Battery busbar testing device, method and system, electronic equipment and medium

Abstract

The invention discloses a battery busbar test device, method and system, electronic equipment and a medium. The device comprises two first test probes, two second test probes, a power supply module and a voltage sampling module, the two first test probes are respectively connected with two ends of the power supply module through wires. The two second test probes are respectively connected with two ends of the voltage sampling module through wires; wherein the two first test probes are respectively in contact with a busbar and a bar of a battery, and the two second test probes are respectively in contact with the busbar and the bar. By distinguishing the voltage sampling point and the current providing point, the accumulated error of the busbar welding resistance caused by the internal resistance of the testing device can be reduced, so that the testing precision of the battery busbar welding resistance is improved.

Description

Technical Field

[0001] The present application relates to the field of battery testing technology, and in particular to a battery bus testing device, method, system, electronic equipment and medium. Background Art

[0002] In the battery manufacturing process, when the battery cell is completed, it is often necessary to package multiple battery cells together with the same outer shell frame and connect them to the outside through a unified boundary to form a battery. In the process of assembling the battery, the bus (such as nickel sheet, copper bus, copper-aluminum composite bus, etc.) needs to be welded to the bus bar. In order to improve the safety of battery use, the bus bar welding resistance of the battery needs to be tested before leaving the factory to determine whether the bus bar welding is in place. Since the welding resistance between the bus and the bus bar is in the micro-ohm level, the test accuracy is very high, so the accurate testing of the battery bus welding resistance has become a technical problem that needs to be solved urgently.

[0003] The above statements are only used to provide background information related to the present application and do not necessarily constitute prior art. Summary of the invention

[0004] In view of the above problems, the present application proposes a battery bus testing device, method, system, electronic device and storage medium to solve the technical problem of accurate testing of the battery bus.

[0005] The first aspect of the present application proposes a battery bus testing device, which includes: two first test probes, two second test probes, a power module, and a voltage sampling module; the two first test probes are respectively connected to the two ends of the power module through wires; the two second test probes are respectively connected to the two ends of the voltage sampling module through wires; wherein the two first test probes respectively contact the bus and the bus of the battery, and the two second test probes also respectively contact the bus and the bus.

[0006] In the technical solution of the embodiment of the present application, two groups of test probes are set to distinguish the voltage sampling and current supply, that is, the two first test probes are connected to the power module through wires, and contact the bus and the bar of the battery respectively to provide current, and the two second test probes are connected to the voltage sampling module through wires, and also contact the bus and the bar respectively to directly measure the voltage of the bus welding resistance. Since the voltage sampling module is a relatively large resistor when measuring voltage, the current flowing through the voltage sampling module is negligible compared to the current flowing through the bus, so the voltage drop caused by the wire resistance between the voltage sampling module and the bus is almost zero, which will not affect the voltage measurement result. It can be seen that by distinguishing the voltage sampling point from the current supply point, the cumulative error of the bus welding resistance caused by the internal resistance of the test device can be reduced, thereby improving the test accuracy of the battery bus welding resistance.

[0007] In some embodiments, the power module includes a constant current source. By using the constant current source in the power module to provide a constant current, it can be ensured that the output current does not change with the change of the load, thereby providing a reliable and stable current output to the bus.

[0008] In some embodiments, the voltage sampling module includes a voltmeter. By directly using the voltmeter in the voltage sampling module to measure the voltage of the busbar welding resistor, there is no need to design a complex sampling circuit, and the use is simple and convenient.

[0009] In some embodiments, the first test probe and the second test probe are both provided with a plurality of needles, and the plurality of needles are used to contact the bus or the bus at multiple points, thereby increasing the contact area and improving the conductivity.

[0010] In some embodiments, the first test probe and the second test probe are both provided with a rotating screw connected to the plurality of needles, so that the pressing amount of the needles can be controlled by rotating the screw, thereby making the needles contact with the bus or tabs of the battery.

[0011] In some embodiments, the device further comprises: a test control module; the test control module is connected to the power module, the voltage sampling module, the two first test probes, and the two second test probes respectively. By setting the test control module, the power module, the voltage sampling module, the first test probe, and the second test probe can be automatically controlled, thereby realizing the automatic test of the bus.

[0012] The second aspect of the present application proposes a battery bus test method, which is applied to the test device described in the above embodiment, and the method includes: controlling two first test probes to contact the bus and the bar of the battery respectively, and two second test probes to contact the bus and the bar respectively; obtaining the constant current provided by the power module to the two first test probes; obtaining the voltage formed between the two second test probes; and determining the bus welding resistance of the battery according to the constant current and the voltage. By using two sets of test probes to distinguish the voltage sampling point and the current supply point of the bus, the interference of the internal resistance of the test device is reduced, thereby reducing the cumulative error of the internal resistance of the test device on the bus welding resistance and improving the test accuracy of the battery bus.

[0013] The third aspect of the present application proposes a battery bus test system, the system comprising an actuator and a plurality of test devices as described in the first aspect, the actuator being used to align each test device with each bus of the battery.

[0014] The third aspect of the present application proposes an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method described in the second aspect when executing the program.

[0015] The fourth aspect of the present application proposes a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described in the second aspect above.

[0016] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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:

[0018] Figure 1 A schematic diagram of a conventional battery bus test;

[0019] Figure 2 This is the test schematic diagram of the traditional battery bus;

[0020] Figure 3 is a structural diagram of a battery busbar testing device according to an exemplary embodiment;

[0021] Figure 4 Based on Figure 3 A test schematic diagram of a battery bus bar shown in the illustrated embodiment;

[0022] Figure 5 Based on Figure 3 A schematic diagram of the structure of a test probe shown in the illustrated embodiment;

[0023] Figure 6 The present invention is a flow chart of an embodiment of a battery bus testing method according to an exemplary embodiment;

[0024] Figure 7 Based on Figure 6 A schematic diagram of a battery bus test shown in the illustrated embodiment;

[0025] Figure 8 is a schematic diagram of a hardware structure of an electronic device according to an exemplary embodiment;

[0026] Fig. 9 is a schematic diagram of the structure of a storage medium according to an exemplary embodiment;

[0027] The reference numerals in the specific implementation manner are as follows:

[0028] First test probes 11 and 12 , second test probes 21 and 22 , power module 10 , constant current source 101 , voltage sampling module 20 , voltmeter 201 , test control module 30 , needle A, rotating screw B. DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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).

[0035] At present, the optimization and improvement of the battery bus test accuracy only considers the alignment accuracy of the test system and the bus. The test system sets a vertical transmission mechanism, a horizontal transmission mechanism and a rotation mechanism to achieve the vertical, horizontal and rotation angle adjustment of the test probe of the test system, so as to optimize the crimping amount between the battery bus and the test probe, thereby improving the test accuracy of the bus.

[0036] In a prior art prior to this application, Figure 1 The test schematic diagram of the battery bus shown in the figure, the test system provides a test probe to contact the C1 point of the bus, and another test probe to contact the C2 point of the bus. The two test probes output current and read the voltage value at both ends of the bus to complete the measurement of the bus welding resistance. Figure 2As shown in the existing measurement principle diagram, resistor R1 is equivalent to the bus welding resistance to be measured, V1 is a test meter used to output current to the bus and read the voltage value, resistor R2 is equivalent to the internal resistance introduced by the test line connected to one of the test probes, and resistor R3 is equivalent to the internal resistance introduced by the test line connected to another test probe. Since the current flowing through resistors R2 and R3 is the same as the current flowing through resistor R1, a voltage drop will be generated on resistors R2 and R3, so that the voltage value read by the test meter V1 introduces the voltage of resistors R2 and R3, and the calculated bus welding resistance will also introduce the internal resistance of the test line, resulting in inaccurate bus test and misjudgment of the bus test.

[0037] In view of this, in order to improve the test accuracy of a battery bus, the present application proposes a battery bus test device and method. The test device separates voltage sampling and current provision by setting two groups of test probes, that is, two first test probes are connected to a power module through wires, and respectively contact the bus and the bus of the battery to provide current, and two second test probes are connected to the voltage sampling module through wires, and respectively contact the bus and the bus to directly measure the voltage of the bus welding resistance. Since the voltage sampling module is a relatively large resistor when collecting voltage, the current flowing through the voltage sampling module is negligible compared to the current flowing through the bus, so the voltage drop caused by the wire resistance between the voltage sampling module and the bus is almost zero, so that the bus welding resistance calculated from the voltage collected by the voltage sampling module and the current provided by the power module will not introduce the internal resistance of the test line.

[0038] The battery bus testing method disclosed in the embodiment of the present application can be used in, but not limited to, the production process of lithium batteries, and can also be used in the production process of other similar structures.

[0039] In the embodiments of the present application, the battery includes but is not limited to a battery module, a battery pack, etc.

[0040] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0041] Figure 3 It is a structural diagram of a battery bus testing device according to an exemplary embodiment, including two first testing probes 11 and 12 , two second testing probes 21 and 22 , a power module 10 , and a voltage sampling module 20 .

[0042] Among them, the two first test probes 11 and 12 are respectively connected to the two ends of the power module 10 through wires. The two first test probes 11 and 12 are used to output the current provided by the power module 10 to the bus of the battery. Since the battery is assembled by welding the bus and the bus bar, the bus and the bus bar are both made of metal conductive materials. Therefore, the two first test probes 11 and 12 can be respectively contacted with the bus and the bus bar of the battery to output the current to the bus.

[0043] The two second test probes 21 and 22 are respectively connected to the two ends of the voltage sampling module 20 through wires. During the test, the two second test probes 21 and 22 also contact the bus and the bar of the battery respectively, so as to transmit the collected voltage at both ends of the battery bus welding resistor to the voltage sampling module 20, so that the voltage sampling module 20 can obtain the voltage of the bus welding resistor.

[0044] It is worth noting that the structures of the first test probes 11 and 12 and the second test probes 21 and 22 are the same. The needle head of each test probe is used to contact the bus or the bar, and the needle tail is connected to the power module 10 or the voltage sampling module 20 through a wire. The only difference is that the first test probes 11 and 12 are used to provide current to the battery bus, and the second test probes 21 and 22 are used to collect the voltage of the battery bus.

[0045] In the embodiment of the present application, two groups of test probes are provided to separate voltage sampling and current provision, that is, two first test probes 11 and 12 are connected to the power module 10 through wires, and respectively contact the bus and the bar of the battery to provide current, and two second test probes 21 and 22 are connected to the voltage sampling module 20 through wires, and also respectively contact the bus and the bar to directly measure the voltage of the bus welding resistance. Since the voltage sampling module 20 is a relatively large resistor when measuring voltage, the current flowing through the voltage sampling module 20 is negligibly small compared to the current flowing through the bus, so the voltage drop caused by the wire resistance between the voltage sampling module 20 and the bus is almost zero, which will not affect the voltage measurement result.

[0046] See also Figure 4 In the test schematic diagram of the battery bus shown in the figure, the resistor M is equivalent to the bus welding resistance to be measured, I is the current provided by the power module 10 to the bus, the resistor M1 is equivalent to the internal resistance introduced by the wire L1 connected to the first test probe 11, and the resistor M2 is equivalent to the internal resistance introduced by the wire L2 connected to the first test probe 12. When the power module 10 outputs the current I, the current flowing through the resistor M1 and the resistor M2 is the same as the current flowing through the resistor M, and U is the voltage of the bus welding resistor M collected by the voltage sampling module 20.

[0047] Among them, the wire L1, the wire L2, the resistor M, the resistor M1, and the resistor M2 form an electrical circuit, and the wire L3, the wire L4, the voltage sampling module 20 and the resistor M form an electrical circuit. Since the voltage sampling module 20 is equivalent to a large resistor when collecting the voltage U of the resistor M, the current flowing through the voltage sampling module 20 is negligibly small compared to the current flowing through the bus, so the voltage drop caused by the wire internal resistance (the internal resistance of the wire L3 and the wire L4) between the voltage sampling module 20 and the bus is almost zero, so that the voltage U of the bus welding resistor collected by the voltage sampling module 20 is not affected by the wire internal resistance.

[0048] It can be seen that by using two sets of test probes to distinguish the voltage sampling point and the current supply point, the cumulative error of the bus welding resistance caused by the internal resistance of the test device (that is, the internal resistance of the wire) can be reduced, thereby improving the test accuracy of the battery bus.

[0049] In an alternative embodiment, if Figure 3 As shown, the power module 10 includes a constant current source 101, which is used to provide a stable constant current output. By using the constant current source 101 in the power module 10 to provide a constant current, it can be ensured that the current output by the power module 10 will not change with the change of the load, so that a reliable and stable current output can be provided to the battery bus.

[0050] It is understandable that, in addition to the constant current source 101 , the power module 10 may also include some auxiliary electrical structures to assist in realizing the function of the power module 10 outputting a constant current.

[0051] In an alternative embodiment, if Figure 3 As shown, the voltage sampling module 20 includes a voltmeter 201, and the voltmeter 201 (also called a voltmeter) is used to determine the voltage of the busbar welding resistor according to the voltages collected by the two second test probes 21 and 22. By directly using the voltmeter 201 in the voltage sampling module 20 to measure the voltage of the busbar welding resistor, there is no need to design a complex sampling circuit, and the use is simple and convenient.

[0052] It is understandable that, in addition to the voltmeter 201 , the voltage sampling module 20 may also include some auxiliary electrical structures to assist the voltage sampling module 20 in collecting the busbar welding resistance voltage.

[0053] In an alternative embodiment, if Figure 3As shown, the battery bus test device may further include a test control module 30, which is respectively connected to the power module 10, the voltage sampling module 20, the two first test probes 11 and 12, and the two second test probes 21 and 22, so as to realize automatic control of the power module 10, the voltage sampling module 20, the two first test probes 11 and 12, and the two second test probes 21 and 22 through the test control module 30, thereby realizing automatic bus testing.

[0054] Specifically, the test control module 30 may include a PLC (Programmable Logic Controller). It is understandable that, in addition to the PLC, the test control module 30 may also include other auxiliary circuit structures to assist in realizing the control function of the test control module 30 .

[0055] Among them, when the test starts, the test control module 30 controls the two first test probes 11 and 12 to contact the bus and the bar of the battery respectively, and the two second test probes 21 and 22 also contact the bus and the bar respectively, and then controls the power module 10 to output a constant current, and obtains the voltage collected by the voltage sampling module 20, so that the bus welding resistance can be measured according to the constant current and the obtained voltage.

[0056] In an optional embodiment, since the needle tip of the test probe is relatively small and the welding position is usually uneven, in order to increase the contact area with the bus or the bus, multiple needle tips are provided on the first test probes 11 and 12 and the second test probes 21 and 22 to improve the conductivity between the test probes and the bus. The multiple needle tips of the first test probes 11 and 12 can be called current needles to avoid burning out the test probes due to a small current flow surface. The multiple needle tips of the second test probes 21 and 22 can be called voltage needles to reduce the voltage drop damage caused by the small contact surface.

[0057] It should be noted here that the number of needles of the first test probes 11 and 12 may be consistent with or inconsistent with the number of needles of the second test probes 21 and 22 , and this application does not limit this.

[0058] Specifically, considering the difficulty of manufacturing the needle tip of the test probe, the number of the needle tips of the test probe may be set to five.

[0059] In one embodiment, see Figure 5The test probe structure shown can be provided with a rotating screw A connected to each needle B inside the test probe, so as to control the pressing amount of the needle B by rotating the screw A. In specific implementation, in the test control module 30 of the test device, a corresponding motor module is provided for the rotating screw A, and the motor module controls the rotating screw A according to the received instructions, so that the rotating screw A can control the pressing amount of the needle B to contact the bus or the bar.

[0060] In view of the technical solution of the battery bus test device provided in the above embodiment, a test method for testing a battery bus using the test device is provided below.

[0061] Figure 6 This is a flow chart of an embodiment of a battery bus testing method according to an exemplary embodiment of the present application, which is applied to the battery bus testing device provided in the above embodiment, such as Figure 6 As shown, the battery bus testing method includes the following steps:

[0062] Step 601: Control two first test probes to contact a bus bar and a tab of a battery respectively, and control two second test probes to contact the bus bar and the tab respectively.

[0063] like Figure 7 As shown, the test device controls two first test probes to contact point A1 of the bus and point A2 of the tab on the battery respectively to provide current to the bus, and at the same time, two second test probes contact point B1 of the bus and point B2 of the tab on the battery respectively to collect the voltage across the bus welding resistor.

[0064] Among them, Figure 7 In the figure, the elliptical area where points A1 and B1 are located and the circular area where points A2 and B2 are located are the opening areas in the battery assembly process. What leaks out of the elliptical area is the bus, and what leaks out of the circular area is the tab.

[0065] It is understandable that the present application does not specifically limit the assembly structure and positioning structure of the two first test probes and the two second test probes in the test device, and relevant technologies may be used to implement them.

[0066] Step 602: Obtain a constant current provided by the power module to two first test probes.

[0067] As mentioned above, after the two first test probes contact the busbars of the battery, the power module and the busbars of the battery form an electrical loop, so the constant current provided by the power module is the current passing through the busbars.

[0068] Step 603: Obtain the voltage formed between two second test probes.

[0069] Specifically, as mentioned above, after the two second test probes contact the bus of the battery, the voltage sampling module and the bus of the battery also form an electrical circuit, and a voltmeter is used in the voltage sampling module to monitor the circuit voltage. Therefore, the voltage value collected by the voltmeter in the voltage sampling module can be read as the voltage formed between the two second test probes, that is, the voltage of the bus.

[0070] Step 604: Determine the busbar welding resistance of the battery according to the constant current and voltage.

[0071] In this step, since the constant current provided by the power module is the current flowing through the bus, and the voltage collected by the voltage sampling module is the voltage across the bus, the bus welding resistance can be obtained by dividing the voltage by the constant current.

[0072] At this point, the above Figure 6 The battery bus test process shown in the figure separates the voltage sampling and current supply by setting two groups of test probes to reduce the interference of the internal resistance of the test device, thereby reducing the cumulative error of the internal resistance of the test device on the bus welding resistance and improving the test accuracy of the battery bus.

[0073] The above description of various embodiments tends to emphasize the differences between the various embodiments. The same or similar parts can be referenced to each other, and for the sake of brevity, they will not be repeated in this article.

[0074] Those skilled in the art will appreciate that, in the above method of a specific embodiment, the order in which the steps are written does not imply a strict execution order and does not constitute any limitation on the implementation process. The specific execution order of the steps should be determined by their functions and possible internal logic.

[0075] Based on the battery bus testing device described in the above embodiment, the embodiment of the present application also provides a battery bus testing system, which includes an actuator and multiple testing devices described in the above embodiment, and the actuator is used to roughly align each testing device with each bus of the battery. When testing all the buses on the battery, each testing device controls the test probe to make precise contact with the corresponding bus, thereby improving the conductivity between the test probe and the bus.

[0076] It can be understood that the present application does not specifically limit the technology of the actuator to achieve rough alignment of each test device with each bus of the battery. For example, the actuator may include a vertical transmission mechanism, a horizontal transmission mechanism, a test plate, and a rotating mechanism. Multiple test devices are arranged on the test plate. The vertical and horizontal movements of the test plate are controlled by the vertical transmission mechanism and the horizontal transmission mechanism, and the angle is adjusted by the rotating mechanism to align with each bus on the battery wiring harness isolation plate.

[0077] The embodiment of the present application also provides an electronic device corresponding to the battery bus testing method provided in the above embodiment, so as to execute the above battery bus testing method.

[0078] Figure 7 This is a hardware structure diagram of an electronic device according to an exemplary embodiment of the present application, and the electronic device may include: a communication interface 601, a processor 602, a memory 603 and a bus 604; wherein the communication interface 601, the processor 602 and the memory 603 communicate with each other through the bus 604. The processor 602 can execute the battery bus test method described above by reading and executing the machine executable instructions corresponding to the control logic of the battery bus test method in the memory 603. The specific content of the method is referred to the above embodiment, and will not be repeated here.

[0079] The memory 603 mentioned in this application can be any electronic, magnetic, optical or other physical storage device, and can contain storage information, such as executable instructions, data, etc. Specifically, the memory 603 can be RAM (Random Access Memory), flash memory, storage drive (such as hard disk drive), any type of storage disk (such as optical disk, DVD, etc.), or similar storage medium, or a combination thereof. The communication connection between the device network element and at least one other network element is realized through at least one communication interface 601 (which can be wired or wireless), and the Internet, wide area network, local area network, metropolitan area network, etc. can be used.

[0080] The bus 604 may be an ISA bus, a PCI bus or an EISA bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. The memory 603 is used to store programs, and the processor 602 executes the programs after receiving execution instructions.

[0081] The processor 602 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the processor 602. The above processor 602 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the embodiments of the present application can be directly embodied as a hardware decoding processor to be executed, or the hardware and software modules in the decoding processor can be combined and executed.

[0082] The electronic device provided in the embodiment of the present application and the battery bus testing method provided in the embodiment of the present application are based on the same inventive concept and have the same beneficial effects as the methods adopted, operated or implemented therein.

[0083] The present application also provides a computer-readable storage medium corresponding to the battery bus test method provided in the above embodiment. Figure 8 As shown, the computer-readable storage medium is a CD 30 on which a computer program (ie, a program product) is stored. When the computer program is run by a processor, the battery bus test method provided by any of the aforementioned embodiments will be executed.

[0084] It should be noted that examples of the computer-readable storage medium may also include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other optical or magnetic storage media, which are not listed here one by one.

[0085] The computer-readable storage medium provided in the above-mentioned embodiments of the present application and the battery bus testing method provided in the embodiments of the present application are based on the same inventive concept and have the same beneficial effects as the methods adopted, run or implemented by the application programs stored therein.

[0086] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0087] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0088] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A battery bus testing device, characterized in that: The device comprises: two first test probes, two second test probes, a power supply module, and a voltage sampling module; The two first test probes are respectively connected to two ends of the power module through wires; The two second test probes are respectively connected to two ends of the voltage sampling module through wires; The two first test probes respectively contact the bus and the tab of the battery, and the two second test probes also respectively contact the bus and the tab.

2. The device according to claim 1, characterized in that The power supply module includes a constant current source.

3. The device according to claim 1, characterized in that The voltage sampling module includes a voltmeter.

4. The device according to claim 1, characterized in that The first test probe and the second test probe are both provided with a plurality of needles.

5. The device according to claim 4, characterized in that The first test probe and the second test probe are both provided with a rotating screw connected with the plurality of needles.

6. The device according to any one of claims 1 to 5, characterized in that: The device further includes: a test control module; the test control module is respectively connected to the power supply module, the voltage sampling module, the two first test probes, and the two second test probes.

7. A battery bus testing method, characterized in that: Applied to the testing device according to any one of claims 1 to 6 above, the method comprises: Controlling two first test probes to contact a bus bar and a tab of a battery respectively, and controlling two second test probes to contact the bus bar and the tab respectively; Obtaining a constant current provided by the power module to the two first test probes; obtaining a voltage formed between the two second test probes; A busbar welding resistance of the battery is determined according to the constant current and the voltage.

8. A battery bus test system, characterized in that: The system comprises an actuator and a plurality of test devices as described in any one of claims 1 to 6, wherein the actuator is used to align each test device with each bus bar of the battery respectively.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the steps of the method according to claim 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method according to claim 7 are implemented.

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