Capacitor voltage automatic compensation device

Abstract

The application relates to the technical field of power equipment, in particular to a capacitor voltage automatic compensation device for compensating the energy stored by a charging capacitor, wherein the automatic compensation device comprises a discharge current measurement module, a voltage comparison module and a charging control module; the discharge current measurement module is used for measuring the discharge time and the discharge current of the charging capacitor each time; the voltage comparison module is used for measuring the discharge voltage of the charging capacitor each time; the discharge current measurement module and the voltage comparison module are connected to the charging control module, and the charging control module automatically adjusts the charging voltage according to the values measured by the discharge current measurement module and the voltage comparison module to compensate the energy stored by the charging capacitor; the application effectively maintains the consistency of the discharge energy of the charging capacitor each time, makes the energy converted from the discharge of the charging capacitor into mechanical action basically unchanged, and thus maintains the rapidity, reliability and consistency of the output characteristics of the output action.

Description

Technical Field

[0001] This invention relates to the field of power equipment technology, and in particular to an automatic capacitor voltage compensation device. Background Technology

[0002] Capacitors are energy storage components. In actual use, the amount of energy (charge) discharged by a capacitor is often affected by unstable factors such as ambient temperature and dielectric, which leads to changes in the discharge capacity to the load and affects the speed, reliability and consistency of the output action. Summary of the Invention

[0003] The purpose of this invention is to provide an automatic capacitor voltage compensation device that maintains the consistency of the energy discharged by the capacitor each time, so that the energy converted into mechanical action by the capacitor discharge remains basically unchanged, thereby maintaining the speed, reliability and consistency of the output action and output characteristics.

[0004] To achieve the above objectives, the present invention employs the following technical solution:

[0005] An automatic capacitor voltage compensation device is provided for compensating the energy stored in a charging capacitor. The automatic compensation device includes a discharge current measurement module, a voltage comparison module, and a charging control module.

[0006] The discharge current measurement module is connected to the charging capacitor and is used to measure the discharge time and discharge current of the charging capacitor each time.

[0007] The voltage comparison module is connected to the charging capacitor and is used to measure the discharge voltage of the charging capacitor each time.

[0008] The discharge current measurement module and the voltage comparison module are both connected to the charging control module, and the charging control module automatically adjusts the charging voltage to compensate for the energy stored in the charging capacitor based on the values ​​measured by the discharge current measurement module and the voltage comparison module.

[0009] In a further technical solution, the charging control module compares the value of the integrated discharge current and discharge time of the charging capacitor measured by the discharge current measurement module with the initial value. If the value is too low, the charging voltage is increased to compensate for the energy stored in the charging capacitor by using the voltage measured by the voltage comparison module as a reference.

[0010] In a further technical solution, the magnitude of the increase in charging voltage is determined by the product of the increased voltage and the capacitance being equal to the amount of charge in the previous charge.

[0011] Compared with the prior art, the present invention has the following technical effects:

[0012] The automatic capacitor voltage compensation device provided by this invention, through the cooperation of a discharge current measurement module, a voltage comparison module, and a charging control module, effectively maintains the consistency of the discharge energy of the charging capacitor each time, so that the energy of the charging capacitor discharge into mechanical action remains basically unchanged, thereby maintaining the speed, reliability, and consistency of output action and output characteristics.

[0013] Other features and advantages of the present invention will be described in detail in the following specific embodiments. Attached Figure Description

[0014] Figure 1 The diagram shows a structural schematic of an automatic capacitor voltage compensation device according to a specific embodiment of the present invention;

[0015] The labels in the diagram are as follows: 1. Charging capacitor; 2. Discharge current measurement module; 3. Voltage comparison module; 4. Charging control module. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further explained below with reference to the specific accompanying drawings.

[0017] As mentioned above, in combination Figure 1 As shown, the present invention provides an automatic capacitor voltage compensation device for compensating the energy stored in the charging capacitor 1. The automatic compensation device includes a discharge current measurement module 2, a voltage comparison module 3, and a charging control module 4.

[0018] The discharge current measurement module 2 is connected to the charging capacitor 1 and is used to measure the discharge time and discharge current of the charging capacitor 1 each time.

[0019] The voltage comparison module 3 is connected to the charging capacitor 1 and is used to measure the discharge voltage of the charging capacitor 1 each time.

[0020] The discharge current measurement module 2 and the voltage comparison module 3 are both connected to the charging control module 4, and the charging control module 4 automatically adjusts the charging voltage to compensate for the energy stored in the charging capacitor 1 based on the values ​​measured by the discharge current measurement module 2 and the voltage comparison module 3.

[0021] In this invention, the charging control module 4 compares the value of the discharge current of the charging capacitor 1 after integrating the discharge time with the initial value, as measured by the discharge current measurement module 2. If the value is too low, the charging voltage is increased to compensate for the energy stored in the charging capacitor 1 by using the voltage measured by the voltage comparison module 3 as a reference.

[0022] More specifically, the magnitude of the increase in charging voltage is determined by the product of the increased voltage and the capacitance being equal to the amount of charge in the previous charge.

[0023] In one specific embodiment of the present invention

[0024] Assuming the charging capacitor has a capacitance of C = 1000uF, when the integral of the current over time calculated by the charging control module 4 is 5 coulombs (the initial value was 5.05 coulombs), it is 0.05 coulombs too low. At this point, the voltage measured by the voltage comparison module 3 is 500V. According to the capacitor energy formula = Q * U / 2, if the energy remains constant, the charge and voltage are inversely proportional. Therefore, the charging control module 4 calculates the output voltage value for the next charge.

[0025] =5.05*500 / 5=505V. This keeps the discharge energy of charging capacitor 1 constant.

[0026] The automatic capacitor voltage compensation device provided by the present invention has a simple structure and can effectively ensure the consistency of the discharge energy of the charging capacitor 1 each time, so that the energy of the charging capacitor 1 discharged and converted into mechanical action remains basically unchanged, thereby maintaining the speed, reliability and consistency of output action and output characteristics.

[0027] The foregoing has shown and described the basic principles, main features, and characteristics of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. An automatic capacitor voltage compensation device for compensating the energy stored in a charging capacitor, characterized in that, The automatic compensation device includes a discharge current measurement module, a voltage comparison module, and a charging control module; The discharge current measurement module is connected to the charging capacitor and is used to measure the discharge time and discharge current of the charging capacitor each time. The voltage comparison module is connected to the charging capacitor and is used to measure the discharge voltage of the charging capacitor each time. The discharge current measurement module and the voltage comparison module are both connected to the charging control module, and the charging control module automatically adjusts the charging voltage to compensate for the energy stored in the charging capacitor based on the values ​​measured by the discharge current measurement module and the voltage comparison module.

2. The automatic capacitor voltage compensation device according to claim 1, characterized in that, The charging control module compares the value of the charging capacitor's discharge current after integration with the discharge time, as measured by the discharge current measurement module, with the initial value. If the value is too low, the charging voltage is increased to compensate for the energy stored in the charging capacitor, using the voltage measured by the voltage comparison module as a reference.

3. The automatic capacitor voltage compensation device according to claim 2, characterized in that, The magnitude of the increase in charging voltage is determined by the product of the increased voltage and the capacitance being equal to the amount of charge in the previous charge.

Images