CN211606138U - Single-section super capacitor management circuit and super capacitor bank management circuit - Google Patents
Single-section super capacitor management circuit and super capacitor bank management circuit Download PDFInfo
- Publication number
- CN211606138U CN211606138U CN201922468785.6U CN201922468785U CN211606138U CN 211606138 U CN211606138 U CN 211606138U CN 201922468785 U CN201922468785 U CN 201922468785U CN 211606138 U CN211606138 U CN 211606138U
- Authority
- CN
- China
- Prior art keywords
- circuit
- voltage
- super capacitor
- output
- resistor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Protection Of Static Devices (AREA)
Abstract
The utility model provides a single section super capacitor management circuit and super capacitor bank management circuit relates to protection management circuit technical field, has solved super capacitor overcharge and low efficiency of capacitor management circuit, stability low, the risk is high, the technical problem of extravagant cost. The single-section super capacitor management circuit comprises a circuit voltage, a super capacitor output circuit, a reference circuit, a voltage comparator and an output control circuit; the super capacitor output circuit, the reference circuit, the voltage comparator and the output control circuit are all connected with the circuit voltage; the non-inverting input end of the voltage comparator is connected with the super capacitor output circuit, the inverting input end of the voltage comparator is connected with the reference circuit, and the output end of the voltage comparator is connected with the output control circuit. The utility model discloses still include a super capacitor group management circuit, its characteristic has single section super capacitor management circuit and structure. The utility model provides a super capacitor overcharge's problem, still have stability height, security height, reliability height, high efficiency, low-cost characteristics.
Description
Technical Field
The utility model relates to a protection management circuit especially relates to a single section super capacitor management circuit and super capacitor group management circuit.
Background
Because the super capacitor has good stability, the pins are not easy to corrode, the service life is longer, and the super capacitor has the characteristics of convenience in maintenance, zero environmental pollution and the like, a plurality of products in the power industry begin to adopt super capacitor power storage energy as a backup power supply for power supply at present. The capacity of the conventional super capacitor can be very large, from several farads to hundreds of farads, even thousands of farads, but the voltage is in a low-voltage mode, and is usually 1V to 3.0V. If a large-capacity and high-voltage super capacitor bank is needed to meet the actual demand for power supply, a plurality of super capacitors need to be combined in a series-parallel connection mode. However, a common capacitor management circuit is to charge the series/parallel capacitor banks with input voltage (power) through a current limiting resistor, and to prevent overcharging between the capacitor banks by using equalizing resistors (R1-Rn), and the voltage of the unit capacitor is forced to be uniform by the equalizing resistors connected in parallel.
There are 3 problems with this:
1. the external equalizing resistor has power loss in the charging and discharging process, the larger the capacity of the capacitor bank is, the more serious the loss is, the more serious the heating is, and the effective power of the product is reduced.
2. If the charging time is long enough, the circuit can complete the equalizing process, but on the occasion that the requirement of large capacity and heavy load on the charging time is high, overvoltage is easily caused by charging with peak power, no protection effect is provided for the generated overvoltage, the risk that the single body is easily broken down exists, and the more the number of the single bodies is, the greater the risk is.
3. Has higher requirements on the precision and the temperature drift of the resistor.
Therefore, how to realize an efficient and safe super capacitor management circuit becomes important.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an one of them purpose is to provide a single section super capacitor management circuit and super capacitor group management circuit, has solved among the prior art for super capacitor overcharge and the technical problem of super capacitor management circuit inefficiency, stability low, the risk is high, the extravagant cost. The utility model discloses preferred technical scheme can reach a great deal of beneficial technological effect, specifically see the following explanation.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model discloses a single section super capacitor management circuit, which comprises a circuit voltage, a super capacitor output circuit, a reference circuit, a voltage comparator and an output control circuit;
the super capacitor output circuit, the reference circuit, the voltage comparator and the output control circuit are all connected with circuit voltage; the non-inverting input end of the voltage comparator is connected with the super capacitor output circuit, the inverting input end of the voltage comparator is connected with the reference circuit, and the output end of the voltage comparator is connected with the output control circuit;
the circuit voltage is used for charging the super capacitor and providing voltage for the circuit;
the super capacitor output circuit is used for outputting voltage by the super capacitor;
the reference circuit is used for outputting a reference voltage;
the voltage comparator is used for comparing the voltage output by the super capacitor output circuit with the voltage output by the reference circuit and outputting the voltage according to the comparison result;
the output control circuit is used for controlling the output voltage of the voltage comparator, and particularly discharging the excessive voltage under the condition of overvoltage, so that the charging and circuit functions of the super capacitor are protected.
Further, for realizing better the utility model discloses, adopt the following structure that sets up very much: the super capacitor output circuit comprises a super capacitor, a first resistor, a second resistor and a super capacitor output circuit output end;
one end of the super capacitor is connected with the circuit voltage and one end of the first resistor, and the other end of the super capacitor is grounded; one end of the second resistor is connected with the other end of the first resistor and the output end of the super capacitor output circuit, and the other end of the second resistor is grounded; and the output end of the super capacitor output circuit is connected with the non-inverting input end of the voltage comparator.
Further, for realizing better the utility model discloses, adopt the following structure that sets up very much: the reference circuit comprises a third resistor, a voltage stabilizing diode, a capacitor and a reference circuit output end;
one end of the third resistor is connected with the circuit voltage, and the other end of the third resistor is connected with the output end of the reference circuit, the cathode of the voltage stabilizing diode and one end of the capacitor; the anode of the voltage stabilizing diode and the other end of the capacitor are both grounded; the output end of the reference circuit is connected with the inverting input end of the voltage comparator.
Further, for realizing better the utility model discloses, adopt the following structure that sets up very much: the output control circuit comprises a fourth resistor, a fifth resistor, a load resistor and an N-channel MOS tube;
the output end of the voltage comparator is connected with one end of the fourth resistor and one end of the fifth resistor; the other end of the fourth resistor is connected with circuit voltage; the grid electrode of the N-channel MOS tube is connected with the other end of the fifth resistor, the drain electrode of the N-channel MOS tube is connected with the circuit voltage, and the source electrode of the N-channel MOS tube is connected with one end of the load resistor; the other end of the load resistor is grounded.
Further, for realizing better the utility model discloses, adopt the following structure that sets up very much: the load resistor is formed by connecting at least two resistors in parallel.
Further, for realizing better the utility model discloses, adopt the following structure that sets up very much: and a power supply end of the voltage comparator is connected with the circuit voltage, and a grounding end of the voltage comparator is grounded.
Further, for realizing better the utility model discloses, adopt the following structure that sets up very much: the device further comprises an external load, one end of the external load is connected with one end of the super capacitor, and the other end of the external load is connected with the other end of the super capacitor.
The utility model discloses still include a super capacitor group management circuit, its characteristic has aforementioned single section super capacitor management circuit and structure.
Further, for realizing better the utility model discloses, adopt the following structure that sets up very much: the single-section super capacitor management circuit comprises at least two single-section super capacitor management circuits.
Further, for realizing better the utility model discloses, adopt the following structure that sets up very much: at least two single super capacitor management circuits are connected through a series super capacitor and/or a parallel super capacitor.
The utility model provides a single section super capacitor management circuit and super capacitor group management circuit have following beneficial technological effect at least:
the single-section super capacitor management circuit consists of a circuit voltage, a super capacitor output circuit, a reference circuit, a voltage comparator and an output control circuit. The voltage comparator compares the voltage output by the super capacitor output circuit with the reference voltage output by the reference circuit at any time in the circuit, judges whether the super capacitor has an overcharge phenomenon according to a comparison result, and further plays a role in protecting the super capacitor and the circuit by outputting the voltage in the control circuit to cause the excessive voltage. The reference circuit adopts a voltage stabilizing diode, so that high-efficiency voltage stabilizing effect can be achieved; and a capacitor is also used for filtering unstable ripples of the generated reference voltage, so that the high-precision reference voltage is finally realized, and the function of accurate comparison value is realized relative to the voltage output by the super capacitor output circuit.
The invention also provides a super capacitor bank management circuit, which comprises a structure of a single super capacitor management circuit and at least two single super capacitor management circuits, wherein the at least two single super capacitor management circuits are connected through a series super capacitor and/or a parallel super capacitor. The super capacitor bank management circuit can meet the requirements of safety, reliability and stability of the circuit; meanwhile, the device has the characteristics of simple structure, practical operation and low cost.
The invention greatly reduces the management cost of the super capacitor bank, realizes the charging, energy storage and charging of the high-capacity super capacitor, and has the functions of preventing the overcharge problem of the super capacitor and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a circuit schematic of a single section of a super capacitor management circuit;
fig. 2 is a circuit schematic of a supercapacitor bank management circuit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, the present invention relates to a single super capacitor management circuit, which is composed of a circuit voltage, a super capacitor output circuit, a reference circuit, a voltage comparator and an output control circuit;
the super capacitor output circuit, the reference circuit, the voltage comparator and the output control circuit are all connected with circuit voltage; the non-inverting input end of the voltage comparator is connected with the super capacitor output circuit, the inverting input end of the voltage comparator is connected with the reference circuit, and the output end of the voltage comparator is connected with the output control circuit;
the circuit voltage is used for charging the super capacitor and providing voltage for the circuit;
the super capacitor output circuit is used for outputting voltage by the super capacitor;
the reference circuit is used for outputting a reference voltage which is used as the output voltage of the super capacitor;
the voltage comparator is used for comparing the voltage output by the super capacitor output circuit with the voltage output by the reference circuit and outputting the voltage according to the comparison result;
the output control circuit is used for controlling the output voltage of the voltage comparator, and particularly discharging the excessive voltage under the condition of overvoltage, so that the charging and circuit functions of the super capacitor are protected.
The utility model discloses a voltage comparator lasts the reference voltage of comparing super capacitor output circuit output and reference circuit output and judges super capacitor's the condition of charging, according to judged result, voltage comparator output voltage, rethread output control circuit control voltage comparator's output voltage plays the effect that protection super capacitor charges safely, also does the utility model provides a safety guarantee. The utility model has the characteristics of high reliability, high stability and high safety; meanwhile, the device has the characteristics of simple structure, practical operation and low cost.
The super capacitor output circuit comprises a super capacitor, a first resistor, a second resistor and a super capacitor output circuit output end;
one end of the super capacitor is connected with the circuit voltage and one end of the first resistor, and the other end of the super capacitor is grounded; one end of the second resistor is connected with the other end of the first resistor and the output end of the super capacitor output circuit, and the other end of the second resistor is grounded; and the output end of the super capacitor output circuit is connected with the non-inverting input end of the voltage comparator.
The reference circuit comprises a third resistor, a voltage stabilizing diode, a capacitor and a reference circuit output end;
one end of the third resistor is connected with the circuit voltage, and the other end of the third resistor is connected with the output end of the reference circuit, the cathode of the voltage stabilizing diode and one end of the capacitor; the anode of the voltage stabilizing diode and the other end of the capacitor are both grounded; the output end of the reference circuit is connected with the inverting input end of the voltage comparator.
The voltage stabilizing diode has the functions of: first, it is used as a regulator or a voltage reference element; secondly, the voltage stabilizing diodes can be connected in series so as to be used at higher voltage, and higher stable voltage can be obtained through the series connection; the zener diode can then protect the electronic components in the circuit from high current breakdown.
The capacitor is a filter capacitor and is used for filtering redundant waves generated in the reference voltage output by the reference circuit and avoiding misoperation of the reference voltage output by the reference circuit. The filter capacitor has the characteristics of low temperature, low loss, high safety and convenience.
Therefore, the reference circuit obtains a high-precision reference voltage through the third resistor, the zener diode and the filter capacitor. The reference voltage precision is greater than 0.5 level.
The output control circuit comprises a fourth resistor, a fifth resistor, a load resistor and an N-channel MOS tube;
the output end of the voltage comparator is connected with one end of the fourth resistor and one end of the fifth resistor; the other end of the fourth resistor is connected with circuit voltage; the grid electrode of the N-channel MOS tube is connected with the other end of the fifth resistor, the drain electrode of the N-channel MOS tube is connected with the circuit voltage, and the source electrode of the N-channel MOS tube is connected with one end of the load resistor; the other end of the load resistor is grounded. The load resistor is formed by connecting at least two resistors in parallel.
The output control circuit enables the excessive voltage to be discharged to the load resistor through the N-channel type MOS tube by opening or closing the N-channel type MOS tube, and the phenomenon of super capacitor overcharge is prevented. In addition, the power of the N-channel MOS tube and the load resistor can be changed to adapt to the requirement of practical application on the magnitude of the leakage current and voltage.
And a power supply end of the voltage comparator is connected with the circuit voltage, and a grounding end of the voltage comparator is grounded.
The single-section super capacitor management circuit can be connected with an external load, one end of the external load is connected with one end of the super capacitor, and the other end of the external load is connected with the other end of the super capacitor.
The principle of the single-section super capacitor management circuit is as follows:
the utility model continuously compares the voltage output by the super capacitor output circuit with the reference voltage output by the reference circuit, if the voltage output by the super capacitor output circuit is less than the preset reference voltage output by the reference circuit, the N channel type MOS tube in the single super capacitor management circuit is in a closed state, and the power supply continues to charge the super capacitor; if the voltage output by the super capacitor output circuit is greater than the preset reference voltage output by the reference circuit, the N-channel MOS tube is opened to prevent the super capacitor from being overcharged, so that the capacitor is damaged, and the details are as follows:
VDD is the voltage of the super capacitor C5 during charging, and the value should not be larger than the limit voltage of the capacitor theoretically. The VDD voltage is divided by the resistor R1 and the resistor R2 to obtain a divided voltage value, which is called Vin, and is applied to the non-inverting input terminal of the voltage comparator. Meanwhile, VDD obtains high-precision reference voltage through a resistor R3 and a voltage stabilizing diode D1, the high-precision reference voltage is added to the inverting input end of the voltage comparator, C1 is a filter capacitor of the reference voltage, and redundant voltage ripples are filtered out. When the voltage of the in-phase input end is greater than the reference voltage of the reverse-phase input end, the voltage comparator outputs high voltage, an N-channel type MOS tube Q1 in the output control circuit is driven to be in an open state through high level, VDD discharges to a load resistor (R6-Rn) through the N-channel type MOS tube Q1 so as to achieve the purpose of protecting the super capacitor, and the discharge power of the load resistor (R6-Rn) can be adjusted to the N-channel type MOS tube Q1 and the load resistor (R6-Rn) according to actual requirements; when the voltage of the non-inverting input end is smaller than the reference voltage of the inverting input end, the N-channel MOS tube Q1 is in a closed state, and VDD continuously charges the super capacitor.
Referring to fig. 2, the present invention further includes a super capacitor bank management circuit, which is characterized by having the single super capacitor management circuit and the structure thereof. The super capacitor bank management circuit comprises at least two single super capacitor management circuits. The at least two single super capacitor management circuits are connected through a series super capacitor and/or a parallel super capacitor.
Through effective management design of the single super-capacitor management circuit, the single super-capacitor management circuit can obtain a high-capacity and high-voltage capacitor group through a super-capacitor connection mode of connecting the single super-capacitor management circuit in series and/or a super-capacitor connection mode of connecting the single super-capacitor management circuit in parallel. The design method meets various design requirements, and simultaneously avoids 3 problems of common capacitor management circuits.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A single-section super capacitor management circuit is characterized by comprising a circuit voltage, a super capacitor output circuit, a reference circuit, a voltage comparator and an output control circuit;
the super capacitor output circuit, the reference circuit, the voltage comparator and the output control circuit are all connected with circuit voltage; the non-inverting input end of the voltage comparator is connected with the super capacitor output circuit, the inverting input end of the voltage comparator is connected with the reference circuit, and the output end of the voltage comparator is connected with the output control circuit;
the circuit voltage is used for charging the super capacitor and providing voltage for the circuit;
the super capacitor output circuit is used for outputting voltage by the super capacitor;
the reference circuit is used for outputting a reference voltage;
the voltage comparator is used for comparing the voltage output by the super capacitor output circuit with the voltage output by the reference circuit and outputting the voltage according to the comparison result;
the output control circuit is used for controlling the output voltage of the voltage comparator, and particularly discharging the excessive voltage under the condition of overvoltage, so that the charging and circuit functions of the super capacitor are protected.
2. The single section supercapacitor management circuit according to claim 1, wherein the supercapacitor output circuit comprises a supercapacitor, a first resistor, a second resistor, and a supercapacitor output circuit output;
one end of the super capacitor is connected with the circuit voltage and one end of the first resistor, and the other end of the super capacitor is grounded; one end of the second resistor is connected with the other end of the first resistor and the output end of the super capacitor output circuit, and the other end of the second resistor is grounded; and the output end of the super capacitor output circuit is connected with the non-inverting input end of the voltage comparator.
3. The single-section supercapacitor management circuit according to claim 1, wherein the reference circuit comprises a third resistor, a zener diode, a capacitor and a reference circuit output;
one end of the third resistor is connected with the circuit voltage, and the other end of the third resistor is connected with the output end of the reference circuit, the cathode of the voltage stabilizing diode and one end of the capacitor; the anode of the voltage stabilizing diode and the other end of the capacitor are both grounded; the output end of the reference circuit is connected with the inverting input end of the voltage comparator.
4. The single-section super-capacitor management circuit according to claim 1, wherein the output control circuit comprises a fourth resistor, a fifth resistor, a load resistor, and an N-channel MOS transistor;
the output end of the voltage comparator is connected with one end of the fourth resistor and one end of the fifth resistor; the other end of the fourth resistor is connected with circuit voltage; the grid electrode of the N-channel MOS tube is connected with the other end of the fifth resistor, the drain electrode of the N-channel MOS tube is connected with the circuit voltage, and the source electrode of the N-channel MOS tube is connected with one end of the load resistor; the other end of the load resistor is grounded.
5. The single-section supercapacitor management circuit according to claim 4, wherein the load resistor is composed of at least two resistors connected in parallel.
6. The single-section supercapacitor management circuit according to claim 1, wherein the voltage comparator has a power terminal connected to a circuit voltage and a ground terminal connected to ground.
7. The single super capacitor management circuit according to claim 2, further comprising an external load, wherein one end of the external load is connected to one end of the super capacitor, and the other end of the external load is connected to the other end of the super capacitor.
8. An ultracapacitor bank management circuit comprising the single-stage ultracapacitor management circuit of any one of claims 1 to 7.
9. The supercapacitor bank management circuit according to claim 8, comprising at least two of the individual supercapacitor management circuits.
10. The supercapacitor pack management circuit according to claim 9, wherein at least two individual supercapacitor management circuits are connected by a series supercapacitor and/or a parallel supercapacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922468785.6U CN211606138U (en) | 2019-12-31 | 2019-12-31 | Single-section super capacitor management circuit and super capacitor bank management circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922468785.6U CN211606138U (en) | 2019-12-31 | 2019-12-31 | Single-section super capacitor management circuit and super capacitor bank management circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211606138U true CN211606138U (en) | 2020-09-29 |
Family
ID=72598777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922468785.6U Active CN211606138U (en) | 2019-12-31 | 2019-12-31 | Single-section super capacitor management circuit and super capacitor bank management circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211606138U (en) |
-
2019
- 2019-12-31 CN CN201922468785.6U patent/CN211606138U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7898223B2 (en) | Electric power storage system using capacitors and control method thereof including serial-parallel switching means for each circuit block of batteries based on descending order of block voltages | |
| CN112467811B (en) | Double-battery voltage balancing method and double-battery voltage balancing circuit | |
| CN105006860A (en) | Controllable charge and discharge apparatus and voltage-equalizing circuit of a supercapacitor based on apparatus | |
| CN211606138U (en) | Single-section super capacitor management circuit and super capacitor bank management circuit | |
| WO2024148806A1 (en) | Direct-current power supply system having fixed output voltage | |
| CN101982921A (en) | Universal high-voltage capacitor energy storage module | |
| CN104247195A (en) | A battery energy storage, battery energy storage system, method, computer program and computer program product | |
| CN219164234U (en) | Direct current power supply system with fixed output voltage | |
| US20240088645A1 (en) | Circuit Arrangement, Electrical Energy Store Having a Circuit Arrangement of this Type, and Use of Said Circuit Arranagement as an Energy Store | |
| CN204794241U (en) | Controllable discharge device that fills reaches equalizer circuit based on super capacitor of this device | |
| CN218161803U (en) | Starting impact current suppression circuit of power supply | |
| CN214799289U (en) | Power-off discharge circuit of power supply | |
| CN110797877B (en) | High-voltage generator bus voltage control method and high-voltage generator | |
| Kurm et al. | A multi input converter for interfacing battery and supercapacitor to the load | |
| CN212210579U (en) | Farad capacitor battery for power distribution terminal | |
| CN221202205U (en) | Charging and discharging circuit of Farad capacitor | |
| CN111431262A (en) | Solar supplementary power supply system based on primary battery and composite capacitor | |
| CN212572115U (en) | Multi-section efficient super capacitor charging and discharging management circuit suitable for TTU | |
| CN104022553A (en) | Charging circuit of super-capacitor | |
| CN218124363U (en) | Charging and discharging circuit, energy router and consumer | |
| CN105244934A (en) | Backup battery charging circuit | |
| CN219476327U (en) | Standby electric capacitance isolation device, stand by electric device and solid state disk | |
| CN108711922A (en) | A kind of solar energy system power down protection module | |
| CN220043048U (en) | Low-voltage power-down maintaining circuit | |
| CN219739989U (en) | Constant-current constant-voltage charging circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 3rd Floor, Building 6, Guangqian Industrial Zone, Longzhu 3rd Road, Longzhu 3rd Road, Longguang Community, Taoyuan Street, Nanshan District, Shenzhen, Guangdong Province, 518000 Patentee after: SHENZHEN FRIENDCOM TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 518000 6th floor, building 17, Guangqian Industrial Zone, Taoyuan Street, Nanshan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN FRIENDCOM TECHNOLOGY DEVELOPMENT Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder |