CN108429328B - Automobile electronic voltage stabilizer based on super capacitor - Google Patents
Automobile electronic voltage stabilizer based on super capacitor Download PDFInfo
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- CN108429328B CN108429328B CN201810059058.1A CN201810059058A CN108429328B CN 108429328 B CN108429328 B CN 108429328B CN 201810059058 A CN201810059058 A CN 201810059058A CN 108429328 B CN108429328 B CN 108429328B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
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Abstract
The invention provides an automotive electronic voltage stabilizer based on a super capacitor, which comprises a super capacitor bank module, a first protection module, a second protection module, a power supply module and a control module, wherein the super capacitor bank module comprises a first protection module, a second protection module, a first protection module and a second protection module; the super capacitor bank module consists of a super capacitor bank formed by sequentially connecting 6 super capacitors in series and 6 balance and overvoltage alarm circuits which are matched; the positive electrode of the super capacitor bank module is connected with the first protection module, the second protection module and the control module; the first protection module and the second protection module are connected with the control module; when in use, the second protection module is connected with the anode of the storage battery; and the cathode of the super capacitor bank module is connected with the cathode of the storage battery. When the automobile storage battery is used, the problems of unstable voltage in the use process of an automobile and difficulty in starting the automobile when the automobile storage battery is in power failure can be effectively solved, and the service life of the automobile storage battery can be effectively prolonged.
Description
Technical Field
The invention relates to an automotive electronic voltage stabilizer, in particular to an automotive electronic voltage stabilizer based on a super capacitor.
Background
At present, the automobile generally uses a storage battery as a starting power supply, the automobile storage battery has large voltage fluctuation during starting, electronic equipment in the automobile can be influenced, the operation is unstable, the starting is slow, and the automobile can not be started frequently when the automobile is not used for a long time or the storage battery is insufficient. The generator generates electricity for the whole vehicle electrical appliance in the running process of the vehicle. The voltage generated by the generator is related to the rotating speed and fluctuates continuously, and at the moment, the storage battery is used as an ultra-large capacitor for stabilizing the voltage generated by the generator. However, because the internal resistance of the storage battery is large, the voltage is constantly changed along with the rotating speed of the engine, the voltage stabilizing effect is general, and particularly, the voltage of a power supply reaches 1.5-2V at the moment of opening an air conditioner, lifting a window and turning on a headlamp in the running process of an automobile, and the influence on the performance of electric appliances of the whole automobile is great.
Disclosure of Invention
The purpose of the invention is: to the problem that exists among the prior art, provide an automotive electronics stabiliser based on ultracapacitor system, it can effectively solve present car operation in-process voltage unstability problem, the difficult start-up problem of car battery insufficient voltage when using to can prolong the life of car battery.
The technical scheme of the invention is as follows: the automotive electronic voltage stabilizer based on the super capacitor has a positive terminal and a negative terminal, and is structurally characterized in that: the automotive electronic voltage stabilizer comprises a super capacitor bank module, a first protection module, a second protection module, a power supply module and a control module;
the super capacitor bank module is provided with a positive end, a negative end and an overvoltage signal output end; the first protection module is provided with a first power supply end, a second power supply end and a control signal input end; the second protection module is provided with first to third power supply ends and a control signal input end; the power supply module is provided with a power supply input end, a power supply output end anode and a power supply output end cathode; the control module is provided with an overvoltage alarm signal input end, a first control output end, a second control output end, a power supply positive end, a power supply negative end and a voltage detection signal input end;
the power input end of the power supply module and the first power end of the second protection module form a common joint because of collineation, and the common joint is the positive terminal of the automotive electronic voltage stabilizer; the negative electrode of the power output end of the power module, the negative electrode end of the power of the control module, the second power end of the first protection module, the third power end of the second protection module and the negative electrode end of the super capacitor bank module form a common contact because of collinearity, and the common contact is the negative electrode wiring end of the automotive electronic voltage stabilizer;
the positive end of the super capacitor bank module, the first power supply end of the first protection module, the second power supply end of the second protection module and the voltage detection signal input end of the control module are collinear; the control signal input end of the first protection module is electrically connected with the first control output end of the control module; the control signal input end of the second protection module is electrically connected with the second control output end of the control module; the overvoltage alarm signal input end of the control module is electrically connected with the overvoltage signal output end of the super capacitor bank module; the positive end of the power supply of the control module is electrically connected with the positive end of the power supply output end of the power supply module;
when the automobile electronic voltage stabilizer is used, the positive terminal and the negative terminal of the automobile electronic voltage stabilizer are correspondingly and electrically connected with the positive terminal and the negative terminal of a storage battery on an automobile.
The further scheme is as follows: the super capacitor bank module consists of a super capacitor bank formed by sequentially connecting 6 super capacitors C5-C10 in series and 6 balancing and overvoltage alarm circuits No. 1-6; the circuit structures of the 6 balancing and overvoltage alarming circuits are the same, and each super capacitor is provided with 1 super capacitor; the No. 1-6 equalizing and overvoltage alarming circuit is respectively provided with a first power supply end, a second power supply end, a first output end and a second output end; the first power supply end of the No. 1-6 balancing and overvoltage alarm circuit is correspondingly connected with the positive electrodes of the super capacitors C5-C10 in parallel; the second power supply ends of the No. 1-6 equalizing and overvoltage alarming circuits are correspondingly connected in parallel with the cathodes of the super capacitors C5-C10; the first power supply end of the No. 1 equalizing and overvoltage alarming circuit and the anode of the super capacitor C5 form a common contact because of being collinear, and the common contact is the anode end of the super capacitor bank module; a second power supply end of the No. 6 balancing and overvoltage alarming circuit, the cathode of the super capacitor C10 and a second output end of the No. 1 to No. 6 balancing and overvoltage alarming circuits form a common contact because of collinearity, and the common contact is the cathode end of the super capacitor group module; the first output ends of the No. 1-6 equalizing and overvoltage alarming circuits form a common contact because of collinearity, and the common contact is the overvoltage signal output end of the super capacitor bank module.
The further scheme is as follows: the No. 1 equalizing and overvoltage alarm circuit comprises a voltage comparator U4, a resistor R10, a field effect transistor Q4, a resistor R12, a capacitor C4, a resistor R9 and an optocoupler U3; the optocoupler U3 is provided with No. 1-4 pins;
the input end of the voltage comparator U4, one end of the resistor R10, one end of the resistor R12, one end of the capacitor C4 and one end of the resistor R9 form a common contact because of collinearity, and the common contact is the first power end of the No. 1 equalizing and overvoltage alarm circuit; the negative end of the voltage comparator U4 and the source electrode of the field effect transistor Q4 form a common contact because of being collinear, and the common contact is the second power supply end of the No. 1 equalizing and overvoltage alarm circuit; the output end of the voltage comparator U4, the other end of the resistor R10 and the grid of the field effect transistor Q4 are collinear; the drain electrode of the field effect transistor Q4, the other end of the resistor R12, the other end of the capacitor C4 and a pin 4 of the optocoupler U3 are collinear; the other end of the resistor R9 is electrically connected with a pin 3 of the optocoupler U3; the pin 1 of the optocoupler U3 is the first output end of the No. 1 equalizing and overvoltage alarm circuit; and a pin 2 of the optocoupler U3 is a second output end of the No. 1 equalizing and overvoltage alarming circuit.
The further scheme is as follows: the first protection module comprises a resistor R5, a resistor R6, a resistor R7 and a field effect transistor Q3; one end of the resistor R5 and one end of the resistor R6 are collinear to form a common node, which is the first power terminal of the first protection module; the other end of the resistor R6 is electrically connected with the drain electrode of the field effect transistor Q3; the source of the field effect transistor Q3 is the second power end of the first protection module; the other end of the resistor R5, one end of the resistor R7 and the grid of the field effect transistor Q3 are collinear; the other end of the resistor R7 is the control signal input end of the first protection module.
The further scheme is as follows: the second protection module comprises a resistor R2, a resistor R3, a field effect transistor Q1 and a field effect transistor Q2; the source of the fet Q1 and one end of the resistor R2 are collinear to form a common node, which is the first power terminal of the second protection module; the drain of the field effect transistor Q1 is the second power end of the second protection module; the grid of the field effect transistor Q1, the other end of the resistor R2 and the drain of the field effect transistor Q2 are collinear; the grid of the field effect transistor Q2 is connected with one end of the resistor R3; the other end of the resistor R3 is the control signal input end of the second protection module; the source of the fet Q2 is the third power terminal of the second protection module.
The further scheme is as follows: the power module 4 comprises a three-terminal voltage regulator U1, an electrolytic capacitor C1 and an electrolytic capacitor C2; the input end of the three-terminal voltage regulator U1 and the anode of the electrolytic capacitor C2 form a common joint because of collineation, and the common joint is the power supply input end of the power supply module; the output end of the three-terminal voltage stabilizer U1 and the anode of the electrolytic capacitor C1 form a common joint because of collineation, and the common joint is the anode of the power supply input end of the power supply module; the GND end of the three-terminal voltage regulator U1, the negative electrode of the electrolytic capacitor C1 and the negative electrode of the electrolytic capacitor C2 form a common joint due to collinear connection, and the common joint is the negative electrode of the power output end of the power supply module.
The further scheme is as follows: the control module comprises a resistor R1, a resistor R4, a resistor R8, a capacitor C3 and an integrated chip U2; the integrated chip U2 is an MCU of R5F10Y16ASP type, and the integrated chip U2 is provided with No. 1-10 pins; pins 9 and 6 of the integrated chip U2 are the first and second control output ends of the control module; the No. 10 pin of the integrated chip U2, one end of the resistor R8, one end of the capacitor C3 and one end of the resistor R4 are collinear; the other end of the resistor R4 is the voltage detection signal input end of the control module; the pin 7 of the integrated chip U2 and one end of the resistor R1 form a common contact because of being collinear, and the common contact is the overvoltage alarm signal input end of the control module; the pin 5 of the integrated chip U2 and the other end of the resistor R1 form a common contact because of collineation, and the common contact is the positive power supply end of the control module; the pin 4 of the integrated chip U2, the other end of the resistor R8 and the other end of the capacitor C3 form a common contact point due to collinear connection, and the common contact point is the negative power supply end of the control module; no. 1-3 pins and No. 8 pins of the integrated chip U2 are vacant.
The further scheme is as follows: the super capacitors C5-C10 are all super capacitor monomers of 2.7V 350F.
The further scheme is as follows: the three-terminal regulator U1 is a 78L05 model regulator.
The invention has the positive effects that: when the automobile electronic voltage stabilizer based on the super capacitor is used, the electric energy generated by an automobile internal generator can be filtered through the super capacitor bank, the voltage fluctuation when the automobile speed is unstable is obviously inhibited, and a stable working power supply can be provided for various circuits in the automobile; the voltage drop when a high-power electric appliance is started during automobile starting and automobile running is obviously compensated, so that the automobile starting efficiency can be improved, the quality of a power supply required by electronic equipment in an automobile can be improved, and the service life of an automobile storage battery can be prolonged; in addition, can utilize the electric energy that ultracapacitor system group stored to start the car smoothly when automobile storage battery is insufficient voltage, the unable problem of starting when effectively solving automobile storage battery insufficient voltage.
Drawings
FIG. 1 is a block diagram of the present invention showing the electrical connection to a battery in an automobile in use;
FIG. 2 is an electrical schematic of the ultracapacitor bank module of FIG. 1;
fig. 3 is an electrical schematic diagram of the invention shown in fig. 1, in addition to the supercapacitor pack module, showing its electrical connection to a battery on a vehicle in use.
The reference numbers in the above figures are as follows:
the device comprises a super capacitor bank module 1, a balance and overvoltage alarm circuit 1-1, a first protection module 2, a second protection module 3, a power supply module 4 and a control module 5.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
(example 1)
Referring to fig. 1, the automotive electronic voltage regulator based on the super capacitor of the present embodiment has a positive terminal and a negative terminal, and mainly comprises a super capacitor bank module 1, a first protection module 2, a second protection module 3, a power module 4 and a control module 5.
The super capacitor bank module 1 is provided with a positive end, a negative end and an overvoltage signal output end; the first protection module 2 is provided with a first power supply end, a second power supply end and a control signal input end; the second protection module 3 is provided with first to third power supply ends and a control signal input end; the power supply module 4 is provided with a power supply input end, a power supply output end anode and a power supply output end cathode; the control module 5 is provided with an overvoltage alarm signal input terminal, first and second control output terminals, a power supply positive terminal and negative terminal, and a voltage detection signal input terminal.
The power input end of the power module 4 and the first power end of the second protection module 3 form a common junction due to collinearity, and the common junction is the positive terminal of the automotive electronic voltage regulator based on the super capacitor in the embodiment; the negative electrode of the power output end of the power module 4, the negative electrode of the power of the control module 5, the second power end of the first protection module 2, the third power end of the second protection module 3, and the negative electrode of the supercapacitor pack module 1 form a common junction due to co-linearity, and the common junction is the negative electrode terminal of the supercapacitor-based automotive electronic voltage regulator of the embodiment.
The positive end of the super capacitor bank module 1, the first power end of the first protection module 2, the second power end of the second protection module 3 and the voltage detection signal input end of the control module 5 are collinear; the control signal input end of the first protection module 2 is electrically connected with the first control output end of the control module 5; the control signal input end of the second protection module 3 is electrically connected with the second control output end of the control module 5; the overvoltage alarm signal input end of the control module 5 is electrically connected with the overvoltage signal output end of the super capacitor bank module 1; the positive power supply end of the control module 5 is electrically connected with the positive power supply output end of the power supply module 4.
Referring to fig. 2, the super capacitor bank module 1 is composed of a super capacitor bank formed by sequentially connecting 6 super capacitors C5-C10 in series and 6 balancing and overvoltage alarm circuits 1-1 of numbers 1-6. In the embodiment, the supercapacitors C5-C10 are 2.7V 350F. The circuit structures of the 6 balancing and overvoltage alarming circuits 1-1 are the same, 1 balancing and overvoltage alarming circuit is arranged on each super capacitor, only the specific circuit of the No. 1 balancing and overvoltage alarming circuit 1-1 arranged on the super capacitor C5 is shown in figure 2, and the No. 2 to No. 6 balancing and overvoltage alarming circuits 1-1 arranged on the other super capacitors C6-C10 are shown in block diagrams.
The No. 1-6 equalizing and overvoltage alarming circuit 1-1 is respectively provided with a first power supply end, a second power supply end, a first output end and a second output end; the first power supply end of the No. 1-6 balancing and overvoltage alarm circuit 1-1 is correspondingly connected with the positive electrodes of the super capacitors C5-C10 in parallel; the second power supply end of the No. 1-6 equalizing and overvoltage alarm circuit 1-1 is correspondingly connected with the negative electrodes of the super capacitors C5-C10 in parallel, wherein the first power supply end of the No. 1 equalizing and overvoltage alarm circuit 1-1 and the positive electrode of the super capacitor C5 are collinear to form a common connection point, and the common connection point is the positive electrode end of the super capacitor bank module 1; the second power supply end of the No. 6 balancing and overvoltage alarming circuit 1-1, the cathode of the super capacitor C10 and the second output ends of the No. 1 to No. 6 balancing and overvoltage alarming circuits 1-1 form a common contact because of collinearity, and the common contact is the cathode end of the super capacitor bank module 1; the first output ends of the No. 1-6 equalizing and overvoltage alarming circuits 1-1 form a common contact point due to the collinear connection, and the common contact point is the overvoltage signal output end of the supercapacitor pack module 1.
The No. 1 equalizing and overvoltage alarm circuit 1-1 mainly comprises a voltage comparator U4, a resistor R10, a field effect transistor Q4, a resistor R12, a capacitor C4, a resistor R9 and an optocoupler U3. The optocoupler U3 has No. 1-4 pins.
An input end (Vin, pin 3) of the voltage comparator U4, one end of the resistor R10, one end of the resistor R12, one end of the capacitor C4 and one end of the resistor R9 form a common junction due to collinearity, and the common junction is a first power end of the No. 1 equalizing and overvoltage alarm circuit 1-1; the negative terminal (Vss, pin 2) of the voltage comparator U4 and the source electrode of the field-effect transistor Q4 form a common contact because of collinearity, and the common contact is the second power supply terminal of the No. 1 equalizing and overvoltage alarm circuit 1-1; the output end (Vot, pin 1) of the voltage comparator U4, the other end of the resistor R10 and the grid electrode of the field effect transistor Q4 are collinear; the drain electrode of the field effect transistor Q4, the other end of the resistor R12, the other end of the capacitor C4 and a No. 4 pin (input end cathode) of the optocoupler U3 are collinear; the other end of the resistor R9 is electrically connected with a pin No. 3 (the positive electrode of the input end) of the optocoupler U3; pin 1 of the optocoupler U3 is the first output end of the No. 1 equalizing and overvoltage alarm circuit 1-1; pin 2 of the optocoupler U3 is the second output end of the above-mentioned equalizing and overvoltage alarm circuit 1-1 No. 1.
Referring to fig. 3, the first protection module 2 is composed of a resistor R5, a resistor R6, a resistor R7, and a field effect transistor Q3. One end of the resistor R5 and one end of the resistor R6 form a common node due to collinearity, and the common node is the first power end of the first protection module 2; the other end of the resistor R6 is electrically connected with the drain electrode of the field effect transistor Q3; the source of the field effect transistor Q3 is the second power end of the first protection module 2; the other end of the resistor R5, one end of the resistor R7 and the grid of the field effect transistor Q3 are collinear; the other end of the resistor R7 is the control signal input end of the first protection module 2.
The second protection module 3 consists of a resistor R2, a resistor R3, a field-effect tube Q1 and a field-effect tube Q2; the source of the fet Q1 and one end of the resistor R2 are collinear to form a common node, which is the first power terminal of the second protection module 3; the drain of the field effect transistor Q1 is the second power end of the second protection module 3; the grid of the field effect transistor Q1, the other end of the resistor R2 and the drain of the field effect transistor Q2 are collinear; the grid of the field effect transistor Q2 is connected with one end of the resistor R3; the other end of the resistor R3 is the control signal input end of the second protection module 3; the source of the fet Q2 is the third power terminal of the second protection module 3.
The power supply module 4 consists of a three-terminal voltage regulator U1, an electrolytic capacitor C1 and an electrolytic capacitor C2. In this embodiment, the three-terminal regulator U1 is preferably a 78L05 model regulator. The input end (Vin, pin 3) of the three-terminal regulator U1 and the anode of the electrolytic capacitor C2 form a common contact due to co-linearity, and the common contact is the power input end of the power module 4; the output end (Vout, pin No. 1) of the three-terminal voltage regulator U1 and the anode of the electrolytic capacitor C1 form a common joint because of collinearity, and the common joint is the anode of the power input end of the power module 4; the GND terminal (pin No. 2) of the three-terminal regulator U1, the negative electrode of the electrolytic capacitor C1, and the negative electrode of the electrolytic capacitor C2 form a common node due to the common line, and the common node is the negative electrode of the power output terminal of the power module 4.
The control module 5 mainly comprises a resistor R1, a resistor R4, a resistor R8, a capacitor C3 and an integrated chip U2. In this embodiment, the integrated chip U2 preferably uses an MCU of R5F10Y16ASP type, and the integrated chip U2 has pins 1-10.
Pin 9 and pin 6 of the integrated chip U2 are the first and second control output ends of the control module 5; the No. 10 pin of the integrated chip U2, one end of the resistor R8, one end of the capacitor C3 and one end of the resistor R4 are collinear; the other end of the resistor R4 is the voltage detection signal input end of the control module 5; a pin 7 of the integrated chip U2 and one end of the resistor R1 form a common contact due to being collinear, and the common contact is the overvoltage alarm signal input end of the control module 5; a pin 5 (VDD terminal) of the integrated chip U2 and the other end of the resistor R1 form a common contact due to co-linearity, and the common contact is the positive power supply terminal of the control module 5; the pin 4 (VSS terminal) of the integrated chip U2, the other terminal of the resistor R8, and the other terminal of the capacitor C3 are collinear to form a common node, which is the aforementioned negative power terminal of the control module 5. No. 1-3 pins and No. 8 pins of the integrated chip U2 are vacant.
When the automotive electronic voltage stabilizer based on the super capacitor is used, the positive and negative terminals of the automotive electronic voltage stabilizer are connected with the positive and negative electrodes of a storage battery on an automobile in parallel, and the working principle and the working process are briefly described as follows:
when the power supply module 4 is in use, the voltage of about DC12V input from the storage battery is converted into DC5V voltage, and working power is provided for the integrated chip U2 of the control module 5.
In operation, in a normal state, pin 6 of the integrated chip U2 of the control module 5 maintains a high level state, pin 9 maintains a low level state, and pin 7 protects a high level state from the potential input from the super capacitor bank module 1; pin 10 of the integrated chip U2 detects the voltage signal of the supercapacitor pack module 1 in real time. The pin 6 of the integrated chip U2 keeps a high level, so that the field effect transistor Q2 of the second protection module 3 keeps a conducting state all the time, and correspondingly, the field effect transistor Q1 of the second protection module 3 keeps a conducting state all the time, so that the super capacitor bank of the super capacitor bank module 1 keeps a parallel state with the storage battery all the time; on one hand, the voltage fluctuation generated by the generator in the running process of the automobile can be restrained, so that the voltage brought by the automobile generator is stabilized; meanwhile, the power shortage of the high-power electrical appliances (such as an air conditioner and the like) when the automobile is started in the running process can be compensated, and the voltage drop of the storage battery is reduced; on the other hand, when the automobile can not be started due to insufficient power of the automobile storage battery, the super capacitor bank is still connected with the storage battery in parallel, and the electric energy stored by the super capacitor bank can start the automobile for 2-3 times, so that the problem that the automobile can not be started due to insufficient power of the storage battery can be effectively solved.
In operation, if a supercapacitor unit in the supercapacitors C5-C10 of the supercapacitor pack module 1 is overvoltage, the overvoltage of the supercapacitor C5 is taken as an example for explanation: when a super capacitor C5 in a super capacitor bank is in overvoltage, the input end of a voltage comparator U4 of a No. 1 equalizing and overvoltage alarm circuit 1-1 arranged on the super capacitor C5 detects that the voltage of the super capacitor C5 exceeds a set value, the output end of the voltage comparator U4 outputs high level, so that a field effect tube Q4 is conducted, a resistor R12 slowly discharges the super capacitor C5 until the voltage of the super capacitor C5 is lower than the set value to play a role in voltage equalization; meanwhile, after the field effect transistor Q4 is switched on, the pin 3 and the pin 4 of the optocoupler U3 are switched on, the optocoupler U3 works, the pin 1 of the optocoupler is switched from a high level state to a low level state, and an overvoltage alarm signal is output; when the integrated chip U2 of the control module 5 detects that the potential of the pin 7 changes from high level to low level, the integrated chip U2 controls the pin 6 to change from high level to low level, turns off the fet Q2 of the second protection module 3, and correspondingly turns off the fet Q1 of the second protection module 3; thereby the electric connection between the super capacitor bank module 1 and the positive pole of the storage battery is disconnected, and the function of protecting the super capacitor bank and the storage battery is achieved.
In operation, pin 10 of the integrated chip U2 of the control module 5 detects the voltage of the supercapacitor pack module 1 in real time, and the voltage detection principle is as follows: through the resistor R4 connected with the anode of the super capacitor bank module 1 and the resistor R8 connected with the resistor R4, the integrated chip U2 can measure the voltage on the resistor R8 through the pin 10, the integrated chip U2 calculates the current voltage of the super capacitor bank module 1 through the resistance values of the resistor R4 and the resistor R8, compares the current voltage with the voltage threshold value built in the integrated chip U2, if the detected voltage value exceeds the set voltage threshold value, the integrated chip U2 controls the pin 9 to change from the low level state in the normal state to the high level state, so as to turn on the field effect tube Q3 of the first protection module 2, the resistor R6 of the first protection module 2 starts to slowly discharge the super capacitor bank of the super capacitor bank module 1 until the voltage value detected by the pin 10 of the integrated chip U2 is not higher than the built-in voltage threshold value, the integrated chip U2 controls the pin 9 to change from the high level state to the low level state in the normal working state, the fet Q3 of the first protection module 2 is turned off, and the slow discharge operation of the resistor R6 of the first protection module 2 is stopped. This function is used for when the automobile power generation machine is not to the battery charge, reduces the voltage of the ultracapacitor system group of ultracapacitor system group module 1 to the float charge voltage of battery, prevents that the battery from overcharging in order to prolong battery life.
The above embodiments are illustrative of specific embodiments of the present invention, and are not restrictive of the present invention, and those skilled in the relevant art can make various changes and modifications without departing from the spirit and scope of the present invention to obtain corresponding equivalent technical solutions, and therefore all equivalent technical solutions should be included in the scope of the present invention.
Claims (7)
1. The utility model provides an automotive electronics stabiliser based on ultracapacitor system, has positive terminal and negative terminal, its characterized in that: the automotive electronic voltage stabilizer comprises a super capacitor bank module, a first protection module, a second protection module, a power supply module and a control module;
the super capacitor bank module is provided with a positive end, a negative end and an overvoltage signal output end; the first protection module is provided with a first power supply end, a second power supply end and a control signal input end; the second protection module is provided with first to third power supply ends and a control signal input end; the power supply module is provided with a power supply input end, a power supply output end anode and a power supply output end cathode; the control module is provided with an overvoltage alarm signal input end, a first control output end, a second control output end, a power supply positive end, a power supply negative end and a voltage detection signal input end;
the power input end of the power supply module and the first power end of the second protection module form a common joint due to collineation, and the common joint is the positive terminal of the automotive electronic voltage stabilizer; the negative electrode of the power output end of the power module, the negative electrode end of the power of the control module, the second power end of the first protection module, the third power end of the second protection module and the negative electrode end of the super capacitor bank module form a common contact because of collinearity, and the common contact is the negative electrode wiring end of the automotive electronic voltage stabilizer;
the first protection module comprises a resistor R5, a resistor R6, a resistor R7 and a field effect transistor Q3; one end of the resistor R5 and one end of the resistor R6 are collinear to form a common contact, and the common contact is a first power supply end of the first protection module; the other end of the resistor R6 is electrically connected with the drain electrode of the field effect transistor Q3; the source electrode of the field effect transistor Q3 is the second power supply end of the first protection module; the other end of the resistor R5, one end of the resistor R7 and the grid of the field effect transistor Q3 are collinear; the other end of the resistor R7 is a control signal input end of the first protection module;
the second protection module comprises a resistor R2, a resistor R3, a field effect transistor Q1 and a field effect transistor Q2; the source of the field effect transistor Q1 and one end of the resistor R2 form a common junction because of being collinear, and the common junction is the first power end of the second protection module; the drain electrode of the field effect transistor Q1 is the second power supply end of the second protection module; the grid of the field effect transistor Q1, the other end of the resistor R2 and the drain of the field effect transistor Q2 are collinear; the grid of the field effect transistor Q2 is connected with one end of the resistor R3; the other end of the resistor R3 is a control signal input end of the second protection module; the source electrode of the field effect transistor Q2 is the third power supply end of the second protection module;
the positive end of the super capacitor bank module, the first power supply end of the first protection module, the second power supply end of the second protection module and the voltage detection signal input end of the control module are collinear; the control signal input end of the first protection module is electrically connected with the first control output end of the control module; the control signal input end of the second protection module is electrically connected with the second control output end of the control module; the overvoltage alarm signal input end of the control module is electrically connected with the overvoltage signal output end of the super capacitor bank module; the positive end of the power supply of the control module is electrically connected with the positive end of the power supply output end of the power supply module;
when the automobile electronic voltage stabilizer is used, the positive terminal and the negative terminal of the automobile electronic voltage stabilizer are correspondingly and electrically connected with the positive terminal and the negative terminal of a storage battery on an automobile.
2. The supercapacitor-based automotive electronic voltage regulator according to claim 1, wherein: the super capacitor bank module consists of a super capacitor bank formed by sequentially connecting 6 super capacitors C5-C10 in series and 6 balancing and overvoltage alarm circuits No. 1-6; the circuit structures of the 6 balancing and overvoltage alarming circuits are the same, and each super capacitor is provided with 1 super capacitor; the No. 1-6 equalizing and overvoltage alarming circuit is respectively provided with a first power supply end, a second power supply end, a first output end and a second output end; the first power supply end of the No. 1-6 balancing and overvoltage alarm circuit is correspondingly connected with the positive electrodes of the super capacitors C5-C10 in parallel; the second power supply ends of the No. 1-6 equalizing and overvoltage alarming circuits are correspondingly connected in parallel with the cathodes of the super capacitors C5-C10; the first power supply end of the No. 1 equalizing and overvoltage alarming circuit and the anode of the super capacitor C5 form a common contact because of being collinear, and the common contact is the anode end of the super capacitor bank module; a second power supply end of the No. 6 balancing and overvoltage alarming circuit, the cathode of the super capacitor C10 and a second output end of the No. 1 to No. 6 balancing and overvoltage alarming circuit form a common contact due to collinearity, and the common contact is the cathode end of the super capacitor group module; the first output ends of the No. 1-6 equalizing and overvoltage alarming circuits form a common contact point due to the collinear connection, and the common contact point is an overvoltage signal output end of the super capacitor bank module.
3. The supercapacitor-based automotive electronic voltage regulator according to claim 2, wherein: the No. 1 equalizing and overvoltage alarm circuit comprises a voltage comparator U4, a resistor R10, a field effect transistor Q4, a resistor R12, a capacitor C4, a resistor R9 and an optocoupler U3; the optocoupler U3 is provided with No. 1-4 pins;
the input end of the voltage comparator U4, one end of the resistor R10, one end of the resistor R12, one end of the capacitor C4 and one end of the resistor R9 form a common joint due to collinearity, and the common joint is a first power supply end of the No. 1 equalizing and overvoltage alarm circuit; the negative end of the voltage comparator U4 and the source electrode of the field-effect transistor Q4 form a common contact because of being collinear, and the common contact is the second power supply end of the No. 1 equalizing and overvoltage alarm circuit; the output end of the voltage comparator U4, the other end of the resistor R10 and the grid of the field effect transistor Q4 are collinear; the drain electrode of the field effect transistor Q4, the other end of the resistor R12, the other end of the capacitor C4 and a pin 4 of the optocoupler U3 are collinear; the other end of the resistor R9 is electrically connected with a pin 3 of the optocoupler U3; the pin 1 of the optocoupler U3 is the first output end of the No. 1 equalizing and overvoltage alarm circuit; and a pin 2 of the optocoupler U3 is a second output end of the No. 1 equalizing and overvoltage alarming circuit.
4. The automotive electronic voltage regulator based on the supercapacitor as claimed in any one of claims 1 to 3, characterized in that: the power supply module 4 comprises a three-terminal voltage regulator U1, an electrolytic capacitor C1 and an electrolytic capacitor C2; the input end of the three-terminal voltage regulator U1 and the anode of the electrolytic capacitor C2 form a common joint because of collineation, and the common joint is the power supply input end of the power supply module; the output end of the three-terminal voltage regulator U1 and the anode of the electrolytic capacitor C1 form a common joint because of collineation, and the common joint is the anode of the power supply input end of the power supply module; the GND end of the three-terminal voltage regulator U1, the negative electrode of the electrolytic capacitor C1 and the negative electrode of the electrolytic capacitor C2 form a common joint due to collinear connection, and the common joint is the negative electrode of the power output end of the power supply module.
5. The automotive electronic voltage regulator based on the supercapacitor as claimed in any one of claims 1 to 3, characterized in that: the control module comprises a resistor R1, a resistor R4, a resistor R8, a capacitor C3 and an integrated chip U2; the integrated chip U2 is an MCU of R5F10Y16ASP type, and the integrated chip U2 is provided with No. 1-10 pins; pins 9 and 6 of the integrated chip U2 are the first and second control output ends of the control module; the No. 10 pin of the integrated chip U2, one end of the resistor R8, one end of the capacitor C3 and one end of the resistor R4 are collinear; the other end of the resistor R4 is a voltage detection signal input end of the control module; a pin 7 of the integrated chip U2 and one end of the resistor R1 form a common contact because of being collinear, and the common contact is the overvoltage alarm signal input end of the control module; the pin 5 of the integrated chip U2 and the other end of the resistor R1 form a common contact because of collineation, and the common contact is the positive power supply end of the control module; the pin 4 of the integrated chip U2, the other end of the resistor R8 and the other end of the capacitor C3 form a common contact point due to collinear connection, and the common contact point is the negative power supply end of the control module; no. 1-3 pins and No. 8 pins of the integrated chip U2 are vacant.
6. The supercapacitor-based automotive electronic voltage regulator according to claim 2, wherein: the super capacitors C5-C10 are all super capacitor monomers of 2.7V 350F.
7. The supercapacitor-based automotive electronic voltage regulator according to claim 4, wherein: the three-terminal regulator U1 is a 78L05 model regulator.
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| CN201025205Y (en) * | 2007-03-26 | 2008-02-20 | 康国强 | Assisted start device for car |
| US20110089899A1 (en) * | 2009-10-20 | 2011-04-21 | Xin Xu | Lithium-ion auto startup storage battery with a supercapacitor function |
| CN102691607B (en) * | 2012-06-08 | 2014-12-03 | 汤如法 | Auxiliary starting device of vehicle engine |
| CN203387214U (en) * | 2013-06-17 | 2014-01-08 | 安科智慧城市技术（中国）有限公司 | Automobile emergency starting power supply and automobile power supply device |
| CN105365595B (en) * | 2015-11-13 | 2017-08-25 | 宁波市江北九方和荣电气有限公司 | Electric automobile power battery and super capacitor dynamical system and control method |
| CN106965761B (en) * | 2016-01-13 | 2020-10-20 | 厦门雅迅网络股份有限公司 | Power-off protection device for vehicle-mounted equipment system |
| CN106335377B (en) * | 2016-08-30 | 2019-02-01 | 合肥博雷电气有限公司 | A kind of vehicle-mounted composite power supply unit based on super capacitor |
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