A supercapacitor energy offloading system based on high frequency electromagnetic energy

Abstract

The utility model discloses a kind of based on high-frequency electromagnetic energy's super capacitor energy release system, including DSP signal processing and control circuit, display module, communication and external control input circuit, system power module, super capacitor direct current input circuit, input current detection circuit, direct current boost and voltage stabilizing circuit, overcurrent protection circuit, bridge type high-frequency inverter circuit, direct-coupled circuit, electromagnetic conversion and eddy current generation power module, heat dissipation system.The utility model can effectively solve the mechanical switch of existing super capacitor high-voltage application system to super capacitor discharge time's mechanical switch and draw spark problem, while effectively realizing the constant current or large area constant power of the full voltage range of external high-voltage super capacitor energy storage system Continuous uninterrupted discharge, ensure the 0V discharge of high-voltage super capacitor energy storage system, to further ensure the equipment safety and personnel safety of application system.

Description

Technical Field

[0001] This utility model relates to the field of supercapacitor module technology, specifically to a supercapacitor energy dissipation system based on high-frequency electromagnetic energy. Background Technology

[0002] With the increasing application of supercapacitors in various fields such as new energy, transportation, industry, military, and medical equipment, supercapacitor application systems, especially rack-mounted systems, inevitably require maintenance or parameter changes due to various reasons during actual use. In such cases, it is necessary to release the energy of the entire original system.

[0003] In traditional methods, supercapacitor manufacturers typically use a combination of high-power discharge resistors and high-voltage DC circuit breakers to discharge the entire system. However, this traditional method is prone to problems. When the high-voltage DC circuit breaks down, it can cause arcing due to air breakdown, frequently resulting in circuit breaker failure in actual projects. Furthermore, because the discharge resistor has a fixed resistance, theoretical calculations can only be performed using the full-capacity storage voltage. As the supercapacitor's storage voltage decreases, its discharge current also decreases proportionally. When the voltage drops to a relatively low level, the discharge current becomes very small, leading to a very long discharge time if the target voltage is set to 0V. This is unacceptable in some applications.

[0004] Furthermore, it is difficult to completely discharge the supercapacitor voltage through an external fixed discharge resistor in a short time. However, the internal resistance of the supercapacitor module is very low. When this happens, if there is an accidental short circuit, it may cause a very serious safety accident, which is often encountered in real-world projects.

[0005] How to avoid arcing during operation of the discharge switch, and how to solve the problems of slow and incomplete discharge in traditional methods, have become the research directions of those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide a supercapacitor energy dissipation system based on high-frequency electromagnetic energy, in order to solve the technical problems in the background art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A supercapacitor energy dissipation system based on high-frequency electromagnetic energy includes the following components connected in sequence:

[0009] The DC input circuit for the supercapacitor is used to connect the supercapacitor's energy storage voltage and perform high-frequency filtering.

[0010] The input current detection circuit is connected to the output terminal of the supercapacitor DC input circuit and is used to detect the discharge current.

[0011] The DC boost and voltage regulator circuit is connected to the output of the input current detection circuit and is used to boost the input voltage to the set high voltage and regulate it.

[0012] The system power module is connected to the output of the DC boost and voltage regulation circuit to supply power to each module of the system.

[0013] Overcurrent protection circuit, connected to the output terminal of DC boost and voltage regulation circuit;

[0014] A bridge-type high-frequency inverter circuit, connected to the output of an overcurrent protection circuit, converts high-voltage DC into a high-frequency square wave.

[0015] A DC blocking coupling circuit is connected to the output of a bridge high-frequency inverter circuit to filter out DC components.

[0016] The electromagnetic conversion and eddy current generation power module is connected to the output of the DC blocking coupling circuit. Eddy current heating is generated on the ferromagnetic plate through a high-frequency coil and magnetic material.

[0017] The heat dissipation system is thermally connected to the electromagnetic conversion and eddy current generation power module to dissipate heat to the external space.

[0018] The DSP signal processing and control circuit is connected to the input current detection circuit, DC boost and voltage regulation circuit, overcurrent protection circuit, bridge high-frequency inverter circuit, and system power module to achieve closed-loop control.

[0019] The display module, connected to the DSP signal processing and control circuit, is used to display system parameters;

[0020] The communication and external control input circuit connects to the DSP signal processing and control circuit, receives external commands, and uploads status.

[0021] In some embodiments, the processor of the DSP signal processing and control circuit includes a DSP or a microcontroller;

[0022] The display module uses at least one of OLED, LCD, or digital tube.

[0023] In some embodiments, the communication and external control input circuit supports at least one of the following communication methods: CAN communication, isolated digital I / O, RS485 or RS232.

[0024] The system power supply module is implemented using a switching power supply or a traditional transformer transformation method.

[0025] In some embodiments, the filtering method of the supercapacitor DC input circuit includes a thin-film capacitor or an electrolytic capacitor; its voltage detection method includes resistor series voltage division or isolated photoelectric / magnetic detection.

[0026] In some embodiments, the current sampling method of the input current detection circuit includes sampling resistors in series or isolated photoelectric / magnetic detection.

[0027] In some embodiments, the DC boost and regulation circuit adopts a non-isolated boost topology.

[0028] In some embodiments, the current detection method of the overcurrent protection circuit includes sampling resistor series or isolated photoelectric / magnetic detection.

[0029] In some embodiments, the switching transistors of the bridge high-frequency inverter circuit include at least one of silicon carbide MOSFETs, ordinary MOSFETs, IGBTs, or high-voltage transistors.

[0030] In some embodiments, the DC blocking coupling circuit is implemented using at least one non-polar capacitor, either a thin-film capacitor or a ceramic capacitor.

[0031] In some embodiments, the high-frequency coil of the electromagnetic conversion and eddy current generation power module is composed of at least one of multi-strand enameled wire, multi-strand cotton-covered wire, or insulating copper sheet.

[0032] The magnetic material of the electromagnetic conversion and eddy current generation power module includes manganese-zinc ferrite or nickel-zinc ferrite.

[0033] This utility model has the following beneficial effects:

[0034] 1. Compared with the traditional method of applying current through a resistor, the size of this utility model is greatly reduced.

[0035] 2. Effectively achieves constant current discharge across the entire voltage range of the external supercapacitor high-voltage system, significantly reducing the effective discharge time.

[0036] 3. It can achieve 0V discharge to external supercapacitor high-voltage energy storage systems.

[0037] 4. Effectively avoids the DC high voltage ignition and arcing phenomenon in existing methods.

[0038] 5. It effectively achieves intelligent control, eliminating the need for manual operation of mechanical switches.

[0039] 6. It adopts digital IO input / output or CAN communication control methods, which can flexibly match various upper computer control systems to realize network control of large project systems.

[0040] 7. The effective high-voltage isolation method using electromagnetic high integration further improves the safety of the system.

[0041] 8. Due to the significant reduction in overall size and the integration of communication interfaces, the overall integration of the application system can be further improved. Attached Figure Description

[0042] Figure 1 This is a block diagram of the system components. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0044] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0045] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0046] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0047] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or display that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or display.

[0048] The following will combine Figure 1 This application provides a detailed description of a supercapacitor energy dissipation system based on high-frequency electromagnetic energy, as illustrated in the embodiments of this application. It is worth noting that the following embodiments are merely illustrative of this application and do not constitute a limitation thereof.

[0049] Example 1:

[0050] like Figure 1 As shown, this utility model discloses a supercapacitor energy dissipation system based on high-frequency electromagnetic energy. It includes a DSP signal processing and control circuit, a display module, a communication and external control input circuit, a system power supply module, a supercapacitor DC input circuit, an input current detection circuit, a DC boost and voltage regulation circuit, an overcurrent protection circuit, a bridge high-frequency inverter circuit, a DC blocking coupling circuit, an electromagnetic conversion and eddy current generation power module, and a heat dissipation system.

[0051] When energy release is required in a high-voltage supercapacitor energy storage system, the voltage of the supercapacitor energy storage system is input from the supercapacitor DC input circuit. After internal high-frequency filtering, the input current detection circuit detects the supercapacitor and discharge current. Then, the DC boost and stabilization circuit boosts the input DC voltage to the system's set high voltage and stabilizes it. The boosted and stabilized DC high voltage is sent to the system power circuit to convert it into different DC voltages required for the operation of each sub-module circuit of this utility model. On the other hand, it is sent to the bridge high-frequency inverter circuit through the overcurrent protection circuit to be converted into a high-frequency alternating high-voltage square wave voltage. After the DC component of this high-frequency high voltage is removed by the DC blocking coupling circuit, it is sent to the electromagnetic conversion and eddy current generation power module. It is converted into high-frequency electromagnetic energy through the module's high-frequency coil. Then, the high-frequency magnetic energy is transferred to the ferromagnetic output board through the structurally designed magnetic permeable material. High-frequency eddy currents are generated on the ferromagnetic output board, thereby converting the energy into heat. The heat is then transferred to the natural space through a heat dissipation system composed of aluminum material. At the same time, the DC fan of the heat dissipation system accelerates the wind-powered heat exchange speed. In this series of energy conversion processes, each sub-module unit is uniformly analyzed and controlled by the DSP signal processing and control circuit, and the main parameter data are displayed on the display module. The device operates by receiving control commands from the upper control system or uploading the device's operating status and data through the communication and external control input circuit. The system achieves seamless and continuous energy conversion through the aforementioned high-frequency electronic means, without breaking down the air and generating DC voltage arcing during the process. By controlling the frequency of electromagnetic conversion, ultra-low frequency short-circuit energy consumption can be achieved, thereby achieving the goal of reliable 0V discharge of the supercapacitor. The above system logic achieves the comprehensive effect of this utility model.

[0052] The DSP signal processing and control circuit uses a digital signal processor based on the TMS320F280025, along with its peripheral circuits, to realize functions such as acquisition of various analog signals, data analysis and calculation, control logic input and output, and communication encoding and decoding.

[0053] The display module is responsible for displaying key system data and realizing the visual output function of human-computer interaction.

[0054] The communication and external control input circuit realizes the input and output of external digital IO signals, as well as the signal interaction between the local device and the upper control system. The communication function in this utility model adopts the CAN communication method.

[0055] The system power module converts the boosted and regulated DC high voltage into the DC power supply voltage required for the operation of each sub-functional module of the system, ensuring that each sub-functional module can work normally.

[0056] The supercapacitor DC input circuit is the total energy input environment of the system. The main functions of this circuit are to perform high-frequency bidirectional filtering on the input supercapacitor high voltage and to detect the input voltage.

[0057] The input current detection circuit is mainly used to detect the current input to the external supercapacitor voltage. By detecting the input current and cooperating with the voltage detection function of the supercapacitor DC input circuit, the constant current discharge or constant power discharge function of the external supercapacitor is realized through the calculation and control of the DSP control unit.

[0058] The DC boost and regulation circuit implements the functions of boosting and regulating the input DC voltage. Due to the inherent characteristics of the external supercapacitor, its voltage will continuously decrease during the discharge process until it discharges to 0V. However, the subsequent capacitor must be above a certain voltage to work normally. This unit circuit performs high-frequency boost and regulation of the input voltage to ensure the normal operation of the subsequent circuit.

[0059] The overcurrent protection circuit is mainly used to protect the maximum current of the high-frequency function conversion. Its function is to protect the safe operation of the switching MOSFET in the next stage bridge high-frequency inverter circuit, so that its maximum current does not exceed the maximum safe operating current of the switching MOSFET.

[0060] The bridge-type high-frequency inverter circuit, through the system DSP control circuit and the driving circuit of this unit, enables the internal switching MOS array to operate in H-bridge mode, continuously converting the high-voltage stable DC voltage into a high-frequency square wave voltage, which is then supplied to the subsequent power conversion circuit.

[0061] The DC blocking coupling circuit is located between the bridge high-frequency inverter circuit and the electromagnetic conversion and eddy current generating power module. Its function is to isolate the DC component and allow the passage of high-frequency effective AC current.

[0062] The electromagnetic conversion and eddy current generation power module mainly consists of a high-frequency electromagnetic coil, a high-frequency magnetic material, and a ferromagnetic conversion plate. Its function is to convert high-frequency high-voltage current into a high-frequency magnetic field through the high-frequency electromagnetic coil, and then force the magnetic lines of force to the ferromagnetic conversion plate through the high-frequency magnetic material. The ferromagnetic conversion plate generates high-frequency ferromagnetic eddy currents, converts high-frequency electromagnetic energy into heat energy in the ferromagnetic conversion plate, and transfers the heat to the aluminum heat dissipation system through mechanical and physical structures.

[0063] The heat dissipation system consists of an aluminum radiator and a working fan. Its function is to accelerate the heat exchange speed between the air and the aluminum radiator through wind power, so as to realize the heat exchange and heat dissipation function between the equipment and the natural space.

[0064] Preferably, the DSP signal processing and control circuit uses a digital signal processor based on the TMS320F280025, along with its peripheral circuits, to realize the overall analog and digital signal integrated operation, logic control, and communication encoding and decoding functions of the system.

[0065] Preferably, the display module uses an OLED display screen to display local signals, which is suitable for a wide temperature range.

[0066] Preferably, the communication with the external control input circuit uses CAN isolation and optically coupled isolated digital I / O status communication.

[0067] Preferably, the system power supply module adopts a switching power supply circuit with a wide input voltage range.

[0068] Preferably, the supercapacitor DC input circuit mainly consists of a high-voltage thin-film capacitor and a resistive voltage divider voltage detection circuit.

[0069] Preferably, the input current detection circuit uses a copper resistor sampling circuit to achieve current / voltage conversion, and uses a rail-to-rail low-voltage operational discharger to achieve a positive proportional amplifier, sending the signal representing the magnitude of the discharged current to the analog input pin of the DSP in voltage mode.

[0070] Preferably, the DC boost and regulation circuit adopts a single-stage BOOST boost circuit composed of a power MOSFET and an iron-silicon-aluminum power inductor, and realizes the closed-loop DC boost and regulation function through a secondary voltage detection circuit composed of a resistor series voltage divider circuit, and through the operation and timing control of the DSP signal processing and control circuit.

[0071] Preferably, the overcurrent protection circuit uses a high-frequency alternating current transformer and a high-frequency rectifier, filter and integrator circuit to realize current detection, and sends it to the digital comparator input pin of the DSP signal processing and control circuit through a voltage follower composed of a rail-to-rail low-voltage operational discharger. The overcurrent blocking of the bridge high-frequency inverter circuit is realized by setting the comparison value internally.

[0072] Preferably, the bridge-type high-frequency inverter circuit uses a bidirectional inverter circuit with an H-bridge configuration composed of silicon carbide high-voltage MOS transistors.

[0073] Preferably, the DC blocking coupling circuit is implemented by connecting multiple DC metal oxide film capacitors with a withstand voltage of 1600V and 220nF in parallel.

[0074] Preferably, the electromagnetic conversion and eddy current generation power module uses multi-strand yarn-covered wire as the high-frequency power conversion coil and manganese zinc ferrite material as the high-frequency magnetic permeability material. A 5mm thick iron plate is used as the ferromagnetic power turbine conversion plate to comprehensively realize the high-frequency turbine electromagnetic energy conversion function.

[0075] Preferably, the heat dissipation system consists of an airfoil aluminum heat sink and a 12V DC dual ball bearing fan.

[0076] This invention effectively solves the problem of mechanical switching and arcing during supercapacitor discharge in existing high-voltage supercapacitor application systems. Simultaneously, it effectively achieves continuous and uninterrupted discharge of constant current or large-area constant power across the entire voltage range of external high-voltage supercapacitor energy storage systems, ensuring 0V discharge to the high-voltage supercapacitor energy storage system, thereby further guaranteeing the safety of equipment and personnel in the application system. The adoption of digital I / O communication and isolated CAN communication further enhances the flexibility of large-scale application system design, enabling intelligent control and distributed network control schemes for the application system. It also provides integrated management and design for the application system and effectively assists in the thermal management design of the application system.

[0077] The above description is only a preferred embodiment of the present utility model and is used to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A supercapacitor energy dissipation system based on high-frequency electromagnetic energy, characterized in that, Including those connected sequentially: The DC input circuit for the supercapacitor is used to connect the supercapacitor's energy storage voltage and perform high-frequency filtering. The input current detection circuit is connected to the output terminal of the supercapacitor DC input circuit and is used to detect the discharge current. The DC boost and voltage regulator circuit is connected to the output of the input current detection circuit and is used to boost the input voltage to the set high voltage and regulate it. The system power module is connected to the output of the DC boost and voltage regulation circuit to supply power to each module of the system. Overcurrent protection circuit, connected to the output terminal of DC boost and voltage regulation circuit; A bridge-type high-frequency inverter circuit, connected to the output of an overcurrent protection circuit, converts high-voltage DC into a high-frequency square wave. A DC blocking coupling circuit is connected to the output of a bridge high-frequency inverter circuit to filter out DC components. The electromagnetic conversion and eddy current generation power module is connected to the output of the DC blocking coupling circuit. Eddy current heating is generated on the ferromagnetic plate through a high-frequency coil and magnetic material. The heat dissipation system is thermally connected to the electromagnetic conversion and eddy current generation power module to dissipate heat to the external space. The DSP signal processing and control circuit is connected to the input current detection circuit, DC boost and voltage regulation circuit, overcurrent protection circuit, bridge high-frequency inverter circuit, and system power module to achieve closed-loop control. The display module, connected to the DSP signal processing and control circuit, is used to display system parameters; The communication and external control input circuit connects to the DSP signal processing and control circuit, receives external commands, and uploads status.

2. The system according to claim 1, characterized in that: The processor of the DSP signal processing and control circuit includes a DSP or a microcontroller; The display module uses at least one of OLED, LCD, or digital tube.

3. The system according to claim 1, characterized in that: The communication and external control input circuit supports at least one of the following communication methods: CAN communication, isolated digital I / O, RS485 or RS232. The system power supply module is implemented using a switching power supply or a traditional transformer transformation method.

4. The system according to claim 1, characterized in that: The filtering method of the supercapacitor DC input circuit includes thin film capacitors or electrolytic capacitors; its voltage detection method includes resistor series voltage division or isolated photoelectric / magnetoelectric detection.

5. The system according to claim 1, characterized in that: The current sampling method of the input current detection circuit includes series sampling resistors or isolated photoelectric / magnetic detection.

6. The system according to claim 1, characterized in that: The DC boost and regulation circuit adopts a non-isolated boost topology.

7. The system according to claim 1, characterized in that: The overcurrent protection circuit uses either a sampling resistor in series or an isolated photoelectric / magnetic detection method for current detection.

8. The system according to claim 1, characterized in that: The switching transistors of the bridge-type high-frequency inverter circuit include at least one of silicon carbide MOSFETs, ordinary MOSFETs, IGBTs, or high-voltage transistors.

9. The system according to claim 1, characterized in that: The DC blocking coupling circuit is implemented using at least one non-polarized capacitor, either a thin-film capacitor or a ceramic capacitor.

10. The system according to claim 1, characterized in that: The high-frequency coil of the electromagnetic conversion and eddy current generation power module is composed of at least one of multi-strand enameled wire, multi-strand cotton-covered wire, or insulating copper sheet. The magnetic material of the electromagnetic conversion and eddy current generation power module includes manganese-zinc ferrite or nickel-zinc ferrite.

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