CN212063495U - Constant voltage source power supply device based on super capacitor - Google Patents
Constant voltage source power supply device based on super capacitor Download PDFInfo
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- CN212063495U CN212063495U CN202021081567.3U CN202021081567U CN212063495U CN 212063495 U CN212063495 U CN 212063495U CN 202021081567 U CN202021081567 U CN 202021081567U CN 212063495 U CN212063495 U CN 212063495U
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Abstract
The utility model provides a constant voltage source power supply unit based on ultracapacitor system, including ultracapacitor system, load, detection circuitry, first connecting circuit, second connecting circuit, third connecting circuit, and controller, detection circuitry links to each other with ultracapacitor system, detection circuitry links to each other with the load, first connecting circuit, second connecting circuit and third connecting circuit parallel connection are between ultracapacitor system and load, be provided with continuous first controllable switch and step-down switch circuit on the first connecting circuit, be provided with the controllable switch of second on the second connecting circuit, be provided with continuous third controllable switch and step-up switch circuit on the third connecting circuit, detection circuitry, first controllable switch, the controllable switch of second, and the controllable switch of third all links to each other with the controller. According to the method and the device, whether the output voltage of the super capacitor is reduced or increased can be selected according to the terminal voltage of the super capacitor, so that power is stably supplied to the load, and the load is guaranteed to work reliably.
Description
Technical Field
The utility model relates to an intelligent control technical field in the new forms of energy field especially relates to a constant voltage source power supply unit based on ultracapacitor system.
Background
Supercapacitors, also known as electrochemical capacitors, have properties intermediate between those of chemical batteries and conventional capacitors, while having some of the characteristics of both. The energy storage mechanism of the super capacitor can be divided into four types: electric double layer supercapacitors (EDLCs for short); faraday capacitor (also called pseudocapacitor); hybrid capacitors (hybrid capacitors) and Lithium-ion capacitors (Lithium-ion capacitors).
The super capacitor generally comprises electrodes, a diaphragm, positive and negative electrode materials, electrolyte and an aluminum-plastic packaging film. The diaphragm is positioned between the two electrodes and is soaked in the electrolyte, so that the diaphragm plays roles in stopping electron conduction between the two electrodes and preventing internal short circuit, and simultaneously can enable ions in the electrolyte to freely pass through as much as possible; the anode and the cathode are composed of electrode materials and current collectors, and the common electrode materials comprise carbon-based electrode materials, transition metal oxides, hydroxides, sulfides and conductive polymers; the electrolyte determines the potential window of the super capacitor to a great extent, thereby influencing the energy density of the super capacitor and being an important component of the super capacitor.
The different structures, electrode materials and electrolytes, production processes, etc. determine their external properties. In comparison, each of these four supercapacitors is somewhat long. The charge and discharge process of the double electric layer super capacitor is a pure physical adsorption process, so the charge and discharge speed is fastest, namely the power density is high and the service life is long; the energy density of the faraday capacitance is large.
The research on supercapacitors originated in the last 60's of the century and gradually moved to the market in the 80's. The development of supercapacitors has continued to grow new since the first patent of supercapacitors, filed in 1957. Before 2000, supercapacitors were developed with emphasis on symmetrical electric double layer capacitors, and after 2000, research on supercapacitors has focused on new energy storage mechanisms and device designs, with the goal of developing supercapacitors with high voltage and high energy density.
The capacity of a single body of the super capacitor developed ten years ago is less than 1000F, and the energy density (10-20 Wh/kg) is far lower than that of a conventional storage battery (100-150 Wh/kg), which is also a bottleneck that the super capacitor is difficult to be widely applied in practice. Five years ago, the monomer capacity of the super capacitor can reach over ten thousand farad levels, the energy density and the power density are continuously improved, the latest research reports show that a new breakthrough is made in the aspects of electrode materials and working mechanisms, and laboratories have developed a novel super capacitor with higher energy density and longer service life, wherein the energy density of the electrode materials reaches 257 Wh/Kg, the maximum power density exceeds 30 kW/Kg, and after the charge and discharge cycle is 15000 times, the capacity retention rate reaches 79.2%. The energy density of the super capacitor is about 10 times that of the conventional super capacitor, the cost of the super capacitor is about one tenth of that of the conventional super capacitor, and the super capacitor has great technical advantages and application prospects in the aspects of application of a power energy storage system for a vehicle and an energy storage system for a power grid.
Although still in the research stage at present, the system can certainly enter the market in the near future and enter wider application fields, such as military, hybrid power systems, wind-solar-electric energy storage systems and the like, and gradually become the main device for storing energy to be widely applied. At present, research on the super capacitor mainly focuses on the electrode material and the preparation process of the super capacitor, the focus of the research is the performance index of the super capacitor, and few researches on the safe use of the super capacitor are carried out. The super capacitor is used as the energy source of the electric device, the safe operation of the super capacitor directly determines the performance of the electric device, and on the other hand, the cost of the super capacitor and the components of the super capacitor is high. Therefore, when the research on the electrode material and the preparation process of the super capacitor is deepened and the results are increased, the research on the safety technology necessary for the wide application of the super capacitor has important practical significance for perfecting a technical system, fully playing the role of the super capacitor and promoting the development of the economic society.
The terminal voltage of the super capacitor is in direct proportion to the amount of the stored electricity, and when the super capacitor is used as a power supply to supply power to a load, the terminal voltage of the super capacitor is reduced along with the discharging. There are three cases in actual use: firstly, the terminal voltage exceeds the upper limit of the rated voltage of the load, secondly, the requirement of the load on the power supply is met, and thirdly, the terminal voltage is reduced along with the lapse of the working time in the working process and even is lower than the lower limit voltage of the power supply required by the normal work of the load. Therefore, when the super capacitor is used as a power source to supply power to a load, the instability of the output voltage of the super capacitor may cause the load to work unreliably.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned prior art's defect and various weak points, the to-be-solved technical problem of the utility model is to provide a constant voltage source power supply unit based on ultracapacitor system, can supply power for the load steadily.
In order to achieve the above object, the utility model provides a constant voltage source power supply unit based on ultracapacitor system, including ultracapacitor system, load, detection circuitry, first connecting circuit, second connecting circuit, third connecting circuit and controller, detection circuitry links to each other with ultracapacitor system, is used for detecting ultracapacitor system's terminal voltage, detection circuitry links to each other with the load, is used for actual measurement output voltage, first connecting circuit, second connecting circuit and third connecting circuit parallel connection are between ultracapacitor system and load, be provided with the first controllable switch and the step-down switch circuit that link to each other on the first connecting circuit, be provided with the second controllable switch on the second connecting circuit, be provided with the third controllable switch and the boost switch circuit that link to each other on the third connecting circuit, detection circuitry, first controllable switch, second controllable switch, And the third controllable switch is connected with the controller, and the controller is pre-stored with load standard voltage.
Further, the controller is connected with the super capacitor.
Further, the device also comprises a standby battery, and the standby battery is connected with the controller.
Further, still include the alarm, the alarm links to each other with the controller.
Preferably, the alarm is an audible and visual alarm.
The utility model relates to a constant voltage source power supply unit based on ultracapacitor system has following beneficial effect:
according to the method and the device, whether the output voltage of the super capacitor is reduced or increased can be selected according to the terminal voltage of the super capacitor, so that power is stably supplied to the load, and the load is guaranteed to work reliably.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description of the present invention is made with reference to the accompanying drawings and preferred embodiments of the present invention.
Drawings
Fig. 1 is a schematic structural diagram of a supercapacitor-based constant voltage power supply device according to the present application.
Description of the element reference numerals
| 1 | |
| 2 | Load(s) |
| 3 | |
| 4 | First |
| 5 | Step-down switching circuit |
| 6 | Second |
| 7 | Third |
| 8 | |
| 9 | Controller |
Detailed Description
The following detailed description of preferred embodiments of the invention refers to the accompanying drawings.
The utility model provides a constant voltage source power supply unit based on ultracapacitor system for link to each other with electric load 2, convert ultracapacitor system 1's output voltage into the constant voltage source and export for electric load 2, guarantee with electric load 2 in ultracapacitor system 1's during operation safe operation.
As shown in fig. 1, the utility model relates to a constant voltage source power supply unit includes ultracapacitor system 1, load 2, detection circuitry 3, first connecting circuit, second connecting circuit, third connecting circuit and controller 9, detection circuitry 3 links to each other with ultracapacitor system 1, is used for detecting ultracapacitor system 1's terminal voltage, detection circuitry 3 links to each other with load 2, is used for actually measuring output voltage, first connecting circuit, second connecting circuit and third connecting circuit parallel connection are between ultracapacitor system 1 and load 2, be provided with the first controllable switch 4 and the step-down switch circuit 5 that link to each other on the first connecting circuit, be provided with second controllable switch 6 on the second connecting circuit, be provided with the third controllable switch 7 and the step-up switch circuit 8 that link to each other on the third connecting circuit, detection circuitry 3, first controllable switch 4, step-down switch circuit 5, The second controllable switch 6 and the third controllable switch 7 are both connected to the controller 9, a load standard voltage is prestored in the controller 9, the load standard voltage is also a normal working voltage of the load 2 and is a range, and two ends of the load standard voltage are respectively an upper limit of an allowable voltage and a lower limit of the allowable voltage.
The working principle of the constant voltage source power supply device is as follows: the first controllable switch 4, the second controllable switch 6 and the third controllable switch 7 are all contactless switches and are controlled by the controller 9, the controller 9 can realize the on-off of the first connecting circuit, the second connecting circuit and the third connecting circuit by controlling the on-off of the first controllable switch 4, the second controllable switch 6 and the third controllable switch 7, so that the super capacitor 1 can provide power for the load 2 through the first connecting circuit, the second connecting circuit or the third connecting circuit, the first connecting circuit is a voltage reduction connecting circuit, the second connecting circuit is a normal connecting circuit, and the third connecting circuit is a voltage boosting connecting circuit.
The specific control mode is as follows: the detection circuit 3 detects the terminal voltage of the super capacitor 1 and sends the terminal voltage of the super capacitor 1 to the controller 9; when the controller 9 judges that the terminal voltage of the super capacitor 1 is greater than the upper limit of the allowed voltage of the load standard voltage, the controller 9 controls the first controllable switch 4 to be closed, and the second controllable switch 6 and the third controllable switch 7 to be opened, so that the super capacitor 1 is connected with the load 2 through the first connecting circuit, and supplies power to the load 2 after being subjected to voltage reduction conversion through the voltage reduction switch circuit 5 on the first connecting circuit, and the super capacitor 1 is in a voltage reduction power supply state. When the controller 9 judges that the terminal voltage of the super capacitor 1 is equal to the load standard voltage, the controller 9 controls the second controllable switch 6 to be closed, and the first controllable switch 4 and the third controllable switch 7 to be opened, so that the super capacitor 1 is connected with the load 2 through the second connecting circuit, the terminal voltage of the super capacitor 1 is not subjected to voltage reduction or voltage boosting conversion, and the super capacitor 1 is in a state of directly supplying power to the load 2. When the controller 9 judges that the terminal voltage of the super capacitor 1 is smaller than the lower limit of the allowed voltage of the load standard voltage, the controller 9 controls the third controllable switch 7 to be closed, the first controllable switch 4 and the second controllable switch 6 to be opened, then the super capacitor 1 is connected with the load 2 through the third connecting circuit, and supplies power to the load 2 after being subjected to boost conversion through the boost switch circuit 8 on the third connecting circuit, and the super capacitor 1 is in a boost power supply state. Therefore, whether the output voltage of the super capacitor 1 is reduced or increased can be selected according to the terminal voltage of the super capacitor 1, and the super capacitor 1 is converted into a voltage stabilizing source meeting the requirement of the load 2, so that power is stably supplied to the load 2, and the load 2 is ensured to work reliably; in addition, the super capacitor 1 has an overcurrent protection function as a voltage stabilization source.
Further, as shown in fig. 1, the controller 9 is connected to the super capacitor 1, and the super capacitor 1 provides power for the controller 9 as a main power supply of the controller 9. Additionally, the utility model relates to a constant voltage source power supply unit still includes backup battery, backup battery links to each other with controller 9, and backup battery also can provide the power for controller 9, and as the short-time power when control circuit starts, controller 9 also can be according to ultracapacitor system 1 or backup battery as the working power supply of self of the voltage selection of ultracapacitor system 1 and load 2.
Further, as shown in fig. 1, the constant voltage power supply device according to the present invention further includes an alarm, and the alarm is connected to the controller 9. When the terminal voltage of ultracapacitor system 1 that controller 9 feedbacks according to detection circuitry 3 judges ultracapacitor system 1 energy not enough, 9 control alarms of controller report to the police, impel the ultracapacitor system 1 that the user changed the new, make the utility model discloses automatic alarm's function when having ultracapacitor system 1 and can not normally supplying power. Preferably, the alarm is an audible and visual alarm.
Further, the number of the super capacitors 1 may be one or more; when the number of the super capacitors 1 is plural, a super capacitor bank is constituted. The buck switch circuit 5 and the boost switch circuit 8 both have a voltage stabilizing function, so the buck switch circuit 5 is preferably a buck switch voltage stabilizing circuit, and the boost switch circuit 8 is preferably a boost switch voltage stabilizing circuit.
To sum up, the utility model discloses effectively overcome all sorts of shortcomings among the prior art and have high industry value, realize promoting the new technological development of super capacitor and the popularization of achievement to super capacitor's safe application.
It is right above the embodiment of the utility model provides a constant voltage source power supply unit based on ultracapacitor system has carried out detailed introduction, to the general technical personnel in this field, the foundation the utility model discloses the thought of embodiment all has the change part on concrete implementation mode and application scope, to sum up, this description content should not be understood as right the utility model discloses a restriction, the all cases according to the utility model relates to any change that the thought was done is all within the protection scope.
Claims (5)
1. A constant voltage power supply device based on a super capacitor comprises the super capacitor (1) and a load (2), and is characterized in that: still include detection circuitry (3), first connecting circuit, second connecting circuit, third connecting circuit and controller (9), detection circuitry (3) link to each other with ultracapacitor system (1), be used for detecting the terminal voltage of ultracapacitor system (1), detection circuitry (3) link to each other with load (2), be used for actual measurement output voltage, first connecting circuit, second connecting circuit and third connecting circuit parallel connection are between ultracapacitor system (1) and load (2), be provided with connected first controllable switch (4) and step-down switch circuit (5) on the first connecting circuit, be provided with second controllable switch (6) on the second connecting circuit, be provided with continuous third controllable switch (7) and step-up switch circuit (8) on the third connecting circuit, detection circuitry (3), first controllable switch (4), The second controllable switch (6) and the third controllable switch (7) are connected with a controller (9), and a load standard voltage is prestored in the controller (9).
2. A constant voltage power supply apparatus according to claim 1, wherein: the controller (9) is connected with the super capacitor (1).
3. A constant voltage power supply apparatus according to claim 1 or 2, wherein: the system also comprises a standby battery, and the standby battery is connected with the controller (9).
4. A constant voltage power supply apparatus according to claim 1, wherein: the alarm is connected with the controller (9).
5. A constant voltage power supply according to claim 4, wherein: the alarm is an audible and visual alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021081567.3U CN212063495U (en) | 2020-06-12 | 2020-06-12 | Constant voltage source power supply device based on super capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021081567.3U CN212063495U (en) | 2020-06-12 | 2020-06-12 | Constant voltage source power supply device based on super capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212063495U true CN212063495U (en) | 2020-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021081567.3U Expired - Fee Related CN212063495U (en) | 2020-06-12 | 2020-06-12 | Constant voltage source power supply device based on super capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212063495U (en) |
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2020
- 2020-06-12 CN CN202021081567.3U patent/CN212063495U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201201 Termination date: 20210612 |
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| CF01 | Termination of patent right due to non-payment of annual fee |