Battery protection board test system

Abstract

The invention discloses a battery protection board test system which comprises an upper computer, a test signal sending subsystem, a response signal receiving subsystem, a clock module and a power supply module. The test system solves the problems of low flexibility, small storage depth, slow test speed and the like of a traditional battery protection board test system. The system can send a test waveform to the tested battery protection board according to the requirement of an operator, receives a response signal of the tested battery protection board, stores and uploads the response signal to the upper computer for analysis and processing by the operator, can quickly judge whether the performance of the tested battery protection board is normal or not and position a fault position, achieves the effect of getting twofold results with half the effort, and has a wide application prospect. The test system is provided with special test software, has a friendly user interface and powerful functions, and is simple and convenient to operate. Meanwhile, the test system adopts modular design, and standardized interface design is adopted among the modules, so that the modules are convenient to plug and replace, and the cost of the test system is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of testing equipment, and in particular to a battery protection board testing system. Background Art

[0002] With the continuous development of battery technology and the increasing application fields, the performance and quality requirements of battery protection boards are getting higher and higher. In order to ensure the reliability and safety of battery protection boards, they need to be tested comprehensively and accurately. The traditional battery protection board test system development model requires a comprehensive grasp of the details of the tested battery protection board. The system is difficult to build, has low utilization efficiency and flexibility, and poor scalability, and cannot meet the testing needs of different types of battery protection boards.

[0003] At present, since the test functions and output ports of the battery protection board are relatively fixed, when customers have new needs, they need to upgrade the equipment. When the overall framework remains unchanged, they have to use external devices, which leads to poor overall appearance; or reorganize the system framework, which is time-consuming and labor-intensive. Therefore, it is of great practical significance to develop a modular and flexibly expandable battery protection board test system. Summary of the invention

[0004] In view of the defects in the prior art, the present invention provides a battery protection board testing system to solve the technical problems raised in the background technology.

[0005] A battery protection board test system includes a host computer, a test signal sending subsystem, a response signal receiving subsystem, a clock module and a power supply module; wherein:

[0006] The test signal sending subsystem includes a test signal sending control module, a sending buffer module and a test signal sending conditioning module, wherein the sending buffer module and the test signal sending conditioning module are both electrically connected to the test signal sending control module; the test signal sending control module is signal connected to the host computer;

[0007] The response signal receiving subsystem includes a response signal receiving control module, a receiving buffer module and a response signal receiving conditioning module, wherein the receiving buffer module and the response signal receiving conditioning module are both electrically connected to the response signal receiving control module; the response signal receiving control module is electrically connected to the host computer;

[0008] The clock module is connected to the test signal sending control module and the response signal receiving control module;

[0009] The power supply module is connected to the test signal sending conditioning module and the response signal receiving conditioning module;

[0010] The test signal sending control module saves the test vector sent by the host computer to the sending buffer module, and continuously outputs it to the tested battery protection board through the test signal sending conditioning module;

[0011] The response signal receiving control module receives the response signal of the tested battery protection board to the test signal through the response signal receiving conditioning module, saves the response signal into the receiving buffer module, and centrally sends the response signal to the host computer for test analysis.

[0012] Furthermore, the power supply module includes a switching power supply and a power supply voltage stabilizing circuit, and the switching power supply is used to supply power to the test signal sending conditioning module and the response signal receiving conditioning module after voltage transformation by the power supply voltage stabilizing circuit.

[0013] Furthermore, the test signal sending conditioning module includes a test signal sending driving circuit, an interface adapter circuit and an interface board, the interface board is connected to the test signal sending driving circuit through the interface adapter circuit, and the interface board has multiple test interfaces.

[0014] Furthermore, the test signal sending drive circuit is an EL1056 drive circuit.

[0015] Furthermore, the response signal receiving and conditioning module includes a response signal receiving circuit and an interface board, wherein the interface board is connected to the response signal receiving circuit and has a plurality of response interfaces.

[0016] Furthermore, the sending buffer module and the receiving buffer module are both single-rate dynamic random access memories.

[0017] Furthermore, the test signal sending control module is an FPGA module.

[0018] Furthermore, the response signal receiving control module is an FPGA module.

[0019] Furthermore, the host computer is connected to the test signal sending control module and the response signal receiving control module via a PXI bus expansion board.

[0020] Furthermore, the test signal sending subsystem, the response signal receiving subsystem, the clock module and the power supply module are all installed in the main chassis.

[0021] The beneficial effects of the present invention are embodied in:

[0022] The battery protection board test system provided by the present invention solves the problems of low flexibility, small storage depth, slow test speed, etc. of the traditional battery protection board test system. The system can send the test waveform to the tested battery protection board according to the operator's requirements, store and upload the response signal to the host computer for analysis and processing by the operator after receiving it, and can quickly determine whether the performance of the tested battery protection board is normal and locate the fault position, achieving twice the result with half the effort, and has broad application prospects.

[0023] The test system is equipped with dedicated test software, with a friendly user interface and powerful functions, and is easy to operate. At the same time, the test system adopts a modular design, and the standardized interface design between each module is convenient for module plug-in and replacement, reducing the cost of the test system.

[0024] Users can select corresponding test function modules to combine according to different test requirements to achieve flexible expansion of the test system. The test system can comprehensively test various functions of the battery protection board to ensure the performance and quality of the battery protection board. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0026] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application. For ordinary technicians in this field, other accompanying drawings can also be obtained based on these accompanying drawings without paying creative labor.

[0027] Figure 1 A system structure block diagram of a battery protection board testing system provided by an embodiment of the present invention;

[0028] Figure 2 A schematic diagram of the hardware composition of a battery protection board testing system provided in an embodiment of the present invention.

[0029] The realization of the purpose, functional features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. The above-mentioned drawings have shown clear embodiments of this application, which will be described in more detail later. These drawings and textual descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0032] It should also be understood that the terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0033] It should be further understood that the term "and / or" used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0034] As used in this specification and the appended claims, the term "if" may be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined" or "if [described condition or event] is detected" may be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0035] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0036] like Figure 1 and Figure 2As shown, an embodiment of the present invention provides a battery protection board test system, which can test various functional states of the battery protection board. The test system includes a host computer, a test signal sending subsystem, a response signal receiving subsystem, a clock module and a power module. Among them, the test signal sending subsystem includes a test signal sending control module, a sending buffer module and a test signal sending conditioning module, and the sending buffer module and the test signal sending conditioning module are both electrically connected to the test signal sending control module; the test signal sending control module is connected to the host computer signal.

[0037] The response signal receiving subsystem includes a response signal receiving control module, a receiving buffer module and a response signal receiving conditioning module. The receiving buffer module and the response signal receiving conditioning module are both electrically connected to the response signal receiving control module; the response signal receiving control module is signal-connected to the host computer.

[0038] The test signal sending control module saves the test vector sent by the host computer to the sending buffer module, and continuously outputs it to the battery protection board under test through the test signal sending conditioning module; the response signal receiving control module receives the response signal of the battery protection board under test to the test signal through the response signal receiving conditioning module, saves the response signal to the receiving buffer module, and sends it to the host computer for test analysis. By comparing the sent test vector with the response signal of the battery protection board under test, fault detection and analysis can be performed on the battery protection board under test.

[0039] In this embodiment, the test signal sending control module and the response signal receiving control module both use FPGA modules. FPGA has greater programmable flexibility and portability, and users can repeatedly program to achieve different functions with different hardware description statements without changing the peripheral circuit.

[0040] In this embodiment, the host computer is connected to the test signal sending control module and the response signal receiving control module through a PXI bus expansion board. The host computer runs a preset test software with a friendly user interface and powerful functions, and is easy and convenient to operate. The test software can realize the functions of setting test parameters, controlling the test process, displaying and analyzing test results, etc. The test software supports data storage and query functions, which is convenient for users to manage and analyze test data. After the test is completed, the test system generates a test report and displays the test results. The host computer is responsible for the control and management of the entire test system and coordinates the work of each module.

[0041] In order to make the test system compact, the test signal sending subsystem, the response signal receiving subsystem, the clock module and the power supply module are all installed in the main box.

[0042] The clock module is connected to the test signal sending control module and the response signal receiving control module, and is used to provide a clock signal to the test signal sending control module and the response signal receiving control module.

[0043] The power supply module is connected to the test signal sending conditioning module and the response signal receiving conditioning module. In this embodiment, the power supply module includes a switching power supply and a power supply voltage stabilizing circuit, and the switching power supply supplies power to the test signal sending conditioning module and the response signal receiving conditioning module after voltage transformation by the power supply voltage stabilizing circuit.

[0044] Specifically, the switching power supply outputs +18V and outputs +14V via LT1085-AD as the positive power supply for the test signal sending conditioning module and the response signal receiving conditioning module, the switching power supply outputs -15V and outputs -12V via LT1033 as the negative power supply for the test signal sending conditioning module and the response signal receiving conditioning module, and the switching power supply outputs +7.5V and outputs +5V via LT1085-5 as the power supply for devices such as D / A.

[0045] Specifically, the test signal sending conditioning module includes a test signal sending driving circuit, an interface adapter circuit and an interface board, the interface board is connected to the test signal sending driving circuit through the interface adapter circuit, and the interface board has multiple test interfaces. By connecting the battery protection board to be tested to the corresponding test interface on the interface board, different functional tests are performed on the battery protection board.

[0046] In order to meet the testing requirements of different battery protection boards, the test system is required to be universal and scalable during the design process. Therefore, in the hardware design process, the interface board is reserved to meet the universality and scalability requirements.

[0047] The interface board mainly performs the following functions: (1) Signal isolation: This ensures that the test system does not affect the signal inside the battery protection board when testing between connected devices; (2) Signal conditioning: This isolates and reduces the voltage of the detected signal so that its voltage range meets the input voltage requirements of the acquisition card; (3) Signal reorganization: This classifies the interaction signals between the device and the test system according to the signal category of the custom interface and introduces them into the corresponding ports respectively.

[0048] The test signal transmission drive circuit realizes the conditioning of the test vector, converts the test vector level sent from the test signal transmission control module into the level and high-impedance output required by the test system, and improves the current driving capability. In order to ensure the test frequency, level range and driving capability, this application adopts the EL1056 driving circuit, which can output the level range of -12V to +12V, the frequency reaches 66MHz, the peak driving current reaches 140mA, and has a short-circuit protection function.

[0049] The response signal receiving and conditioning module comprises a response signal receiving circuit and an interface board, wherein the interface board is connected to the response signal receiving circuit and has a plurality of response interfaces for collecting the response signal of the battery protection board to be tested.

[0050] The response signal is received by the response signal receiving circuit, and the response signal receiving circuit can be implemented by a comparison circuit. For example, in order to detect the state of the response vector of the battery protection board under test, the response signal is connected to the positive end of the two-way comparator and compared with the negative end of the two-way comparator. The obtained data is represented by two parallel data. According to the output level of the two-end comparator, the three states of the response vector of the battery protection board under test can be detected. The three states are "high level state", "low level state" and "uncertain state", and usually "uncertain state" is a fault state.

[0051] Specifically, the sending buffer module and the receiving buffer module are both single-rate dynamic random access memories, which have the advantages of large storage capacity per unit space, fast reading and writing speed, and low price.

[0052] In summary, the battery protection board test system provided by the present invention solves the problems of low flexibility, small storage depth, slow test speed, etc. of the traditional battery protection board test system. The system can send the test waveform to the tested battery protection board according to the operator's requirements, store and upload the response signal to the host computer for analysis and processing by the operator after receiving it, and can quickly determine whether the performance of the tested battery protection board is normal and locate the fault position, achieving twice the result with half the effort, and has broad application prospects.

[0053] Users can select corresponding test function modules to combine according to different test requirements to achieve flexible expansion of the test system. The test system can comprehensively test various functions of the battery protection board to ensure the performance and quality of the battery protection board.

[0054] Finally, it should be noted that the various technical features of the technical solution of the present application can be combined arbitrarily. In order to make the description concise, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of the present application.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments may still be modified, or some or all of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and should all be included in the scope of the claims and specification of the present invention.

Claims

1. A battery protection board testing system, characterized in that: It includes a host computer, a test signal sending subsystem, a response signal receiving subsystem, a clock module and a power supply module; wherein, The test signal sending subsystem includes a test signal sending control module, a sending buffer module and a test signal sending conditioning module, wherein the sending buffer module and the test signal sending conditioning module are both electrically connected to the test signal sending control module; the test signal sending control module is signal connected to the host computer; The response signal receiving subsystem includes a response signal receiving control module, a receiving buffer module and a response signal receiving conditioning module, wherein the receiving buffer module and the response signal receiving conditioning module are both electrically connected to the response signal receiving control module; the response signal receiving control module is electrically connected to the host computer; The clock module is connected to the test signal sending control module and the response signal receiving control module; The power supply module is connected to the test signal sending conditioning module and the response signal receiving conditioning module; The test signal sending control module saves the test vector sent by the host computer to the sending buffer module, and continuously outputs it to the tested battery protection board through the test signal sending conditioning module; The response signal receiving control module receives the response signal of the tested battery protection board to the test signal through the response signal receiving conditioning module, saves the response signal into the receiving buffer module, and centrally sends the response signal to the host computer for test analysis.

2. A battery protection board testing system as claimed in claim 1, characterized in that: The power supply module includes a switching power supply and a power supply voltage stabilizing circuit. The switching power supply supplies power to the test signal sending conditioning module and the response signal receiving conditioning module after voltage transformation by the power supply voltage stabilizing circuit.

3. A battery protection board testing system as claimed in claim 1, characterized in that: The test signal sending conditioning module includes a test signal sending driving circuit, an interface adapter circuit and an interface board. The interface board is connected to the test signal sending driving circuit through the interface adapter circuit. The interface board has multiple test interfaces.

4. A battery protection board testing system as claimed in claim 3, characterized in that: The test signal sending driving circuit is an EL1056 driving circuit.

5. A battery protection board testing system as claimed in claim 1, characterized in that: The response signal receiving and conditioning module comprises a response signal receiving circuit and an interface board. The interface board is connected to the response signal receiving circuit and has a plurality of response interfaces.

6. A battery protection board testing system as claimed in claim 1, characterized in that: The sending buffer module and the receiving buffer module are both single-rate dynamic random access memories.

7. A battery protection board testing system as claimed in claim 1, characterized in that: The test signal sending control module is an FPGA module.

8. A battery protection board testing system as claimed in claim 1, characterized in that: The response signal receiving control module is an FPGA module.

9. A battery protection board testing system as claimed in claim 1, characterized in that: The host computer is connected with the test signal sending control module and the response signal receiving control module through a PXI bus expansion board.

10. A battery protection board testing system as claimed in claim 1, characterized in that: The test signal sending subsystem, the response signal receiving subsystem, the clock module and the power supply module are all installed in the main chassis.

Images