Battery management system testing device and equipment

Abstract

The utility model relates to a battery management system test device and equipment, a to-be-tested battery management system is arranged on a substrate and is connected with a battery simulator, and an auxiliary test component comprising a current detector, a power supply assembly and an instruction execution feedback assembly is arranged on the substrate. Thus, in the actual test process of the to-be-tested battery management system, the power supply assembly supplies power to the to-be-tested battery management system; in combination with a current detector, simulated battery operation parameters and simulated battery current parameters when the battery simulator simulates charging and discharging operation of the battery can be acquired; and issuing the control command to an instruction execution feedback component to judge whether the control command is executed or not. Through the scheme, test items required by the battery management system can be realized without additional parts such as a high-voltage copper bar, a fuse, a pre-charging resistor, a pre-charging relay and the like, the whole test framework is simple and clear, and the test operation convenience can be effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of reliability testing, and in particular to a battery management system testing device and equipment. Background Art

[0002] The Battery Management System (BMS) is used to intelligently manage and maintain each battery unit, monitor the battery status to prevent overcharging and over-discharging of the battery, and is of great significance to extending the battery life. In order to ensure the reliable operation of the battery management system, it is necessary to conduct random inspections on the battery management system to verify whether the accuracy, protection function, durability, etc. of the battery management system meet the requirements.

[0003] However, in the related art, the test operation convenience of the battery management system is low. Utility Model Content

[0004] Based on this, it is necessary to propose a battery management system testing device and equipment to improve the convenience of testing operation of the battery management system.

[0005] In the first aspect, the present application provides a battery management system testing device, comprising a substrate, a battery management system to be tested and auxiliary testing components, wherein the battery management system to be tested is arranged on the substrate, and the battery management system to be tested is used to connect to a battery simulator to collect simulated battery operating parameters; the auxiliary testing components include a current detector, a power supply component and an instruction execution feedback component, wherein the current detector, the power supply component and the instruction execution feedback component are respectively arranged on the substrate, and the current detector, the power supply component and the instruction execution feedback component are respectively connected to the battery management system to be tested; wherein the current detector is used to connect to the battery simulator to collect simulated battery current parameters; the power supply component is used to power the battery management system to be tested; and the instruction execution feedback component is used to respond to control commands sent by the battery management system to be tested.

[0006] In the above-mentioned battery management system test device, the battery management system to be tested is arranged on a substrate and connected to a battery simulator, and auxiliary test components including a current detector, a power supply component and an instruction execution feedback component are arranged on the substrate. In this way, during the actual test process of the battery management system to be tested, the battery management system to be tested is powered by the power supply component; in combination with the current detector, the battery simulator can be used to collect simulated battery operating parameters and simulated battery current parameters during battery charging and discharging operation; and the control command is sent to the instruction execution feedback component to determine whether it is executed. Through this solution, the test items required for the battery management system can be realized without the need for additional components such as high-voltage copper busbars, fuses, pre-charging resistors, pre-charging relays, etc. The entire test architecture is concise and clear, which can effectively improve the convenience of test operations.

[0007] In some embodiments, the battery management system testing device also includes a current acquisition circuit, an instruction issuing circuit and a power supply circuit, and the current acquisition circuit, the instruction issuing circuit and the power supply circuit are fixedly arranged on the substrate; the two ends of the current acquisition circuit are respectively connected to the battery management system to be tested and the battery simulator, and the current detector is arranged on the current acquisition circuit; the two ends of the instruction issuing circuit are respectively connected to the battery management system to be tested and the instruction execution feedback component; the two ends of the power supply circuit are respectively connected to the battery management system to be tested and the power supply component; the current detector, the power supply component and the instruction execution feedback component are respectively detachably arranged on the substrate.

[0008] In the above scheme, the current acquisition circuit, instruction issuing circuit and power supply circuit used to connect the battery management system to be tested and the auxiliary test components are fixedly set on the substrate, while the current detector, power supply component and instruction execution feedback component are detachably set on the substrate. In this way, when the current detector, power supply component or instruction execution feedback component needs to be replaced due to failure or other reasons, there is no need to reconnect the wiring, which effectively improves the convenience and efficiency of the test.

[0009] In some embodiments, the battery management system to be tested includes a battery monitoring circuit, an insulation monitoring circuit and a battery management unit, and the battery management system testing device also includes an insulation monitoring circuit, a temperature monitoring circuit, a single cell voltage monitoring circuit, a voltage source monitoring circuit, a second communication circuit and a third communication circuit; the insulation monitoring circuit, the temperature monitoring circuit, the single cell voltage monitoring circuit, the voltage source monitoring circuit, the second communication circuit and the third communication circuit are all fixedly arranged on the substrate; the battery monitoring circuit, the insulation monitoring circuit and the battery management unit are respectively detachably arranged on the substrate; the two ends of the insulation monitoring circuit are respectively connected to the insulation monitoring circuit and the battery simulator, the two ends of the temperature monitoring circuit are respectively connected to the battery monitoring circuit and the battery simulator, the two ends of the single cell voltage monitoring circuit are respectively connected to the battery monitoring circuit and the battery simulator, the two ends of the voltage source monitoring circuit are respectively connected to the battery management unit and the battery simulator, the two ends of the second communication line are respectively connected to the battery monitoring circuit and the battery management unit, and the two ends of the third communication line are respectively connected to the insulation monitoring circuit and the battery management unit.

[0010] In the above scheme, the battery monitoring circuit, insulation monitoring circuit and battery management unit of the battery management system to be tested can be detachably arranged on the substrate, and the various circuits used by the battery management system to be tested to be connected for testing are all fixedly arranged on the substrate. In this way, when testing different types of battery management systems to be tested, only at least one of the battery monitoring circuit, insulation monitoring circuit and battery management unit needs to be replaced, without the need to rewire. While improving the convenience and efficiency of testing, it can also realize the testing of different battery management systems to be tested.

[0011] In some embodiments, the battery management unit includes a master battery management unit and a slave battery management unit, the battery monitoring circuit is connected to the slave battery management unit via the second communication line, the slave battery management unit is connected to the battery simulator via the voltage source monitoring line, the insulation monitoring circuit is connected to the master battery management unit via the third communication line, the current detector and the instruction execution feedback component are respectively connected to the slave battery management unit, the power supply component is respectively connected to the master battery management unit and the slave battery management unit, and the master battery management unit is connected to the slave battery management unit.

[0012] In the above solution, the battery management unit includes a master battery management unit and a slave battery management unit, and both the master battery management unit and the slave battery management unit can be detachably arranged on the substrate, thereby improving the convenience of replacing the master battery management unit and the slave battery management unit.

[0013] In some embodiments, the battery management system testing device further includes a first communication line, the first communication line is fixedly arranged on the substrate, and two ends of the first communication line are respectively connected to the master battery management unit and the slave battery management unit.

[0014] In the above scheme, the first communication line between the master battery management unit and the slave battery management unit is fixedly set on the substrate. During the replacement of the master battery management unit and / or the slave battery management unit, there is no need to reconnect the wires, thereby improving the convenience of testing.

[0015] In some embodiments, the current detector comprises a Hall sensor.

[0016] The above scheme collects current through a current sensor operating according to the Hall effect, and has the advantages of fast response speed, high measurement accuracy and wide measurement range.

[0017] In some embodiments, the instruction execution feedback component includes a relay and a status indicator, and the relay is connected to the battery management system to be tested and the status indicator respectively.

[0018] The above scheme realizes the display function of whether the instruction is executed through the relay and the status indicator. In the two cases where the control command sent by the battery management system to be tested is executed or not executed, the relay action can make the status indicator show different status indications, which is convenient for the tester to view the test results.

[0019] In some embodiments, the instruction execution feedback component includes a relay and a status signal collector, the relay is respectively connected to the battery management system to be tested and the status signal collector, and the status signal collector is connected to the battery management system to be tested.

[0020] The above scheme realizes the output function of whether the instruction is executed through the relay and the status signal collector. In the two cases where the control command sent by the battery management system to be tested is executed or not executed, the status signal collector can collect the different action states of the relay and return it to the battery management system to be tested, so as to facilitate the battery management system to store the test results.

[0021] In some embodiments, the power supply component includes a voltage source; or the power supply component includes a power processor, and the power processor is used to access the mains.

[0022] The above scheme can directly use the power supply to power the battery management system under test, or it can convert the mains power to power the battery management system under test. In this way, it can provide the required voltage for the test of the battery management system, with high power supply reliability.

[0023] In a second aspect, the present application provides a battery management system testing device, including a battery simulator and the above-mentioned battery management system testing device.

[0024] In some embodiments, the battery simulator includes at least one of an insulation resistance simulator, a cell voltage simulator, a temperature simulator, a DC voltage source, and a current source.

[0025] The above scheme uses at least one of an insulation resistance simulator, a cell voltage simulator, a temperature simulator, a DC voltage source and a current source to more realistically and reliably simulate different operating conditions of the battery and improve the test accuracy of the battery management system.

[0026] In some embodiments, the battery management system testing device further includes a host computer, and the battery management system to be tested is communicatively connected to the host computer.

[0027] In the above scheme, the battery management system to be tested is also connected to the host computer for communication, so that the test results can be sent to the host computer for storage, which is convenient for subsequent analysis and tracing. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0029] Figure 1 This is a schematic diagram of the structure of a battery management system testing device in some embodiments of the present application;

[0030] Figure 2 This is a schematic diagram of the structure of a battery management system test device in some other embodiments of the present application;

[0031] Figure 3 This is a schematic diagram of the structure of a battery management system testing device in some other embodiments of the present application;

[0032] Figure 4 This is a schematic diagram of the structure of a battery management system test device in some further embodiments of the present application;

[0033] Figure 5 This is a schematic diagram of the structure of the battery management system testing equipment in some embodiments of the present application.

[0034] Description of reference numerals:

[0035] 100-substrate, 200-battery management system to be tested, 300-auxiliary test component; 310-current detector, 320-instruction execution feedback component, 330-power supply component; 11-current acquisition circuit, 12-instruction issuance circuit, 13-power supply circuit; 210-battery management unit, 220-battery monitoring circuit, 230-insulation monitoring circuit; 21-insulation monitoring circuit, 22-cell voltage monitoring circuit, 23-temperature monitoring circuit, 24-voltage source monitoring circuit, 25-second communication circuit, 26-third communication circuit, 27-first communication circuit; 211-master battery management unit, 212-slave battery management unit. DETAILED DESCRIPTION

[0036] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0038] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0039] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0040] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0041] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0042] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0043] At present, judging from the development of the market situation, the application of batteries is becoming more and more extensive. They are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of battery application fields, the market demand is also constantly expanding.

[0044] As an important component of the battery, the battery management system is of great significance in improving the safety, reliability and efficiency of battery operation. The safe and stable operation of the battery management system is particularly important. In order to achieve the safe and stable operation of the battery management system, it is generally necessary to test the battery management system.

[0045] However, at present, when testing the battery management system, it is necessary to connect the battery management system to be tested with the battery simulator, and then implement different test items according to the test requirements. The whole process has the phenomenon of low test operation convenience, which indirectly leads to a long test cycle.

[0046] Through in-depth research, it was found that at present, the battery management system needs to be tested by placing the battery management system together with the high-voltage copper busbar, fuse, pre-charge resistor, pre-charge relay, etc. in the control box to form a test fixture for testing. Under this test architecture, some structures and components are in a chaotic and redundant state, which makes the test operation cumbersome and the test cycle long.

[0047] However, when testing a battery management system, it is usually only necessary to test and evaluate the performance of the battery management system itself, such as the test items specified in GB / T34131 "Battery Management System for Power Energy Storage". Therefore, it is possible to consider optimizing the test topology of the battery management system, rebuilding the test topology, removing unnecessary components, optimizing the structure of the test topology, and simplifying the wiring harness connection between different hierarchical architectures.

[0048] Based on the above considerations, the present application provides a battery management system testing device, in which the battery management system to be tested is arranged on a substrate and connected to a battery simulator, and auxiliary test components including a current detector, a power supply component and an instruction execution feedback component are arranged on the substrate. In this way, during the actual test process of the battery management system to be tested, the battery management system to be tested is powered by the power supply component; in combination with the current detector, the battery simulator can be used to collect simulated battery operating parameters and simulated battery current parameters when the battery is charged and discharged; and the control command is sent to the instruction execution feedback component to determine whether it is executed.

[0049] Through the above solution, the test items required by the battery management system can be implemented without additional components such as high-voltage copper busbars, fuses, pre-charging resistors, pre-charging relays, etc. The entire test architecture is concise and clear, which can effectively improve the convenience of test operations.

[0050] The battery management system test device provided by the present application is used for testing the battery management system, and can be used for testing the energy storage battery management system or the power battery management system. There is no specific limitation, and the selection can be made in combination with actual needs. In order to facilitate the understanding of the technical solution of the present application, the following embodiments can be immediately used for testing the energy storage battery management system.

[0051] See also Figure 1 The present application provides a battery management system testing device, including a substrate 100, a battery management system 200 to be tested and an auxiliary testing component 300. The battery management system 200 to be tested is arranged on the substrate 100, and the battery management system 200 to be tested is used to connect to a battery simulator to collect simulated battery operation parameters when the battery simulator simulates battery operation; the auxiliary testing component 300 includes a current detector 310, a power supply component 330 and an instruction execution feedback component 320, and the current detector 310, the power supply component 330 and the instruction execution feedback component 320 are respectively arranged on the substrate 100, and the current detector 310, the power supply component 330 and the instruction execution feedback component 320 are respectively connected to the battery management system 200 to be tested; wherein, the current detector 310 is used to connect to the battery simulator to collect simulated battery current parameters; the power supply component 330 is used to supply power to the battery management system 200 to be tested; the instruction execution feedback component 320 is used to respond to the control command sent by the battery management system 200 to be tested.

[0052] Specifically, the substrate 100 is a circuit board used to carry the battery management system 200 to be tested and the auxiliary test component 300. The battery management system 200 to be tested is the battery management system that needs to be tested, which can be an energy storage battery management system or a power battery management system. The auxiliary test component 300 is a component used to assist the battery management system in testing. The current detector 310 is a device for collecting current. The power supply component 330 is a device for providing electrical energy, which can be a power supply or a device for converting and processing power, and is not specifically limited. The instruction execution feedback component 320 is a device for feedback whether the instruction is executed, and the instruction refers to the control command sent by the battery management system 200 to be tested.

[0053] A battery simulator is a device used to simulate the working characteristics of a battery. Specifically, it can simulate the output state of the battery, such as the battery charging state, discharging state, open circuit voltage, internal resistance, etc. It can also simulate how the output voltage changes with changes in current, temperature and state of charge (SOC).

[0054] During the actual test process, the power supply component 330 supplies power to the battery management system 200 to be tested, so that the battery management system 200 to be tested is powered on and runs. However, the battery management system 200 to be tested can communicate with the battery simulator, simulate different operating states of the battery by controlling the battery simulation system, and collect the simulated battery operating parameters when the battery simulation system simulates different operating states. When there are alarm protection and control requirements, the battery management system 200 to be tested can output control commands to the instruction execution feedback component 320. Finally, the test of the battery management system 200 to be tested is realized by combining the simulated battery operating parameters and the response results of the instruction execution feedback component 320.

[0055] It should be noted that the types of test items required by the battery management system are not unique. In some embodiments, according to the requirements of the "Battery Management System for Power Energy Storage", the 19 test items required by the battery management system and the components required to participate in the test are shown in Table 1:

[0056] Table 1

[0057]

[0058] It can be understood that in order to implement the testing of the above-mentioned test items, in some embodiments, it is necessary to configure different environment providing devices, such as a temperature chamber, a salt spray chamber, a wet heat chamber, etc., to provide different environments such as wet heat, salt spray, high temperature, and low temperature for the battery management system 200 to be tested. After that, the test can be completed by combining the components in the battery management system testing device.

[0059] In the above-mentioned battery management system testing device, the battery management system 200 to be tested is arranged on the substrate 100 and connected to the battery simulator, and an auxiliary test component 300 including a current detector 310, a power supply component 330 and an instruction execution feedback component 320 is arranged on the substrate 100. In this way, during the actual test process of the battery management system 200 to be tested, the battery management system 200 to be tested is powered by the power supply component 330; combined with the current detector 310, the battery simulator can be used to simulate the simulated battery operating parameters and simulated battery current parameters during the battery charging and discharging operation; and the control command is sent to the instruction execution feedback component 320 to determine whether it is executed. Through this solution, there is no need for additional components such as high-voltage copper busbars, fuses, pre-charging resistors, pre-charging relays, etc., and the test items required for the battery management system can be performed. The entire test architecture is concise and clear, which can effectively improve the convenience of test operations.

[0060] See also Figure 2 In some embodiments, the battery management system testing device further includes a current acquisition circuit 11, an instruction issuing circuit 12 and a power supply circuit 13, wherein the current acquisition circuit 11, the instruction issuing circuit 12 and the power supply circuit 13 are fixedly arranged on the substrate 100; the two ends of the current acquisition circuit 11 are respectively connected to the battery management system 200 to be tested and the battery simulator, and the current detector 310 is arranged on the current acquisition circuit 11; the two ends of the instruction issuing circuit 12 are respectively connected to the battery management system 200 to be tested and the instruction execution feedback component 320; the two ends of the power supply circuit 13 are respectively connected to the battery management system 200 to be tested and the power supply component 330; the current detector 310, the power supply component 330 and the instruction execution feedback component 320 are respectively detachably arranged on the substrate 100.

[0061] Specifically, the current acquisition circuit 11 is used to connect the battery simulator to the battery management system 200 to be tested, so as to realize the routing of the simulated battery current parameter acquisition; the instruction sending circuit 12 is used to transmit the control command of the battery management system 200 to be tested to the signal routing of the instruction execution feedback component 320. The power supply circuit 13 is used to transmit the power of the power supply component 330 to the power line of the battery management system 200 to be tested.

[0062] The solidification setting is to design and fix the electronic circuits on the substrate 100, and then use these electronic circuits to achieve the connection between different devices. The detachable setting is not limited to a single method, and can be threaded connection, adhesive connection or snap connection, etc., which is not specifically limited.

[0063] In the above scheme, the current acquisition circuit 11, the instruction issuing circuit 12 and the power supply circuit 13 used to connect the battery management system 200 to be tested and the auxiliary test component 300 are fixedly set on the substrate 100, while the current detector 310, the power supply component 330 and the instruction execution feedback component 320 are respectively detachably set on the substrate 100. In this way, when the current detector 310, the power supply component 330 or the instruction execution feedback component 320 needs to be replaced due to failure or other reasons, there is no need to reconnect the wiring, which effectively improves the convenience and efficiency of the test.

[0064] See also Figure 3 In some embodiments, the battery management system 200 to be tested includes a battery monitoring circuit 220, an insulation monitoring circuit 230 and a battery management unit 210, and the battery management system test device also includes an insulation monitoring circuit 21, a temperature monitoring circuit 23, a single cell voltage monitoring circuit 22, a voltage source monitoring circuit 24, a second communication line 25 and a third communication line 26; the insulation monitoring circuit 21, the temperature monitoring circuit 23, the single cell voltage monitoring circuit 22, the voltage source monitoring circuit 24, the second communication line 25 and the third communication line 26 are all solidified and arranged on the substrate 100; the battery monitoring circuit 220, the insulation monitoring circuit 230 and the battery management unit The elements 210 are detachably arranged on the substrate 100; the two ends of the insulation monitoring circuit 21 are respectively connected to the insulation monitoring circuit 230 and the battery simulator, the two ends of the temperature monitoring circuit 23 are respectively connected to the battery monitoring circuit 220 and the battery simulator, the two ends of the single cell voltage monitoring circuit 22 are respectively connected to the battery monitoring circuit 220 and the battery simulator, the two ends of the voltage source monitoring circuit 24 are respectively connected to the battery management unit 210 and the battery simulator, the two ends of the second communication line 25 are respectively connected to the battery monitoring circuit 220 and the battery management unit 210, and the two ends of the third communication line 26 are respectively connected to the insulation monitoring circuit 230 and the battery management unit 210.

[0065] Specifically, the battery monitoring circuit 220 is a circuit used to detect the battery voltage and temperature in the battery management system. In the solution of this embodiment, the battery monitoring circuit 220 is connected to the battery simulator, which can collect simulated battery voltage parameters and simulated battery temperature parameters, and send them to the battery management unit 210. The insulation monitoring circuit 230 is a circuit used to monitor the insulation performance of the battery in the battery management system. In the solution of this embodiment, the insulation monitoring circuit 230 is connected to the battery simulator, which can collect simulated battery insulation performance parameters and feed them back to the battery management unit 210. The battery management unit 210 (BMU, Battery Management Unit) is the core processor in the battery management system, which is used to summarize and analyze various battery status parameters and schedule battery operation.

[0066] The insulation monitoring circuit 21 is about to connect the battery simulator to the insulation monitoring circuit 230 to realize the routing of the simulated battery insulation performance acquisition; the temperature monitoring circuit 23 is about to connect the battery simulator to the battery monitoring circuit 220 to realize the routing of the simulated battery temperature acquisition; the single cell voltage monitoring circuit 22 is about to connect the battery simulator to the battery monitoring circuit 220 to realize the routing of the simulated single cell voltage acquisition; the voltage source monitoring circuit 24 is about to connect the battery simulator to the battery management unit 210 to realize the routing of the simulated battery voltage acquisition; the second communication circuit 25 is also the signal routing that realizes the communication between the battery monitoring circuit 220 and the battery management unit 210; the third communication circuit 26 is also the signal routing that realizes the communication between the insulation monitoring circuit 230 and the battery management unit 210.

[0067] In this embodiment, the connection lines between the battery management system and the battery simulator, as well as the connection lines between the battery management systems, can be fixedly set on the substrate 100. In this way, the connection with the battery simulator can be achieved by simply leading from the corresponding position of the substrate 100. When there is a need for disassembly, the connection between the battery simulator and the substrate 100 can be disconnected. The various components in the battery management system are modularly arranged and can be detachably configured on the substrate 100, which is conducive to the replacement of various modules in the battery management system.

[0068] In the above scheme, the battery monitoring circuit 220, insulation monitoring circuit 230 and battery management unit 210 of the battery management system 200 to be tested can be detachably arranged on the substrate 100, and the various circuits used by the battery management system 200 to be tested to be connected for testing are all fixedly arranged on the substrate 100. In this way, when testing different types of battery management systems 200 to be tested, only at least one of the battery monitoring circuit 220, insulation monitoring circuit 230 and battery management unit 210 needs to be replaced, without rewiring, which improves the convenience and efficiency of testing and can also realize the testing of different battery management systems 200 to be tested.

[0069] See also Figure 4 In some embodiments, the battery management unit 210 includes a master battery management unit 211 and a slave battery management unit 212, the battery monitoring circuit 220 is connected to the slave battery management unit 212 via a second communication line 25, the slave battery management unit 212 is connected to the battery simulator via a voltage source monitoring line 24, the insulation monitoring circuit 230 is connected to the master battery management unit 211 via a third communication line 26, the current detector 310 and the instruction execution feedback component 320 are respectively connected to the slave battery management unit 212, the power supply component 330 is respectively connected to the master battery management unit 211 and the slave battery management unit 212, and the master battery management unit 211 is connected to the slave battery management unit 212.

[0070] Specifically, the type of battery management unit 210 is not unique. It can be an independent battery management unit 210 as the core processor of the battery management system; it can also be a battery management unit 210 with a master-slave structure as the core processor of the battery management system, without specific limitation.

[0071] In the master-slave structured battery management unit 210, the master battery management unit 211 is connected to the insulation monitoring circuit 230, and the slave battery management unit 212 is connected to the battery monitoring circuit 220, the current detector 310 and the instruction execution feedback component 320. Through the interaction between the master and slave battery management units 212, parameter collection and instruction issuance are realized, thereby completing the required test items.

[0072] In the above solution, the battery management unit 210 includes a master battery management unit 211 and a slave battery management unit 212 , and both the master battery management unit 211 and the slave battery management unit 212 can be detachably arranged on the substrate 100 , thereby improving the convenience of replacing the master battery management unit 211 and the slave battery management unit 212 .

[0073] Please continue reading Figure 4 In some embodiments, the battery management system testing device further includes a first communication line 27, which is fixedly arranged on the substrate 100, and the two ends of the first communication line 27 are respectively connected to the master battery management unit 211 and the slave battery management unit 212.

[0074] Specifically, the first communication line 27 is a signal line for realizing communication between the master battery management unit 211 and the slave battery management unit 212. In the solution of this embodiment, the signal line between the master battery management unit 211 and the slave battery management unit 212 is further fixedly set on the substrate 100. When the master battery management unit 211 and / or the slave battery management unit 212 is replaced, the master battery management unit 211 and / or the slave battery management unit 212 can be directly disassembled for replacement.

[0075] In the above solution, the first communication line 27 between the master battery management unit 211 and the slave battery management unit 212 is fixedly set on the substrate 100. During the replacement of the master battery management unit 211 and / or the slave battery management unit 212, there is no need to reconnect the wires, thereby improving the convenience of testing.

[0076] In some embodiments, the current detector 310 includes a Hall sensor.

[0077] Specifically, the Hall sensor, also known as the Hall current sensor, is a sensor that works based on the Hall effect principle and realizes current collection. It can be understood that in other embodiments, other types of current detectors 310 can also be used, and are not specifically limited.

[0078] The above scheme collects current through a current sensor operating according to the Hall effect, and has the advantages of fast response speed, high measurement accuracy and wide measurement range.

[0079] In some embodiments, the instruction execution feedback component 320 includes a relay and a status indicator, and the relay is connected to the battery management system 200 to be tested and the status indicator respectively.

[0080] Specifically, the status indicator can output different types of signals according to the on / off state of the relay to characterize the device in different states. It can be understood that the type of status indicator is not unique. In one embodiment, it can be a buzzer, a signal light, etc., without specific limitation. In actual scenarios, if the control command is issued to the relay normally, the relay will be triggered to operate, and the status indicator will be powered and output a status indication signal, such as a sound or light signal; if the control command is not issued normally, the relay will not operate, and the status indicator will lose power and no status indication signal will be output.

[0081] The above scheme realizes the display function of whether the instruction is executed through the relay and the status indicator. In the two cases where the control command sent by the battery management system 200 to be tested is executed or not executed, the relay action can make the status indicator show different status indications, which is convenient for the tester to view the test results.

[0082] In some embodiments, the instruction execution feedback component 320 includes a relay and a status signal collector, the relay is respectively connected to the battery management system 200 to be tested and the status signal collector, and the status signal collector is connected to the battery management system 200 to be tested.

[0083] Specifically, unlike the above-mentioned embodiment in which the instruction execution feedback component 320 is directly used to indicate whether the instruction is issued normally, the solution of this embodiment is configured with a status signal collector, and the action state of the relay is detected by the status signal collector. In the two cases where the relay receives the control command and does not receive the control command, the status signal collector can detect different status signals and send them to the battery management system, specifically to the battery management unit 210 of the battery management system, and the battery management unit 210 analyzes whether the control command is received normally based on the received status signal.

[0084] The above scheme realizes the output function of whether the instruction is executed through the relay and the status signal collector. In the two cases where the control command sent by the battery management system 200 to be tested is executed or not executed, the status signal collector can collect the different action states of the relay and return it to the battery management system 200 to be tested, so as to facilitate the battery management system 200 to be tested to store the test results.

[0085] In some embodiments, the power supply component 330 includes a voltage source; or the power supply component 330 includes a power processor, and the power processor is used to access the mains.

[0086] Specifically, the power processor is used to process the mains power to obtain a power supply device with a required voltage. It should be noted that the specific type of the power processor is not unique. In one embodiment, it should include at least two parts: a step-down device and an AC / DC converter. For example, in one embodiment, the power processor can be a switching power supply.

[0087] It should be noted that the voltage of the voltage source or the voltage output by the power processor is not unique and may vary according to different design standards of the battery management system. For example, in a more detailed embodiment, the voltage may be set to 24V (volts).

[0088] The above scheme can directly use the power supply to power the battery management system 200 under test, or it can convert the city power to power the battery management system 200 under test. In this way, it can provide the required voltage for the test of the battery management system, with high power supply reliability.

[0089] In order to facilitate understanding of the technical solution of the present application, the present application is explained below in conjunction with more detailed embodiments.

[0090] The battery management system test device includes a substrate 100, a battery management system 200 to be tested, and an auxiliary test component 300. The battery management system 200 to be tested includes a MBMU (Master Battery Management Unit, master battery management unit 211), a SBMU (Slave Battery Management Unit, slave battery management unit 212), a CSC (Cell Supervision Circuit, battery monitoring circuit 220) and an IMM (Insulation monitoring Module, insulation monitoring module or insulation monitoring circuit 230). The auxiliary test component 300 includes a current detector 310, a power supply component 330 and an instruction execution feedback component 320. The current detector 310, the power supply component 330, the instruction execution feedback component 320, the MBMU, the SBMU, the CSC and the IMM are all modularized and can be detachably arranged on the substrate 100. The substrate 100 is further solidified with a current acquisition circuit 11, an instruction issuing circuit 12, a power supply circuit 13, an insulation monitoring circuit 21, a temperature monitoring circuit 23, a single cell voltage monitoring circuit 22, a voltage source monitoring circuit 24, a second communication circuit 25, a third communication circuit 26 and a first communication circuit 27. The first end of the power supply circuit 13 is connected to the power supply component 330, the second end of the power supply circuit 13 is respectively connected to the MBMU and the SBMU, the CSC is respectively connected to the battery simulator through the temperature monitoring circuit 23 and the single cell voltage monitoring circuit 22, the IMM is connected to the battery simulator through the insulation monitoring circuit 21, the CSC is connected to the SBMU through the second communication circuit 25, the IMM is connected to the MBMU through the third communication circuit 26, and the MBMU and the SBMU are connected through the first communication circuit 27; the SBMU is connected to the battery manager through the voltage source monitoring circuit 24, the SBMU is connected to the power manager through the current acquisition circuit 11, and the SBMU is connected to the instruction execution feedback component 320 through the instruction issuing circuit 12.

[0091] In this solution, the master battery management unit 211 and the slave battery management unit 212 are responsible for analyzing the battery status, calculating battery parameters, issuing fault alarms and control instructions, etc.; the battery monitoring circuit 220 is responsible for collecting the voltage and temperature analog signals of the single battery, summarizing and outputting them to the battery management unit 210; the insulation monitoring circuit 230 is responsible for monitoring the insulation performance of the battery, collecting insulation performance parameters and feeding them back to the master battery management unit 211. The current detector 310 is a Hall sensor, the power supply component 330 is a 24V power supply, and the instruction execution feedback component 320 includes a connected relay and a signal light. The 24V power supply is responsible for supplying power to the master and slave battery management units 212; the relay and the signal light are responsible for displaying whether the control command of the battery management system is executed; the Hall sensor is responsible for collecting current.

[0092] In this way, the battery management system 200 to be tested can realize the voltage accuracy, current accuracy, temperature accuracy, alarm and protection, SOE (battery energy state) accuracy, insulation withstand voltage, balance, insulation resistance detection, environmental adaptability, and electrical adaptability tests required by the "Battery Management System for Power Energy Storage" in combination with the collected parameters. It has high test operation convenience and shortens the test cycle.

[0093] The present application provides a battery management system testing device, including a battery simulator and the above-mentioned battery management system testing device.

[0094] Specifically, the structure of the battery management system test device is as shown in the above-mentioned embodiments and the accompanying drawings, and will not be repeated here. In this solution, the battery management system 200 to be tested is arranged on the substrate 100 and connected to the battery simulator, and an auxiliary test component 300 including a current detector 310, a power supply component 330 and an instruction execution feedback component 320 is arranged on the substrate 100. In this way, during the actual test process of the battery management system 200 to be tested, the battery management system 200 to be tested is powered by the power supply component 330; combined with the current detector 310, the battery simulator can be used to simulate the simulated battery operating parameters and simulated battery current parameters during the battery charging and discharging operation; and the control command is sent to the instruction execution feedback component 320 to determine whether it is executed. Through this solution, the test items required for the battery management system can be realized without the need for additional components such as high-voltage copper busbars, fuses, pre-charging resistors, pre-charging relays, etc. The entire test architecture is concise and clear, which can effectively improve the convenience of test operations.

[0095] In some embodiments, the battery simulator includes at least one of an insulation resistance simulator, a cell voltage simulator, a temperature simulator, a DC voltage source, and a current source.

[0096] Specifically, the insulation resistance simulator is a device used to simulate the insulation performance of the battery; the single cell voltage simulator is a device used to simulate the single cell voltage of the battery; the temperature simulator is a device used to simulate the battery temperature; the DC voltage source is a device used to simulate the battery charge and discharge voltage; the current source is a device used to simulate the battery charge and discharge current.

[0097] In actual scenarios, according to test requirements, one or more of an insulation resistance simulator, a cell voltage simulator, a temperature simulator, a DC voltage source, and a current source may be configured in the battery simulator. Figure 5 ,The battery simulator also includes an insulation resistance simulator, a single cell voltage simulator, a temperature simulator, a DC voltage source and a current source.

[0098] The above scheme uses at least one of an insulation resistance simulator, a cell voltage simulator, a temperature simulator, a DC voltage source and a current source, which can more realistically and reliably simulate different operating conditions of the battery and improve the test accuracy of the battery management system.

[0099] In some embodiments, the battery management system testing equipment further includes a host computer, and the battery management system 200 to be tested is communicatively connected to the host computer.

[0100] Specifically, in this embodiment, the battery management system 200 under test also has the function of communicating with the host computer. Specifically, the main battery management unit 211 of the battery management system 200 under test communicates with the host computer through a CAN (Controller Area Network) communication line.

[0101] In the above solution, the battery management system 200 to be tested is also connected to the host computer for communication, so that the test results can be sent to the host computer for storage, which is convenient for subsequent analysis and tracing.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery management system testing device, characterized in that: include: substrate; A battery management system to be tested is arranged on the substrate, the battery management system to be tested includes a battery monitoring circuit, an insulation monitoring circuit and a battery management unit, the battery management unit includes a master battery management unit and a slave battery management unit, and the battery management system to be tested is used to connect to a battery simulator to collect simulated battery operating parameters; An auxiliary test component, comprising a current detector, a power supply component and an instruction execution feedback component, wherein the current detector, the power supply component and the instruction execution feedback component are respectively arranged on the substrate, and the current detector, the power supply component and the instruction execution feedback component are respectively connected to the battery management system to be tested; A first communication line is fixedly arranged on the substrate, and two ends of the first communication line are respectively connected to the master battery management unit and the slave battery management unit; Among them, the current detector is used to connect to the battery simulator to collect simulated battery current parameters; the power supply component is used to power the battery management system under test; and the instruction execution feedback component is used to respond to control commands sent by the battery management system under test.

2. The battery management system testing device according to claim 1, characterized in that: The battery management system test device further includes a current acquisition circuit, an instruction issuing circuit and a power supply circuit, wherein the current acquisition circuit, the instruction issuing circuit and the power supply circuit are solidly arranged on the substrate; The two ends of the current acquisition circuit are respectively connected to the battery management system to be tested and the battery simulator, and the current detector is arranged on the current acquisition circuit; The two ends of the instruction issuing circuit are respectively connected to the battery management system to be tested and the instruction execution feedback component; the two ends of the power supply circuit are respectively connected to the battery management system to be tested and the power supply component; The current detector, the power supply component and the instruction execution feedback component are respectively detachably arranged on the substrate.

3. The battery management system testing device according to claim 1 or 2, characterized in that: The battery management system test device also includes an insulation monitoring circuit, a temperature monitoring circuit, a single cell voltage monitoring circuit, a voltage source monitoring circuit, a second communication circuit and a third communication circuit; The insulation monitoring circuit, the temperature monitoring circuit, the single cell voltage monitoring circuit, the voltage source monitoring circuit, the second communication circuit and the third communication circuit are all solidified and arranged on the substrate; The battery monitoring circuit, the insulation monitoring circuit and the battery management unit are respectively detachably arranged on the substrate; the two ends of the insulation monitoring circuit are respectively connected to the insulation monitoring circuit and the battery simulator, the two ends of the temperature monitoring circuit are respectively connected to the battery monitoring circuit and the battery simulator, the two ends of the single cell voltage monitoring circuit are respectively connected to the battery monitoring circuit and the battery simulator, the two ends of the voltage source monitoring circuit are respectively connected to the battery management unit and the battery simulator, the two ends of the second communication line are respectively connected to the battery monitoring circuit and the battery management unit, and the two ends of the third communication line are respectively connected to the insulation monitoring circuit and the battery management unit.

4. The battery management system testing device according to claim 3, characterized in that: The battery monitoring circuit is connected to the slave battery management unit via the second communication line, the slave battery management unit is connected to the battery simulator via the voltage source monitoring line, the insulation monitoring circuit is connected to the master battery management unit via the third communication line, the current detector and the instruction execution feedback component are respectively connected to the slave battery management unit, the power supply component is respectively connected to the master battery management unit and the slave battery management unit, and the master battery management unit is connected to the slave battery management unit.

5. The battery management system testing device according to claim 1 or 2, characterized in that: The current detector includes a Hall sensor.

6. The battery management system testing device according to claim 1 or 2, characterized in that: The instruction execution feedback component includes a relay and a status indicator, and the relay is connected to the battery management system to be tested and the status indicator respectively.

7. The battery management system testing device according to claim 1 or 2, characterized in that: The instruction execution feedback component includes a relay and a status signal collector, the relay is respectively connected to the battery management system to be tested and the status signal collector, and the status signal collector is connected to the battery management system to be tested.

8. The battery management system testing device according to claim 1 or 2, characterized in that: The power supply component includes a voltage source; or the power supply component includes a power processor, and the power processor is used to access the mains.

9. A battery management system testing device, characterized in that: It comprises a battery simulator and a battery management system testing device as claimed in any one of claims 1 to 8.

10. The battery management system testing device according to claim 9, characterized in that: The battery simulator includes at least one of an insulation resistance simulator, a cell voltage simulator, a temperature simulator, a DC voltage source, and a current source.

11. The battery management system testing device according to claim 9, characterized in that: The battery management system testing device also includes a host computer, and the battery management system to be tested is communicatively connected to the host computer.

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