CN116780681A - Automobile storage battery starting system - Google Patents

Automobile storage battery starting system Download PDF

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Publication number
CN116780681A
CN116780681A CN202210238512.6A CN202210238512A CN116780681A CN 116780681 A CN116780681 A CN 116780681A CN 202210238512 A CN202210238512 A CN 202210238512A CN 116780681 A CN116780681 A CN 116780681A
Authority
CN
China
Prior art keywords
module
storage battery
starting
charge
super capacitor
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.)
Pending
Application number
CN202210238512.6A
Other languages
Chinese (zh)
Inventor
刘时雨
郭兵
赵世兴
覃锦军
胡兵华
黎曾权
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Grepow Battery Co Ltd
Original Assignee
Shenzhen Grepow Battery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shenzhen Grepow Battery Co Ltd filed Critical Shenzhen Grepow Battery Co Ltd
Priority to CN202210238512.6A priority Critical patent/CN116780681A/en
Priority to PCT/CN2023/075415 priority patent/WO2023169141A1/en
Publication of CN116780681A publication Critical patent/CN116780681A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
    • 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
    • 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
    • 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
    • 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
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • 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
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • 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
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
    • 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
    • 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
    • H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
    • 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
    • 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
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/50—Charging of capacitors, supercapacitors, ultra-capacitors or double layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Secondary Cells (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The disclosure relates to an automobile battery starting system, which comprises a starting module, a charge and discharge management module, a super capacitor module and a storage battery; the charge and discharge management module is respectively connected with the super capacitor module, the storage battery and the automobile storage battery through signals; the super capacitor module and the storage battery are connected to the input end of the starting module in parallel connection, the super capacitor module and the storage battery are used for selecting to discharge to the starting module, the output end of the starting module is connected with the input end of the automobile storage battery, and the super capacitor module is used for inputting a starting signal to the automobile storage battery to control the starting of the automobile storage battery when receiving the discharging current of the super capacitor module or the storage battery. The method can realize instantaneous starting of the automobile storage battery in extremely cold environments, and is higher in reliability and stability.

Description

Automobile storage battery starting system
Technical Field
The disclosure relates to the technical field of automobile starting control, in particular to an automobile battery starting system.
Background
The automobile battery is usually referred to as an automobile lead-acid battery, and is used for supplying power to start an engine, the working temperature range of the automobile lead-acid battery is-20 ℃ to 50 ℃, and the automobile lead-acid battery cannot normally work and supply power in an extremely cold environment such as-55 ℃. At present, aiming at the problem that the automobile battery can not work in extremely cold environment, the following two solutions are mainly provided:
the first mode is to configure a heating module for the automobile battery, heat the automobile battery through the heating module in extremely cold environment, so that the automobile battery is heated to a temperature range capable of working, but in extremely cold environment, an automobile power supply can not provide sufficient power for the heating module, and the heating efficiency of the heating module in extremely cold environment is extremely low, so that the heating speed of the automobile battery is very slow, the whole heating process is very long in time consumption, and the effect of starting the automobile immediately can not be achieved.
The second mode is to use the super capacitor to supply power for the automobile storage battery, the super capacitor can realize instant discharging in a low-temperature environment and can rapidly supply power for the automobile storage battery, but the super capacitor has the serious problem of 72-hour self-consumption, can not keep long-time energy storage, needs to temporarily charge the super capacitor when starting the automobile, has long charging time, and can not realize all-weather instant starting of the automobile.
In summary, in the prior art, in the extremely cold low-temperature environment, the automobile cannot be started immediately, and inconvenience is brought to the use of the automobile in the extremely cold environment.
Disclosure of Invention
In order to solve the problems in the prior art, the present disclosure is directed to an automobile battery starting system. The method can realize instantaneous starting of the automobile storage battery in extremely cold environments, and is higher in reliability and stability.
The utility model discloses an automobile storage battery starting system, include: the system comprises a starting module, a charge and discharge management module, a super capacitor module and a storage battery;
the charge and discharge management module is respectively connected with the super capacitor module, the storage battery and the automobile storage battery through signals;
the super capacitor module and the storage battery are connected to the input end of the starting module in parallel connection, the super capacitor module and the storage battery are used for selectively discharging to the starting module, the output end of the starting module is connected with the input end of the automobile storage battery, and the super capacitor module or the storage battery is used for inputting a starting signal to the automobile storage battery when receiving the discharging current of the super capacitor module or the storage battery, so as to control the starting of the automobile storage battery;
the input end of the super capacitor module is respectively connected with an external power supply, an automobile storage battery and the storage battery and is used for being connected with external voltage, automobile storage battery voltage or storage battery voltage for charging; the charge and discharge management module is used for controlling an external power supply, an automobile storage battery or the storage battery to charge the super capacitor module.
Preferably, the automobile battery starting system further comprises:
the temperature detection module is in signal connection with the charge and discharge management module, the temperature detection module is used for acquiring the ambient temperature and inputting the ambient temperature into the charge and discharge management module, a first temperature threshold m is preset in the charge and discharge management module, and when the ambient temperature is higher than the first temperature threshold m, the charge and discharge management module controls the storage battery to discharge to the starting module; and when the ambient temperature is equal to or lower than the first temperature threshold value m, the charge and discharge management module controls the super capacitor module to discharge to the starting module.
Preferably, the charge and discharge management module calculates a required charge time of the super capacitor moduleWherein c represents the capacitance of the super capacitor module, v 1 Representing the superCharging power of the stage capacitor module;
the charge and discharge management module obtains the change trend of the ambient temperature in a certain period of time before the current moment according to the change curve of the ambient temperature, and obtains the falling rate v of the ambient temperature when the change trend of the ambient temperature is falling 2 And calculate to obtain a second temperature threshold n=t 1 *v 2 +m; when the ambient temperature drops to the second temperature threshold n, the charge-discharge management module controls an external power supply, an automobile storage battery or the storage battery to charge the super capacitor module
Preferably, when the charge-discharge management module controls the external power supply, the automobile battery or the storage battery to charge the super-capacitor module, firstly detecting whether the external power supply is connected, if so, controlling the external power supply to charge the super-capacitor module, otherwise, further detecting the residual electric quantity of the automobile battery and the storage battery, comparing, and selecting one of the residual electric quantity to charge the super-capacitor module.
Preferably, the automobile battery starting system further comprises;
the starting management module is in communication connection with the charge and discharge management module, and is in signal connection with the starting module.
Preferably, the input end of the storage battery is respectively connected with an external power supply and an automobile storage battery, and is used for being connected with external voltage or automobile storage battery voltage for charging.
Preferably, the super capacitor module comprises a main capacitor and at least one spare capacitor unit connected in parallel with the main capacitor unit, and the charge-discharge management module is used for judging whether the main capacitor unit fails or not when controlling the super capacitor module to discharge to the starting module, if yes, the spare capacitor unit is used for discharging to the starting module, and if not, the main capacitor unit is used for discharging to the starting module.
Preferably, the main capacitor unit includes p serially connected discharge capacitors, and the voltage drop across each discharge capacitor is u 1 、u 2 ...u p Selecting the maximum value and the minimum value to be respectively recorded as u max And u min The method comprises the steps of carrying out a first treatment on the surface of the The charge and discharge management module is preset with a voltage drop threshold u d When u max -u min ≥u d And judging that the main capacitor unit fails, or else, judging that the main capacitor unit does not fail.
Preferably, the charge-discharge management module detects the residual capacity of the automobile storage battery and the storage battery, and when the residual capacity of the automobile storage battery is smaller than a preset storage battery capacity threshold value and the residual capacity of the storage battery is smaller than a preset storage battery capacity threshold value, the storage battery stops charging the super capacitor module and displays low-power alarm information.
Preferably, the storage battery is a lithium battery.
The utility model discloses an automobile storage battery starting system, its advantage lies in, this disclosure connects in starting module's structure through setting up super capacitor module and battery, and charge-discharge management module can select battery or super capacitor module one of them to discharge to starting module, if the battery is used preferentially under normal atmospheric temperature environment for starting module power supply, when being in extremely cold low temperature environment, uses super capacitor module to come for starting module power supply, utilizes super capacitor's instantaneous discharge and low temperature resistant characteristic, realizes automobile storage battery instant start under extremely cold environment. And the super capacitor module has a plurality of charging modes, and when the residual capacitance of the super capacitor module is smaller than a preset capacitance threshold value, the charging and discharging management module controls each module to timely charge the super capacitor module, so that the super capacitor module keeps a high capacitance state, and the discharging requirement during instant starting is met. According to the method, the storage battery and the super capacitor module are arranged, one of the two starting channels can be selected by the charge and discharge management module to start the starting module in a discharging mode, and the super capacitor module is continuously charged, so that the super capacitor module is maintained in a high-capacitance state, the requirement of instantaneous starting of an automobile is met, the reliability and the stability are better, the method can be well applied to extremely cold low-temperature environments, and stable starting of the automobile in the extremely cold low-temperature environments is ensured.
Drawings
Fig. 1 is a schematic structural diagram of an automotive battery starting system according to the present disclosure.
Reference numerals illustrate: the system comprises a 1-starting module, a 2-charge and discharge management module, a 3-super capacitor module, a 4-storage battery, a 5-automobile storage battery, a 6-external power supply and a 7-starting management module.
Detailed Description
As shown in fig. 1, the automobile battery starting system disclosed by the disclosure comprises a starting module, a charge and discharge management module, a super capacitor module and a storage battery.
The charge and discharge management module is a conventional lithium battery charge and discharge management unit which is respectively connected with the super capacitor module, the storage battery and the automobile storage battery through signals and is used for monitoring the residual capacitance and the storage capacity of the super capacitor module, the storage battery and the automobile storage battery and carrying out charge management on the super capacitor module, the storage battery and the automobile storage battery.
The super capacitor module and the storage battery are connected to the input end of the starting module in parallel connection, and are used for discharging to the starting module in a first direction, specifically, the current output end of the storage battery is connected to the input end of the starting module, and the output end of the super capacitor module is also connected to the input end of the starting module, so that the starting module forms two starting paths, namely a starting channel of the storage battery and a starting channel of the super capacitor. The output end of the starting module is connected with the input end of the automobile storage battery and is used for inputting a starting signal to the automobile storage battery when the starting module receives the discharging current of the super capacitor module or the storage battery, so as to control the starting of the automobile storage battery and further enable the engine of the automobile to be started.
The input end of the super capacitor module is respectively connected with an external power supply, an automobile storage battery and a storage battery, so that the super capacitor module can be connected with external voltage, automobile storage battery voltage or storage battery voltage for charging, the charge-discharge management module detects the residual capacitance of the super capacitor module in real time, and when the residual capacitance of the super capacitor module is smaller than a preset capacitance threshold value, such as 75%, the super capacitor module controls the external power supply, the automobile storage battery or the storage battery to charge the super capacitor module.
According to the method, the super capacitor module and the storage battery are arranged in parallel connection with the starting module, the charging and discharging management module can select one of the storage battery or the super capacitor module to discharge to the starting module, if the storage battery is preferentially used for supplying power to the starting module in a normal temperature environment, when the super capacitor module is in an extremely cold low temperature environment, the super capacitor module is used for supplying power to the starting module, and the instantaneous discharging and low temperature resistance characteristics of the super capacitor are utilized to realize the instantaneous starting of the automobile storage battery in the extremely cold environment. And the super capacitor module has a plurality of charging modes, and when the residual capacitance of the super capacitor module is smaller than a preset capacitance threshold value, the charging and discharging management module controls each module to timely charge the super capacitor module, so that the super capacitor module keeps a high capacitance state, and the discharging requirement during instant starting is met. According to the method, the storage battery and the super capacitor module are arranged, one of the two starting channels can be selected by the charge and discharge management module to start the starting module in a discharging mode, and the super capacitor module is continuously charged, so that the super capacitor module is maintained in a high-capacitance state, the requirement of instantaneous starting of an automobile is met, the reliability and the stability are better, the method can be well applied to extremely cold low-temperature environments, and stable starting of the automobile in the extremely cold low-temperature environments is ensured.
Further, in this embodiment, the starting system of the automobile battery further includes:
the temperature detection module can be a temperature sensor and is arranged on the body of the automobile for detecting and acquiring the environmental temperature. The temperature detection module is in signal connection with the charge and discharge management module 2 and is used for inputting the detected temperature signal into the charge and discharge management module 2. In a specific embodiment, the first temperature threshold m may be set to-20 ℃, and when the ambient temperature is higher than-20 ℃, the battery 4 may normally perform a discharging action when representing the current ambient temperature of the automobile, so that the charging/discharging management module 2 controls the battery 4 to discharge to the starting module 1, so as to save the power consumption of the system. When the ambient temperature is equal to or lower than-20 ℃, the temperature representing the current environment of the automobile is lower, and in order to ensure the starting stability of the automobile, the charge and discharge management module 2 controls the super capacitor module 3 to discharge to the starting module 1, and the discharge starting process is stably carried out by utilizing the characteristic that the super capacitor is stable in a low-temperature environment. By setting the first temperature threshold value m, the storage battery 4 is used for normally discharging when the ambient temperature is higher, so that the power consumption of the system can be saved, and the super capacitor module 3 is used for discharging and starting under the low-temperature environment, so that the stable operation of discharging and starting is ensured.
In order to save the power consumption of the system, the super capacitor module 3 is in a closed state in an environment with higher temperature, and the super capacitor module 3 needs a certain time to be charged, so as to meet the use requirement of the instant starting of the automobile, the super capacitor module 3 needs to be charged in advance according to the environmental temperature.
In order to solve the problem of pre-charging of the super capacitor module 3, in this embodiment, the charge/discharge management module 2 calculates the required charging time of the super capacitor module 3Wherein c represents the capacitance of the super capacitor module 3, v 1 Represents the charging power and the charging time t of the super capacitor module 3 1 Indicating the time required for the supercapacitor module 3 to fill from empty to full.
The charge-discharge management module 2 obtains a change trend of the ambient temperature in a certain period of time before the current time, for example, the change trend of the ambient temperature in 60 minutes before the current time, wherein the change trend mainly reflects that the ambient temperature is increased or decreased in the period of time, the change trend can be obtained by subtracting a difference value of the temperature at the starting time from the temperature at the current time, when the difference value is positive, the change trend indicates that the ambient temperature is increased, when the difference value is 0, the change trend indicates that the ambient temperature is approximately unchanged, and when the difference value is negative, the change trend indicates that the ambient temperature is decreased.
Obtaining the decrease rate v of the ambient temperature only when the change trend of the ambient temperature is decreasing 2 The rate of decrease v 2 The average rate of temperature decrease over the period of time may be obtained by dividing the difference between the current time point temperature minus the starting time point temperature by the period of time.
Then calculate to obtain a second temperature threshold n=t 1 *v 2 +m; when the ambient temperature drops to the second temperature threshold n, the charge/discharge management module 2 controls the external power supply 6, the automobile battery 5 or the storage battery 4 to charge the super capacitor module 3.
According to the charging time t of the super capacitor module 3 1 Estimating the rate of continuous decrease v if the ambient temperature is maintained 2 When the environmental temperature is reduced to the first temperature threshold value m, the super capacitor module 3 is in a full state, so that the discharge starting action can be stably completed.
Through the above process, the super capacitor module 3 can be kept closed when the ambient temperature is high so as to reduce the power consumption of the system, and the super capacitor module 3 is automatically charged when the ambient temperature is reduced to the second temperature threshold value n, so that the super capacitor module 3 is ensured to be in a full state when the ambient temperature is reduced to the first temperature threshold value m. The system power consumption is saved, and the requirement of instant starting of the automobile can be met.
Further, in this embodiment, when the charge/discharge management module 2 controls the external power supply 6, the automobile battery 5 or the storage battery 4 to charge the super capacitor module 3, it first detects whether the external power supply 6 is connected, if so, it controls the external power supply 6 to charge the super capacitor module 3, otherwise, it further detects the residual electric power of the automobile battery 5 and the storage battery 4 and compares them, and selects one of the residual electric power to charge the super capacitor module 3. When the super capacitor module 3 is charged, the external power supply 6 is preferably used for charging, and when the external power supply 6 is not connected, the rest power is selected to be charged, so that the phenomenon of low electric quantity of the rest modules is avoided. In a specific embodiment, when the remaining amounts of the automobile battery 5 and the storage battery 4 are equal, the automobile battery 5 is preferably used for charging.
Further, in this embodiment, the starting system of the automobile battery further includes:
the starting management module is in communication connection with the charge and discharge management module, is in signal connection with the starting module, and is in communication with the charge and discharge management module, and the operation of the starting module is controlled according to the communication signals, so that the starting module is controlled stably and responds rapidly.
Further, in this embodiment, the input end of the storage battery is connected to an external power source and an automobile battery respectively, and is used for charging by accessing an external voltage or an automobile battery voltage, so that the storage battery has multiple charging modes.
Further, in this embodiment, the super capacitor module includes a main capacitor and at least one spare capacitor connected in parallel with the main capacitor, when the charge-discharge management module detects that the main capacitor is damaged or fails, and when the super capacitor module is needed to be used for powering and starting the starting module at this time, the charge-discharge management module switches to the spare capacitor to discharge for the starting module, so that the starting module discharges in time to start the automobile battery. The backup capacitor can improve the stability of the super capacitor module, so that the overall stability and reliability of the system are improved.
Further, in this embodiment, the main capacitor unit includes p serially connected discharge capacitors, and the voltage drop at two ends of each discharge capacitor is u 1 、u 2 ...u p Selecting the maximum value and the minimum value to be respectively recorded as u max And u min The method comprises the steps of carrying out a first treatment on the surface of the A voltage drop threshold u is preset in the charge and discharge management module 2 d When u max -u min ≥u d And judging that the main capacitor unit fails, and if not, judging that the main capacitor unit does not fail. In a particular embodiment, the pressure drop threshold u d May be set to 0.5v. When each discharging capacitor is stored, voltage drop is generated at two ends of each discharging capacitor, and the voltage drop distribution of each discharging capacitor can reflect the working stability of the main capacitor unit, so that in the embodiment, the main capacitor unit is judged to have a fault phenomenon when the difference between the maximum value and the minimum value of the voltage drop is detected and is larger than 0.5v, otherwise, the main capacitor unit is judged to not have a fault, and the main capacitor unit can be normally used. The process can be convenient for judging whether the main capacitor unit is in fault or not, and the standby capacitor unit is started to discharge in time when the main capacitor unit is in fault so as to ensure the stability of the discharge starting process.
Further, in this embodiment, the charge/discharge management module detects the remaining power of the vehicle battery and the storage battery, and when the remaining power of the vehicle battery is smaller than a preset battery power threshold, for example, 10%, and the remaining power of the storage battery is smaller than the preset battery power threshold, for example, 20%, the storage battery stops charging the super capacitor module, and displays low power alarm information. The process can reduce the charging loss under the condition of low electric quantity of the storage battery and the automobile storage battery, and can give an alarm in time.
Further, in this embodiment, the storage battery is a lithium battery, and the lithium battery has the advantages of stable charge and discharge and good low-temperature performance.
In the description of the present disclosure, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present disclosure and simplify the description, and without being otherwise described, these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be configured and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present disclosure.
It will be apparent to those skilled in the art from this disclosure that various other changes and modifications can be made which are within the scope of the invention as defined in the claims.

Claims (10)

1. An automotive battery starting system, comprising: the system comprises a starting module, a charge and discharge management module, a super capacitor module and a storage battery;
the charge and discharge management module is respectively connected with the super capacitor module, the storage battery and the automobile storage battery through signals;
the super capacitor module and the storage battery are connected to the input end of the starting module in parallel connection, the super capacitor module and the storage battery are used for selectively discharging to the starting module, the output end of the starting module is connected with the input end of the automobile storage battery, and the super capacitor module or the storage battery is used for inputting a starting signal to the automobile storage battery when receiving the discharging current of the super capacitor module or the storage battery, so as to control the starting of the automobile storage battery;
the input end of the super capacitor module is respectively connected with an external power supply, an automobile storage battery and the storage battery and is used for being connected with external voltage, automobile storage battery voltage or storage battery voltage for charging; the charge and discharge management module is used for controlling an external power supply, an automobile storage battery or the storage battery to charge the super capacitor module.
2. The automotive battery starting system of claim 1, further comprising:
the temperature detection module is in signal connection with the charge and discharge management module, the temperature detection module is used for acquiring the ambient temperature and inputting the ambient temperature into the charge and discharge management module, a first temperature threshold m is preset in the charge and discharge management module, and when the ambient temperature is higher than the first temperature threshold m, the charge and discharge management module controls the storage battery to discharge to the starting module; and when the ambient temperature is equal to or lower than the first temperature threshold value m, the charge and discharge management module controls the super capacitor module to discharge to the starting module.
3. The vehicle battery starting system of claim 2, wherein the charge and discharge management module calculates a desired charge time for the super capacitor moduleWherein c represents the capacitance of the super capacitor module, v 1 Representing the charging power of the super capacitor module;
the charge and discharge management module obtains the change trend of the ambient temperature in a certain period of time before the current moment according to the change curve of the ambient temperature, and obtains the falling rate v of the ambient temperature when the change trend of the ambient temperature is falling 2 And calculate to obtain a second temperature threshold n=t 1 *v 2 +m; when the ambient temperature decreases to the second temperatureAnd when the threshold value is n, the charge-discharge management module controls an external power supply, an automobile storage battery or the storage battery to charge the super capacitor module.
4. The system of claim 3, wherein the charge/discharge management module is configured to control whether an external power source is connected to the super capacitor module when the external power source, the vehicle battery or the storage battery is charged, and if so, control the external power source to charge the super capacitor module, otherwise, further detect the remaining power of the vehicle battery and the storage battery, compare the detected remaining power, and select one of the detected remaining power to charge the super capacitor module.
5. The automotive battery starting system of claim 1, further comprising;
the starting management module is in communication connection with the charge and discharge management module, and is in signal connection with the starting module.
6. The automobile battery starting system according to claim 1, wherein the input end of the storage battery is connected with an external power supply and the automobile battery respectively, and is used for being connected with external voltage or being charged by the voltage of the automobile battery.
7. The system of claim 1, wherein the super capacitor module comprises a main capacitor and at least one backup capacitor unit connected in parallel with the main capacitor unit, and the charge and discharge management module is configured to determine whether the main capacitor unit fails when the super capacitor module is controlled to discharge to the starting module, and if yes, to discharge to the starting module using the backup capacitor unit, and if not, to discharge to the starting module using the main capacitor unit.
8. The vehicle battery starting system of claim 7, wherein the main capacitor unit includes p serially connected discharge capacitors, each of whichThe voltage drop at the two ends of the discharge capacitor is u respectively 1 、u 2 ...u p Selecting the maximum value and the minimum value to be respectively recorded as u max And u min The method comprises the steps of carrying out a first treatment on the surface of the The charge and discharge management module is preset with a voltage drop threshold u d When u max -u min ≥u d And judging that the main capacitor unit fails, or else, judging that the main capacitor unit does not fail.
9. The system of claim 1, wherein the charge and discharge management module detects a remaining power of the vehicle battery and the battery, and when the remaining power of the vehicle battery is less than a preset battery power threshold and the remaining power of the battery is less than the preset battery power threshold, the battery stops charging the super capacitor module and displays a low power alarm message.
10. The automotive battery starting system of claim 1 wherein the battery is a lithium battery.
CN202210238512.6A 2022-03-11 2022-03-11 Automobile storage battery starting system Pending CN116780681A (en)

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