CN215180568U

CN215180568U - BMS function test system for new energy automobile

Info

Publication number: CN215180568U
Application number: CN202120831338.7U
Authority: CN
Inventors: 刁节元; 程浩
Original assignee: Hefei Guoxuan High Tech Power Energy Co Ltd
Current assignee: Hefei Gotion High Tech Power Energy Co Ltd
Priority date: 2021-04-20
Filing date: 2021-04-20
Publication date: 2021-12-14
Anticipated expiration: 2031-04-20

Abstract

A BMS function testing system for a new energy automobile belongs to the technical field of detection of power battery management systems, and solves the problem of how to design a BMS function testing device for the new energy automobile, which simulates the actual environment of the BMS of the new energy automobile and rapidly detects related functions of software and hardware of the BMS, and new energy automobile control signals such as 0N gear, ACC gear, CC2, CC and the like are sent to a BMS main control module (1) in a simulated mode through a signal input module (3) so as to test the receiving detection processing function of the BMS software and hardware on the signals; the control function of BMS software and hardware on the high-voltage relay of the new energy automobile is tested by turning on and off the LED lamp of the relay state display module (7); different voltage signals are sent to the BMS main control module (1) through the high-voltage detection module (2) so as to detect the detection processing and protection functions of the BMS software and hardware on the circuit; therefore, the actual working environment of the BMS of the new energy automobile is simulated, the related functions of the BMS software and hardware are rapidly detected, an accurate test result is provided, the detection efficiency is high, manpower and material resources are saved, and the safety and the reliability of the battery management system are obviously improved.

Description

BMS function test system for new energy automobile

Technical Field

The utility model belongs to the technical field of power battery management system's detection, a test system of BMS function for new energy automobile is related to.

Background

Under the advocation and support of China, the rapid development of 'green energy and green travel' is promoted, and under the environment and the background, the new energy automobile industry develops rapidly and obtains extra attention; the power battery management system is used as a new energy automobile power management and data monitoring component, and the safety and the reliability of the power battery management system are concerned.

In the actual use process of an automobile, the power output or input of a battery system changes at any moment, the dynamic data of the battery system is more complex and diversified, the stable output and the safe use of the battery are directly influenced, the dynamic balance and the service life of the battery are influenced for a long time, and the safety of the whole automobile, a driver and passengers is related, so that the BMS function of the project needs to be comprehensively simulated and tested in the project development stage of a power Battery Management System (BMS), whether the battery management system of the project meets the requirements or not is determined, and the new energy automobile can run safely and reliably enough.

SUMMERY OF THE UTILITY MODEL

The utility model aims to how to design a BMS functional test device for new energy automobile of simulation new energy automobile BMS actual environment, the relevant function of short-term test BMS software and hardware.

The utility model discloses a solve above-mentioned technical problem through following technical scheme:

a test system for BMS functions for a new energy automobile comprises: the system comprises a BMS main control module (1), a high-voltage detection module (2), a signal input module (3), a direct-current stabilized power supply (4), a BMS upper computer (5), a BMS slave control module (6) and a relay state display module (7); the BMS master control module (1) is respectively connected with the high-voltage detection module (2), the signal input module (3), the direct-current stabilized power supply (4), the BMS upper computer (5), the BMS slave control module (6) and the relay state display module (7); and the direct-current stabilized power supply (4) is respectively connected with the high-voltage detection module (2) and the signal input module (3).

The method comprises the following steps that (1) new energy automobile control signals such as 0N gear, ACC gear, CC2, CC and the like are sent to a BMS main control module (1) in a simulated mode through a signal input module (3) so as to test the receiving, detecting and processing functions of BMS software and hardware on the signals; the control function of BMS software and hardware on the high-voltage relay of the new energy automobile is tested by turning on and off the LED lamp of the relay state display module (7); different voltage signals are sent to the BMS main control module (1) through the high-voltage detection module (2) so as to detect the detection processing and protection functions of the BMS software and hardware on the circuit; therefore, the actual working environment of the BMS of the new energy automobile is simulated, the related functions of the BMS software and hardware are rapidly detected, an accurate test result is provided, the detection efficiency is high, manpower and material resources are saved, and the safety and the reliability of the battery management system are obviously improved.

As the utility model discloses technical scheme's further improvement, high-pressure detection module (2) include a plurality of manual high-voltage electrical switch (21) that open and shut, it is a plurality of the input of high-voltage electrical switch (21) link together the back rethread insulated wire (11) and the high-voltage output port of DC voltage-stabilized power supply (4) be connected, a plurality of the output of high-voltage electrical switch (21) respectively through high-voltage insulation pencil (12) and BMS host system (1) high-pressure signal detection mouth be connected.

As a further improvement of the technical solution of the present invention, the signal input module (3) comprises a plurality of manually opened and closed low-voltage electrical switches (31) and a required signal generator (32), the input ends of the plurality of low-voltage electrical switches (31) are connected together and then connected with the low-voltage output port of the dc regulated power supply (4) through an insulated wire (11), the output end of one of the plurality of low-voltage electrical switches (31) is connected in series with the input end of the signal generator (32), and the output end of the signal generator (32) is correspondingly connected to the low-voltage signal detection port of the BMS main control module (1) through a low-voltage insulated wire harness (13); the output ends of the rest low-voltage electric switches (31) are also correspondingly connected to the low-voltage signal detection port of the BMS main control module (1) through low-voltage insulation wiring harnesses (13).

As the utility model discloses technical scheme's further improvement, BMS host computer (5) include host computer (51) and CAN analysis appearance (52), the one end of CAN analysis appearance (52) adopt CAN communication line (14) to be connected with BMS host system (1), the other end adopts CAN communication line (14) to be connected with host computer (51).

As a further improvement of the technical scheme of the utility model, the power input port of the BMS slave control module (6) is connected with the power output port of the BMS master control module (1) through an insulated wire (11); and the BMS master control module (1) is connected with the BMS slave control module (6) through a CAN communication line (14).

As the utility model discloses technical scheme's further improvement, relay state display module (7) include a plurality of LED lamps (71), it is a plurality of the one end of LED lamp (71) link together back ground connection, it is a plurality of the other end of LED lamp (71) correspond through low pressure insulation pencil (13) respectively and be connected with BMS main control module (1).

The utility model has the advantages that:

(1) the utility model discloses a signal input module (3) send 0N shelves, ACC shelves, CC2, CC, wait new energy automobile control signal for BMS main control module (1) simulation to test BMS software and hardware to the acceptance detection processing function of this type of signal; the control function of BMS software and hardware on the high-voltage relay of the new energy automobile is tested by turning on and off the LED lamp of the relay state display module (7); different voltage signals are sent to the BMS main control module (1) through the high-voltage detection module (2) so as to detect the detection processing and protection functions of the BMS software and hardware on the circuit; therefore, the actual working environment of the BMS of the new energy automobile is simulated, the related functions of the BMS software and hardware are rapidly detected, an accurate test result is provided, the detection efficiency is high, manpower and material resources are saved, and the safety and the reliability of the battery management system are obviously improved.

Drawings

Fig. 1 is a block diagram of a BMS function testing system for a new energy vehicle according to an embodiment of the present invention;

fig. 2 is the detailed structure of the test system of BMS function for new energy automobile of the utility model embodiment.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are 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.

The technical solution of the present invention is further described below with reference to the drawings and specific embodiments of the specification:

example one

As shown in fig. 1 and 2, the system for testing the BMS function for the new energy automobile comprises a BMS main control module 1, a BMS slave control module 6, a relay state display module 7, a direct current stabilized power supply 4, a signal input module 3, a high voltage detection module 2 and a BMS upper computer 5. The direct current stabilized power supply 4 is a power supply capable of adjusting output voltage and is connected with the BMS main control module 1, the high voltage detection module 2 and the signal input module 3 through insulated wires 11; the high-voltage detection module 2 consists of a plurality of high-voltage electric switches 21 capable of being manually opened and closed, the input end of the high-voltage electric switches is connected with the high-voltage positive electrode of the direct-current stabilized power supply 4 through an insulated wire 11, the output end of the high-voltage electric switches is connected to the positive end of a high-voltage detection port of the BMS main control module 1 through a high-voltage insulated wire harness 12, and the negative end of the high-voltage detection port is connected to the high-voltage negative electrode of the direct-current stabilized power supply 4 through an insulated wire; the signal input module 3 consists of a plurality of low-voltage electric switches 31 which can be manually opened and closed and a signal generator 32, the input end of the signal input module is connected with the low-voltage anode of the direct-current stabilized power supply 4 through an insulated wire 11, and the output end of the signal input module is connected with the low-voltage signal detection port of the BMS main control module 1 through a low-voltage insulated wire harness 13; the BMS main control module 1 is a main board of a battery management system to be tested, and comprises a corresponding software program loaded, and the positive electrode and the negative electrode are connected to a low-voltage output end on a direct-current stabilized power supply 4 through insulated wires 11 and are powered by the low-voltage output end; the BMS slave control module 6 is a slave plate of a corresponding battery management system, and the positive electrode and the negative electrode are connected to a power supply output end on the BMS master control module 1 through insulated wires 11, are supplied with power by the power supply output end and are connected with a CAN communication network through a CAN communication line 14; the relay state display module 7 is a circuit board containing an LED lamp 71, the input end of the relay state display module is connected with the relay control positive terminal of the BMS main control module 1 through a low-voltage insulation wire harness 13, and the output end of the relay state display module can be connected to the corresponding relay control negative pin of the BMS main control module 1 through an insulation wire or connected to the low-voltage negative terminal of the direct-current stabilized power supply 4 in parallel; the BMS host computer 5 is a BMS host computer system 51 matched with the BMS host module 1 and includes a CAN analyzer 52, and is connected with the BMS host module 1 through the CAN analyzer 52 through the CAN communication line 14 to constitute a CAN communication network.

The CAN communication line 14 is composed of two mutually insulated wires with shielding layers, namely CAN-H and CAN-L; the BMS host computer 5 is connected to the entire vehicle CAN communication line of the BMS hosting module 1 by the CAN communication line 14 through the CAN analyzer 52, and the BMS slave module 6 is connected to the sub-network CAN communication line of the BMS hosting module 1 by the CAN communication line 14.

The BMS slave control module 6 CAN be replaced by a BMS simulation slave system on a computer, the method does not need to supply power through an insulated wire 11, but needs to add one more CAN analyzer 52, forms a communication network with the BMS master control module 1 through a CAN communication wire 14, sets the sending parameters of the simulation slave to be matched with the item to be tested, and CAN also change parameter information at any time to simulate the complex diversity of the actual working condition so as to detect whether the BMS master control module 1 CAN receive and process the corresponding data in time; the method is simpler, faster and more convenient, but a BMS simulation slave system of a corresponding product needs to be developed.

The insulated wires 11 at the input end of the high-voltage detection module 2 are high-voltage insulated wires, the bearing voltage range is 200-750V, and the rest insulated wires 11 are low-voltage insulated wires, and the bearing voltage range is 0-36V; the direct current stabilized power supply 4 supplies a voltage of 12V or 24V to the BMS host control module 1 depending on a specific item; the direct-current stabilized power supply 4 supplies corresponding low voltage to the signal input module 3 according to specific items; the DC voltage regulator 4 supplies 200-750V DC voltage to the high voltage detection module 2 according to specific items.

The dc regulated power supply 4 has both a high voltage power supply and a low voltage power supply, and can be used by combining the low voltage power supply and the high voltage power supply. Simply, if the high-voltage power supply is not available, the low-voltage power supply can be used for supplying low-voltage power for replacement, so that a voltage amplification factor is additionally added to a software program of the BMS main control module 1 to simulate a high-voltage numerical value; the device has the advantages of convenience, simplicity and easiness in operation, few prepared equipment, safety for testers, and incapability of simulating the insulation condition, the high-voltage isolation detection condition and the like in a high-voltage environment.

The utility model discloses a theory of operation:

1. signal input detection: adjusting a direct current stabilized voltage power supply 4, supplying corresponding voltage requirements to all modules, and turning on a BMS upper computer 5; manually switching on/off the low-voltage electrical switch 31 or the signal generator 32 of the signal line to be detected, and observing data displayed by the host 51; if the low-voltage electric switch of the ON gear signal is turned ON, the BMS is observed ON the host 51 to be woken up or not, the low-voltage electric switch of the CC2 signal is turned ON, and the corresponding index is observed ON the host 51 to be displayed or not; therefore, in the process of simulating actual use, the BMS has the function of processing and responding correctly after receiving the related low-voltage signals on the whole vehicle.

2. High-voltage acquisition and detection: adjusting a direct current stabilized voltage power supply 4, supplying corresponding voltage requirements to all modules, and turning on a BMS upper computer 5; manually opening and closing a high-voltage electrical appliance switch of a high-voltage acquisition line to be detected, and observing data displayed on a high-voltage detection interface of the host 51; if the switch is off, the displayed voltage should be 0V, and after the switch is closed, the host 51 displays whether the corresponding collected voltage is equal to the voltage supplied by the regulated power supply; therefore, in the process of practical use, the BMS collects the voltage conditions of the front end and the rear end of the high-voltage line electrical element on the whole vehicle, and whether the related voltage function can be accurately and timely collected and detected is simulated.

3. And (3) slave computer data acquisition and processing: adjusting a direct current stabilized voltage power supply 4, supplying corresponding voltage requirements to all modules, and turning on a BMS upper computer 5; if the related function condition of the BMS slave machine does not need to be detected, the simulation slave machine system is proposed to be used, the related battery unit information on the simulation slave machine, such as the monomer voltage or the temperature sensing temperature, is changed, and the corresponding battery real-time data displayed on the observation host machine 51 is observed, so that whether the updating and the response are carried out in time or not is judged; therefore, in the process of simulating actual use, the BMS on the whole vehicle can not effectively acquire and monitor the working state and data of the whole battery system in real time and carry out corresponding processing.

4. And (3) relay control test: adjusting a direct current stabilized voltage power supply 4, supplying corresponding voltage requirements to all modules, and turning on a BMS upper computer 5; inputting corresponding signals and relevant instructions of a VCU of the whole vehicle sent by a computer in a simulation way, observing the BMS working state displayed on the host 51 and the processing flow in the relevant conversion process, and observing whether an LED lamp on the relay state display module 7 corresponds to an enabling signal port on the host 51; if in the charging mode, the host 51 should display the enabling signal of the control pin port of the charging relay, and the corresponding LED lamp on the relay display module is turned on; in order to this simulation in-service use process, BMS can be accurate effectual actuation relevant relay in the different mode on whole car, carries out relevant function work.

5. And (4) fault alarm: adjusting a direct current stabilized voltage power supply 4, supplying corresponding voltage requirements to all modules, and turning on a BMS upper computer 5; and adjusting the information of the BMS slave control module 6 which is input or collected relatively according to the fault threshold value of the specific project data, observing whether the fault alarm interface on the host 51 sends out an alarm timely and accurately, and making corresponding emergency treatment measures. If the voltage or temperature of the single body of the analog slave computer system is adjusted to exceed the alarm threshold value, whether a corresponding alarm is sent out on the host 51 or not is observed, and if the limit fault occurs, the BMS has the condition that a high-voltage power circuit is cut off or not in time; if the acquisition voltage input to the high-voltage acquisition module is changed, the acquisition voltage is not matched with the enabling signal of the corresponding relay control pin port displayed on the host 51, whether the host 51 accurately and effectively reports the relay adhesion fault or not is observed, and corresponding emergency treatment measures are carried out.

The above is only an example of a few representative functional principles, and in addition, almost all situations encountered during the actual use can be simulated by using the system, so as to check the safety, reliability and the like of the related BMS software and hardware. A large amount of manpower and material resources can be saved, the testing time is saved, and the testing result is quickly and effectively provided.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a test system of BMS function for new energy automobile which characterized in that includes: the system comprises a BMS main control module (1), a high-voltage detection module (2), a signal input module (3), a direct-current stabilized power supply (4), a BMS upper computer (5), a BMS slave control module (6) and a relay state display module (7); the BMS master control module (1) is respectively connected with the high-voltage detection module (2), the signal input module (3), the direct-current stabilized power supply (4), the BMS upper computer (5), the BMS slave control module (6) and the relay state display module (7); and the direct-current stabilized power supply (4) is respectively connected with the high-voltage detection module (2) and the signal input module (3).

2. The system for testing the BMS function for the new energy automobile according to claim 1, wherein the high voltage detection module (2) comprises a plurality of manually opened and closed high voltage electrical switches (21), the input ends of the plurality of high voltage electrical switches (21) are connected together and then connected with the high voltage output port of the DC stabilized power supply (4) through an insulated wire (11), and the output ends of the plurality of high voltage electrical switches (21) are respectively connected with the high voltage signal detection port of the BMS main control module (1) through a high voltage insulated wire harness (12).

3. The BMS function testing system for the new energy automobile as claimed in claim 1, wherein the signal input module (3) comprises a plurality of manually opened and closed low voltage electrical switches (31) and a required signal generator (32), the input ends of the plurality of low voltage electrical switches (31) are connected together and then connected with the low voltage output port of the DC stabilized power supply (4) through an insulated wire (11), the output end of one of the plurality of low voltage electrical switches (31) is connected with the input end of the signal generator (32) in series, and the output end of the signal generator (32) is correspondingly connected to the low voltage signal detection port of the BMS main control module (1) through a low voltage insulated wire harness (13); the output ends of the rest low-voltage electric switches (31) are also correspondingly connected to the low-voltage signal detection port of the BMS main control module (1) through low-voltage insulation wiring harnesses (13).

4. The system for testing the BMS function for the new energy automobile as claimed in claim 1, wherein the BMS host computer (5) comprises a host (51) and a CAN analyzer (52), one end of the CAN analyzer (52) is connected with the BMS main control module (1) by a CAN communication line (14), and the other end of the CAN analyzer is connected with the host (51) by the CAN communication line (14).

5. The system for testing the BMS function for the new energy automobile as claimed in claim 1, wherein the power input port of the BMS slave control module (6) is connected with the power output port of the BMS master control module (1) through an insulated wire (11); and the BMS master control module (1) is connected with the BMS slave control module (6) through a CAN communication line (14).

6. The system for testing the BMS function for the new energy automobile as claimed in claim 1, wherein the relay state display module (7) comprises a plurality of LED lamps (71), one ends of the LED lamps (71) are connected together and then grounded, and the other ends of the LED lamps (71) are correspondingly connected with the BMS main control module (1) through low voltage insulation wire harnesses (13).