[go: up one dir, main page]

CN119482882A - Jumpering method and jumpering system - Google Patents

Jumpering method and jumpering system Download PDF

Info

Publication number
CN119482882A
CN119482882A CN202411505320.2A CN202411505320A CN119482882A CN 119482882 A CN119482882 A CN 119482882A CN 202411505320 A CN202411505320 A CN 202411505320A CN 119482882 A CN119482882 A CN 119482882A
Authority
CN
China
Prior art keywords
battery
power
voltage
converter
charging
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
CN202411505320.2A
Other languages
Chinese (zh)
Inventor
罗达逸
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.)
Eve Energy Co Ltd
Original Assignee
Eve Energy 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 Eve Energy Co Ltd filed Critical Eve Energy Co Ltd
Priority to CN202411505320.2A priority Critical patent/CN119482882A/en
Publication of CN119482882A publication Critical patent/CN119482882A/en
Pending legal-status Critical Current

Links

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
    • H02J7/34—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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • 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
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • 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
    • H02J7/00304—Overcurrent protection
    • 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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

The embodiment of the application discloses a power-on method and a power-on system. The power up system includes a first battery configured to power the vehicle, a second battery, and a power up power source. The power-on method comprises the steps of charging the first battery by using a power-on power supply if the first battery of the vehicle is in a power-deficient state, and charging the first battery by using the second battery if the total internal voltage of the first battery reaches a preset first voltage, so that the problem of current impact on the first battery caused by larger charging current of the first battery due to larger charging current of the second battery in the process of charging the first battery by using the second battery can be avoided, and meanwhile, the problem of longer charging time of the first battery due to small current charging can be solved.

Description

Power-on method and power-on system
Technical Field
The application relates to the technical field of batteries, in particular to a power-on method and a power-on system.
Background
The 12V lead-acid battery has the advantages of high failure rate, low energy density, short service life and the like, while the 12V lithium battery has the advantages of portability, long service life, high energy density and the like. Therefore, the use of 12V lithium batteries in automobiles is increasingly replacing conventional lead acid batteries.
In the related art, the charge and discharge efficiency of a 12V lithium battery at a low temperature is low, resulting in a small charge amount, and if the vehicle is placed for a long time, the battery is inevitably caused to run out of power, thereby causing the vehicle to be unable to start.
Disclosure of Invention
Aiming at the defects of the prior art, the application provides a power-on method and a power-on system, which can not only avoid the problem of current impact on a first battery caused by larger output voltage of a second battery in the process of charging the first battery by the second battery, but also solve the problem of longer charging time of the first battery caused by small current charging.
In order to solve the above problems, in a first aspect, the present application provides a power-on method applied to a power-on system including a first battery configured to supply power to a vehicle, a second battery, and a power-on power source, the power-on method including:
If the first battery of the vehicle is in a power shortage state, charging the first battery by using a power-on power supply;
And if the total internal voltage of the first battery reaches a preset first voltage, charging the first battery by using the second battery.
Further, in the power-on method provided by the present application, charging the first battery with the power-on power supply includes:
if the power-on power supply is connected to the power-on system, the hard wire wakes up the battery management system of the first battery;
in a state where the battery management system is awakened, the first battery is charged by using the power supply.
Further, in the power-on method provided by the application, the power-on system further comprises a current limiting module, and the current limiting module is arranged between the power-on power supply and the first battery;
wherein, adopt to take electric power supply to charge to first battery, include:
the output current of the power supply is adjusted to be preset current by adopting a current limiting module;
and carrying out constant current charging on the first battery according to the preset current.
Further, in the power-on method provided by the application, the power-on system further comprises a converter, and the converter is arranged between the second battery and the first battery;
Wherein before if the internal total voltage of the first battery reaches the preset first voltage, the method further comprises:
The battery management system adopting the first battery collects the internal total voltage and adjusts the output voltage of the converter according to the internal total voltage.
Furthermore, in the power-on method provided by the present application, before adjusting the output voltage of the converter according to the internal total voltage, the method further includes:
detecting whether the converter is started normally by adopting a battery management system;
If the converter is started normally, the battery management system sends a message of the total internal voltage to the converter.
Furthermore, in the power-on method provided by the present application, after adjusting the output voltage of the converter according to the internal total voltage, the method further includes:
Determining a voltage difference between the internal total voltage and the output voltage;
it is determined whether the internal total voltage reaches the first voltage according to the voltage difference.
Further, in the power-on method provided by the present application, if the total internal voltage of the first battery reaches a preset first voltage, charging the first battery with the second battery includes:
If the voltage difference is within a preset voltage range, determining that the total internal voltage reaches a first voltage;
according to the converter, the first battery is charged by the second battery.
Further, in the power-on method provided by the application, the power-on system further comprises a charge-discharge switch, wherein the charge-discharge switch is arranged between the first battery and the second battery, and the charge-discharge switch is configured to control charge and discharge of the first battery;
Wherein, adopt the second battery to charge first battery, include:
and closing a charge-discharge switch by adopting a battery management system to realize that the second battery charges the first battery.
In a second aspect, the present application also provides a power-on system, which includes:
a first battery configured to supply low voltage power to the vehicle;
One end of the second battery is electrically connected with one end of the first battery, and the other end of the second battery is electrically connected with the other end of the first battery;
the first end of the power-on power supply is electrically connected with one end of the first battery, and the second end of the power-on power supply is electrically connected with the other end of the first battery;
When the first battery is in a power shortage state, the power-on power supply is configured to charge the first battery so that the internal total voltage of the first battery is a preset first voltage, and when the internal total voltage of the first battery reaches the first voltage, the second battery is configured to charge the first battery.
Further, in the power-up system provided by the application, the power-up system further comprises a current limiting module, one end of the current limiting module is electrically connected with the power-up power supply, the other end of the current limiting module is electrically connected with one end of the first battery, the current limiting module is configured to adjust the output current of the power-up power supply to a preset current, or/and,
The power system further comprises a converter, wherein a first end of the converter is electrically connected with one end of the first battery, a second end of the converter is electrically connected with the other end of the first battery, a third end and a fourth end of the converter are respectively electrically connected with two ends of the second battery, and the converter is configured to convert output voltage of the second battery into first voltage.
The application provides a power-on method, which is applied to a power-on system, wherein the power-on system comprises a first battery, a second battery and a power-on power supply, the first battery is configured to supply power to a vehicle, when the first battery is in a power-shortage state, the power-on power supply can be used for charging the first battery preferentially, and after the total internal voltage of the first battery reaches a first voltage, the second battery is used for charging the first battery, so that the problem that the current impact is caused to the first battery due to the fact that the charging current of the second battery for charging the first battery is large in the process of charging the first battery can be avoided, and meanwhile, the problem that the charging time of the first battery is long due to small-current charging can be solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic block diagram of a power-on system provided by an embodiment of the present application;
Fig. 2 is a schematic flow chart of a power-on method according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
In addition, in the present application, unless explicitly stated or limited otherwise in the examples, the terms "mounted," "connected," and "fixed" as used in the examples should be interpreted broadly, e.g., the connection may be a fixed connection, a removable connection, or an integral body, and it may be understood that the connection may be a mechanical connection, an electrical connection, or the like, or of course, the connection may be direct, or indirect, through an intermediary, or may be a communication between two elements, or an interaction relationship between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific embodiments.
The embodiment of the application provides a power-on method and a power-on system.
For easy understanding, the power-on system is described first, and the power-on method is described in detail on the basis of the power-on system.
Referring to fig. 1, fig. 1 is a schematic block diagram of a power-up system according to an embodiment of the present application. As shown in fig. 1, the present application provides a power up system, which includes:
a first battery 110, the first battery 110 configured to low-voltage power the vehicle;
The second battery 120, one end of the second battery 120 is electrically connected with one end of the first battery 110, and the other end of the second battery 120 is electrically connected with the other end of the first battery 110;
Wherein, when the first battery 110 is in a power deficient state, the second battery 120 is configured to charge the first battery 110.
In the present embodiment, one end of the second battery 120 is electrically connected to one end of the first battery 110 to form a first terminal a, and the other end of the second battery 120 is electrically connected to the other end of the first battery 110 to form a second terminal B. The first battery 110 may be a 12V low voltage lithium battery that may be configured to low voltage power the vehicle for starting the vehicle and to provide auxiliary power to the vehicle.
Specifically, the vehicle may be divided into a low-voltage battery vehicle side, which may be understood as a side that provides a low-voltage power source to the vehicle, and a whole vehicle side, which may be understood as a side that controls the vehicle and provides a high-voltage power source to the vehicle. The vehicle side of the vehicle may be provided with a low power network (Low Power Network, LPN), and the first battery 110 may provide power for the low power network, so as to ensure that the low power network can control the vehicle.
The second battery 120 may be a high voltage lithium battery that may power the vehicle. Meanwhile, the second battery 120 can charge the first battery 110 when the first battery 110 is in a power shortage state, so that the situation that the vehicle cannot be started can be avoided, and normal use of the vehicle is ensured.
In some embodiments, as shown in fig. 1, the power-on system further includes a converter 130, wherein a first end of the converter 130 is electrically connected to one end of the first battery 110, a second end of the converter 130 is electrically connected to the other end of the first battery 110, a third end and a fourth end of the converter 130 are respectively connected to two ends of the second battery 120, and the converter 130 is configured to convert an output voltage of the second battery 120 into a preset first voltage, and the first voltage is configured to be a charging voltage of the first battery 110.
Specifically, the converter 130 may be a direct current DC/DC converter that may convert the output voltage of the second battery 120. The second battery 120 may be a high-voltage battery pack that may power the vehicle, and the output voltage of the second battery 120 is far greater than the charging voltage of the first battery 110, and the second battery 120 cannot directly charge the first battery 110.
Therefore, in the present application, a direct current DC/DC converter may be disposed between the first battery 110 and the second battery 120, the first end and the second end of the converter 130 are electrically connected to the first terminal a and the second terminal B, respectively, and the third end and the fourth end of the converter 130 are connected to two ends of the second battery 120, respectively, so as to convert the output voltage of the second battery 120 into the charging voltage of the first battery 110, thereby charging the first battery 110 in a power shortage state.
In some embodiments, as shown in fig. 1, the power-up system further includes a current limiting module 140, one end of the current limiting module 140 is electrically connected to one end of the first battery 110, the other end of the current limiting module 140 is electrically connected to the first terminal a, and when the first battery 110 is in a power-deficient state, the current limiting module 140 is configured to adjust the charging current of the first battery 110 to a preset current.
Specifically, since the second battery 120 may generate a large current when charging the first battery 110 in the power shortage state, the first battery 110 cannot withstand the large current when in the serious power shortage state, and the first battery 110 is impacted. Therefore, the current limiting module 140 may be disposed between the first battery 110 and the second battery 120, and when the first battery 110 is in the power shortage state, the current limiting module 140 may be used to limit the charging current of the first battery 110 to a preset current, and in particular, the output current of the second battery 120 may be limited to a preset current, so as to realize constant current charging of the battery in the power shortage state. The current limiting module 140 may be a DC/DC converter, which may perform DC conversion on the output current of the second battery 120, and the current limiting module 140 may be an MPQ4232.
It can be understood that, in the power-up system provided by the present application, when the second battery 120, the converter 130 and the current limiting module 140 are used to charge the first battery 110, the converter 130 can convert the output voltage of the second battery 120 and perform current conversion again through the current limiting module 140, so as to implement constant current charging for the first battery 110 in a power-deficient state.
Further, in some embodiments, as shown in fig. 1, the power-up system further includes a power-up power supply 160, where the power-up power supply 160 is electrically connected to the first terminal a and the second terminal B, respectively, and when the first battery 110 is in the power-deficient state, the power-up power supply 160 is configured to charge the first battery 110 through the current-limiting module 140, so that the total internal voltage of the first battery 110 reaches the preset second voltage.
In the present embodiment, the second voltage may be the first voltage mentioned above. Specifically, when the first battery 110 is in the power-deficient state, if the second battery 120 cannot charge the first battery 110, for example, the second battery 120 is also in the power-deficient state, the power-up power source 160 may be connected to the first terminal a and the second terminal B at this time, and the power-up power source 160 may perform constant current charging on the first battery 110 in the power-deficient state through the current limiting module until the internal total voltage of the first battery 110 reaches the preset second voltage.
Further, in some embodiments, when the first battery is in a power deficient state and the total internal voltage of the first battery is greater than or equal to the second voltage, the second battery is configured to charge the first battery.
Specifically, when the second battery 120 employs the inverter 130 and the current limiting module 140 to charge the first battery 110 in the power-deficient state, the charging current of the first battery 110 may be 2A, and the charging current of 2A may cause the first battery 110 to take a long time to be fully charged. Similarly, the power supply 160 may perform constant current charging on the first battery 110 in the power-deficient state through the current limiting module, and the charging current of the first battery 110 may be 2A, which results in that the first battery 110 needs a long time to be fully charged.
In order to shorten the charging time of the first battery 110 in the power shortage state, the present application may firstly use the power-up supply 160 and the current-limiting module 140 to perform constant current charging on the first battery 110 until the internal total voltage of the first battery 110 reaches the preset second voltage, and then use the second battery 120 and the inverter 130 to perform constant voltage charging on the first battery at this time, so as to shorten the charging time of the first battery 110 until the first battery 110 is in the full state.
The power supply 160 may be provided by a power bank, the power bank may provide 9 v-16 v dc power, and the power bank is similar to a charger for charging a mobile phone. Meanwhile, the power supply 160 may also be a 220V ac power supply, which may be converted by the current limiting module 140, so as to charge the first battery 110 with a preset current.
It should be noted that, the first battery referred to in the present application may be understood as a battery pack, and the total internal voltage of the first battery may be understood as the sum of voltages of all the battery cells in the first battery.
Further, in some embodiments, as shown in fig. 1, the power-up system is further provided with a charge-discharge switch 150, one end of the charge-discharge switch 150 is electrically connected to one end of the first battery 110 and one end of the current-limiting module 140, the other end of the charge-discharge switch 150 is electrically connected to the second terminal B, when the charge-discharge switch 150 is turned off, the power-up source 160 is configured to charge the first battery 110 through the current-limiting module 140, and when the charge-discharge switch is turned off, the second battery 120 is configured to charge the first battery 110 through the charge-discharge switch.
In this embodiment, the charge/discharge switch 150 is a switch for charging/discharging the first battery 110, and may be a MOS transistor. When the first battery 110 is in the power-deficient state, if the power-on power supply 160 is used to charge the first battery 110 and the charge-discharge switch 150 is in the off state, if the second battery 120 is used to charge the first battery 110, the current-limiting module 140 exits the current-limiting mode, and the charge-discharge switch 150 is closed, the converter 130 can convert the output voltage of the second battery 120 into the charging voltage of the first battery 110 and directly charge the first battery 110 through the charge-discharge switch 150, so that the impact of the first battery 110 caused by high current can be avoided.
In some embodiments, the power-on system further includes a battery management system configured to manage the first battery 110.
In this embodiment, the battery management system may collect and manage the voltage, current, temperature, etc. of the first battery 110, and may also control the on/off of the charge/discharge switch 150 on the battery side. The first battery 110 and the battery management may form one battery pack.
Further, in some embodiments, the battery management system is further configured to communicatively connect with the second battery 120.
In this embodiment, the battery management system may be in communication connection with the second battery 120, the converter 130 and the current limiting module 140 by using the CAN network, so that when the first battery 110 is in a power-deficient state, the power-up power supply 160, the converter 130, the current limiting module 140 and the second battery 120 are adopted to complete the power supply to the first battery 110 in a shorter time without generating current impact to the first battery 110.
Further, in some embodiments, the battery management system is configured to be in a sleep state when the first battery 110 is in a power deficient state, or is configured to be in an operational state when the first battery 110 is in a power deficient state.
In the present embodiment, when the first battery 110 is in the power shortage state, the battery management system of the first battery 110 may be configured to be in the sleep state. When the first battery in the power-deficient state needs to be powered up, the battery management system of the first battery needs to be awakened, and after the battery management system of the first battery is awakened, the second battery 120 or/and the power-on power supply is adopted to power up the first battery 110.
When the first battery 110 is in a power deficient state, the battery management system of the first battery 110 may be configured to be in an operating state. When the first battery in the power shortage state needs to be powered up, the battery management system of the first battery is firstly dormant, then the battery management system of the first battery is awakened, and after the battery management system of the first battery is awakened, the second battery 120 or/and the power supply is/are adopted to power up the first battery 110.
When the first battery 110 is in a power deficient state, the battery management system of the first battery 110 may be configured to be in an operating state. When the first battery in the power shortage state needs to be supplied with power, the second battery 120 and/or the power supply can be directly adopted to supply power to the first battery 110.
In some embodiments, the power tap 160 is electrically connected to the first terminal a via a first power tap and to the second terminal B via a first power tap.
Specifically, the battery management system of the first battery is further configured to detect whether looseness occurs between the first power-on clamp and the first terminal A and between the second power-on clamp and the second terminal B, so that the situation that power-on failure of the power-on system due to looseness of the power-on clamp can be timely detected, and reliability of the power-on system is improved.
It can be understood that the power-on system provided by the foregoing embodiment is merely an example, and the power-on system described in the embodiment of the present application is for more clearly describing the technical solution of the embodiment of the present application, and does not constitute a limitation on the technical solution provided by the embodiment of the present application, and those skilled in the art can know that, with the evolution of the system and the appearance of a new service scenario, the technical solution provided by the embodiment of the present application is equally applicable to similar technical problems. The following will describe in detail.
The following description of the embodiments is not intended to limit the preferred embodiments. The following describes the power-on method in detail.
In the related art, when a power shortage occurs in a 12V low-voltage lithium battery (first battery) of a vehicle, a high-voltage battery pack (second battery) of the vehicle is generally used to charge the 12V low-voltage lithium battery. However, when the output voltage of the high-voltage battery pack is converted into the charging voltage of the first battery by the converter, the charging current output by the converter is larger, which may impact the first battery and damage the first battery. A current limiting module is disposed between the inverter and the first battery. However, when the current limiting module is added, the time taken for the first battery to complete charging is as long as several hours, and the safety redundancy requirement of the vehicle cannot be satisfied.
Therefore, the application provides a power-on method, which can not only avoid the problem of current impact on the first battery caused by larger charging current of the second battery for charging the first battery in the process of charging the first battery by the second battery, but also solve the problem of longer charging time of the first battery caused by small current charging.
Referring to fig. 2, fig. 2 is a flow chart of a power-on method according to an embodiment of the application. As shown in fig. 2, the present application provides a power-on method applied to a power-on system including a first battery configured to supply power to a vehicle, a second battery, and a power-on power source. Specifically, as shown in FIG. 2, the power-on method includes steps S110 and S120.
And S110, if the first battery of the vehicle is in a power shortage state, charging the first battery by using a power-on power supply.
In this embodiment, the power supply can be provided by the power bank, the power bank can provide 9V-16V direct current power supply, and the power bank is similar to a power bank for charging a mobile phone. Meanwhile, the power supply can be a 220V alternating current power supply, and the power supply can be converted through the current limiting module so as to realize constant current charging of the first battery by adopting preset current.
When the power supply is used for constant current charging of the first battery, a current limiting module is not required to be arranged between the power supply and the first battery, and only the output power supply of the power supply is required to be a preset current. The preset current may be 2A.
In some embodiments, the step S110 includes the steps of waking up the battery management system of the first battery by hard wire if the power-up source is connected to the power-up system, and charging the first battery with the power-up source while the battery management system is in a wake-up state.
In this embodiment, when the first battery is in the power-deficient state, the battery management system of the first battery is in the sleep state. If the power-on power supply is adopted to charge the first battery in a constant current manner, after the power-on power supply is connected to the first terminal and the second terminal, the battery management system of the first battery is awakened due to voltage change at the second terminal, so that the power-on power supply is adopted to charge the first battery in a constant current manner after the battery management system of the first battery is awakened, and the battery management system can monitor and manage the first battery in a charged state. The first terminal is grounded, and the second terminal is electrically connected with the other end of the first battery.
In some embodiments, the power system further comprises a current limiting module, wherein the current limiting module is arranged between the power supply and the first battery, and the step S110 further comprises the steps of adjusting the output current of the power supply to a preset current by adopting the current limiting module, and performing constant-current charging on the first battery according to the preset current.
In this embodiment, one end of the current limiting module is electrically connected to the first end of the power supply, the other end of the current limiting module is electrically connected to one end of the first battery, and the current limiting module is configured to adjust the output current of the power supply to a preset current.
Specifically, the current limiting module can be in communication connection with the battery management system of the first battery, when the battery management system of the first battery is awakened due to the access of the power supply, the current limiting module can be in communication, and the current limiting module is controlled to convert the output current of the power supply into a preset current so as to realize constant current charging of the first battery in a power shortage state by adopting the preset current. Wherein the current limiting module is in fact also a converter, only the converter is configured for dc conversion.
And S120, if the total internal voltage of the first battery reaches a preset first voltage, charging the first battery by using the second battery.
Specifically, the battery management system of the first battery is in an awakened state in the process of charging the first battery in the power shortage state by the power-on power supply, so that the battery management system of the first battery can monitor the internal total voltage of the first battery, and then can control the second battery to charge the first battery after monitoring that the internal total voltage of the first battery reaches the preset first voltage, at the moment, the charging current of the second battery to the first battery cannot impact the first battery, the charging speed of the first battery can be accelerated, the charging time of the first battery is shortened, and the charging efficiency of the first battery is improved.
The internal total voltage refers to the sum of all cell voltages in the first battery, and the internal total voltage can reflect the overall state of the interior of the first battery. In lithium batteries, the cells are typically connected in series, so the total voltage is the sum of the voltages of the individual cells.
In some embodiments, the power system further comprises a converter arranged between the second battery and the first battery, and before step S120, the power system further comprises the steps of collecting the total internal voltage by the battery management system of the first battery and adjusting the output voltage of the converter according to the total internal voltage.
Specifically, the converter may be a direct current DC/DC converter, which may convert the output voltage of the second battery into the charging voltage of the first battery. The first end of the converter is electrically connected with one end of the first battery, the second end of the converter is electrically connected with the other end of the first battery, the third end of the converter is electrically connected with the first terminal, the other end of the converter is electrically connected with the second terminal, and the converter is configured to convert the output voltage of the second battery into a preset first voltage.
In this embodiment, after the power supply is connected to the first terminal and the second terminal, the converter may be started, and after the converter completes normal startup, a communication connection may be established with the battery management system of the first battery. Meanwhile, in the constant current charging process of the first battery, the battery management system of the first battery can detect the total internal voltage of the first battery and feed the detected total internal voltage back to the converter, so that the converter can adjust the output voltage of the converter to rapidly charge the first battery.
Further, in some embodiments, before adjusting the output voltage of the converter according to the internal total voltage, the method further comprises the steps of detecting whether the converter is normally started by using a battery management system, and if the converter is normally started, sending a message of the internal total voltage to the converter by using the battery management system.
In this embodiment, after the converter completes normal start, the battery management system of the first battery may actively communicate with the converter to detect whether the converter is started normally, if the battery management system of the first battery detects that the converter is started normally, the monitored total internal voltage of the first battery may be sent to the converter in the form of a message, and after the converter receives the message, the converter may adjust the output voltage of the converter according to the total internal voltage of the first battery, so as to implement rapid charging of the first battery without current impact on the first battery.
Further, in some embodiments, after adjusting the output voltage of the converter according to the internal total voltage, the method further comprises the steps of determining a voltage difference between the internal total voltage and the output voltage, and determining whether the internal total voltage reaches the first voltage according to the voltage difference.
In this embodiment, after the converter adjusts the output voltage according to the internal total voltage of the first battery, the adjusted output voltage can be fed back to the battery management system of the first battery, and after the battery management system of the first battery receives the feedback of the converter, the voltage difference between the internal total voltage and the output voltage can be determined according to the internal total voltage and the output voltage, and then whether the internal total voltage of the first battery reaches the first voltage can be determined according to the voltage difference, so that the second battery can be used for rapidly charging the first battery.
In some embodiments, step S120 includes determining that the total internal voltage reaches the first voltage if the voltage difference is within a predetermined voltage range, and charging the first battery with the second battery according to the inverter.
In this embodiment, the voltage range may be preset, which may be between-0.6V and 0.6V. When the voltage difference is in a preset voltage range, the current limiting module can be controlled to exit the current limiting mode, the second battery is adopted, and the first battery is rapidly charged through the converter, so that the charging time of the first battery in a power shortage state is shortened, and the charging efficiency of the first battery is improved.
In some embodiments, the power system further comprises a charge-discharge switch disposed between the first battery and the second battery, the charge-discharge switch configured to control charge and discharge of the first battery, and step S120 comprises closing the charge-discharge switch with the battery management system to charge the first battery by the second battery.
In this embodiment, the charge-discharge switch is connected in parallel with the current limiting module. When the converter is started normally and can charge the first battery, the battery management system of the first battery can control the charge-discharge switch to be closed and control the current limiting module to exit the current limiting mode, and at the moment, the second battery can pass through the converter and pass through the charge-discharge switch to charge the first battery rapidly on the premise of not generating current impact on the first battery, so that the charging efficiency of the first battery can be improved.
According to the power-on method, when the first battery is in the power-shortage state, the power-on power supply is configured to charge the first battery so that the total internal voltage of the first battery is the preset first voltage, and when the total internal voltage of the first battery reaches the first voltage, the second battery is configured to charge the first battery with the second voltage, so that the problem that the current impact is caused to the first battery due to the fact that the charging current of the second battery for charging the first battery is large in the process of charging the first battery by the second battery can be avoided, and meanwhile, the problem that the charging time of the first battery is long due to the fact that the charging current of the second battery is small can be solved.
While the application has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the application. Therefore, the protection scope of the application is subject to the protection scope of the claims.

Claims (10)

1. The power-on method is applied to a power-on system, the power-on system comprises a first battery, a second battery and a power-on power supply, the first battery is used for supplying power to a vehicle, and the method comprises the following steps:
If the first battery of the vehicle is in a power shortage state, charging the first battery by adopting the power-on power supply;
And if the total internal voltage of the first battery reaches a preset first voltage, charging the first battery by using the second battery.
2. The method of tapping according to claim 1, wherein charging the first battery with the tapping power supply comprises:
If the power-on power supply is connected to the power-on system, waking up a battery management system of the first battery by hard wires;
And in a state that the battery management system is awakened, charging the first battery by adopting the power supply.
3. The power-on method according to claim 1 or 2, wherein the power-on system further comprises a current limiting module provided between the power-on power supply and the first battery;
Wherein, adopt take the electric power supply to charge to the first battery, include:
the current limiting module is adopted to adjust the output current of the power supply to be a preset current;
and carrying out constant current charging on the first battery according to the preset current.
4. The power-on method according to claim 1, wherein the power-on system further comprises a converter provided between the second battery and the first battery;
before the internal total voltage of the first battery reaches the preset first voltage, the method further comprises:
and the battery management system adopting the first battery collects the internal total voltage and adjusts the output voltage of the converter according to the internal total voltage.
5. The power-on method according to claim 4, further comprising, before said adjusting the output voltage of the inverter according to the internal total voltage:
detecting whether the converter is normally started by adopting the battery management system;
and if the converter is started normally, the battery management system sends the message of the internal total voltage to the converter.
6. The method of tapping up according to claim 4, wherein after said adjusting the output voltage of said inverter according to said internal total voltage, further comprising:
determining a voltage difference between the internal total voltage and the output voltage;
And determining whether the internal total voltage reaches the first voltage according to the voltage difference.
7. The method of claim 6, wherein charging the first battery with the second battery if the total internal voltage of the first battery reaches a preset first voltage comprises:
if the voltage difference is within a preset voltage range, determining that the internal total voltage reaches the first voltage;
and according to the converter, the second battery is adopted to charge the first battery.
8. The power-on method according to claim 1, wherein the power-on system further comprises a charge-discharge switch provided between the first battery and the second battery, the charge-discharge switch being configured to control charge-discharge of the first battery;
Wherein said charging said first battery with said second battery comprises:
and closing the charge-discharge switch by adopting the battery management system so as to realize that the second battery charges the first battery.
9. A power-on system, comprising:
a first battery configured to low-voltage power the vehicle;
one end of the second battery is electrically connected with one end of the first battery, and the other end of the second battery is electrically connected with the other end of the first battery;
the first end of the power-on power supply is electrically connected with one end of the first battery, and the second end of the power-on power supply is electrically connected with the other end of the first battery;
When the first battery is in a power shortage state, the power-on power supply is configured to charge the first battery so that the total internal voltage of the first battery is a preset first voltage, and when the total internal voltage of the first battery reaches the first voltage, the second battery is configured to charge the first battery.
10. The power up system of claim 9, further comprising a current limiting module having one end electrically connected to the power up power source and another end electrically connected to one end of the first battery, the current limiting module configured to adjust an output current of the power up power source to a preset current, or/and,
The power-on system further comprises a converter, wherein a first end of the converter is electrically connected with one end of the first battery, a second end of the converter is electrically connected with the other end of the first battery, a third end and a fourth end of the converter are respectively electrically connected with two ends of the second battery, and the converter is configured to convert output voltage of the second battery into the first voltage.
CN202411505320.2A 2024-10-25 2024-10-25 Jumpering method and jumpering system Pending CN119482882A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202411505320.2A CN119482882A (en) 2024-10-25 2024-10-25 Jumpering method and jumpering system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202411505320.2A CN119482882A (en) 2024-10-25 2024-10-25 Jumpering method and jumpering system

Publications (1)

Publication Number Publication Date
CN119482882A true CN119482882A (en) 2025-02-18

Family

ID=94593740

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202411505320.2A Pending CN119482882A (en) 2024-10-25 2024-10-25 Jumpering method and jumpering system

Country Status (1)

Country Link
CN (1) CN119482882A (en)

Similar Documents

Publication Publication Date Title
KR101397023B1 (en) Battery pack and method for controlling the same
CN107521441A (en) The battery management system of vehicle
CN112677781B (en) Hybrid power supply system based on fuel cell and energy storage battery and automobile
CN111546938B (en) Vehicle hybrid storage battery management system and method
CN110789475B (en) Composite power supply management system and method
CN112721734B (en) Control method and device for charging vehicle
CN116101126A (en) Battery system and car
KR20230161874A (en) Rescue device of boosting 24 volts to supercapacitor for vehicle(s) and method of controlling the same
CN205185889U (en) Vehicle starting power device based on lithium ion capacitor
CN207968054U (en) A kind of automobile starting storage battery
JP2009071922A (en) DC backup power supply device and control method thereof
EP2792047B1 (en) Method and system for battery charging of a vehicle
CN108521158A (en) A commercial vehicle dual power supply charging and discharging equalization management system and management method
CN112109595A (en) Control system of fuel cell
CN218986363U (en) Electric vehicle starting circuit and electric vehicle
CN119482882A (en) Jumpering method and jumpering system
JP2002058175A (en) Independent power supply system
CN205945101U (en) Modular super battery
CN213109081U (en) Control system of fuel cell
CN115276157A (en) Low-voltage battery system
CN114179677A (en) Automatic awakening power supplementing method for bus
CN220009480U (en) Novel automatic charging AGV lithium battery system
CN119298304A (en) Jumpering method and jumpering system
KR102696167B1 (en) Vehicle emergency starting device and a control method thereof
US20240151201A1 (en) Vehicle emergency starting device and a control method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination