CN111502882B - Heavy vehicle starting emergency power supply system of EDLC capacitor - Google Patents
Heavy vehicle starting emergency power supply system of EDLC capacitor Download PDFInfo
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- CN111502882B CN111502882B CN202010341822.1A CN202010341822A CN111502882B CN 111502882 B CN111502882 B CN 111502882B CN 202010341822 A CN202010341822 A CN 202010341822A CN 111502882 B CN111502882 B CN 111502882B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/0862—Circuits or control means specially adapted for starting of engines characterised by the electrical power supply means, e.g. battery
- F02N11/0866—Circuits or control means specially adapted for starting of engines characterised by the electrical power supply means, e.g. battery comprising several power sources, e.g. battery and capacitor or two batteries
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/087—Details of the switching means in starting circuits, e.g. relays or electronic switches
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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The invention discloses a heavy vehicle starting emergency power supply system of an EDLC (electronic discharge control) capacitor, and particularly relates to the field of automobile low-temperature starting power supply systems, which comprises a storage battery, wherein the storage battery supplies power to a starter of an engine through a discharge circuit, and two ends of the storage battery are connected with an EDLC capacitor starting power supply device in parallel; the EDLC capacitor starting power supply device consists of an EDLC capacitor, a microcontroller, a relay, a sensor, a clock/pulse width modulation module and an automatic control switch and is integrated on a system circuit board; the storage battery charges the EDLC capacitor through the boosting charging circuit. The system of the invention utilizes the characteristics of large capacitance capacity, long charging and discharging service life, short charging time, capability of providing very high discharging current, small internal resistance, wide normal working temperature range and the like to replace partial energy of the storage battery and the energy of the battery core of the power supply system through an electronic control technology, and releases the partial energy and the energy at proper time, thereby improving the effective energy and the starting capability of the automobile power supply.
Description
Technical Field
The embodiment of the invention relates to the field of automobile low-temperature starting power supply systems, in particular to a heavy vehicle starting emergency power supply system of an EDLC capacitor.
Background
Low temperature starting performance is one of the main properties of heavy-duty automobiles. When the vehicle is left for a long time at low temperature or in a power consumption state for a long time, the accumulator battery power supply cannot be started or the starting time is long. The system brings inconvenience to users, especially for military use, fire-fighting emergency and other vehicles, and even delays the time, resulting in immeasurable loss.
Due to the influence of geographical positions and natural conditions in northern, northwest and northeast regions of China, the climate conditions are quite severe, and the lowest temperature is even lower than-40 to-60 ℃. Under such environmental conditions, the starting performance of the automobile is excellent, and the normal operation of the automobile cannot be guaranteed.
At present, the main domestic methods for solving the problem of automobile starting in winter in severe cold areas comprise the following steps: the method comprises the steps of starting liquid filling, air inlet preheating, engine flame preheating, fuel heater heating, storage battery heating and heat preservation and the like. These methods can improve the cold start performance of the automobile to some extent. But the process is complicated, the consumed time is long, the manpower and the fuel are wasted, and potential safety hazards exist. Therefore, the method has important significance in deeply researching the starting condition of the heavy-duty automobile under the low-temperature condition, improving the starting performance of the heavy-duty automobile and ensuring the smooth starting and running of the heavy-duty automobile at the low temperature.
Analysis of the automobile low-temperature starting process: starting of an automobile means that the engine crankshaft starts to rotate under the action of an external force. Until the engine automatically goes to idle. For vehicle start-up, the worst case is a low temperature start-up. When the vehicle is in an extremely low temperature environment, the starting difficulty is mainly due to the following reasons:
a. the viscosity of the lubricating oil is increased, the fluidity is poor, so that the oil supply among the friction pairs is insufficient, semi-dry friction or dry friction is formed, the movement resistance among the friction pairs is increased, and the starting resistance moment is increased;
b. the viscosity and density of the fuel oil are increased, the fluidity is poor, the atomization is poor, and the ignition lag period is prolonged. Meanwhile, the temperature of air entering the air cylinder is low, and parts such as cooling liquid, an air cylinder sleeve, a piston and the like absorb more heat in the working process, so that the heat loss is increased, the temperature of mixed gas is reduced, and the combustion condition is severe;
c. the internal resistance and viscosity of the electrolyte of the storage battery are increased, the permeability to the polar plate is reduced, active substances in the inner layer of the polar plate cannot be fully utilized during discharging, the output capacity is greatly reduced, and the starter cannot drag the engine to reach the lowest starting rotating speed. The low-temperature start of the automobile originally requires a large starting power, but the output power of the battery at low temperature is greatly reduced.
In order to ensure proper starting of the vehicle, the vehicle power system must be able to provide sufficient energy to bring the engine to the minimum starting speed. At present, the main methods for starting automobiles at low temperature in China do not fundamentally solve the problem, and the energy of storage batteries is consumed by some methods.
Disclosure of Invention
Therefore, the embodiment of the invention provides an EDLC capacitor heavy-duty vehicle starting emergency power supply system, which replaces partial energy of a storage battery and energy of a power supply system battery cell through an electronic control technology, releases the partial energy and the energy at a proper time, improves effective energy and starting capacity of an automobile power supply and solves the problems in the prior art.
In order to achieve the purpose, on the basis of analyzing the feeding starting process when the heavy-duty automobile is in a low-temperature state, and combining the discharge characteristics of a storage battery and a capacitor under a low-temperature condition, the embodiment of the invention provides the following technical scheme: a heavy-duty vehicle starting emergency power supply system of an EDLC capacitor comprises a storage battery, wherein the storage battery supplies power to a starter of an engine through a discharge circuit, and two ends of the storage battery are connected with an EDLC capacitor starting power supply device in parallel;
the EDLC capacitor starting power supply device consists of an EDLC capacitor, a microcontroller, a relay, a sensor, a clock/pulse width modulation module and an automatic control switch and is integrated on a system circuit board;
the storage battery charges the EDLC capacitor through the boost charging circuit, the automatic control switch is arranged on the charging circuit and is controlled by the microcontroller, and the EDLC capacitor supplies power to a starter of the engine through the discharging circuit;
the microcontroller collects an ignition switch signal through a relay, the microcontroller collects an ambient temperature signal, a storage battery voltage signal and a capacitor voltage signal through a sensor, and the pulse width modulation module collects an engine rotating speed signal to obtain the number of pulses in unit time, so that the rotating speed of the engine is calculated and data is sent to the microcontroller; the output end of the microcontroller is connected with the boosting charging circuit and the discharging circuit;
the microcontroller integrates the external environment temperature, the engine rotating speed and the starting time information, and determines the discharging time of the EDLC capacitor through a control algorithm.
Further, still include the shell, EDLC capacitor starts power supply unit, installs on the car, EDLC capacitor starts power supply unit includes the shell, EDLC capacitor and battery are all fixed in the shell.
Further, the boost charging circuit includes a boost converter.
Further, the sensor comprises a temperature sensor, a storage battery voltage sensor and a capacitance voltage sensor, the temperature sensor, the storage battery voltage sensor and the capacitance voltage sensor are respectively used for collecting the ambient temperature, the storage battery voltage and the capacitance voltage, and the sensor is connected with the microcontroller through a high-precision converter and used for collecting signals.
Further, the microcontroller is a single chip microcomputer, and the single chip microcomputer comprises a RAM.8KB built-in memory of 512B, an illumination interface, a USB interface, a cigarette lighter interface and an automatic alarm.
Furthermore, the microcontroller adopts a USB interface to output a control signal of the boosting circuit to the boosting charging circuit, and the control signal is used for controlling the storage battery to boost and charge the EDLC capacitor.
Further, the microcontroller outputs a capacitance energy output control signal to the storage battery and the EDLC capacitor through the USB interface, and the capacitance energy output control signal is used for controlling the storage battery and the EDLC capacitor to supply power to a starter of the engine.
Further, the microcontroller outputs an indicator light signal to the charging indicator light and the parallel indicator light through the lighting interface, and the charging indicator light and the parallel indicator light are integrated on the system circuit board.
The embodiment of the invention has the following advantages:
1. the system of the invention utilizes the characteristics of large capacitance capacity, long charging and discharging service life, short charging time, capability of providing very high discharging current, small internal resistance, wide normal working temperature range and the like, replaces partial energy of the storage battery and the energy of the battery core of the power supply system by an electronic control technology, releases the energy at proper time and improves the effective energy and the starting capability of the automobile power supply;
2. the starting power supply device of the EDLC capacitor is directly connected to two ends of the storage battery in parallel, and the electric energy starts to discharge after the engine is started, so that the stored energy can play a role when the energy is not needed to the maximum; the discharge of the EDLC capacitor is researched, the control strategy is researched, the discharge time is controlled, the discharge time is released at the moment when the rotating speed of the engine is needed to be increased most, the requirement of the engine on energy in the transition process from the flutter stage to the rotating speed stabilization stage is met, the success rate of starting is improved, and the low-temperature starting performance of the automobile is improved;
3. before starting, the storage battery charges the EDLC capacitor in a constant-current mode, so that the charging current is small, the energy of the storage battery is released slowly and slightly, the starting energy of the storage battery is not greatly influenced, and the energy of the storage battery is transferred and effectively utilized.
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 should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a block diagram of an overall system provided by the present invention;
FIG. 2 is a schematic diagram of the overall system provided by the present invention;
FIG. 3 is a circuit diagram of a parallel connection of a battery and an EDLC capacitor start-up power supply unit according to the present invention;
FIG. 4 is an external view of the starting power supply apparatus for the EDLC capacitor according to the present invention;
FIG. 5 is a schematic diagram of the internal structure of the starting power supply device for the EDLC capacitor according to the present invention;
FIG. 6 is a diagram of a prior art engine starting process at-40 deg.C provided by the present invention;
FIG. 7 is a graph illustrating the variation of the output current of the battery with time according to the prior art;
in the figure: 1 accumulator, 2EDLC capacitor starting power supply, 21EDLC capacitor, 22 microcontroller, 23 relay, 24 sensor, 25 clock/pulse width modulation module, 26 automatic control switch, 27 system circuit board, 28 housing.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
we take the Shaanqi heavy truck N3000 car as a test object to study, and assemble the Weichai 6BT5.9 type diesel engine and the sail brand low-temperature storage battery 1. The starting process of the engine at the temperature of-40 ℃ can be divided into 4 stages: a starting stage, a temperature rising stage, a shaking stage and a stable operation stage. As shown in fig. 6.
In the starting stage, the starter drags each friction pair of the engine to rotate from a standstill, oil supply between the friction pairs is insufficient, semi-dry friction or dry friction is formed, starting resistance moment is large, and energy consumption is large. Along with the rotation of the engine, the lubricating state between the friction pairs is gradually improved, the resistance is reduced, the rotating speed is slowly increased, and meanwhile, the piston compresses air, so that the temperature in the cylinder is also gradually increased, and the atomization of fuel oil is improved. To create an advantageous condition for the fire, defined as the warm-up phase, the energy demand on the power supply is reduced. With increasing rotational speed, the combustion conditions improve. The individual cylinders of the engine start to catch fire, the engine shakes, and the engine enters a shaking stage. From the shaking stage of individual cylinder ignition to the stage of stable rotation speed and successful engine starting, the power supply is required to provide larger output power, so that the rotation speed of the engine is rapidly increased. However, since the ionization performance of the electrolyte of the lead acid storage battery 1 under low temperature conditions is deteriorated, the terminal voltage and the effective output current of the storage battery 1 are remarkably decreased. Particularly, at the temperature of-40 ℃, the effective energy output can not be more than 10 percent of the rated capacity, and the requirement of each stage of the starting process on the energy cannot be met. The curve of the output current of the battery 1 with time when the engine is started in an environment of-40 ℃. As shown in fig. 7.
When the engine starts, the output current of the storage battery 1 is large, the part of energy is mainly used for overcoming the resistance torque and dragging the engine to rotate, and the energy consumption is large. The output average current of the battery 1 rapidly decreases and gradually decreases with the lapse of time. When the starting process progresses from the judder phase to the rotational speed stabilization phase and the battery 1 is required to provide a larger output power, its output capacity is already insufficient. The rotating speed of the engine cannot be rapidly increased, which is not beneficial to successful starting and even leads to failed starting. After a period of time, when the electric quantity of the storage battery 1 is recovered, and the storage battery is started again, the energy which can be output by the storage battery 1 is less than that of the previous time, and the starting success rate is lower.
With reference to the attached fig. 1-3 of the specification, the heavy-duty vehicle starting emergency power supply system of the EDLC capacitor of the embodiment comprises a storage battery 1, wherein the storage battery 1 supplies power to a starter of an engine through a discharge circuit, and two ends of the storage battery 1 are connected with an EDLC capacitor starting power supply device 2 in parallel;
the EDLC capacitor starting power supply device 2 consists of an EDLC capacitor 21, a microcontroller 22, a relay 23, a sensor 24, a clock/pulse width modulation module 25 and an automatic control switch 26 and is integrated on a system circuit board 27;
the storage battery 1 charges an EDLC capacitor 21 through a boosting charging circuit, an automatic control switch 26 is arranged on the charging circuit and is controlled by a microcontroller 22, and the EDLC capacitor 21 supplies power to a starter of an engine through a discharging circuit;
the microcontroller 22 acquires an ignition switch signal through the relay 23, the microcontroller 22 acquires an ambient temperature signal, a storage battery 1 voltage signal and a capacitance voltage signal through the sensor 24, and the pulse width modulation module acquires an engine rotating speed signal to obtain the number of pulses in unit time, so that the rotating speed of the engine is calculated and data is sent to the microcontroller 22; the output end of the microcontroller 22 is connected with the boost charging circuit and the discharging circuit;
the microcontroller 22 integrates the external environment temperature, the engine speed and the start time information, and determines the discharge time of the EDLC capacitor 21 through a control algorithm.
Further, the boost charging circuit includes a boost converter.
Further, the sensor 24 includes a temperature sensor, a battery voltage sensor, and a capacitance voltage sensor, which are respectively used for acquiring the ambient temperature, the voltage of the battery 1, and the capacitance voltage, and the sensor 24 is connected to the microcontroller 22 through a high-precision converter, and is used for acquiring signals. The model of the temperature sensor is set to WZP-PT100, and the storage battery voltage sensor and the capacitance voltage sensor adopt CHV-25P voltage sensors.
Further, the microcontroller 22 is a single chip microcomputer, and the single chip microcomputer includes a ram.8kb internal memory of 512B, an illumination interface, a USB interface, a cigarette lighter interface, and an automatic alarm.
Further, the microcontroller 22 outputs a boost circuit control signal to the boost charging circuit by using a USB interface (normal AB port) for controlling the storage battery 1 to boost and charge the EDLC capacitor 21.
Further, the microcontroller 22 outputs a capacitive energy output control signal to the battery 1 and the EDLC capacitor 21 through the USB interface, for controlling the battery 1 and the EDLC capacitor 21 to supply power to the starter of the engine.
Further, the microcontroller 22 outputs indicator light signals to the charge indicator light and the parallel indicator light through the illumination interface, and the charge indicator light and the parallel indicator light are integrated on the system circuit board 27.
The implementation scenario is specifically as follows: the invention utilizes the characteristics of fast charging, large capacity, large discharging current and the like of the capacitor to connect the EDLC capacitor starting power supply device 2 to a vehicle power supply system in parallel, the microcontroller 22 controls the automatic control switch 26, and a boosting charging circuit is utilized to store a part of energy of the storage battery 1 into the EDLC capacitor 21; when the pulse width modulation module detects that the rotating speed of the engine rises to the point that a certain cylinder catches fire, the microcontroller 22 controls the EDLC capacitor 21 to discharge, the charged electric quantity after boosting is quickly released, the rotating speed of the engine rises quickly, and the engine is ensured to be started successfully at one time. Before starting, the storage battery 1 charges the EDLC capacitor 21 in a constant current mode, the charging current is small, the energy of the storage battery 1 is released slowly and slightly, the starting energy of the storage battery 1 is not greatly influenced, and the energy of the storage battery 1 is transferred and effectively utilized.
The invention connects the starting power supply device 2 of the EDLC capacitor to the two ends of the accumulator 1 in parallel directly, the parallel indicator lights up, starts discharging from the start of the engine, makes the stored energy play a role when the energy is not needed most. The discharge of the EDLC capacitor 21 is researched, the control strategy is researched, the discharge time is controlled, the discharge time is released at the moment when the rotating speed of the engine needs to be increased, the requirement of the engine on energy in the transition process from the flutter stage to the rotating speed stabilization stage is met, the success rate of starting is improved, the low-temperature starting performance of the automobile is improved, and certain innovativeness is achieved. Meanwhile, in order to improve the energy stored in the EDLC capacitor 21 and the cell energy of the emergency power supply, the charging voltage of the EDLC capacitor 21 is increased, so that the stored energy is increased by 20 times, and the capacitance mass and volume required by unit electric quantity are greatly reduced.
The system design hardware consists of EDLC capacitors 21, a microcontroller 22, relays 23, sensors 24, a clock/pulse width modulation module 25 and an automatic control switch 26.
The EDLC capacitor 21 is an electrochemical energy storage device with limitations on volume and mass, and the usual capacity is generally between 45-70F, which makes it difficult to continue improvement. Since the stored energy shape of a capacitor depends on the capacitance of the capacitor and the voltage across the capacitor, i.e.: power capacity voltage 2/2. In order to increase the energy stored in the capacitor, the invention is provided with the boost charging circuit, so that the charging voltage of the capacitor can be increased. Under the condition that the volume of the capacitor is not changed, when the terminal voltage of the capacitor is increased from 24V to 36V, the energy storage capacity of the capacitor and the energy of a lithium cobaltate battery cell of the emergency power supply can be increased to 20 times or even 50 times of the original capacity, and the discharge capacity of the capacitor is super strong;
the microcontroller 22 is a newly-introduced singlechip with strong function, small volume and low cost, and the bus clock of the chip can reach 20MHz at most and is provided with a built-in RAM (random access memory) of 512B (random access memory) of 8 KB. The peripheral interfaces are rich, and the multifunctional USB flash disk has the functions of illumination, USB, cigar lighter interfaces, automatic alarm and the like, and is convenient to communicate with external equipment;
the adoption of a multi-path high-precision converter and a multi-path time delay pulse width modulation module facilitates signal acquisition;
in the system, 3 paths of sensors 24 are used for respectively acquiring ambient temperature, voltage of a storage battery 1 and capacitance voltage signals; the clock/pulse width modulation module 25 is used for collecting the engine rotating speed signal to obtain the pulse number in unit time, so that the rotating speed of the engine is calculated;
The main function of the system circuit board 27 is to control the charging and discharging of the capacitor, when the system is charged, the sensor 24 detects the ambient temperature and the capacitor voltage to determine whether the auxiliary power supply is needed, if so, the automatic control switch 26 turns on the switch of the storage battery 1, the power indicator lamp is on, and when the voltage at the two ends of the EDLC capacitor 21 reaches the preset starting target value, the power indicator lamp is turned off, and the EDLC capacitor can enter the starting state. During the starting process of the automobile, the microcontroller 22 synthesizes the information of the external environment temperature, the engine rotating speed, the starting time and the like, and determines the discharging time of the low-temperature capacitor through a control algorithm.
Referring to the attached fig. 4-5 of the specification, the EDLC capacitor starting power supply device 2 is further provided and installed on a vehicle, the EDLC capacitor starting power supply device 2 comprises a housing 28, and the EDLC capacitor 21 and the storage battery 1 are both fixed in the housing 28.
Example 2:
test analysis the EDLC capacitor 21 low-temperature starting emergency power supply system is installed on an N3000 heavy truck automobile of Shaanqi, and is applied to cold low-temperature and ultra-low-temperature starting in three provinces of Xinjiang and northeast.
In the loading state at an ambient temperature of-4 l ℃: firstly, an EDLC capacitor starting power supply device 2 is connected with an original power supply system in parallel to serve as an auxiliary power supply; the microcontroller 22 acquires an ambient temperature signal through a temperature sensor, and judges whether the starting needs an auxiliary power supply (the software sets that the auxiliary power supply works when the ambient temperature is lower than 5 ℃); then, the EDLC capacitor 21 is charged by the boost charging circuit, and the charging process takes approximately 2 min. After the charging is finished, namely the charging indicator lamp is turned off, the starting switch can be rotated to enter a starting state. In the test, the engine is successfully started once, and the expected effect is achieved.
In the starting process, when the EDLC capacitor 21 and the power supply battery core are discharged together, the input current of the instantaneous starter is increased by nearly 1000A, so that the rotating speed of the engine is rapidly increased, and the successful ignition starting is achieved.
The invention designs the hardware circuit and the control software of the system, researches the control strategy of the capacitor release energy gap, and carries out test verification and analysis, and tests prove that the system effectively improves the low-temperature starting performance of the vehicle, shortens the starting time, saves energy, and creates economic benefit maximization and various performance guarantees of the vehicle.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (8)
1. A heavy vehicle starting emergency power supply system of EDLC capacitor, includes battery (1), battery (1) is through discharge circuit to the starter power supply of engine, characterized by: two ends of the storage battery (1) are connected with an EDLC capacitor starting power supply device (2) in parallel;
the EDLC capacitor starting power supply device (2) consists of an EDLC capacitor (21), a microcontroller (22), a relay (23), a sensor (24), a clock/pulse width modulation module (25) and an automatic control switch (26), and is integrated on a system circuit board (27);
the storage battery (1) charges an EDLC capacitor (21) through a boosting charging circuit, an automatic control switch (26) is arranged on the charging circuit and is controlled by a microcontroller (22), and the EDLC capacitor (21) supplies power to a starter of an engine through a discharging circuit;
the microcontroller (22) collects ignition switch signals through a relay (23), the microcontroller (22) collects ambient temperature, voltage of the storage battery (1) and capacitance voltage signals through a sensor (24), the pulse width modulation module collects engine rotating speed signals, the engine rotating speed is calculated, and data are sent to the microcontroller (22); the output end of the microcontroller (22) is connected with the boosting charging circuit and the discharging circuit;
the microcontroller (22) integrates the external environment temperature, the engine speed and the starting time information, and determines the discharging time of the EDLC capacitor (21) through a control algorithm.
2. The heavy vehicle starting emergency power supply system of EDLC capacitors as claimed in claim 1, wherein: still include shell (28), EDLC capacitor start power supply unit (2), install on the car, EDLC capacitor start power supply unit (2) include shell (28), EDLC capacitor (21) and battery (1) all are fixed in shell (28).
3. The heavy vehicle starting emergency power supply system of EDLC capacitors as claimed in claim 1, wherein: the boost charging circuit includes a boost converter.
4. The heavy vehicle starting emergency power supply system of EDLC capacitors as claimed in claim 1, wherein: the sensor (24) comprises a temperature sensor, a storage battery voltage sensor and a capacitance voltage sensor, and is respectively used for collecting the ambient temperature, the voltage of the storage battery (1) and the capacitance voltage, and the sensor (24) is connected with the microcontroller (22) through a converter and is used for collecting signals.
5. The heavy vehicle starting emergency power supply system of EDLC capacitors as claimed in claim 1, wherein: the microcontroller (22) is a single chip microcomputer which comprises a RAM.8KB built-in memory of 512B, an illumination interface, a USB interface, a cigarette lighter interface and an automatic alarm.
6. The heavy vehicle starting emergency power supply system of EDLC capacitors of claim 5, wherein: and the microcontroller (22) adopts a USB interface to output a control signal of the boosting circuit to the boosting charging circuit, and is used for controlling the storage battery (1) to boost and charge the EDLC capacitor (21).
7. The heavy vehicle starting emergency power supply system of EDLC capacitors of claim 5, wherein: and the microcontroller (22) outputs a capacitance energy output control signal to the storage battery (1) and the EDLC capacitor (21) through the USB interface, and is used for controlling the storage battery (1) and the EDLC capacitor (21) to supply power to a starter of an engine.
8. The heavy vehicle starting emergency power supply system of EDLC capacitors of claim 5, wherein: the microcontroller (22) outputs indicator light signals to the charging indicator light and the parallel indicator light through the lighting interface, and the charging indicator light and the parallel indicator light are integrated on the system circuit board (27).
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| CN111502882A (en) | 2020-08-07 |
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