CN211478544U - BMS protection board test system - Google Patents
BMS protection board test system Download PDFInfo
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- CN211478544U CN211478544U CN201921999055.2U CN201921999055U CN211478544U CN 211478544 U CN211478544 U CN 211478544U CN 201921999055 U CN201921999055 U CN 201921999055U CN 211478544 U CN211478544 U CN 211478544U
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- 238000012360 testing method Methods 0.000 title claims abstract description 124
- 238000004088 simulation Methods 0.000 claims abstract description 30
- 230000004913 activation Effects 0.000 claims abstract description 17
- 238000001514 detection method Methods 0.000 claims description 28
- 230000003068 static effect Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 238000012795 verification Methods 0.000 claims description 4
- 238000010926 purge Methods 0.000 claims 1
- 238000013522 software testing Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 abstract 1
- 230000036413 temperature sense Effects 0.000 description 27
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- 238000012545 processing Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
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- 230000009977 dual effect Effects 0.000 description 1
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Abstract
The utility model discloses a BMS protection shield test system, including the main control system, the voltage source, the current source, simulation battery module and analog temperature module, the current source exports activation current to BMS protection shield according to the control command of main control system, the voltage source exports supply voltage to simulation battery module according to the control command of main control system, simulation battery module inserts the battery figure that corresponds according to the control command of main control system, analog temperature module inserts the temperature sensing figure that corresponds according to the control command of main control system, the main control system electricity is connected to the BMS protection shield, a performance for sending test command for the BMS protection shield in order to test the BMS protection shield. The utility model discloses an automatic test BMS protection shield each item performance has improved the efficiency of software testing of BMS protection shield, can ensure the uniformity of the parameter of factory setting; moreover, the simulation of the environment of the BMS protection board in the field use is realized by the simulation battery module and the simulation temperature module, the structure is simple, and the test process is simplified.
Description
Technical Field
The utility model relates to a BMS protection shield test technical field especially relates to a BMS protection shield test system.
Background
The BMS (Battery Management System) is an electronic control device of the Battery pack, and is used for monitoring parameters of the Battery pack, such as cell voltage, total voltage, temperature, charge and discharge current, and performing equalization Management and safety protection on the Battery pack according to the parameters, so as to prolong the service life of the Battery pack, and improve the charge and discharge performance and operational safety and reliability of the Battery pack. Before applying the BMS protection board to the battery pack, the performance of the BMS protection board needs to be tested.
The traditional test mode is that each item performance parameter of BMS protection shield is tested step by step through the manual work, and efficiency of software testing is low, and moreover, whether the test result accords with the standard among the test procedure is judged by tester's subjective consciousness, because every tester's judgement standard has certain difference, is difficult to guarantee the uniformity of parameter and the setting parameter of dispatching from the factory.
Therefore, it is highly desirable to provide a BMS protection board testing system capable of automatically testing various performances of a BMS protection board to improve the BMS protection board testing efficiency and the consistency of factory setting parameters.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can realize the BMS protection shield test system of each item performance of automatic test BMS protection shield to improve BMS protection shield efficiency of software testing and the uniformity of dispatching from the factory and setting up the parameter.
In order to achieve the above object, the present invention provides a BMS protection board testing system for testing performance of a BMS protection board, the BMS protection board testing system including a main control unit and a voltage source, a current source, a simulation battery module and a simulation temperature module electrically connected to the main control unit, the simulation battery module being electrically connected to the voltage source, the current source, the simulation battery module and the simulation temperature module being respectively electrically connected to the BMS protection board, the current source outputting an activation current to the BMS protection board according to a control command of the main control unit, the voltage source outputting a supply voltage to the simulation battery module according to the control command of the main control unit, the simulation battery module accessing a corresponding number of batteries according to the control command of the main control unit, the simulation temperature module accessing a corresponding number of temperature senses according to the control command of the main control unit, the control host is electrically connected to the BMS protection board and used for sending test instructions to the BMS protection board to test the performance of the BMS protection board.
Preferably, the analog battery module includes a plurality of first control switches and a battery pack for connecting to the BMS protection board, the battery pack includes a plurality of battery cells connected in series, each of the first control switches is connected between a connection position of two adjacent battery cells and the control host, and the plurality of first control switches are turned on or off according to a control command of the control host to control the number of the battery cells connected to the analog battery module.
More preferably, the first control switch is a double control relay.
Preferably, the analog temperature module includes a plurality of second control switches and a plurality of temperature sensors for connecting to the BMS protection board, each of the second control switches is connected between the control host and one of the temperature sensors, and the plurality of second control switches are turned on or off according to a control command of the control host to control the number of the temperature sensors connected to the analog temperature module.
More preferably, the second control switch is a double control relay.
Preferably, the BMS protection board testing system further includes a current control module, the current control module includes a plurality of third control switches, a part of the third control switches are connected between the negative electrode of the current source and the control host, a part of the third control switches are connected between the positive electrode of the current source and the control host, and the plurality of third control switches are turned on or off according to a control command of the control host to control a flow direction of a current output from the current source to the BMS protection board.
Preferably, the BMS protection board testing system further includes a display, the display is electrically connected to the control host, and the display is used for displaying the test data of the BMS protection board.
Preferably, the test data includes at least one of a static consumable parameter, a communication performance, a parameter verification, a voltage calibration, a current calibration, an equalization detection, an overvoltage detection, an undervoltage detection, a charging overcurrent detection, a discharging overcurrent detection, a factory capacity setting detection, a clearing history detection, and a shutdown consumable test.
Compared with the prior art, the utility model realizes the automatic test of various performances of the BMS protection board, improves the test efficiency of the BMS protection board, can avoid the problem of difference between the factory parameters and the set parameters easily caused during manual step test, and ensures the consistency of the factory set parameters; and, the utility model discloses an actual battery system is simulated to the battery figure that the adjustment simulation battery module is connected to the BMS protection shield, and the temperature sensing figure that corresponds is connected in order to simulate the change of actual battery system intermediate temperature through the analog temperature module, borrows the environmental simulation when realizing BMS protection shield field usage by analog battery module and analog temperature module, then sends the capability test that the test instruction realized the BMS protection shield for the BMS protection shield through the main control system, simple structure, and test procedure is simplistic.
Drawings
Fig. 1 is the utility model discloses BMS protection shield test system's component structure schematic diagram.
Fig. 2 is a block diagram of the embodiment of the present invention, which illustrates a battery module, a temperature simulation module, a current source and a control host.
Fig. 3 is a schematic diagram of a portion of a circuit of an analog battery module.
FIG. 4 is a circuit schematic of the analog temperature module and the current control module.
Fig. 5 is a flow chart of the BMS protection board testing system of the present invention during testing.
Detailed Description
To explain the technical content, the structural features, the achieved objects and effects of the present invention in detail, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1 to 4, the present invention provides a BMS protection board testing system 100 for testing performance of a BMS protection board 200, the BMS protection board testing system 100 includes a main control unit 1, and a voltage source 2, a current source 3, a simulated battery module 4 and a simulated temperature module 5 electrically connected to the main control unit 1, the simulated battery module 4 is electrically connected to the voltage source 2, the current source 3, the simulated battery module 4 and the simulated temperature module 5 are respectively electrically connected to the BMS protection board 200, the current source 3 outputs an activation current to the BMS protection board 200 according to a control command of the main control unit 1, the voltage source 2 outputs a supply voltage to the simulated battery module 4 according to the control command of the main control unit 1, the simulated battery module 4 is connected to a corresponding battery number according to the control command of the main control unit 1 to simulate an actual battery system, the simulated temperature module 5 is connected to a corresponding temperature sensing number according to the control command of the main control unit 1 to simulate, the control host 1 is electrically connected to the BMS protection board 200 for sending a test command to the BMS protection board 200 to test the performance of the BMS protection board 200.
Referring to fig. 1, in the present embodiment, the BMS protection board testing system 100 further includes a display 6, the display 6 is electrically connected to the control host 1, and the display 6 is used for displaying the testing data of the BMS protection board 200; the test data includes, but is not limited to, at least one of a static consumable parameter, a communication performance, a parameter verification, a voltage calibration, a current calibration, an equalization detection, an overvoltage detection, an undervoltage detection, a charging overcurrent detection, a discharging overcurrent detection, a factory capacity setting detection, a clearing history detection, and a shutdown consumable test. Borrow the setting by display 6 for the operation personnel can directly perceivedly look over the test result of BMS protection shield 200, and is more convenient.
Referring to fig. 2 and 3, specifically, the analog battery module 4 includes a battery control module 41 and a battery box 42, the battery control module 41 includes a plurality of first control switches 411, the battery box 42 accommodates a battery pack for connecting to the BMS protection board 200, the battery pack includes a plurality of battery units 421 connected in series, each first control switch 411 is connected between a connection position of two adjacent battery units 421 and the control host 1, and the plurality of first control switches 411 are turned on or off according to a control command of the control host 1 to control the number of battery units 421 connected to the analog battery module 4. By controlling the on/off of each first control switch 411, the number of the battery units 421 connected to the battery pack is automatically changed, so that various test requirements are met, and the battery pack testing device is high in flexibility and simple in structure. Preferably, the first control switch 411 is a dual-control relay, two switch units of the first control switch 411 are connected to the battery unit 421, and the two switch units can be disconnected according to a control command of the control host 1, so as to implement dual disconnection. Of course, the above is only a preferred embodiment of the present invention, and the specific implementation of the first control switch 411 is not limited.
Referring to fig. 2 and 4, in particular, the analog temperature module 5 includes a temperature sensing control module 51 and a temperature sensor group 52, the temperature sensing control module 51 includes a plurality of second control switches 511, the temperature sensor group 52 includes a plurality of temperature sensors for connecting to the BMS protection board 200, each of the second control switches 511 is connected between the control host 1 and one of the temperature sensors, and the plurality of second control switches 511 are turned on or off according to a control command of the control host 1 to control the number of the temperature sensors connected to the analog temperature module 5. The number of the temperature sensors connected is automatically changed by controlling the on-off of each second control switch 511, so that the temperature change in various actual battery systems is simulated, various test requirements are met, the flexibility is high, and the structure is simple. Preferably, the second control switch 511 is a dual-control relay, two switch units of the second control switch 511 are connected to the temperature sensor, and the two switch units can be simultaneously turned off according to the control command of the control host 1 to avoid interference. Of course, the above is only a preferred embodiment of the present invention, and the specific implementation of the second control switch 511 is not limited.
Referring to fig. 2 and 4, in particular, the BMS protection board testing system 100 further includes a current control module 7, the current control module 7 includes a plurality of third control switches, a part of the third control switches are connected between the negative electrode of the current source 3 and the control host 1, a part of the third control switches are connected between the positive electrode of the current source 3 and the control host 1, and the plurality of third control switches are turned on or off according to a control command of the control host 1 to control a flow direction of a current output from the current source 3 to the BMS protection board 200. In this embodiment, the current control module 7 includes four third control switches 71-74, two of the third control switches 71 and 73 are connected between the positive electrode of the current source 3 and the control host 1, and the other two third control switches 72 and 74 are connected between the negative electrode of the current source 3 and the control host 1, so that the control host 1 changes the flow direction of the current output from the current source 3 to the BMS protection board 200 by controlling the on/off of each of the third control switches 71, 72, 73 and 74, thereby performing a current calibration test, a charge/discharge overcurrent detection, and the like.
Referring to fig. 5, fig. 5 is a flowchart illustrating an embodiment of a performance test of the BMS protection board 200 by the BMS protection board testing system 100 according to the present invention. In this embodiment, the BMS protection board 200 is first connected to the simulated temperature module 5, the simulated battery module 4 by the connection bus, and the BMS protection board 200 is connected to the current source 3. Then, configuring a serial port, a baud rate, a BMS parameter file, an SPEC file and the like; reading the parameter file and the SPEC file, setting the battery access number and the temperature sensing access number, and acquiring a test standard; thereafter, the test is initiated.
In step S1, a BMS protection board consumable test is performed, specifically: acquiring the number of analog batteries and the number of temperature senses to be accessed, controlling the host 1 to control the corresponding first control switch 411 to be closed so as to enable the analog battery module 4 to access the corresponding number of batteries and to control the corresponding second control switch 511 to be closed so as to enable the analog temperature module 5 to access the corresponding number of temperature senses, then, the control voltage source 2 outputs corresponding voltage to supply power to the analog battery module 4, and controls the current source 3 to output 2A activation current to activate the BMS protection board 200, and then the control host 1 sends an instruction to close the serial port, then, the testing and collection of the static self-consumption of the BMS protecting plate 200 are started, and whether the testing standard is met or not is judged, and then, the control host 1 controls the current source 3 and the voltage source 2 to stop outputting, if the static self-consumption meets the standard, the S2 test is automatically carried out, if the static self-consumption does not meet the standard, the test is terminated, defective product processing is carried out, and meanwhile, the test result is recorded to a log.
In step S2, a BMS protection board communication test is performed, specifically: acquiring the number of analog batteries and the number of temperature senses to be accessed, controlling the host 1 to control the corresponding first control switch 411 to be closed so as to enable the analog battery module 4 to access the corresponding number of batteries and to control the corresponding second control switch 511 to be closed so as to enable the analog temperature module 5 to access the corresponding number of temperature senses, then, the control voltage source 2 outputs corresponding voltage to supply power to the analog battery module 4, and controls the current source 3 to output 2A activation current to activate the BMS protection board 200, and then the control host 1 sends instructions to connect with the BMS serial port, and then transmits a communication detection command to the BMS protection board 200, detects whether there is a corresponding return value, and then, the control host 1 controls the current source 3 and the voltage source 2 to stop outputting, automatically performs the S3 test if the response is returned to the correct symbol, and terminates the test if the response is not returned to the correct symbol, performs defective product processing, and records the test result to a log.
In step S3, performing BMS protection board parameter verification, specifically: acquiring the number of simulated batteries and the number of temperature senses to be accessed, controlling the corresponding first control switch 411 to be closed by the control host 1 so that the simulated battery module 4 is accessed to the corresponding number of batteries and controlling the corresponding second control switch 511 to be closed so that the simulated temperature module 5 is accessed to the corresponding number of temperature senses, then controlling the voltage source 2 to output corresponding voltage to supply power to the simulated battery module 4, controlling the current source 3 to output 2A activation current to activate the BMS protection board 200, then sending a command to connect a BMS serial port by the control host 1, then sending a parameter reading command to the BMS protection board 200, comparing the read parameters with preset BMS parameters one by one to determine whether the read parameters are the same or not, then controlling the current source 3 and the voltage source 2 by the control host 1 to stop outputting, automatically performing an S4 test if the read parameters are the same as the preset BMS parameters, and terminating the test if the read parameters are, and performing defective product treatment, and recording the test result to a log.
In step S4, BMS protection board voltage calibration is performed, specifically: acquiring the number of analog batteries and the number of temperature senses to be accessed, controlling the corresponding first control switch 411 to be closed by the control host 1 so that the analog battery module 4 is accessed to the corresponding number of batteries and controlling the corresponding second control switch 511 to be closed so that the analog temperature module 5 is accessed to the corresponding number of temperature senses, then controlling the voltage source 2 to output corresponding voltage to supply power to the analog battery module 4, controlling the current source 3 to output 2A activation current to activate the BMS protection board 200, then sending a command to connect with a BMS serial port by the control host 1, and then sending a voltage calibration command to the BMS protection board 200, wherein the calibration voltage value is the output voltage of the voltage source 2, if the calibration response command returned by the BMS protection board 200 is response OK, sending a voltage acquisition command again by the control host 1, comparing the acquired voltage with the voltage output by the voltage source 2, and then controlling the current source 3 by the control host 1, And the voltage source 2 stops outputting, if the voltage comparison result meets the preset test standard range, the S5 test is automatically carried out, if the voltage comparison result does not meet the preset test standard range, the test is terminated, defective product processing is carried out, and meanwhile, the test result is recorded to a log.
In step S5, BMS protection board current calibration is performed, specifically: acquiring the number of analog batteries and the number of temperature senses to be accessed, controlling the corresponding first control switch 411 to be closed by the control host 1 so that the analog battery module 4 is accessed to the corresponding number of batteries and controlling the corresponding second control switch 511 to be closed so that the analog temperature module 5 is accessed to the corresponding number of temperature senses, then controlling the voltage source 2 to output corresponding voltage to supply power to the analog battery module 4, controlling the current source 3 to output 2A activation current to activate the BMS protection board 200, then sending an instruction to connect the BMS serial port by the control host 1, controlling the current source 3 to output a preset current value to the BMS protection board 200 by the control host 1, then sending a current calibration instruction to the BMS protection board 200, judging whether the BMS protection board 200 returns to be calibrated correctly, if so, sending a current acquisition instruction again by the control host 1, comparing the acquired current with the current output by the current source 3, and then, the control host 1 controls the current source 3 and the voltage source 2 to stop outputting, if the current comparison result meets a preset test standard range, the S6 test is automatically carried out, if not, the test is terminated, defective product processing is carried out, and meanwhile, the test result is recorded to a log.
In step S6, BMS protection board equalization detection is performed, specifically: acquiring the number of analog batteries and the number of temperature senses to be accessed, controlling the corresponding first control switch 411 to be closed by the control host 1 so that the analog battery module 4 is accessed to the corresponding number of batteries and controlling the corresponding second control switch 511 to be closed so that the analog temperature module 5 is accessed to the corresponding number of temperature senses, then controlling the voltage source 2 to output corresponding voltage to supply power to the analog battery module 4, controlling the current source 3 to output 2A activation current to activate the BMS protection board 200, then sending an instruction to connect with a BMS serial port by the control host 1, then sending a voltage output instruction to the voltage source 2 and sending an alarm acquisition instruction to the BMS protection board 200 according to configured equalization opening parameters by the control host 1, and analyzing whether to open equalization, then controlling the current source 3 and the voltage source 2 to stop outputting by the control host 1, if return to respond to open equalization, circularly testing whether each battery unit 421 can open equalization, if the balance can be started, the test of S7 is automatically performed, if one of the battery units 421 can not start the balance, the test is terminated, the defective product processing is performed, and the test result is recorded to the log.
In step S7, BMS protection board overvoltage detection is performed, specifically: acquiring the number of analog batteries and the number of temperature senses to be accessed, controlling the corresponding first control switch 411 to be closed by the control host 1 so that the analog battery module 4 is accessed to the corresponding number of batteries and controlling the corresponding second control switch 511 to be closed so that the analog temperature module 5 is accessed to the corresponding number of temperature senses, then controlling the voltage source 2 to output corresponding voltage to supply power to the analog battery module 4, controlling the current source 3 to output 2A activation current to activate the BMS protection board 200, then sending an instruction to connect with a BMS serial port by the control host 1, then sending a voltage output instruction to the voltage source 2 and sending an alarm acquisition instruction to the BMS protection board 200 according to configured overvoltage parameters by the control host 1, analyzing whether overvoltage is turned off or not, and if an overvoltage flag is returned in response to, sending the voltage output instruction to the voltage source 2 and sending the alarm acquisition instruction to the BMS protection board 200 according to configured overvoltage recovery parameters, analyzing whether the overvoltage alarm state is relieved or not, circularly testing whether each battery unit 421 can start the overvoltage alarm and recover, then controlling the host 1 to control the current source 3 and the voltage source 2 to stop outputting, if both can be started, automatically performing the S8 test, if one battery unit 421 cannot be started, terminating the test, processing defective products, and simultaneously recording the test result to a log.
In step S8, carry out BMS protection board under-voltage detection, specifically be: acquiring the number of analog batteries and the number of temperature senses to be accessed, controlling the corresponding first control switch 411 to be closed by the control host 1 so that the analog battery module 4 is accessed to the corresponding number of batteries and controlling the corresponding second control switch 511 to be closed so that the analog temperature module 5 is accessed to the corresponding number of temperature senses, then controlling the voltage source 2 to output corresponding voltage to supply power to the analog battery module 4, controlling the current source 3 to output 2A activation current to activate the BMS protection board 200, then sending an instruction to connect with a BMS serial port by the control host 1, then sending a voltage output instruction to the voltage source 2 and sending an alarm acquisition instruction to the BMS protection board 200 according to the configured parameters by the control host 1, analyzing whether under-voltage shutdown is output or not, and if a response under-voltage sign is returned, sending a voltage output instruction to the voltage source 2 and sending an alarm acquisition instruction to the BMS protection board 200 according to the configured, analyzing whether the under-voltage alarm state is relieved or not, circularly testing whether each battery unit 421 can start the under-voltage alarm and recover or not, then controlling the host 1 to control the current source 3 and the voltage source 2 to stop outputting, if both can be started, automatically carrying out the S9 test, if one battery unit 421 can not be started, terminating the test, carrying out defective product processing, and simultaneously recording the test result to a log.
In step S9, BMS protection board charging overcurrent detection is performed, specifically: acquiring the number of analog batteries and the number of temperature senses to be accessed, controlling the corresponding first control switch 411 to be closed by the control host 1 so that the analog battery module 4 is accessed to the corresponding number of batteries and controlling the corresponding second control switch 511 to be closed so that the analog temperature module 5 is accessed to the corresponding number of temperature senses, then controlling the voltage source 2 to output corresponding voltage to supply power to the analog battery module 4, controlling the current source 3 to output 2A activation current to activate the BMS protection board 200, then sending an instruction to connect with a BMS serial port by the control host 1, then sending a voltage output instruction to the voltage source 2 and sending an alarm acquisition instruction to the BMS protection board 200 according to the configured charging overcurrent parameters, analyzing whether charging overcurrent is cut-off or not, then controlling the current source 3 and the voltage source 2 to stop outputting by the control host 1, and automatically performing S10 test if an undercharging overcurrent flag is returned and responded, if not, the test is terminated, the defective product processing is carried out, and the test result is recorded to a log.
In step S10, BMS protection board discharge overcurrent detection is performed, specifically: acquiring the number of analog batteries and the number of temperature senses to be accessed, controlling the corresponding first control switch 411 to be closed by the control host 1 so that the analog battery module 4 is accessed to the corresponding number of batteries and controlling the corresponding second control switch 511 to be closed so that the analog temperature module 5 is accessed to the corresponding number of temperature senses, then controlling the voltage source 2 to output corresponding voltage to supply power to the analog battery module 4, controlling the current source 3 to output 2A activation current to activate the BMS protection board 200, then sending an instruction to connect with a BMS serial port by the control host 1, then sending a voltage output instruction to the voltage source 2 and sending an alarm acquisition instruction to the BMS protection board 200 according to the configured discharge overcurrent parameters, analyzing whether discharge overcurrent turn-off output exists, then controlling the current source 3 and the voltage source 2 to stop outputting by the control host 1, and automatically performing S11 overcurrent test if a charge flag is returned in response, if not, the test is terminated, the defective product processing is carried out, and the test result is recorded to a log.
In step S11, a BMS protection board factory capacity setting test is performed, specifically: acquiring the number of analog batteries and the number of temperature senses to be accessed, controlling the host 1 to control the corresponding first control switch 411 to be closed so as to enable the analog battery module 4 to access the corresponding number of batteries and to control the corresponding second control switch 511 to be closed so as to enable the analog temperature module 5 to access the corresponding number of temperature senses, then, the control voltage source 2 outputs corresponding voltage to supply power to the analog battery module 4, and controls the current source 3 to output 2A activation current to activate the BMS protection board 200, and then the control host 1 sends instructions to connect with the BMS serial port, the control host 1 then transmits preset factory capacity parameters to the BMS protection board 200, and then, the control host 1 controls the current source 3 and the voltage source 2 to stop outputting, if the BMS protection board 200 returns to the setting success flag, the test of S12 is automatically carried out, if no return is made, the test is terminated, the defective product is processed, and the test result is recorded in a log.
In step S12, a BMS protection board clearing history test is performed, specifically: acquiring the number of analog batteries and the number of temperature senses to be accessed, controlling the host 1 to control the corresponding first control switch 411 to be closed so as to enable the analog battery module 4 to access the corresponding number of batteries and to control the corresponding second control switch 511 to be closed so as to enable the analog temperature module 5 to access the corresponding number of temperature senses, then, the control voltage source 2 outputs corresponding voltage to supply power to the analog battery module 4, and controls the current source 3 to output 2A activation current to activate the BMS protection board 200, and then the control host 1 sends instructions to connect with the BMS serial port, then the control host 1 sends a command for clearing the history to the BMS protection board 200, and then the control host 1 controls the current source 3 and the voltage source 2 to stop outputting, if the BMS protection board 200 returns a setting success flag, the test of S13 is automatically carried out, if no return is made, the test is terminated, the defective product is processed, and the test result is recorded in a log.
In step S13, a BMS protection board shutdown consumable test is performed, specifically: acquiring the number of analog batteries and the number of temperature senses to be accessed, controlling the host 1 to control the corresponding first control switch 411 to be closed so as to enable the analog battery module 4 to access the corresponding number of batteries and to control the corresponding second control switch 511 to be closed so as to enable the analog temperature module 5 to access the corresponding number of temperature senses, then, the control voltage source 2 outputs corresponding voltage to supply power to the analog battery module 4, and controls the current source 3 to output 2A activation current to activate the BMS protection board 200, and then the control host 1 sends instructions to connect with the BMS serial port, then, the control host 1 sends a shutdown command to the BMS protection board 200, and if the BMS protection board 200 returns a success flag, and acquiring whether the shutdown self-consumption of the BMS protection board 200 meets a preset standard, if so, outputting a test passing mark, if not, outputting a test failing mark, processing defective products, and simultaneously recording a test result to a log.
Compared with the prior art, the utility model realizes the automatic testing of various performances of the BMS protection board 200, improves the testing efficiency of the BMS protection board 200, can avoid the problem of difference between the factory parameters and the set parameters easily caused during manual step-by-step testing, and ensures the consistency of the factory setting parameters; furthermore, the utility model discloses an actual battery system is simulated to the battery figure that adjustment simulation battery module 4 is connected to BMS protection shield 200, the temperature sensing figure that corresponds is in order to simulate the change of actual battery system temperature through 5 accesses of simulation temperature module, borrow the environmental simulation when realizing BMS protection shield 200 field usage by simulation battery module 4 and simulation temperature module 5, then send the capability test that test instruction realized BMS protection shield 200 for BMS protection shield 200 through main control system 1, moreover, the steam generator is simple in structure, the testing process is simplified.
The scope of the invention should not be limited by the above disclosure, but should be defined only by the appended claims and equivalents thereof.
Claims (8)
1. A BMS protection board test system is used for testing the performance of a BMS protection board and is characterized by comprising a control host, and a voltage source, a current source, a simulation battery module and a simulation temperature module which are electrically connected with the control host, wherein the simulation battery module is electrically connected with the voltage source, the current source, the simulation battery module and the simulation temperature module are respectively used for being electrically connected with the BMS protection board, the current source outputs an activation current to the BMS protection board according to a control command of the control host, the voltage source outputs a power supply voltage to the simulation battery module according to the control command of the control host, the simulation battery module is connected with the corresponding battery number according to the control command of the control host, the simulation temperature module is connected with the corresponding temperature sensing number according to the control command of the control host, the control host is electrically connected to the BMS protection board and used for sending test instructions to the BMS protection board to test the performance of the BMS protection board.
2. The BMS protection board test system according to claim 1, wherein the analog battery module includes a plurality of first control switches and a battery pack for connecting to the BMS protection board, the battery pack includes a plurality of battery cells connected in series, each of the first control switches is connected between a connection position of two adjacent battery cells and the control host, and the plurality of first control switches are turned on or off according to a control command of the control host to control the number of the battery cells connected to the analog battery module.
3. The BMS protection board test system of claim 2, wherein the first control switch is a double control relay.
4. The BMS protection board testing system of claim 1, wherein the analog temperature module comprises a plurality of second control switches and a plurality of temperature sensors for connecting to the BMS protection board, each of the second control switches is connected between the control host and one of the temperature sensors, and the plurality of second control switches are turned on or off according to a control command of the control host to control the number of the temperature sensors to which the analog temperature module is connected.
5. The BMS protection board test system of claim 4, wherein the second control switch is a double control relay.
6. The BMS protection board testing system of claim 1, further comprising a current control module including a plurality of third control switches, a part of the third control switches being connected between the negative electrode of the current source and the control host, a part of the third control switches being connected between the positive electrode of the current source and the control host, the plurality of third control switches being turned on or off according to a control command of the control host to control a flow direction of current output from the current source to the BMS protection board.
7. The BMS protection board testing system according to claim 1, further comprising a display electrically connected to the control host, the display for displaying test data of the BMS protection board.
8. The BMS protection board test system of claim 7, wherein the test data includes at least one of static consumable parameters, communication performance, parameter verification, voltage calibration, current calibration, equalization detection, overvoltage detection, undervoltage detection, charge overcurrent detection, discharge overcurrent detection, factory capacity setting detection, purge history detection, and shutdown consumable testing.
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| CN201921999055.2U CN211478544U (en) | 2019-11-18 | 2019-11-18 | BMS protection board test system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112285463A (en) * | 2020-10-13 | 2021-01-29 | 安徽锐能科技有限公司 | Testing device and method for lithium battery protection board and storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112285463A (en) * | 2020-10-13 | 2021-01-29 | 安徽锐能科技有限公司 | Testing device and method for lithium battery protection board and storage medium |
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