CN216562193U - Battery system teaching platform based on simulation battery - Google Patents
Battery system teaching platform based on simulation battery Download PDFInfo
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- CN216562193U CN216562193U CN202121530561.4U CN202121530561U CN216562193U CN 216562193 U CN216562193 U CN 216562193U CN 202121530561 U CN202121530561 U CN 202121530561U CN 216562193 U CN216562193 U CN 216562193U
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Abstract
The utility model belongs to the technical field of battery system teaching, and relates to a battery system teaching platform based on a simulation battery, which comprises: the device comprises a simulation battery module, a battery management system, a total positive relay, a total negative relay, a pre-charging resistor, a shunt, a battery current simulation unit, a temperature simulation unit, a battery total voltage simulation unit, a fault setting unit, a maintenance switch, a high-voltage wire harness, a collection wire harness, a measurement panel, a power supply unit, an output terminal, a rack and an upper computer. The technical scheme of the application can complete teaching tasks of battery system principle teaching, battery system fault analysis and processing teaching and battery system operation maintenance, and the teaching process is safe, comprehensive, economic and reliable.
Description
Technical Field
The utility model belongs to the technical field of battery system teaching, and relates to a battery system teaching platform based on a simulation battery.
Background
Under the trend of global high-speed development of new energy automobiles, the yield of the new energy automobiles in China already occupies a large global proportion, and the requirement on the operation and maintenance of the new energy automobiles is increased along with the increase of the reserved quantity of domestic electric automobiles. The battery system is a core component of the new energy automobile, and is a new industry, and the battery system is relatively complex and has strong specialization, so that China is in a starting stage for teaching of the battery system, and the development of the operation and maintenance market of the electric automobile is severely restricted.
At present, the domestic battery system teaching is mainly applied to a physical battery as a teaching main body, but the physical battery is adopted, so that the problems of poor safety, difficulty in transportation, storage and maintenance and the like exist. The abuse resistance of the physical cell is poor; if the operation is not proper, the battery can be permanently damaged and personal injury to testing personnel can be caused. The extreme conditions of battery such as overcharge, overdischarge and short circuit can not be simulated by the physical battery. The characteristics of the real battery change along with the multiplying power, expensive battery charging and discharging equipment needs to be arranged in the experimental process, the platform is complex, and the investment is large. The aging phenomenon exists in the use process of the material cell, so that the experimental process cannot be repeated for many times. The electrical characteristics of the physical battery at different time scales also need to consume a large amount of resources.
The battery system teaching platform based on the simulated battery has the advantages of being large in teaching content, safety, cost and the like compared with a physical battery under the condition that the appearance and various characteristics of the physical battery are comprehensively simulated, overcomes the defects of the physical battery, and has large social benefit and economic benefit.
SUMMERY OF THE UTILITY MODEL
The utility model aims to: the utility model provides a battery system teaching platform based on simulation battery can accomplish battery system principle teaching, battery system fault analysis and processing teaching, battery system operation maintenance teaching task, and the teaching process is safe, comprehensive, economy and reliable, and concrete technical scheme is as follows:
a battery system teaching platform based on simulated batteries, comprising: the system comprises a plurality of simulation battery modules 1, a battery management system 3, a total positive relay 4, a total negative relay 8, a pre-charging relay 5, a pre-charging resistor 6, a shunt 9, a battery current simulation unit 13, a temperature simulation unit 14, a battery total voltage simulation unit 16, a fault setting unit 15, a maintenance switch 2, a measurement panel 12, a power supply unit 10, an output terminal 7, a rack 19 and an upper computer 11;
the plurality of simulated battery modules 1, the battery management system 3, the total positive relay 4, the total negative relay 8, the pre-charging relay 5, the pre-charging resistor 6, the shunt 9, the battery current simulation unit 13, the temperature simulation unit 14, the battery total voltage simulation unit 16, the fault setting unit 15, the maintenance switch 2, the measurement panel 12, the power supply unit 10, the output terminal 7 and the upper computer 11 are all fixed on the rack 19;
the simulation battery module 1 is connected with one end of a shunt 9, the other end of the shunt 9 is connected with one end of a total negative relay 8, the other end of the total negative relay 8 is connected with one end of an output terminal 7, the other end of the output terminal 7 is connected with one end of a pre-charging resistor 6 and one end of a total positive relay 4, the other end of the pre-charging resistor 6 is connected with one end of a pre-charging relay 5, the other end of the pre-charging relay 5 is connected with the other end of the total positive relay 4, and the other end of the total positive relay 4 is connected with the other end of the simulation battery pack 1;
the simulation battery module 1, the shunt 9, the total negative relay 8, the output terminal 7, the pre-charging resistor 6, the total positive relay 4, the pre-charging relay 5 and the connection thereof form a main loop;
the plurality of simulation battery modules 1 are connected with an upper computer 11; the upper computer 11 is connected with the battery management system 3, and the plurality of analog battery modules 1 are connected with the battery management system 3;
the upper computer 11 is connected with a battery current simulation unit 13; the upper computer 11 is connected with a temperature simulation unit 14; the upper computer 11 is connected with a fault setting unit 15; the upper computer 11 is connected with a battery total voltage simulation unit 16;
the battery management system 3 is connected with a battery current simulation unit 13 and a temperature simulation unit 14;
the battery management system 3 is connected with a total positive relay 4, a total negative relay 8, a pre-charging relay 5, a pre-charging resistor 6 and a shunt 9;
the plurality of simulation battery modules 1 are connected with the maintenance switch 2;
the measurement panel 12 is connected with the plurality of simulation battery modules 1, the total positive relay 4, the total negative relay 8, the pre-charging relay 5 and the battery management system 3;
the power supply unit 10 is connected with a plurality of simulated battery modules 1, a battery management system 3, a battery current simulation unit 13, a temperature simulation unit 14, a total battery voltage simulation unit 16 and a fault setting unit 15;
the simulation battery module 1 includes: a plurality of analog batteries;
the upper computer 11 is used for:
firstly, sending a target voltage instruction of a simulated battery monomer to a simulated battery module 1, realizing the simulation of each voltage parameter of the battery system, and obtaining actual parameter data of the simulated battery monomer from the simulated battery module 1;
acquiring parameters such as the simulated battery monomer voltage of the simulated battery module 1, the total voltage of the simulated battery module 1, the temperature of the simulated battery module 1 and the like acquired by the battery management system 3, and sending control instructions of all relays through the battery management system 3 to realize the control function of all relays;
each of the relays includes: a main positive relay 4, a main negative relay 8 and a pre-charging relay 5;
thirdly, sending an analog current setting instruction to the battery current analog unit 13;
fourthly, sending a simulated temperature setting instruction to the temperature simulation unit 14;
fifthly, sending a fault setting instruction and a fault recovery instruction to the fault setting unit 15;
sixthly, sending a simulated total battery voltage setting instruction to a total battery voltage simulation unit 16;
creating a mathematical model of a simulation battery monomer according to user requirements and data actually measured by the physical battery under each working condition, generating a data array, and downloading the data array to the simulation battery module 1 to realize the simulation of the characteristic parameters of the physical battery under each working condition;
the battery management system 3 is configured to:
collecting and monitoring parameters such as the single simulated battery voltage of the simulated battery module 1, the total voltage of the simulated battery module 1, the temperature of the simulated battery module 1, the state of charge of the simulated battery module 1 and the like;
providing communication, safety, cell balance and management control for the simulation battery module 1;
thirdly, communicating with the upper computer 11;
collecting current signals in the main loop through a current divider 9, and simulating the current signals in the main loop;
the simulation battery module 1 is used for:
receiving a target voltage instruction of a simulated battery monomer and a target voltage calibration instruction of the simulated battery monomer sent by an upper computer 11;
secondly, sending the current state data of all the simulated single batteries to the upper computer 11;
thirdly, simulating the output voltage of the solid battery module;
the output terminal 7 is used for: external load, capacitance or measuring total voltage;
the main positive relay 4 is used for: controlling the connection state of the positive terminal of the analog battery module 1 and the output terminal 7;
the master negative relay 8 is used for: controlling the connection state of the negative end of the analog battery module 1 and the output terminal 7;
the pre-charging resistor 6 is used for: slowly charging the capacitance at the output terminal 7;
the pre-charge relay 5 is used for: controlling the connection state of the pre-charging resistor 6 in the main loop;
the flow divider 9 is used for: collecting current signals in the main loop and transmitting the current signals to the battery management system 3;
the battery current simulation unit 13 is configured to: transmitting a simulation current acquisition signal to a battery management system 3 to realize the simulation of the working current of the battery system under each working condition;
the temperature simulation unit 14 is configured to: transmitting a simulation temperature signal to a battery management system 3 to realize the simulation of temperature data of the battery system under each working condition;
the battery total voltage simulation unit 16 is configured to: simulating a high voltage output by the battery system;
the fault setting unit 15 is configured to: setting all hardware faults of the battery system in actual operation;
the hardware failure comprises: line faults, insulation faults, relay faults, high-voltage interlocking faults and the like;
the service switch 2 is used for: in order to protect the safety of technicians for maintaining the electric automobile in a high-voltage environment or meet certain emergency events, the connection of the main circuit can be quickly separated, so that the maintenance and other work are in a safe state;
a plurality of measuring terminals are arranged on the measuring panel 12;
the measurement panel 12 is used for: the single voltage signals of the simulation battery module 1 and the control voltage signals of the relays are respectively led out to separate measuring terminals, so that the measurement operation and debugging are facilitated;
the power supply unit 10 is configured to: power is supplied to the simulation battery module 1, the battery management system 3, the battery current simulation unit 13, the temperature simulation unit 14, the total battery voltage simulation unit 16, and the fault setting unit 15.
On the basis of the technical scheme, the simulation battery module 1 is connected with one end of a shunt 9 through a high-voltage wire harness 17, the other end of the shunt 9 is connected with one end of a master negative relay 8 through the high-voltage wire harness 17, the other end of the master negative relay 8 is connected with one end of an output terminal 7 through the high-voltage wire harness 17, the other end of the output terminal 7 is connected with one end of a pre-charging resistor 6 and one end of a master positive relay 4 through the high-voltage wire harness 17, the other end of the pre-charging resistor 6 is connected with one end of a pre-charging relay 5 through the high-voltage wire harness 17, the other end of the pre-charging relay 5 is connected with the other end of the master positive relay 4 through the high-voltage wire harness 17, and the other end of the master positive relay 4 is connected with the other end of the simulation battery pack 1 through the high-voltage wire harness 17;
the plurality of simulation battery modules 1 are connected with the upper computer 11 through a CAN bus; the upper computer 11 is connected with the battery management system 3 through a CAN bus; the upper computer 11 is connected with the battery current simulation unit 13 through a CAN bus; the upper computer 11 is connected with the temperature simulation unit 14 through a CAN bus; the upper computer 11 is connected with the fault setting unit 15 through a CAN bus or a 485 bus; the upper computer 11 is connected with the battery total voltage simulation unit 16 through a CAN bus;
the plurality of simulation battery modules 1 are all provided with acquisition interfaces, and the battery management system 3 is connected with the acquisition interfaces on the plurality of simulation battery modules 1 through acquisition wiring harnesses 18;
the battery management system 3 is connected with a master positive relay 4, a master negative relay 8, a pre-charging relay 5, a pre-charging resistor 6 and a shunt 9 through a collection wire harness 18;
the plurality of simulation battery modules 1 are connected with the maintenance switch 2 through a high-voltage wire harness 17.
On the basis of the technical scheme, the simulation battery module 1 is formed by connecting the plurality of simulation batteries in series, and the simulation battery module 1 is packaged into the appearance form of a solid battery module in the current market.
On the basis of the above technical solution, the analog battery includes: a high-precision controllable voltage source, a controller and a battery housing;
the controllable voltage source and the controller are both arranged in the battery shell;
the controllable voltage source is connected with the controller;
the controllable voltage source is used for: simulating an output voltage;
the controller is configured to: controlling the output voltage of the controllable voltage source and communicating with the upper computer 11;
the simulated battery is packaged into the appearance form of a solid battery on the market at present.
On the basis of the technical scheme, the battery management system 3 adopts a product actually adopted by an electric automobile, and the battery management system 3 adopts a master-slave integrated form or a master-slave form;
the total positive relay 4, the total negative relay 8, the pre-charging relay 5, the pre-charging resistor 6 and the shunt 9 are all products which are actually adopted in the electric automobile;
the battery total voltage simulation unit 16 is: a high voltage controllable power supply;
the maintenance switch 2 is a product actually used in an electric vehicle.
On the basis of the above technical solution, the temperature simulation unit 14 is implemented in a first mode or a second mode;
the first mode is as follows: the temperature simulation unit 14 is: a temperature sensor;
the temperature sensor adopts a high-precision resistor array to simulate the temperature sensor;
a high-precision resistor array of the resistance value of the corresponding temperature is connected to a temperature detection terminal arranged on the battery management system 3;
the second mode is as follows: by simulating the communication protocol of the battery management system 3, the temperature simulation unit 14 sends corresponding temperature data to the battery management system 3, and informs the battery management system 3 of a corresponding temperature value.
On the basis of the technical scheme, the line fault comprises the following steps: an on-off fault is set between the battery management system 3 and the simulated battery module 1, an on-off fault is set between the battery management system 3 and the master positive relay 3, an on-off fault is set between the battery management system 3 and the pre-charge relay 5, and an on-off fault is set between the battery management system 3 and the master negative relay 8.
On the basis of the technical scheme, the measurement panel 12 leads out a single voltage signal, an internal total positive signal, an external total positive signal, a control voltage signal of the total positive relay 4, a control voltage signal of the total negative relay 8, a control voltage signal of the pre-charge relay 5, a high-voltage interlocking signal and the like of the simulated battery module 1 to a measurement terminal of the measurement panel 12, so that the measurement operation and debugging are facilitated;
the internal total positive signal is led out from the input end of the total positive relay 4;
the external total positive signal is led out from the output end of the total positive relay 4;
the high voltage interlock signal is derived from the response terminal of the battery management system 3.
A method for realizing a battery system teaching platform comprises the following steps:
step S01, according to user requirements, establishing a mathematical model of a simulation battery monomer in the upper computer 11 according to actually measured data of the physical battery under various working conditions, and generating a data array;
step S02, setting working condition characteristic parameters and fault states of the battery on a monitoring interface of the upper computer 11 by a user;
step S03, the upper computer 11 sends a simulation battery monomer target voltage instruction to the simulation battery module 1;
step S04, according to the requirements of a user, the upper computer 11 sends a simulation current setting instruction to the battery current simulation unit 13;
step S05, according to the requirements of the user, the upper computer 11 sends a simulated temperature setting instruction to the temperature simulation unit 14;
step S06, according to the requirements of a user, the upper computer 11 sends a simulated total battery voltage setting instruction to the total battery voltage simulation unit 16;
step S07, the upper computer 11 obtains parameters such as the simulated battery monomer voltage of the simulated battery module 1, the total voltage of the simulated battery module 1 and the temperature of the simulated battery module 1, which are acquired by the battery management system 3 (namely, the battery system state information is read from the battery management system 3);
step S08, according to the user requirements, the upper computer 11 establishes a fault model and generates a fault code group;
in step S09, the upper computer transmits a failure setting code to the failure setting unit 15.
The utility model has the following beneficial technical effects:
the battery system teaching platform based on the simulated battery can complete teaching tasks of battery system principle teaching, battery system fault analysis and processing teaching and battery system operation maintenance, and is safe, comprehensive, economical and reliable in teaching process.
Drawings
The utility model has the following drawings:
fig. 1 shows a block diagram illustrating a structure of a teaching platform of a battery system according to an embodiment of the present invention.
Fig. 2 shows a schematic flow chart of a method for implementing a battery system teaching platform according to an embodiment of the present invention.
Reference numerals:
1. simulating a battery module; 2. a maintenance switch; 3. a battery management system; 4. a master positive relay; 5. a pre-charging relay; 6. pre-charging a resistor; 7. an output terminal; 8. a total negative relay; 9. a flow divider; 10. a power supply unit; 11. an upper computer; 12. a measurement panel; 13. a battery current simulation unit; 14. a temperature simulation unit; 15. a fault setting unit; 16. a battery total voltage simulation unit; 17. a high voltage wire harness; 18. collecting a wire harness; 19. a gantry.
Detailed Description
The following disclosure provides many different embodiments or examples for implementing the teachings of the present application. Specific embodiments of components and arrangements are described below to illustrate the utility model in detail. Of course, these examples are not intended to limit the present invention.
Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments, as will be apparent to one of ordinary skill in the art in view of the present disclosure.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention may be embodied in various forms, some examples of which are described below.
Fig. 1 is a block diagram showing a schematic structure of a teaching platform of a battery system according to an embodiment of the present invention, in which a thick black line connection represents a main circuit, and a thin black line connection represents a control and sampling line. As shown in fig. 1, the battery system teaching platform based on analog battery includes: the system comprises a simulation battery module 1, a battery management system 3, a total positive relay 4, a total negative relay 8, a pre-charging relay 5, a pre-charging resistor 6, a shunt 9, a battery current simulation unit 13, a temperature simulation unit 14, a battery total voltage simulation unit 16, a fault setting unit 15, a maintenance switch 2, a high-voltage wire harness 17, a collection wire harness 18, a measurement panel 12, a power supply unit 10, an output terminal 7, a rack 19 and an upper computer 11.
In this embodiment, the upper computer 11 is connected to the analog battery module 1 through the CAN bus, and sends the target voltage setting data of the analog battery cell to the analog battery module 1, and obtains the actual parameter data of the analog battery cell from the analog battery module 1.
In this embodiment, the upper computer 11 is connected to the battery management system 3 through the CAN bus, obtains data (including parameters such as a simulated cell voltage of the simulated battery module 1, a total voltage of the simulated battery module 1, and a temperature of the simulated battery module 1) detected by the battery management system 3, and sends control instructions of the relays (including the total positive relay 4, the total negative relay 8, and the pre-charge relay 5) to the battery management system 3, thereby implementing a control function of the relays.
In this embodiment, the battery management system 3 is connected to the collection interface of the analog battery module 1 through the collection harness 18, and detects data such as voltage data of each analog battery cell of the analog battery module 1 and temperature of the analog battery module 1.
The upper computer 11 is connected with the battery current simulation unit 13 through a CAN bus and sends a simulation current setting instruction to the battery current simulation unit 13.
The upper computer 11 is connected with the temperature simulation unit 14 through a CAN bus and sends a simulation temperature setting instruction to the temperature simulation unit 14.
The upper computer 11 is connected with the total battery voltage simulation unit 16 through a CAN bus and sends a simulated total battery voltage setting instruction to the total battery voltage simulation unit 16.
The upper computer 11 is connected with the fault setting unit 15 through a 485 bus, sends a fault setting instruction to the fault setting unit 15, and sets a hardware fault of the battery system according to the fault setting instruction or recovers the fault according to a fault recovery instruction by the fault setting unit 15.
Fig. 2 is a schematic flow chart of a method for implementing a battery system teaching platform according to an embodiment of the present invention, and as shown in fig. 2, the method for implementing a battery system teaching platform includes the following steps:
step S01, according to user requirements, establishing a mathematical model of a simulation battery monomer in the upper computer 11 according to actually measured data of the physical battery under various working conditions, and generating a data array;
step S02, setting working condition characteristic parameters and fault states of the battery on a monitoring interface of the upper computer 11 by a user;
step S03, the upper computer 11 sends a simulation battery monomer target voltage instruction to the simulation battery module 1;
step S04, according to the requirements of a user, the upper computer 11 sends a simulation current setting instruction to the battery current simulation unit 13;
step S05, according to the requirements of the user, the upper computer 11 sends a simulated temperature setting instruction to the temperature simulation unit 14;
step S06, according to the requirements of a user, the upper computer 11 sends a simulated total battery voltage setting instruction to the total battery voltage simulation unit 16;
step S07, the upper computer 11 obtains parameters such as the simulated battery monomer voltage of the simulated battery module 1, the total voltage of the simulated battery module 1 and the temperature of the simulated battery module 1, which are acquired by the battery management system 3 (namely, the battery system state information is read from the battery management system 3);
step S08, according to the user requirements, the upper computer 11 establishes a fault model and generates a fault code group;
in step S09, the upper computer transmits a failure setting code to the failure setting unit 15.
The battery system teaching platform based on the simulated battery can complete teaching tasks of battery system principle teaching, battery system fault analysis and processing teaching and battery system operation maintenance, and is safe, comprehensive, economical and reliable in teaching process.
The above-described embodiments are merely examples of the present invention, and although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will understand that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the present invention should not be limited to the disclosure of the embodiment and the drawings.
Those not described in detail in this specification are within the knowledge of those skilled in the art.
Claims (8)
1. The utility model provides a battery system teaching platform based on simulation battery which characterized in that includes: the device comprises a plurality of simulation battery modules (1), a battery management system (3), a total positive relay (4), a total negative relay (8), a pre-charging relay (5), a pre-charging resistor (6), a shunt (9), a battery current simulation unit (13), a temperature simulation unit (14), a battery total voltage simulation unit (16), a fault setting unit (15), a maintenance switch (2), a measurement panel (12), a power supply unit (10), an output terminal (7), a rack (19) and an upper computer (11);
the simulation battery modules (1), the battery management system (3), the total positive relay (4), the total negative relay (8), the pre-charging relay (5), the pre-charging resistor (6), the shunt (9), the battery current simulation unit (13), the temperature simulation unit (14), the battery total voltage simulation unit (16), the fault setting unit (15), the maintenance switch (2), the measurement panel (12), the power supply unit (10), the output terminal (7) and the upper computer (11) are all fixed on the rack (19);
the simulation battery module (1) is connected with one end of a shunt (9), the other end of the shunt (9) is connected with one end of a total negative relay (8), the other end of the total negative relay (8) is connected with one end of an output terminal (7), the other end of the output terminal (7) is connected with one end of a pre-charging resistor (6) and one end of a total positive relay (4), the other end of the pre-charging resistor (6) is connected with one end of a pre-charging relay (5), the other end of the pre-charging relay (5) is connected with the other end of the total positive relay (4), and the other end of the total positive relay (4) is connected with the other end of the simulation battery module (1);
the simulation battery module (1), the shunt (9), the total negative relay (8), the output terminal (7), the pre-charging resistor (6), the total positive relay (4), the pre-charging relay (5) and the connection of the pre-charging relay and the pre-charging relay form a main loop;
the plurality of simulation battery modules (1) are connected with an upper computer (11); the upper computer (11) is connected with the battery management system (3), and the plurality of simulation battery modules (1) are connected with the battery management system (3);
the upper computer (11) is connected with the battery current simulation unit (13); the upper computer (11) is connected with the temperature simulation unit (14); the upper computer (11) is connected with the fault setting unit (15); the upper computer (11) is connected with a battery total voltage simulation unit (16);
the battery management system (3) is connected with the battery current simulation unit (13) and the temperature simulation unit (14);
the battery management system (3) is connected with the total positive relay (4), the total negative relay (8), the pre-charging relay (5), the pre-charging resistor (6) and the shunt (9);
the plurality of simulation battery modules (1) are connected with the maintenance switch (2);
the measurement panel (12) is connected with the plurality of simulation battery modules (1), the total positive relay (4), the total negative relay (8), the pre-charging relay (5) and the battery management system (3);
the power supply unit (10) is connected with the plurality of simulated battery modules (1), the battery management system (3), the battery current simulation unit (13), the temperature simulation unit (14), the battery total voltage simulation unit (16) and the fault setting unit (15);
the simulation battery module (1) comprises: a plurality of analog cells;
the output terminal (7) is configured to: external load, capacitance or measuring total voltage;
the total positive relay (4) is used for: controlling the connection state of the positive terminal of the analog battery module (1) and the output terminal (7);
the total negative relay (8) is used for: controlling the connection state of the negative end of the analog battery module (1) and the output terminal (7);
the pre-charging resistor (6) is used for: slowly charging the capacitance at the output terminal (7);
the pre-charging relay (5) is used for: controlling the connection state of the pre-charging resistor (6) in the main loop;
the flow divider (9) is used for: collecting current signals in the main loop and transmitting the current signals to a battery management system (3);
the battery current simulation unit (13) is configured to: transmitting a simulation current acquisition signal to a battery management system (3) to realize the simulation of the working current of the battery system under each working condition;
the temperature simulation unit (14) is used for: transmitting a simulation temperature signal to a battery management system (3) to realize the simulation of temperature data of the battery system under each working condition;
the battery total voltage simulation unit (16) is used for: simulating a high voltage output by the battery system;
the fault setting unit (15) is configured to: setting all hardware faults of the battery system in actual operation;
the hardware failure comprises: line faults, insulation faults, relay faults, and high voltage interlock faults;
the service switch (2) is used for: disconnecting the connection of the main circuit;
a plurality of measuring terminals are arranged on the measuring panel (12);
the measuring panel (12) is used for: the single voltage signal of the simulation battery module (1) and the control voltage signal of each relay are respectively led out to a separate measuring terminal, so that the measurement operation and debugging are facilitated;
the power supply unit (10) is configured to: the power supply is provided for the simulation battery module (1), the battery management system (3), the battery current simulation unit (13), the temperature simulation unit (14), the battery total voltage simulation unit (16) and the fault setting unit (15).
2. The simulated battery based battery system teaching platform of claim 1 wherein: the simulation battery module (1) is connected with one end of the shunt (9) through a high-voltage wire harness (17), the other end of the shunt (9) is connected with one end of the main negative relay (8) through a high-voltage wire harness (17), the other end of the total negative relay (8) is connected with one end of the output terminal (7) through a high-voltage wire harness (17), the other end of the output terminal (7) is connected with one end of the pre-charging resistor (6) and one end of the main positive relay (4) through a high-voltage wire harness (17), the other end of the pre-charging resistor (6) is connected with one end of the pre-charging relay (5) through a high-voltage wire harness (17), the other end of the pre-charging relay (5) is connected with the other end of the main positive relay (4) through a high-voltage wire harness (17), the other end of the total positive relay (4) is connected with the other end of the simulation battery module (1) through a high-voltage wire harness (17);
the plurality of simulation battery modules (1) are connected with the upper computer (11) through a CAN bus; the upper computer (11) is connected with the battery management system (3) through a CAN bus; the upper computer (11) is connected with the battery current simulation unit (13) through a CAN bus; the upper computer (11) is connected with the temperature simulation unit (14) through a CAN bus; the upper computer (11) is connected with the fault setting unit (15) through a CAN bus or a 485 bus; the upper computer (11) is connected with the battery total voltage simulation unit (16) through a CAN bus;
the battery management system (3) is connected with the acquisition interfaces on the plurality of simulation battery modules (1) through acquisition wiring harnesses (18);
the battery management system (3) is connected with the main positive relay (4), the main negative relay (8), the pre-charging relay (5), the pre-charging resistor (6) and the shunt (9) through a collection wire harness (18);
the plurality of simulation battery modules (1) are connected with the maintenance switch (2) through high-voltage wiring harnesses (17).
3. The simulated battery based battery system teaching platform of claim 1 wherein: the simulation battery module (1) is formed by connecting the simulation batteries in series, and the simulation battery module (1) is packaged into the appearance form of a solid battery module.
4. The simulated battery based battery system teaching platform of claim 1 wherein: the analog battery includes: a controllable voltage source, a controller, and a battery housing;
the controllable voltage source and the controller are both arranged in the battery shell;
the controllable voltage source is connected with the controller;
the controllable voltage source is used for: simulating an output voltage;
the controller is configured to: controlling the output voltage of the controllable voltage source and communicating with an upper computer (11);
the simulated battery is packaged into the appearance form of a solid battery.
5. The simulated battery based battery system teaching platform of claim 1 wherein: the battery management system (3) adopts products on an electric automobile, and the battery management system (3) adopts a master-slave integrated mode or a master-slave mode;
the total positive relay (4), the total negative relay (8), the pre-charging relay (5), the pre-charging resistor (6) and the shunt (9) are all products on an electric automobile;
the battery total voltage simulation unit (16) is as follows: a high voltage controllable power supply;
the maintenance switch (2) is a product on an electric automobile.
6. The simulated battery based battery system teaching platform of claim 1 wherein: the temperature simulation unit (14) is realized in a first mode or a second mode;
the first mode is as follows: the temperature simulation unit (14) is: a temperature sensor;
the temperature sensor adopts a resistor array to simulate the temperature sensor;
the temperature detection terminal arranged on the battery management system (3) is connected with a resistor array with the resistance value of the corresponding temperature;
the second mode is as follows: the temperature simulation unit (14) sends corresponding temperature data to the battery management system (3) by simulating a communication protocol of the battery management system (3) and informs the battery management system (3) of a corresponding temperature value.
7. The simulated battery based battery system teaching platform of claim 1 wherein: the line fault includes: an on-off fault is set between the battery management system (3) and the simulation battery module (1), an on-off fault is set between the battery management system (3) and the main positive relay (4), an on-off fault is set between the battery management system (3) and the pre-charging relay (5), and an on-off fault is set between the battery management system (3) and the main negative relay (8).
8. The simulated battery based battery system teaching platform of claim 1 wherein: the measurement panel (12) leads a single voltage signal, an internal total positive signal, an external total positive signal, a control voltage signal of a total positive relay (4), a control voltage signal of a total negative relay (8), a control voltage signal of a pre-charging relay (5) and a high-voltage interlocking signal of a simulated battery of the simulated battery module (1) out to a measurement terminal of the measurement panel (12), so that the measurement operation and debugging are facilitated;
the internal total positive signal is led out from the input end of the total positive relay (4);
the external total positive signal is led out from the output end of the total positive relay (4);
the high-voltage interlocking signal is led out from a response terminal of the battery management system (3).
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