and a power supply unit (14); the human-machine interaction interface (13) and the power supply unit (14) are both connected to the single-chip processor (11); and the MOS tube driver (4) and the voltage, current and temperature measurement unit (5) are both connected to the single-chip processor (11).

5. The supercapacitor discharge and capacity measurement device according to claim 4, characterized in that: The single chip processor (11) drives the MOS tube driver (4) through a PWM control waveform.

6. The supercapacitor discharge and capacity measurement device according to claim 4, characterized in that: The human-computer interaction interface (13) is a color LED touch screen.

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