CN102565719A - System for wirelessly diagnosing fault of battery pack - Google Patents

Abstract

The invention relates to a system for wirelessly diagnosing a fault of a battery pack. By the system, a battery management module is used for transmitting battery monitoring data acquired by the battery management module to a remote terminal through a transmitting module in a wireless mode; the data is received by a receiving module at the terminal position, is transmitted to a terminal display module for real-time display and is transmitted to an external memory for real-time storage; the stored battery monitoring data is read by a fault diagnosing module, is replayed and is subjected to fault analysis; and therefore, a battery for a vehicle can be remotely monitored in real time, the quality of a new energy automobile can be tracked, and the complexity of monitoring the operating state of the battery in the conventional wired mode is changed. In addition, fault points can be found according to a diagnosis database of the system, so that convenience is brought to static analysis of the data.

Description

A kind of battery failure wireless diagnostic systems

Technical field

The present invention relates to a kind of electric battery diagnostic system in the battery technology field, particularly a kind of battery failure wireless diagnostic systems.

Background technology

From the consideration to the environment and the energy, electric vehicle engineering has obtained developing rapidly under the promotion of national governments and each major company.Battery management system is being born the important duty of optimizing battery use and extending battery life as the important component part of battery system.Early stage battery management system generally only has the simple functions of monitoring cell voltage, temperature, electric current.The popularization of in electric motor car, using along with advanced battery, to battery management system require increasingly highly, the function of battery management system is also more and more stronger, in function, reliability, significant effort has all been made in aspects such as practicality, security.

But between each cell in test and the preferred electric battery of dividing into groups, still have performance difference, these differences minute differences (like temperature difference) because of environment in the long-time running process of battery can produce new difference to some extent.Through long-time running, the individual cell performance obviously descends, and has a strong impact on battery performance, even causes the accident, and the performance that needs early diagnosis to go out cell descends and initial failure.In addition, decline of the performance of cell and fault can reduce SOC (state-of-charge) value of electric battery, because the electric weight of a cell of poor performance has determined the state-of-charge of whole battery group.=one electric battery generally is to be composed in series by several cells or battery module; The cell that performance falls behind may make the discharge of whole battery group premature termination.Thereby need be equipped with battery failures early diagnosis system.Realize the early prediction of battery failures and hidden danger through diagnostic system, thereby can increase the continual mileage and the time between failures of battery of electric vehicle group effectively, it is minimum that maintenance workload is dropped to, and guarantees the reliability service of electric motor car.

Present battery management system is all with the mode and the entire car controller communication of CAN bus, the loaded down with trivial details great effective range that has limited the battery management monitoring of wiring.

Summary of the invention

The purpose of the present invention exploitation provides a kind of easy and simple to handle, cost is low, communication is stable power battery pack fault wireless diagnostic systems; Realize the early prediction of battery failures and hidden danger; Thereby can increase the continual mileage and the time between failures of battery of electric vehicle group effectively, it is minimum that maintenance workload is dropped to; And transmit data with wireless mode, solve problems such as the wiring that the conventional batteries management system exists is loaded down with trivial details, battery cell monitoring is limited in scope.

Technical scheme of the present invention provides a kind of battery failure wireless diagnostic systems, and it comprises:

Battery management module, it is connected with several electric battery monitors collection to battery data;

Sending module, it is connected with said battery management module, and the battery detection data that collect are sent to remote terminal through wireless mode;

Receiver module, it is positioned at the distance terminal place, receives the battery detection data that transmitted by said sending module through wireless mode, and the battery detection data is sent in the external memory storage of its setting and preserves;

Fault diagnosis module, its to the battery detection data of storing in the said external memory storage read, format conversion, data readback and fault analysis;

The terminal display module, it is connected with said receiver module, and the battery detection data are shown in real time.

The control module of said battery management module adopts distributed topological structure, comprises a main control unit and a plurality of sub-control module, and the quantity of the quantity of said sub-control module and electric battery to be monitored is complementary;

The electric interfaces of each said sub-control module through being provided with connects corresponding electric battery and wherein cell carried out data acquisition, and single case battery is carried out fault diagnosis, safety management and State Control;

A plurality of said sub-control modules; Sub-communication network network through the battery management module setting; Carry out real-time Communication for Power with said main control unit, send its result who carries out behind data acquisition and the fault diagnosis algorithm to said main control unit by each said sub-control module;

Said main control unit is gathered the integrality information of all electric battery, and state-of-charge is estimated; The main communication network that said main control unit also is provided with through battery management module carries out communication with said sending module and the outside node device of this wireless diagnostic systems.

The sub-communication network network of said battery management module and main communication network are based on the communication network that the CAN bus makes up respectively.

In the said sending module, further comprise the CAN transceiver, single-chip microcomputer and radio transmitting and receiving chip;

Wherein, said CAN transceiver receives the battery detection data from said battery management module, and with the SPI mode these data is sent to said single-chip microcomputer;

Said single-chip microcomputer is communicated by letter with said radio transmitting and receiving chip through the SPI mode after it is received data and handles, and with wireless mode the data of its reception is sent to remote terminal by said radio transmitting and receiving chip again.

In the said receiver module, also comprise: radio transmitting and receiving chip and single-chip microcomputer;

Wherein, said radio transmitting and receiving chip receives the battery detection data that sending module is sent with wireless mode, and passes to said single-chip microcomputer with the SPI mode;

Said single-chip microcomputer is sent to said external memory storage with the SPI mode with these data and preserves, and, also these data are sent to the display module output of said terminal and show with serial mode.

Said external memory storage is the SD card, in said receiver module, is provided with the deck that is complementary with this SD card;

Said fault diagnosis module is the notebook computer that corresponding data conversion software and fault diagnosis software are installed, and wherein is provided with the memory bank that is complementary the said SD card that stores the battery detection data is installed.

Said terminal display module is the liquid crystal touch control screen that is connected with said receiver module with serial mode.

Compared with prior art; Battery failure wireless diagnostic systems according to the invention; Have following significant advantage: the present invention is sent to long-range display terminal with the battery data of battery management system collection through wireless transmitter; Realize the remote real-time monitoring of Vehicular battery and the quality of new-energy automobile is followed the tracks of, changed the complicacy of wired in the past mode monitoring battery duty.In addition; The present invention has data storage function and fault diagnosis functions, as long as SD card of configuration promptly can the real-time storage Monitoring Data, for the lower fault of incidence; Can under the unmanned situation, write down several hrs; Then through data readback, find the trouble spot according to the diagnostic data base of system, for the static analysis of data is provided convenience.Objective interface easy operating of the present invention has Chinese and English handoff functionality, also can be applicable to the advertising occasion, is with a wide range of applications.

Description of drawings

Fig. 1 is the structural drawing of battery failure wireless diagnostic systems provided by the invention;

Fig. 2 is the structural drawing of the battery management module that the present invention adopted;

Fig. 3 is the schematic diagram of the sending module that the present invention adopted;

Fig. 4 is the schematic diagram of the receiver module that the present invention adopted;

Fig. 5 A-Fig. 5 B is the electrical connection diagram of battery failure wireless diagnostic systems provided by the invention.

Embodiment

Below in conjunction with description of drawings embodiment of the present invention.

Cooperation is referring to shown in Fig. 1, Fig. 5 A ~ 5B; The present invention provides a kind of battery failure wireless diagnostic systems; Mainly comprise the battery management module 1, the sending module 2 that are positioned at the electric battery place, and the receiver module 3, fault diagnosis module 4 and the terminal display module 5 that are positioned at the remote subscriber place; Said sending module 2 sends data through wireless mode to said receiver module 3.

Cooperation in the battery management module 1 of the present invention, has been adopted distributed topological structure referring to shown in Fig. 2, Fig. 5 A, and the function of the complicacy that battery management unit need be accomplished is reasonably divided, thereby alleviates the burden of control module on algorithm.Concrete, the control module of battery management module 1 comprises a main control unit 6 and a plurality of sub-control modules 7, and the quantity of sub-control module 7 is decided according to the quantity of electric battery.

Each sub-control module 7 connects a corresponding electric battery through electric interfaces, is responsible for the information of cell is wherein gathered by sub-control module 7, and single case battery is carried out fault diagnosis, safety management and temperature control etc.Main control unit 6 is responsible for gathering the whole status information of electric battery, gathers parameters such as bus voltage, bus current and insulation resistance such as needs, and will SOC (state-of-charge) be estimated; Also to realize some passive security functions,, determine whether cutting off immediately the high tension loop of battery case, with the safety that guarantees car load etc. such as judge whether to have taken place collision through acceleration transducer at secure context.

Battery management module 1 also has two cover communication networks, and sub-communication network network 9 is used for the inner data communication of control module, and main communication network 8 is used for the communication of main control unit 6 and entire car controller, electric machine controller and sending module 2.That is to say that said main control unit 6 carries out real-time communication with sub-control module 7 through the CAN bus of sub-communication network network 9, after sub-control module 7 is carried out the algorithm of data acquisition and fault diagnosis, send the result to main control unit 6; Main control unit 6 with the information Unified Treatment of receiving after, the integral status of system is assessed, the information of necessity outside CAN node through main communication network 8 is sent.

Cooperation in the sending module 2 that the present invention adopts, comprises the single-chip microcomputer 11 ofCAN transceiver 10, Freescale company and the radio transmitting and receiving chip 12 of CC2430 type referring to shown in Fig. 3, Fig. 5 A.The information that describedCAN transceiver 10 receives from battery management module 1 main communication network 8 outside CAN nodes; And reach single-chip microcomputer 11 to data; 11 pairs of data of single-chip microcomputer are handled the back and are communicated by letter with radio transmitting and receiving chip 12 with the SPI mode; With wireless mode data are sent to remote terminal by this chip, realize the output of battery management module 1 Information Monitoring.Need connect the 5V direct supply during sending module 2 work.

Cooperation in the receiver module 3 that the present invention adopted, comprises the radio transmitting and receiving chip 12 of CC2430 type, the single-chip microcomputer 11 and theexternal memory storage 13 of Freescale company referring to shown in Fig. 4, Fig. 5 B.Radio transmitting and receiving chip 12 receives the battery data that sending module 2 is sent, and passes to single-chip microcomputer 11 with the SPI mode, after the single-chip microcomputer 11 deal with data information, with serial mode information is delivered to terminal display module 5 on the one hand, shows in real time through LCD; Deliver toexternal memory storage 13 real-time storage Monitoring Data with the SPI mode on the other hand.Can dispose a SD card as described external memory storage 13.Under off-position, the SD card is fit into the inboard deck of receiver module 3; Can power up use after installing,external memory storage 13 can't warm swap when work.Need connect the 5V direct supply during receiver module 3 work.

Described fault diagnosis module 4 should be the monitor data that can read in the saidexternal memory storage 13, and corresponding software is analyzed etc. subsequent treatment to monitor data device is installed.For example be a notebook computer that CANalyzer software is installed to be set as fault diagnosis module 4; The SD card that stores Monitoring Data is fit into the memory bank on the notebook computer; With conversion software the SD card is formatted as the FAT32 file system; Carry out data readback and fault analysis by CANalyzer software afterwards, the diagnostic data base through inquiry system finds the trouble spot, realizes the early prediction of battery failures and hidden danger.

Described terminal display module 5 is connected with receiver module 3 with serial mode; Show battery detection data in real time from battery management module 1; Voltage, temperature like cell; Maximum temperature, minimum temperature, medial temperature, maximum voltage, minimum voltage and the average voltage of single case battery, and parameters such as bus current and insulation resistance.This terminal display module 5 can adopt 12 cun liquid crystal touch control screen, and the LCDs WV is 9 ~ 28V, and rated power is 8W; What adopt is the serial ports mode of operation, baud rate 1200-115200bps; 32M character library space, 96M picture space are arranged; Support Real Time Clock Display, the objective interface easy operating has Chinese and English handoff functionality, can be applied to the advertising occasion.

Battery failure wireless diagnostic systems according to the invention; Adopt wireless communication technology that fault diagnosis functions are embedded in the battery management system; Realize the remote real-time monitoring of Vehicular battery and the quality of new-energy automobile has been followed the tracks of, changed the complicacy of wired in the past mode monitoring battery duty.In addition, the present invention has data storage function and fault diagnosis functions, and the real-time storage Monitoring Data finds the trouble spot according to the diagnostic data base of system, for the static analysis of data is provided convenience.Objective interface easy operating of the present invention has Chinese and English handoff functionality, also can be applicable to the advertising occasion, is with a wide range of applications.

Although content of the present invention has been done detailed introduction through above-mentioned preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute all will be conspicuous.Therefore, protection scope of the present invention should be limited appended claim.

Claims (7)

1. a battery failure wireless diagnostic systems is characterized in that, comprises:

Battery management module (1), it is connected with several electric battery monitors collection to battery data;

Sending module (2), it is connected with said battery management module (1), and the battery detection data that collect are sent to remote terminal through wireless mode;

Receiver module (3), it is positioned at the distance terminal place, receives the battery detection data that transmitted by said sending module (2) through wireless mode, and the battery detection data are sent to middle preservation of external memory storage (13) of its setting;

Fault diagnosis module (4), its battery detection data to storage in the said external memory storage (13) read, format conversion, data readback and fault analysis;

Terminal display module (5), it is connected with said receiver module (3), and the battery detection data are shown in real time.

2. battery failure wireless diagnostic systems according to claim 1 is characterized in that,

The control module of said battery management module (1) adopts distributed topological structure, comprises a main control unit (6) and a plurality of sub-control module (7), and the quantity of the quantity of said sub-control module (7) and electric battery to be monitored is complementary;

The electric interfaces of each said sub-control module (7) through being provided with connects corresponding electric battery and wherein cell carried out data acquisition, also single case battery carried out fault diagnosis, safety management and State Control;

A plurality of said sub-control modules (7); Sub-communication network network 9 through battery management module (1) setting; Carry out real-time Communication for Power with said main control unit (6), send its result who carries out behind data acquisition and the fault diagnosis algorithm to said main control unit (6) by each said sub-control module (7);

Said main control unit (6) is gathered the integrality information of all electric battery, and state-of-charge is estimated; The main communication network 8 that said main control unit (6) also is provided with through battery management module (1) carries out communication with said sending module (2) and the outside node device of this wireless diagnostic systems.

3. like the said battery failure wireless diagnostic systems of claim 2, it is characterized in that,

The sub-communication network network 9 and the main communication network 8 of said battery management module (1) are based on the communication network that the CAN bus makes up respectively.

4. like the said battery failure wireless diagnostic systems of claim 3, it is characterized in that,

In the said sending module (2), further comprise CAN transceiver (10), single-chip microcomputer (11) and radio transmitting and receiving chip (12);

Wherein, said CAN transceiver (10) receives the battery detection data from said battery management module (1), and with the SPI mode these data is sent to said single-chip microcomputer (11);

Said single-chip microcomputer (11) is communicated by letter with said radio transmitting and receiving chip (12) through the SPI mode after it is received data and handles, and with wireless mode the data of its reception is sent to remote terminal by said radio transmitting and receiving chip (12) again.

5. battery failure wireless diagnostic systems according to claim 1 is characterized in that,

In the said receiver module (3), also comprise: radio transmitting and receiving chip (12) and single-chip microcomputer (11);

Wherein, said radio transmitting and receiving chip (12) receives the battery detection data that sending module (2) is sent with wireless mode, and passes to said single-chip microcomputer (11) with the SPI mode;

Said single-chip microcomputer (11) is sent to said external memory storage (13) with the SPI mode with these data and preserves, and, also these data are sent to said terminal display module (5) output and show with serial mode.

6. battery failure wireless diagnostic systems according to claim 1 is characterized in that,

Said external memory storage (13) is the SD card, in said receiver module (3), is provided with the deck that is complementary with this SD card;

Said fault diagnosis module (4) is the notebook computer that corresponding data conversion software and fault diagnosis software are installed, and wherein is provided with the memory bank that is complementary the said SD card that stores the battery detection data is installed.

7. battery failure wireless diagnostic systems according to claim 1 is characterized in that,

Said terminal display module (5) is the liquid crystal touch control screen that is connected with said receiver module (3) with serial mode.

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