CN108155320B - Automobile distributed battery power supply control system and method based on wireless communication - Google Patents

Automobile distributed battery power supply control system and method based on wireless communication Download PDF

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Publication number
CN108155320B
CN108155320B CN201810023495.8A CN201810023495A CN108155320B CN 108155320 B CN108155320 B CN 108155320B CN 201810023495 A CN201810023495 A CN 201810023495A CN 108155320 B CN108155320 B CN 108155320B
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quick
battery pack
main controller
bms main
change
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CN108155320A (en
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黄静婷
严小勇
刘孟
李鹏
牟志军
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Lifan Technology Group Co Ltd
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Lifan Industry Group Co Ltd
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    • 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
    • H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling 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
    • H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the 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
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/60—Electric or hybrid propulsion means for production processes
    • 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
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Secondary Cells (AREA)

Abstract

The invention discloses an automobile distributed battery power supply control system and method based on wireless communication, comprising an on-vehicle ECU, wherein the on-vehicle ECU is in wireless connection with an enterprise monitoring server, the enterprise monitoring server is in wireless connection with a national monitoring server, and the enterprise monitoring server is also connected with a database; the vehicle-mounted ECU is further connected with the BMS main controller, the BMS main controller is used for establishing a wireless connection relation with the quick-change battery pack according to the frequency point data of the database, and acquiring battery pack data of the quick-change battery pack, and the battery pack data is transmitted to the national monitoring server through the vehicle-mounted ECU and the enterprise monitoring server. The method and the device realize the real-time uploading of the battery pack data to the enterprise monitoring server and the national monitoring server, and realize the monitoring of the battery pack data. The quick-change battery pack has the advantages of strong electricity storage capacity, excellent portability, reliable and safe electric connection, random frequency division connection, communication independence and small interference.

Description

Automobile distributed battery power supply control system and method based on wireless communication
Technical Field
The invention relates to the technical field of power batteries of new energy automobiles, in particular to an automobile distributed battery power supply control system and method based on wireless communication.
Background
New energy automobiles, particularly pure electric automobiles, become hot spots for development of automobile industry, and the existing pure electric automobiles all adopt power batteries as power sources. The existing pure electric vehicles are mainly divided into plug-in type and quick-change type based on the difference of charging modes. The number of the power batteries of the plug-in type pure electric vehicle is limited, so that the driving range of the pure electric vehicle is limited, and when the pure electric vehicle needs to drive a long range, the pure electric vehicle must be charged for many times along the way. However, the conventional plug-in type pure electric vehicle is generally charged for more than one hour at a time, so that the problem of low charging efficiency cannot be solved at a later time, and a plurality of inconveniences are brought to a driver, so that the problem becomes a key factor for restricting the popularization and the use of the pure electric vehicle.
Therefore, a quick-change battery pack of the power battery type pure electric vehicle is provided, and the quick-change battery pack can be independently replaced by a driver within a few minutes, which is approximately equal to or even better than one-time refueling time of a traditional fuel vehicle. In order to improve the convenience of use of such an electric vehicle, not only quick-change battery pack replacement stations need to be provided in various places, but also a stand-by quick-change battery pack needs to be placed on the vehicle to cope with the need from time to time at any time.
Therefore, in order to facilitate storage of the quick-change battery pack on the pure electric vehicle or to meet the requirements of vehicle space design and arrangement, it is highly desirable to design a quick-change battery pack with small volume, reliable structure and high safety coefficient. And for a small-sized quick-change battery pack, a set of control system suitable for the quick-change battery pack needs to be designed to control the communication and power supply of the battery pack. And for enterprise management, a set of platform capable of collecting product data in real time and a control system based on the platform are required to be designed to meet the requirements of enterprise management.
In the prior art, based on the novel battery pack, no management platform is provided for realizing data acquisition, so the management platform is proposed to be a necessary new technology along with the development of new energy automobiles.
Disclosure of Invention
Aiming at the problems, the invention provides an automobile distributed battery power supply control system and method based on wireless communication, which utilize the wireless communication technology to realize the control of communication and power supply of a quick-change battery pack.
In order to achieve the above purpose, the invention adopts the following specific technical scheme:
a car distributed battery power supply control system based on wireless communication is characterized in that: the system comprises a vehicle-mounted ECU, wherein the vehicle-mounted ECU is in wireless connection with an enterprise monitoring server, the enterprise monitoring server is in wireless connection with a national monitoring server, and a database is also connected to the enterprise monitoring server; the vehicle-mounted ECU is further connected with the BMS main controller, the BMS main controller is used for establishing a wireless connection relation with the quick-change battery pack according to the frequency point data of the database, and acquiring battery pack data of the quick-change battery pack, and the battery pack data is transmitted to the national monitoring server through the vehicle-mounted ECU and the enterprise monitoring server.
And the connection relation is established between the BMS main controller and the quick-change battery pack, so that the quick-change battery pack can upload battery pack data to the national monitoring server through the BMS main controller, the vehicle-mounted ECU and the enterprise monitoring server, and the battery pack data are also stored in the database at the same time, so that the dual supervision of enterprises and countries on new energy battery power supply data is realized, and the battery power supply meets the standard and simultaneously monitors the battery pack data. The reliability and the safety of the power supply of the quick-change battery pack are ensured. Wherein BMS main control unit and on-vehicle ECU pass through CAN bus connection.
Further, the BMS main controller is provided with a connection detection unit, a frequency point generation and distribution unit, a data transmission unit and a loss detection unit, the BMS main controller is connected with a high-voltage distribution module, N groups of high-voltage wire harnesses of the high-voltage distribution module are connected with N quick-change connectors in a one-to-one correspondence manner, and each quick-change connector is used for being connected with one quick-change battery pack; the connection detection unit is used for detecting the connection state of the quick-change connector and any quick-change battery pack; m candidate frequency points are arranged in the frequency point generating and distributing unit; the frequency point generating and distributing unit distributes one candidate frequency point to the quick-change battery pack randomly according to the electric connection state of the quick-change connector and the quick-change battery pack; the data transmission unit is used for carrying out data interaction of the battery pack with the quick-change battery pack; the loss detection unit is used for detecting the frequency point connection strength of the BMS main controller and the quick-change battery pack, and is also used for recording the frequency point loss time of the BMS main controller and the quick-change battery pack.
Wherein m is greater than or equal to N; and m and N are positive integers.
By adopting the scheme, when the automobile is charged, and the quick-change battery pack is connected to the quick-change connector of the automobile, the connection detection unit monitors in real time. Meanwhile, the frequency point generating and distributing unit can automatically distribute frequency points according to the connection state, and battery data interaction of the BMS main controller and the quick-change battery pack in the process of charging and subsequent charging is achieved. When the connection strength of the frequency points between the BMS main controller and the quick-change battery pack is too low, or the BMS main controller and the quick-change battery pack are in a disconnection state, the loss detection unit can detect in real time. If necessary, the candidate frequency points are redistributed to the BMS main controller and the quick-change battery pack, and the connection relation is reestablished. The connection reliability of the two is improved. The whole charging process realizes automatic frequency point allocation, connection relation establishment, mutual identification and battery data interaction. And the frequency points are randomly allocated, so that the independence is strong, and the external interference is effectively avoided. The intelligent and reliable control is realized without considering manual control, and the safety coefficient is high.
Still further described, the quick-change battery pack includes a battery cell box and a battery electric cabinet; a BMU detection unit is arranged in the battery cell box, and the frequency point generation and distribution unit distributes the candidate frequency points to the BMU detection unit; the battery electric cabinet is provided with a charging connector, the charging connector is used for being connected with any quick-change connector, the charging connector is connected with a battery core unit of the battery electric cabinet through a charging control circuit, and the charging control circuit is controlled by the BMU detection unit.
By adopting the scheme, the frequency point generating and distributing unit distributes the candidate frequency points to the BMU detecting unit, so that the connection relationship between the BMS main controller and the BMU detecting unit is realized. Meanwhile, the quick-change battery pack is connected with the automobile through the charging connector, and the battery cell unit is used for charging the automobile under the control of the BMU detection unit.
Still further described, the battery cell box comprises an external protection component, a cell module and a fixed sleeve of the cell module are arranged in the external protection component, the cell module is formed by stacking at least two sets of cell units with consistent structures, and the cell module is inserted in the fixed sleeve; the BMU detection unit is arranged on the upper end face of the upper wall of the fixed sleeve; the battery cell unit is three layers, the middle of the battery cell unit is a heat dissipation aluminum plate, the two sides of the heat dissipation aluminum plate are respectively provided with battery cells with the same structure, and all the battery cells are connected with the electric control circuit after being connected in series and parallel.
By adopting the scheme, the battery is small in size and is of an integrated structure, and firstly, the external protection assembly can play a role in sealing and protecting the internal battery cell module, so that the use safety is improved. The cell module realizes power supply. The BMU detection unit realizes power supply control. The battery is high in tightness between the inside and the outside, is suitable for frequent replacement, disassembly and assembly and movement, and effectively avoids damage caused by frequent movement.
Still further described, the charging connector is disposed on a side wall of the battery electric cabinet, and an RFID read-write module is further disposed in the side wall; and an RFID tag is arranged on the quick-change connector, and when the charging connector is connected with the quick-change connector, the RFID tag faces the RFID read-write module.
Through RFID read-write module and RFID label, RFID read-write module reads the label identity information of RFID label, realizes that quick change battery package verifies the car identity, and BMU detecting element will proofread information feedback to BMS main control unit simultaneously, realizes that BMS main control unit discerns the identity of quick change battery package. Meanwhile, the BMS main controller sends the identification result to the vehicle-mounted ECU, so that the battery pack data uploading is realized.
Through charging connector and quick change connector establishment electricity relation, long service life on the hardware, it is more reliable to connect, even the car shakes or sways in the in-process of traveling, also can not influence the relation of connection of the two, connects firmly reliably.
A control method of an automobile distributed battery power supply control system based on wireless communication comprises the following specific steps:
the method comprises the steps of performing two-stage wake-up on a vehicle-mounted ECU and a BMS main controller;
a step for establishing a wireless connection relationship between the BMS main controller and the quick-change battery pack;
the method comprises the steps of identifying identities of a BMS main controller and a quick-change battery pack;
and the step is used for carrying out sleep control on the vehicle-mounted ECU and the BMS main controller.
The vehicle-mounted ECU and the BMS main controller are awakened in sequence, so that the quick-change battery pack is used for supplying power to the automobile. Through two-stage awakening, the vehicle-mounted ECU and the BMS main controller are subjected to self-checking before power supply, and the power supply reliability is improved. The awakening process is intelligent and convenient, the whole awakening time is short, quick power supply is realized, and the BMS main controller can identify identity information of the quick-change battery pack, so that the power supply reliability is improved, and power supply errors are avoided.
Through special wireless connection, the frequency point numbers are randomly distributed to the BMS main controller, so that the frequency point numbers of each automobile are different, and the communication interference among automobiles of the same model is avoided and the external communication interference is also avoided by adopting random distribution.
Through identification, the RFID tag is arranged on the automobile, and the RFID read-write module is arranged on the quick-change battery pack, so that the identity check of the quick-change battery pack and the automobile is realized. Because the characteristic that RFID transmission information is near, when charging connector and battery quick change connector are connected, read the label identity information of RFID label through RFID read-write module, the car checks the quick change battery package that battery quick change connector connects and the quick change battery package that RFID label corresponds, if label identity information is unanimous, then steerable quick change battery package charges the car. And the automobile realizes automatic identification and control of charging through the RFID tag and the RFID read-write module. And the manual control is not needed, so that the time and the labor are saved, and the reliability is high.
After the vehicle is stopped, before entering a dormant power supply state, the quick-change battery pack can charge the standby power supply again, so that the longest dormant time is ensured. Preventing the automobile from being unable to start. The standby power supply information at least comprises the standby power supply electric quantity, the power supply current and the power supply voltage.
Still further methods are: the steps for carrying out two-stage wake-up on the vehicle-mounted ECU and the BMS main controller comprise the following steps:
a step for waking up the vehicle-mounted ECU;
a step for waking up the BMS main controller;
the specific content of the step for waking up the vehicle-mounted ECU is as follows:
s11a: the vehicle-mounted ECU acquires a power supply starting signal detected by an automobile starting detector;
s11b: the vehicle-mounted ECU verifies the power supply starting signal; the verification is passed, and the process proceeds to step S11c; if the verification is not passed, returning to step S11a;
s11c: the vehicle-mounted ECU starts ECU self-checking;
s11d: if the ECU self-checking is qualified, the vehicle-mounted ECU sends a BMS wake-up signal to the BMS main controller; if the ECU self-test is unqualified, reporting errors.
The ECU self-checking content at least comprises an ECU operation system, an operation current, an operation voltage, a whole vehicle controller and the operation condition of a communication system.
Wherein, the step is used for waking up the BMS main controller;
s12a: the BMS main controller acquires a BMS wake-up signal sent by the vehicle-mounted ECU;
s12b: the BMS main controller starts BMS self-checking; the BMS self-tests pass, and the step S12c is entered, otherwise, the error is reported;
s12c: the connection detection unit of the BMS main controller starts to detect the electric connection state of any connection unit between the BMS main controller and the quick-change battery pack;
the connection unit consists of a quick-change connector and a charging connector.
Wherein, BMS self-checking includes wireless communication detection and BMS controller operation detection at least. The BMS wake-up signal may be a data signal or an electrical signal.
Through awakening the BMS main controller, the BMS main controller and the quick-change battery pack are communicated, and the quick-change battery pack is controlled to supply power to the automobile. The intelligent power supply device is intelligent and convenient, does not need manual operation, realizes automatic detection and intelligent power supply.
Still further methods are: the specific content of the step for establishing the wireless connection relation between the BMS main controller and the quick-change battery pack is as follows:
s21: the BMS main controller calls m frequency point numbers from a frequency point database in the database, wherein the m frequency point numbers are in one-to-one correspondence with m frequency points, and the m frequency points are used as m candidate frequency points;
m frequency points, transmitting power limit values of all the frequency points and frequency point tolerance values are arranged in the frequency point database; the frequency value frequency bands of the M frequency points are as follows: f1-f 2, wherein the resolution of M frequency points is k, and the M frequency points correspond to M frequency point numbers;
s22: the connection detection unit of the BMS main controller detects that any connection unit between the BMS main controller and the quick-change battery pack is in an electric connection state;
s23: the BMS main controller randomly extracts one frequency point number from m frequency point numbers according to a pseudo-random code mechanism, and obtains a corresponding candidate frequency point according to the extracted frequency point number;
s24: and the BMS main controller distributes the obtained candidate frequency points to corresponding quick-change battery packs, and establishes a wireless connection relationship between the BMS main controller and the quick-change battery packs.
Wherein M is more than or equal to M, and M and M are positive integers.Sequentially numbering M frequency points: x is x 1 ,x 2 ,x 3 ,L,x M . In which the frequency number x 1 The corresponding frequency point is f1, and the frequency point number x 2 The corresponding frequency point is f1+kL.
The frequency point database is connected with the vehicle-mounted ECU, the vehicle-mounted ECU is connected with the BMS main controller, and the BMS main controller randomly invokes M frequency point numbers from M frequency point numbers in the frequency point database, so that the frequency point numbers which are invoked by each automobile are inconsistent, and the frequency point independence of each automobile is enhanced.
Still further methods are: the method is used for identifying identities of the BMS main controller and the quick-change battery pack, and comprises the following steps of:
s31: the BMS main controller sends automobile power supply verification information to the quick-change battery pack;
s32: the BMS main controller acquires the checking information of the quick-change battery pack;
the verification information is information for verifying power supply verification information and tag identity information of the automobile by the quick-change battery pack, the tag identity information is information read by an RFID read-write module from an RFID tag, the RFID read-write module is arranged on the quick-change battery pack, and the RFID tag is arranged on the body of the automobile;
s33: the BMS main controller obtains battery pack self-checking information of the quick-change battery pack; if the self-checking information of the battery pack is normal, the step S34 is entered; otherwise, returning to the step S33;
s34: the BMS main controller sends power supply information to the quick-change battery pack and controls the quick-change battery pack to supply power to the automobile.
Identity information proofreading is carried out between BMS main control unit and the quick change battery package, and not only BMS main control unit can acquire the identity information of quick change battery package, and the quick change battery package can also acquire BMS main control unit's identity information, realizes two-way verification, avoids the power supply to take place the mistake, and the reliability is strong.
Still further describing, the steps for performing sleep control on the vehicle-mounted ECU and the BMS main controller specifically include:
s41: the vehicle-mounted ECU acquires a dormant signal detected by an automobile starting detector;
s42: the vehicle-mounted ECU detects standby power supply information of a standby power supply; if the standby power information is normal, the step S43 is performed; otherwise, returning an error;
s43: the vehicle-mounted ECU starts dormancy control countdown;
s44: the vehicle-mounted ECU acquires current battery pack data received by the BMS main controller and uploads the current battery pack data to a battery database;
s45: and when the power-off countdown time is up, and the data uploading of the battery pack is completed, the vehicle-mounted ECU sends out a dormancy control signal to control the quick-change battery pack to be switched to a dormancy power supply state.
When entering a dormant state, data acquisition is realized, and the standby power supply is charged again, so that the dormant time is prolonged, and the defect that the automobile cannot be started after being dormant is prevented. The whole process is intelligent, safe, good in reliability and strong in independence.
The invention has the beneficial effects that: the method has the advantages that the battery pack data are uploaded to the enterprise monitoring server and the national monitoring server in real time, the battery pack data are monitored, and the battery communication, energy storage and power supply processes of the new energy automobile are managed through the enterprise and the national platform. The quick-change battery pack has the advantages of small volume, ingenious design, extremely high integration level, compact structure, small volume, strong electricity storage capacity, high safety coefficient, long service life, extremely good portability and extremely high market application value. The external protection component can play a role in sealing and protecting the internal cell module, so that the use safety is improved. The quick-change battery pack is reliable and safe in power supply connection, and the hardware connection is long in service life, so that power failure caused by bumping during driving of an automobile is prevented. BMS main control unit and quick change battery package wireless communication are connected, adopt the mode of random frequency division, improve BMS main control unit and quick change battery package wireless connection independence, effectively avoid wireless communication to receive other radio signal's interference. Identity information is checked before the power supply of the quick-change battery pack, so that the correctness of power supply of the automobile is realized. The power supply control method enables the power supply process to be orderly carried out, and the power supply reliability is high.
Drawings
FIG. 1 is a block diagram of the system architecture of the present invention;
FIG. 2 is a schematic view of the overall structure of the quick-change battery pack of the present invention;
FIG. 3 is a schematic diagram of the structure of the connection unit of the present invention;
FIG. 4 is a block diagram of a battery electric cabinet of the present invention;
FIG. 5 is a schematic view of the battery cell case structure of the present invention;
fig. 6 is a block diagram of a cell module of the present invention;
fig. 7 is a schematic diagram a of a cell unit structure according to the present invention;
fig. 8 is a schematic diagram B of a cell unit structure according to the present invention;
fig. 9 is a side view of the cell structure of the present invention;
FIG. 10 is a flowchart of the wake-up step of the in-vehicle ECU of the present invention;
fig. 11 is a BMS host controller wake-up flowchart of the present invention;
fig. 12 is a flowchart of wireless connection of the BMS host controller and the quick-change battery pack according to the present invention;
fig. 13 is a flowchart illustrating an identification process between the BMS host controller and the quick-change battery pack according to the present invention;
fig. 14 is a sleep control flow chart of the vehicle-mounted ECU, BMS main controller of the present invention.
Detailed Description
The following describes the embodiments and working principles of the present invention in further detail with reference to the drawings.
As can be seen from fig. 1, the system and the method for controlling distributed battery power supply of an automobile based on wireless communication comprise a vehicle-mounted ECU1, wherein the vehicle-mounted ECU1 is wirelessly connected with an enterprise monitoring server 2, the enterprise monitoring server 2 is wirelessly connected with a national monitoring server 3, and a database 4 is also connected with the enterprise monitoring server 2; the vehicle-mounted ECU1 is further connected with the BMS main controller 5, the BMS main controller 5 is used for establishing a wireless connection relation with the quick-change battery pack 6 according to the frequency data of the database 4, and acquiring battery pack data of the quick-change battery pack 6, and the battery pack data is transmitted to the national monitoring server 3 through the vehicle-mounted ECU1 and the enterprise monitoring server 2.
Referring to fig. 1, the BMS main controller 5 is provided with a connection detection unit 5a, a frequency point generation and distribution unit 5b, a data transmission unit 5c, and a loss detection unit 5d, and a high voltage distribution module 7 is connected to the BMS main controller 5, N groups of high voltage harnesses of the high voltage distribution module 7 are connected to N quick-change connectors 8a in a one-to-one correspondence, and each quick-change connector 8a is used for connecting one quick-change battery pack 6; the connection detection unit 5a is configured to detect a connection state between the quick-change connector 8a and any one of the quick-change battery packs 6; m candidate frequency points are arranged in the frequency point generating and distributing unit 5 b; the frequency point generating and distributing unit 5b randomly distributes one candidate frequency point to the quick-change battery pack 6 according to the electric connection state of the quick-change connector 8a and the quick-change battery pack 6; the data transmission unit 5c is configured to perform the battery pack data interaction with the quick-change battery pack 6; the loss detection unit 5d is used for detecting the frequency point connection strength of the BMS main controller 5 and the quick-change battery pack 6, and the loss detection unit 5d is also used for recording the frequency point loss time of the BMS main controller 5 and the quick-change battery pack 6.
Referring to fig. 2, 5 and 6, the quick-change battery pack 6 includes a battery cell box 61 and a battery electric control box 62;
a BMU detection unit 61a is disposed in the battery cell box 61, and the frequency point generating and distributing unit 5b distributes the candidate frequency points to the BMU detection unit 61a; the battery electric cabinet 62 is provided with a charging connector 8b, the charging connector 8b is used for being connected with any quick-change connector 8a, the charging connector 8b is connected with the battery cell unit a3 of the battery electric cabinet 62 through a charging control circuit, and the charging control circuit is controlled by the BMU detection unit 61 a.
Referring to fig. 2, 5 and 6, the battery cell box 61 includes an external protection component a, a cell module a1 and a fixing sleeve a2 of the cell module a1 are disposed in the external protection component a, the cell module a1 is formed by stacking at least two sets of cell units a3 with identical structures, and the cell module a1 is inserted into the fixing sleeve a 2; the fixing sleeve a2 is of a structure with surrounding upper, lower, left and right walls and front and rear openings, and the BMU detection unit 61a is arranged on the upper end face of the upper wall of the fixing sleeve a 2; the battery cell unit a3 is three layers, the middle layer of the battery cell unit is a heat dissipation aluminum plate a31, the two sides of the heat dissipation aluminum plate a31 are respectively provided with battery cells a32 with the same structure, and all the battery cells a32 are connected with the electric control circuit after being connected in series and parallel.
Referring to fig. 7 to 9, a heat conductive aluminum plate a31 of the cell unit a3, two cells a32, and two oppositely disposed cell holders a33. The cell support a33 is a strip structure, and the cell support a33 has a connection structure. The heat conducting aluminum plate a31 is fixed between two cell supports a33, namely, the outer edges of two sides of the heat conducting aluminum plate a31 are respectively fixed on the corresponding cell supports a33, and the outer edges of the other two sides are respectively bent to form a lap joint part a311. The two electric cores a32 are respectively positioned at two sides of the heat-conducting aluminum plate a31, the two outer edges of the two sides of the electric core a32 adjacent to the corresponding electric core support a33 are respectively provided with a polar eye a321, the two polar eyes a321 respectively positioned at one end of the two electric cores a32 penetrate through one electric core support a33 and then are combined with each other, and the two polar eyes a321 respectively positioned at the other end of the two electric cores a32 penetrate through the other electric core support a33 and then are separated from each other. Two electrode eyes a321 at one end of two battery cell units a32 of the same battery cell unit a3 penetrate through one battery cell support a33 and then are respectively bent inwards and mutually overlapped, and two electrode eyes a321 at the other end penetrate through the other battery cell support a33 and then are respectively bent outwards and are respectively overlapped with corresponding electrode eyes a321 of two adjacent battery cell units a3 at two sides, so that the two battery cell units a32 in the same battery cell unit a3 are connected in series, and the battery cell units a32 of the adjacent battery cell units a3 are connected in series.
Wherein the sequentially arranged battery cells a32 can be stacked transversely or longitudinally. Sequentially arranged. And the electric energy storage of the electric core is realized through parallel connection or serial connection, and the electric core is used for supplying power to the automobile.
In the embodiment, the longitudinal stacking is adopted, and the electric energy storage of the electric cores is realized by connecting all the arranged electric cores in series, and the electric cores are used for supplying power to the automobile.
Referring to fig. 2, 5 and 6, the external protection component a includes a cover f2 made of plastic material, a base f1 made of metal material and a box outer frame f3 made of metal material; the cover body f2 is covered on the base f1 and forms a cuboid-shaped box dustproof and waterproof structure with the base f1, the box outer frame f3 at least covers part of the outer surface of the cover body f2, and the lower bottom of the box outer frame f3 is turned inwards and buckled with the lower bottom of the base f1 and is fixed through screws.
In the present embodiment, the strength of the casing outer frame f3 is greater than that of the cover f 2.
Referring to fig. 5, the battery cell module a1 further includes a module fixing base a11 and a module fixing top plate a12, and the fixing sleeve a2 is disposed between the module fixing base a11 and the module fixing top plate a 12. The module fixing base a11 includes a rectangular bottom plate portion a111, two long side plate portions a112, and two short side plate portions a113, the two long side plate portions a112 and the two short side plate portions a113 are disposed in pairs, and extend upward from the outer edge of the bottom plate portion a111, specifically, the two long side plate portions a112 and the two short side plate portions a113 are respectively folded by different sides of the bottom plate portion a 111.
In the present embodiment, referring to fig. 3 and 4, the charging connector 8b is disposed on one side wall of the battery electric cabinet 62, and an RFID read-write module 9a is further disposed in the side wall;
an RFID tag 9b is arranged on the quick-change connector 8a, and when the charging connector 8b is connected with the quick-change connector 8a, the RFID tag 9b faces the RFID read-write module 9a.
As can be seen from fig. 1, the RFID read-write module transmits the read tag identity information to the BMU detection unit of the quick-change battery pack through the detection circuit and the filter amplification circuit. And the activation control signal sent by the BMU detection unit controls the RFID read-write module to send an activation signal through the power amplification circuit.
A control method of an automobile distributed battery power supply control system based on wireless communication mainly comprises the following steps:
a step for carrying out two-stage wake-up on the vehicle-mounted ECU1 and the BMS main controller 5;
a step for establishing a wireless connection relationship between the BMS main controller 5 and the quick-change battery pack 6;
the step for identifying the identity of the BMS main controller 5 and the quick-change battery pack 6;
and a step for performing sleep control on the vehicle-mounted ECU1 and the BMS main controller 5.
The steps for performing two-stage wake-up on the vehicle-mounted ECU1 and the BMS main controller 5 include:
a step for waking up the in-vehicle ECU 1;
a step 5 for waking up the BMS main controller;
in conjunction with fig. 10, the specific contents of the steps for waking up the vehicle-mounted ECU1 are:
s11a: the vehicle-mounted ECU1 acquires a power supply starting signal detected by an automobile starting detector;
s11b: the vehicle-mounted ECU1 verifies the power supply starting signal; the verification is passed, and the process proceeds to step S11c; if the verification is not passed, returning to step S11a;
s11c: the vehicle-mounted ECU1 starts ECU self-test;
s11d: if the ECU self-test is qualified, the vehicle-mounted ECU1 sends a BMS wake-up signal to the BMS main controller 5; if the ECU self-checking is unqualified, reporting errors;
wherein, in connection with fig. 11, the method is used for waking up the BMS main controller 5;
s12a: the BMS main controller 5 acquires a BMS wake-up signal sent by the vehicle-mounted ECU 1;
s12b: the BMS main controller 5 starts BMS self-test; the BMS self-tests pass, and the step S12c is entered, otherwise, the error is reported;
s12c: the connection detection unit 5a of the BMS main controller 5 starts to detect the electrical connection state of any connection unit 8 between the BMS main controller 5 and the quick-change battery pack 6;
the connection unit 8 is composed of a quick-change connector 8a and a charging connector 8 b.
Referring to fig. 12, the specific contents of the steps for the BMS main controller 5 to establish a wireless connection with the quick-change battery pack 6 are:
s21: the BMS main controller 5 retrieves m frequency point numbers from the frequency point database 4 in the database 4, wherein the m frequency point numbers are in one-to-one correspondence with m frequency points, and the m frequency points are used as m candidate frequency points;
m frequency points, transmitting power limit values of all the frequency points and frequency point tolerance values are arranged in the frequency point database 4; the frequency value frequency bands of the M frequency points are as follows: f1-f 2, wherein the resolution of M frequency points is k, and the M frequency points correspond to M frequency point numbers;
s22: the connection detection unit 5a of the BMS main controller 5 detects that any one of the connection units 8 between the BMS main controller 5 and the quick-change battery pack 6 is in an electrical connection state;
s23: the BMS main controller 5 randomly extracts one frequency point number from m frequency point numbers according to a pseudo-random code mechanism, and obtains a corresponding candidate frequency point according to the extracted frequency point number;
s24: the BMS main controller 5 distributes the obtained candidate frequency points to the corresponding quick-change battery packs 6, and establishes a wireless connection relationship between the BMS main controller 5 and the quick-change battery packs 6.
Referring to fig. 13, the steps for identifying identities of the BMS main controller 5 and the quick-change battery pack 6 to realize that the quick-change battery pack 6 supplies power to the automobile are as follows:
s31: the BMS main controller 5 transmits the vehicle power supply verification information to the quick-change battery pack 6;
s32: the BMS main controller 5 acquires the collation information of the quick-change battery pack 6;
the checking information is information for checking the power supply verification information of the automobile and the tag identity information of the quick-change battery pack 6, wherein the tag identity information is information read by the RFID read-write module 9a from the RFID tag 9b, the RFID read-write module 9a is arranged on the quick-change battery pack 6, and the RFID tag 9b is arranged on the automobile body;
s33: the BMS main controller 5 acquires battery pack self-checking information of the quick-change battery pack 6; if the self-checking information of the battery pack is normal, the step S34 is entered; otherwise, returning to the step S33;
s34: the BMS main controller 5 transmits power supply information to the quick-change battery pack 6, and controls the quick-change battery pack 6 to supply power to the automobile.
Referring to fig. 14, the steps for performing sleep control on the vehicle-mounted ECU1 and the BMS main controller 5 specifically include:
s41: the vehicle-mounted ECU1 acquires a dormant signal detected by an automobile starting detector;
s42: the vehicle-mounted ECU1 detects standby power supply information of a standby power supply; if the standby power information is normal, the step S43 is performed; otherwise, returning an error;
s43: the vehicle-mounted ECU1 starts sleep control countdown;
s44: the vehicle-mounted ECU1 acquires current battery pack data received by the BMS main controller 5 and uploads the current battery pack data to the battery database 4;
s45: when the power-off countdown time is up, and the battery pack data uploading is completed, the vehicle-mounted ECU1 sends out a dormancy control signal to control the quick-change battery pack 6 to be switched to a dormancy power supply state.
It should be noted that the above description is not intended to limit the invention, but rather the invention is not limited to the above examples, and that variations, modifications, additions or substitutions within the spirit and scope of the invention will be within the scope of the invention.

Claims (10)

1. An automobile distributed battery power supply control system based on wireless communication is characterized in that: the intelligent monitoring system comprises a vehicle-mounted ECU (1), wherein the vehicle-mounted ECU (1) is in wireless connection with an enterprise monitoring server (2), the enterprise monitoring server (2) is in wireless connection with a national monitoring server (3), and a database (4) is further connected to the enterprise monitoring server (2);
the vehicle-mounted ECU (1) is also connected with the BMS main controller (5), the BMS main controller (5) is used for establishing a wireless connection relation with the quick-change battery pack (6) according to the frequency data of the database (4) and acquiring battery pack data of the quick-change battery pack (6), and the battery pack data is transmitted to the national monitoring server (3) through the vehicle-mounted ECU (1) and the enterprise monitoring server (2);
the specific content of the step that the BMS main controller (5) establishes a wireless connection relation with the quick-change battery pack (6) according to the frequency data of the database (4) is as follows:
s21: the BMS main controller (5) invokes m frequency point numbers from a frequency point database (4) in the database (4), wherein the m frequency point numbers are in one-to-one correspondence with m frequency points, and the m frequency points are used as m candidate frequency points;
m frequency points, transmitting power limit values of all the frequency points and frequency point tolerance values are arranged in the frequency point database (4); the frequency value frequency bands of the M frequency points are as follows: f1-f 2, wherein the resolution of M frequency points is k, and the M frequency points correspond to M frequency point numbers;
s22: the connection detection unit (5 a) of the BMS main controller (5) detects that any connection unit (8) between the BMS main controller (5) and the quick-change battery pack (6) is in an electric connection state;
s23: the BMS main controller (5) randomly extracts one frequency point number from m frequency point numbers according to a pseudo-random code mechanism, and obtains a corresponding candidate frequency point according to the extracted frequency point number;
s24: and the BMS main controller (5) distributes the obtained candidate frequency points to the corresponding quick-change battery packs (6) and establishes a wireless connection relationship between the BMS main controller (5) and the quick-change battery packs (6).
2. The wireless communication-based automotive distributed battery power control system of claim 1, wherein: the BMS main controller (5) is provided with a connection detection unit (5 a), a frequency point generation and distribution unit (5 b), a data transmission unit (5 c) and a loss detection unit (5 d), the BMS main controller (5) is connected with a high-voltage distribution module (7), N groups of high-voltage wire harnesses of the high-voltage distribution module (7) are connected with N quick-change connectors (8 a) in a one-to-one correspondence manner, and each quick-change connector (8 a) is used for being connected with one quick-change battery pack (6);
the connection detection unit (5 a) is used for detecting the connection state of the quick-change connector (8 a) and any quick-change battery pack (6);
m candidate frequency points are arranged in the frequency point generating and distributing unit (5 b); the frequency point generating and distributing unit (5 b) randomly distributes one candidate frequency point to the quick-change battery pack (6) according to the electric connection state of the quick-change connector (8 a) and the quick-change battery pack (6);
the data transmission unit (5 c) is used for carrying out data interaction of the battery pack with the quick-change battery pack (6);
the loss detection unit (5 d) is used for detecting the frequency point connection strength of the BMS main controller (5) and the quick-change battery pack (6), and the loss detection unit (5 d) is also used for recording the frequency point loss time of the BMS main controller (5) and the quick-change battery pack (6).
3. The wireless communication based automotive distributed battery powered control system of claim 1 or 2, wherein: the quick-change battery pack (6) comprises a battery core box (61) and a battery electric control box (62);
a BMU detection unit (61 a) is arranged in the battery cell box (61), and the frequency point generation and distribution unit (5 b) distributes the candidate frequency points to the BMU detection unit (61 a);
the battery electric cabinet (62) is provided with a charging connector (8 b), the charging connector (8 b) is used for being connected with any quick-change connector (8 a), the charging connector (8 b) is connected with a battery cell unit (a 3) of the battery electric cabinet (62) through a charging control circuit, and the charging control circuit is controlled by the BMU detection unit (61 a).
4. The wireless communication-based automotive distributed battery-operated control system of claim 3, wherein: the battery cell box (61) comprises an external protection component (a), a cell module (a 1) and a fixed sleeve (a 2) of the cell module (a 1) are arranged in the external protection component (a), the cell module (a 1) is formed by stacking at least two sets of cell units (a 3) with identical structures, and the cell module (a 1) is inserted into the fixed sleeve (a 2);
the BMU detection unit (61 a) is arranged on the upper end face of the upper wall of the fixed sleeve (a 2);
the battery cell unit (a 3) is three layers, the middle layer of the battery cell unit is a heat dissipation aluminum plate (a 31), the two sides of the heat dissipation aluminum plate (a 31) are respectively provided with battery cells (a 32) with the same structure, and all the battery cells (a 32) are connected with an electric control circuit after being connected in series and parallel.
5. The wireless communication-based automotive distributed battery-operated control system of claim 3, wherein: the charging connector (8 b) is arranged on one side wall of the battery electric cabinet (62), and an RFID read-write module (9 a) is further arranged in the side wall;
an RFID tag (9 b) is arranged on the quick-change connector (8 a), and when the charging connector (8 b) is connected with the quick-change connector (8 a), the RFID tag (9 b) is opposite to the RFID read-write module (9 a).
6. A control method of an automobile distributed battery power supply control system based on wireless communication according to claim 1, characterized by comprising:
the method comprises the steps of carrying out two-stage wake-up on an on-vehicle ECU (1) and a BMS main controller (5);
a step for establishing a wireless connection relationship between the BMS main controller (5) and the quick-change battery pack (6);
the method comprises the steps of identifying identities of a BMS main controller (5) and a quick-change battery pack (6);
and the step for carrying out sleep control on the vehicle-mounted ECU (1) and the BMS main controller (5).
7. The control method of the wireless communication-based distributed battery power supply control system for the automobile of claim 6, wherein the step for performing two-stage wake-up on the onboard ECU (1) and the BMS main controller (5) comprises:
a step for waking up the in-vehicle ECU (1);
a step (5) for waking up the BMS main controller;
the specific content of the step for waking up the vehicle-mounted ECU (1) is as follows:
s11a: the vehicle-mounted ECU (1) acquires a power supply starting signal detected by an automobile starting detector;
s11b: the vehicle-mounted ECU (1) verifies the power supply starting signal; the verification is passed, and the process proceeds to step S11c; if the verification is not passed, returning to step S11a;
s11c: the vehicle-mounted ECU (1) starts ECU self-checking;
s11d: if the ECU self-checking is qualified, the vehicle-mounted ECU (1) sends a BMS wake-up signal to the BMS main controller (5); if the ECU self-checking is unqualified, reporting errors;
wherein, the step (5) is used for waking up the BMS main controller;
s12a: the BMS main controller (5) acquires a BMS wake-up signal sent by the vehicle-mounted ECU (1);
s12b: the BMS main controller (5) starts BMS self-checking; the BMS self-tests pass, and the step S12c is entered, otherwise, the error is reported;
s12c: a connection detection unit (5 a) of the BMS main controller (5) starts to detect the electric connection state of any connection unit (8) between the BMS main controller (5) and the quick-change battery pack (6);
the connection unit (8) is composed of a quick-change connector (8 a) and a charging connector (8 b).
8. The control method of the distributed battery power supply control system for the automobile based on wireless communication according to claim 6, wherein the specific content of the step for establishing the wireless connection relationship between the BMS main controller (5) and the quick-change battery pack (6) is as follows:
s21: the BMS main controller (5) invokes m frequency point numbers from a frequency point database (4) in the database (4), wherein the m frequency point numbers are in one-to-one correspondence with m frequency points, and the m frequency points are used as m candidate frequency points;
m frequency points, transmitting power limit values of all the frequency points and frequency point tolerance values are arranged in the frequency point database (4); the frequency value frequency bands of the M frequency points are as follows: f1-f 2, wherein the resolution of M frequency points is k, and the M frequency points correspond to M frequency point numbers;
s22: the connection detection unit (5 a) of the BMS main controller (5) detects that any connection unit (8) between the BMS main controller (5) and the quick-change battery pack (6) is in an electric connection state;
s23: the BMS main controller (5) randomly extracts one frequency point number from m frequency point numbers according to a pseudo-random code mechanism, and obtains a corresponding candidate frequency point according to the extracted frequency point number;
s24: and the BMS main controller (5) distributes the obtained candidate frequency points to the corresponding quick-change battery packs (6) and establishes a wireless connection relationship between the BMS main controller (5) and the quick-change battery packs (6).
9. The control method of the distributed battery power supply control system of the automobile based on wireless communication according to claim 6, wherein the steps for identifying identities of the BMS main controller (5) and the quick-change battery pack (6) to realize the power supply of the automobile by the quick-change battery pack (6) are as follows:
s31: the BMS main controller (5) sends automobile power supply verification information to the quick-change battery pack (6);
s32: the BMS main controller (5) acquires the calibration information of the quick-change battery pack (6);
the checking information is information for checking the power supply verification information and the tag identity information of the automobile by the quick-change battery pack (6), the tag identity information is information read by an RFID read-write module (9 a) from an RFID tag (9 b), the RFID read-write module (9 a) is arranged on the quick-change battery pack (6), and the RFID tag (9 b) is arranged on the automobile body;
s33: the BMS main controller (5) acquires battery pack self-checking information of the quick-change battery pack (6); if the self-checking information of the battery pack is normal, the step S34 is entered; otherwise, returning to the step S33;
s34: the BMS main controller (5) sends power supply information to the quick-change battery pack (6) and controls the quick-change battery pack (6) to supply power to the automobile.
10. The control method of the wireless communication-based distributed battery power supply control system for the automobile, according to claim 6, is characterized in that the step for performing sleep control on the vehicle-mounted ECU (1) and the BMS main controller (5) specifically comprises the following steps:
s41: the vehicle-mounted ECU (1) acquires a dormant signal detected by an automobile starting detector;
s42: the vehicle-mounted ECU (1) detects standby power supply information of a standby power supply; if the standby power information is normal, the step S43 is performed; otherwise, returning an error;
s43: the vehicle-mounted ECU (1) starts dormancy control countdown;
s44: the vehicle-mounted ECU (1) acquires current battery pack data received by the BMS main controller (5) and uploads the current battery pack data to the battery database (4);
s45: and when the power-off countdown time is up, and the data uploading of the battery pack is completed, the vehicle-mounted ECU (1) sends out a dormancy control signal to control the quick-change battery pack (6) to be switched to a dormancy power supply state.
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