Electrical performance testing equipment, electrical performance testing equipment control method and device

Abstract

The present application relates to an electrical performance testing device, an electrical performance testing device control method and a device. The device includes a cooling component for reducing the ambient temperature of the testing environment; a detection component for performing electrical performance testing on the test piece in the testing environment; the controller controls the cooling component to operate when the test piece is transmitted to the detection component, and after the cooling component operates, controls the detection component to perform electrical performance testing on the test piece, wherein the detection component includes an upper fixture and a lower fixture arranged opposite to the upper fixture; the test piece includes at least two thermistors to be tested; the lower fixture includes a detection area that is consistent with the number of thermistors to be tested, and the detection area is used to place the thermistors to be tested; the cooling component embedded in the upper fixture is arranged opposite to each detection area of ​​the lower fixture. The use of this device can not only reduce the misjudgment rate of battery performance inspection, but also reduce the impact on the production capacity of battery components.

Description

Technical Field

[0001] The present application relates to the field of performance testing technology, and in particular to an electrical performance testing device, an electrical performance testing device control method, an apparatus, a computer device, a storage medium, and a computer program product. Background Art

[0002] With the rapid development of the new energy battery industry, the production efficiency requirements for battery component connection systems are getting higher and higher. In order to reduce labor costs and control quality risks, the production method of battery component connection systems mostly adopts automated continuous production. In the automated continuous production process, the hot riveting process and laser welding process require local heating of the component products, which can easily cause inconsistent ambient temperatures at different locations of the component products, thereby causing the component products to fail to meet the requirements of electrical performance inspections and cause production line stoppages.

[0003] In order to reduce the misjudgment rate of the electrical performance inspection of component products, the method usually adopted is the electrical inspection delay procedure, that is, after the laser welding process in the automated continuous production, an extended time is added before the electrical performance inspection to reduce the detection misjudgment rate caused by the inconsistent temperature at different positions of the component products. Although this can reduce the misjudgment rate of the electrical performance inspection of the battery component connection system in the automated continuous production process to a certain extent, it also seriously reduces the production efficiency of the battery component and affects the production capacity of the automated production of the battery component connection system. Summary of the invention

[0004] Based on this, it is necessary to provide an electrical performance testing equipment, an electrical performance testing equipment control method, an apparatus, a computer device, a computer-readable storage medium and a computer program product to address the above-mentioned technical problems, which can not only reduce the misjudgment rate of battery performance inspection, but also reduce the impact on the production capacity of battery components.

[0005] In a first aspect, the present application provides an electrical performance testing device, the device comprising a cooling component, a testing component, and a controller respectively communicatively connected to the cooling component and the testing component; the cooling component is used to reduce the ambient temperature of the testing environment; the testing component is used to perform electrical performance testing on the device to be tested in the testing environment; the controller controls the cooling component to operate when the device to be tested is transmitted to the testing component, and controls the testing component to perform electrical performance testing on the device to be tested after the cooling component operates; wherein the testing component comprises an upper fixture and a lower fixture arranged opposite to the upper fixture; the device to be tested is arranged on the lower fixture, and the cooling component is embedded in the upper fixture; the device to be tested comprises at least two thermistors to be tested; the lower fixture comprises a testing area consistent with the number of the thermistors to be tested, and the testing area is used to place the thermistors to be tested; the cooling component embedded in the upper fixture is arranged opposite to each of the testing areas of the lower fixture.

[0006] The above-mentioned electrical performance testing equipment is provided with a cooling component, a testing component, and a controller respectively communicatively connected to the cooling component and the testing component. When the workpiece to be tested is transmitted from the upstream workstation of the production line to the testing component, the controller can first control the operation of the cooling component to reduce the ambient temperature of the testing environment, speed up the speed at which the temperatures of various positions of the workpiece to be tested tend to be consistent, so that the workpiece to be tested can be tested for electrical performance at a stable ambient temperature, effectively reduce the detection misjudgment rate caused by inconsistent temperatures of different positions of the workpiece to be tested due to the upstream preparation process of the production line, such as the laser welding process, and improve the accuracy of electrical performance testing. By setting a cooling component that can quickly stabilize the temperature, the time spent on the workpiece to be tested for electrical performance testing can also be reduced, thereby achieving the effect of improving the accuracy of electrical performance testing while reducing the impact on the production line's production capacity.

[0007] By designing the fixture of the detection component to be a vertically actuated electrical measurement component including an upper fixture and a lower fixture, the production efficiency of automated continuous production can be effectively improved. By arranging the cooling component in an embedded manner on the upper fixture, the stability of the setting of the cooling component on the electrical performance detection equipment can be improved, and the additional space and workstation of the integrated automated equipment can be avoided when setting the cooling component. Reasonable design can be used to minimize manufacturing costs and increase profits.

[0008] By dividing a corresponding detection area on the lower fixture for each thermistor to be tested in the test piece, and arranging a cooling component at a relative position above each detection area, the cooling component can be controlled to specifically cool down the detection environment where the thermistor to be tested with strong temperature sensitivity is located, thereby accelerating the speed at which the ambient temperature of each thermistor to be tested converges to a uniform level.

[0009] In some embodiments, the upper jig includes at least two segmented jigs, and each of the segmented jigs is disposed on the same plane in an initial state.

[0010] In the above embodiment, the segmented design reduces the risk of poor contact of the DUT due to deformation of the upper fixture during testing, thereby effectively improving the accuracy of electrical performance testing of the DUT.

[0011] In some embodiments, the cooling assembly includes an air blower.

[0012] In the above embodiment, the air blowing member can accelerate the air circulation in the detection environment by blowing air into the detection environment, thereby accelerating the speed at which the temperatures of various detection positions of the test piece tend to be consistent.

[0013] In some embodiments, a standard component corresponding to the thermistor to be tested is arranged in the detection area.

[0014] In the above embodiment, by setting corresponding standard parts for the thermistor to be tested in the detection area where the thermistor to be tested is located, the effectiveness of the thermistor to be tested can be further judged, the risk of missed detection of the test piece due to failure of all thermistors in the test piece can be reduced, and the safety and reliability of the produced battery assembly connection system in practical application can be improved.

[0015] In the second aspect, the present application also provides a method for controlling an electrical performance testing device. The electrical performance testing device includes a testing component and a cooling component; the testing component includes an upper fixture and a lower fixture arranged opposite to the upper fixture; the piece to be tested is arranged on the lower fixture, and the cooling component is embedded in the upper fixture; the piece to be tested includes at least two thermistors to be tested; the lower fixture includes a detection area that is consistent with the number of the thermistors to be tested, and the detection area is used to place the thermistors to be tested; the cooling component embedded in the upper fixture is arranged opposite to each of the detection areas of the lower fixture; the method includes: when the piece to be tested is transmitted to the testing component, controlling the cooling component in the electrical performance testing device to operate; after the cooling component operates, performing electrical performance testing on the piece to be tested.

[0016] According to the above-mentioned control method of electrical performance testing equipment, when the workpiece to be tested is transferred from the upstream workstation of the production line to the testing component, the controller can first control the operation of the cooling component to reduce the ambient temperature of the testing environment, speed up the speed at which the temperatures of various positions of the workpiece to be tested converge to be consistent, and enable the workpiece to be tested to undergo electrical performance testing at a stable ambient temperature. This effectively reduces the detection misjudgment rate caused by inconsistent temperatures at different positions of the workpiece to be tested due to upstream production line preparation processes, such as laser welding processes, and improves the accuracy of electrical performance testing. By providing a cooling component that can quickly stabilize the temperature, it is also possible to reduce the time spent on electrical performance testing of the workpiece to be tested, thereby achieving the effect of improving the accuracy of electrical performance testing while reducing the impact on the production line's production capacity.

[0017] In some embodiments, the electrical performance test includes thermistor testing; the electrical performance test of the device under test includes: obtaining the operating time of the cooling component; when the operating time of the cooling component reaches a preset cooling time, performing thermistor testing on the device under test.

[0018] In the above embodiment, the cooling time is preset to determine whether the operating effect of the cooling component meets the detection conditions, and the thermistor detection is performed on the test piece only when the detection conditions are met. This can effectively improve the accuracy of the thermistor detection of the test piece and reduce the probability of misjudgment.

[0019] In some embodiments, the electrical performance test includes a preliminary performance test and a thermistor test; the electrical performance test on the DUT includes: performing a preliminary test on the DUT; and after the preliminary test is completed, performing a thermistor test on the DUT.

[0020] In the above embodiment, by first performing a preliminary test on the piece to be tested, and then performing a thermistor test on the piece to be tested after the preliminary test is completed, that is, the thermistor test is separated from the preliminary test and placed at the end of the electrical performance test. This can give the piece to be tested enough time to stabilize its temperature without affecting the production rhythm, effectively reducing the probability of misjudgment due to thermistor detection, improving the accuracy of electrical performance testing, and thereby improving the production efficiency of the battery assembly connection system.

[0021] In some embodiments, when the preliminary detection is completed, the thermistor detection is performed on the device to be tested, including: when the preliminary detection is completed, controlling the cooling component to continue running for a preset waiting time and then stop running; performing thermistor detection on the device to be tested.

[0022] In the above embodiment, by setting a preset waiting time, the success rate of temperature stabilization of the device under test can be effectively improved, thereby reducing the probability of misjudgment due to thermistor detection.

[0023] In some embodiments, the device to be tested includes at least two thermistors to be tested; the thermistor detection of the device to be tested includes: obtaining a detection resistance value of each thermistor to be tested; determining a detection temperature of each thermistor to be tested according to each detection resistance value; performing a temperature consistency comparison on each detection temperature to obtain a consistency comparison result; and determining a thermistor detection result of each thermistor to be tested based on the consistency comparison result.

[0024] In the above embodiment, by determining the detection temperature of each thermistor to be tested and comparing the temperature consistency of each detection temperature, it is possible to quickly determine whether the part to be tested meets the production requirements, thereby effectively improving product production efficiency and use safety.

[0025] In some embodiments, determining the thermistor detection result of each thermistor to be tested based on the consistency comparison result includes: when the consistency comparison result is that the thermistor to be tested meets the temperature consistency condition, obtaining the standard resistance value of the standard part corresponding to each thermistor to be tested; determining the standard temperature of each standard part according to the standard resistance value; for each thermistor to be tested, performing a validity detection on the thermistor to be tested according to the detection temperature of the thermistor to be tested and the standard temperature of the standard part corresponding to the thermistor to be tested; when the thermistor to be tested meets the validity condition, determining that the thermistor detection result of the thermistor to be tested is qualified.

[0026] In the above embodiment, the effectiveness of the thermistor to be tested is detected according to the standard temperature of the standard part corresponding to the thermistor to be tested, which can further determine the effectiveness of the thermistor to be tested, reduce the risk of missed detection of the part to be tested due to failure of all thermistors in the part to be tested, and improve the safety and reliability of the battery assembly connection system produced in actual application.

[0027] In a third aspect, the present application also provides a control device for electrical performance testing equipment. The device comprises:

[0028] A cooling unit operation control module, used for controlling the operation of the cooling component in the electrical performance testing equipment when the test piece is transmitted to the testing component; the electrical performance testing equipment includes a testing component and a cooling component; the testing component includes an upper fixture and a lower fixture arranged opposite to the upper fixture; the test piece is arranged on the lower fixture, and the cooling component is embedded in the upper fixture; the test piece includes at least two thermistors to be tested; the lower fixture includes a detection area that is the same in number as the thermistors to be tested, and the detection area is used to place the thermistors to be tested; the cooling component embedded in the upper fixture is arranged opposite to each of the detection areas of the lower fixture;

[0029] The electrical performance detection module is used to perform electrical performance detection on the test piece after the cooling assembly is running.

[0030] In a fourth aspect, the present application further provides a computer device, wherein the computer device comprises a memory and a processor, wherein the memory stores a computer program, and the processor implements the specific steps of the above method when executing the computer program.

[0031] In a fifth aspect, the present application further provides a computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the specific steps of the above method are implemented.

[0032] In a sixth aspect, the present application further provides a computer program product, wherein the computer program product comprises a computer program, and when the computer program is executed by a processor, the specific steps of the above method are implemented.

[0033] The above-mentioned electrical performance testing equipment, electrical performance testing equipment control method, device, computer equipment, storage medium and computer program product, the electrical performance testing equipment is provided with a cooling component, a detection component, and a controller respectively communicatively connected to the cooling component and the detection component. When the workpiece to be tested is transmitted from the upstream workstation of the production line to the detection component, the controller can first control the operation of the cooling component to reduce the ambient temperature of the detection environment, accelerate the speed at which the temperatures of various positions of the workpiece to be tested tend to be consistent, so that the workpiece to be tested can be subjected to electrical performance testing at a stable ambient temperature, effectively reduce the detection misjudgment rate caused by inconsistent temperatures of different positions of the workpiece to be tested due to the upstream preparation process of the production line, such as the laser welding process, and improve the accuracy of electrical performance testing. By setting a cooling component that can quickly stabilize the temperature, the time spent on the workpiece to be tested for electrical performance testing can also be reduced, thereby achieving the effect of improving the accuracy of electrical performance testing while reducing the impact on the production line's production capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural block diagram of an electrical performance detection device in some embodiments;

[0035] Figure 2 It is a schematic diagram of the structure of the detection component of the electrical performance detection equipment in some embodiments;

[0036] Figure 3 It is a schematic diagram of the structure of the upper fixture of the detection component in some embodiments;

[0037] Figure 4 A schematic diagram of the composition of an automated continuous production device for a battery assembly connection system in some embodiments;

[0038] Figure 5It is a schematic diagram of the structure of the electrical performance detection device in some embodiments;

[0039] Figure 6 It is a perspective structural schematic diagram of the upper and lower fixtures in some embodiments;

[0040] Figure 7 A schematic diagram of a flow chart of a method for controlling an electrical performance detection device in some embodiments;

[0041] Figure 8 A schematic diagram of a process of performing electrical performance testing on a DUT in some embodiments;

[0042] Fig. 9 A schematic diagram of a process of performing electrical performance testing on a device to be tested in some other embodiments;

[0043] Fig.10 A schematic diagram of a process of performing thermistor detection on a device to be tested in some embodiments;

[0044] Fig.11 A schematic diagram of a process for determining thermistor detection results of each thermistor to be tested based on the consistency comparison results in some embodiments;

[0045] Fig.12 A schematic diagram of a flow chart of a method for controlling an electrical performance detection device in other embodiments;

[0046] Fig.13 A schematic diagram of the detection method of thermistor detection in some embodiments;

[0047] Fig.14 It is a structural block diagram of a control device for an electrical performance detection device in some embodiments;

[0048] Fig.15 1 is a diagram of the internal structure of a computer device in some embodiments. DETAILED DESCRIPTION

[0049] 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.

[0050] 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.

[0051] Reference to "embodiments" herein means that the specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least some embodiments of the present application. The appearance of the phrase in various places 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.

[0052] 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).

[0053] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0054] 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.

[0055] The Cells Contact System (CCS) is an electrical connection structure within the battery module and an indispensable part of electric vehicles and energy storage systems. It is mainly responsible for the connection between battery modules and between the battery module and the entire vehicle system or energy storage system.

[0056] The battery assembly connection system is usually produced in an automated continuous production manner. The production process can mainly include hot riveting, laser welding, electrical performance testing and appearance inspection of semi-finished flexible circuit boards. In the automated continuous production process, the hot riveting process and laser welding process will locally heat the product, which will cause inconsistent ambient temperatures at different detection locations of the assembly product. In electrical performance testing equipment, such as electrical performance inspection stations, the test piece needs to meet different detection locations, such as the temperature difference at different thermistor locations within 2°C. In order to enable the assembly product to meet the detection temperature requirements, the commonly used method is electrical inspection delay, that is, after laser welding, a delay time is added before the electrical performance test, and the electrical performance test is performed after the ambient temperature of each detection location on the assembly to be tested is stable and consistent, so as to improve the pass rate of the electrical performance test of the assembly product and reduce the misjudgment rate of the electrical performance test.

[0057] However, if you want to make the ambient temperature of different inspection positions of the component products consistent after hot riveting and laser welding, you need to wait long enough. For example, if you want to make the temperature of different inspection positions of the component products consistent, you may need to wait for 120 seconds, while the automated production cycle of the battery component connection system can be considered to be 40 seconds. Obviously, the waiting time required by the electrical inspection delay method means that in order to meet the production capacity, the cost investment needs to be increased by about 3 times.

[0058] In order to meet the needs of mass production of components, a cooling component can be set in the electrical performance testing equipment of the battery component connection system, that is, the electrical performance testing equipment can include a cooling component, a testing component, and a controller that is respectively communicated with the cooling component and the testing component. When the test piece is transmitted from the upstream workstation of the production line to the testing component, the controller can first control the operation of the cooling component to reduce the ambient temperature of the testing environment, speed up the speed at which the temperatures of various positions of the test piece converge to be consistent, and enable the test piece to be tested to perform electrical performance testing at a stable ambient temperature, effectively reduce the detection misjudgment rate caused by inconsistent temperatures of different test positions of the test piece due to the upstream preparation process of the production line, such as laser welding process, and improve the accuracy of electrical performance testing. By setting a cooling component that can quickly stabilize the temperature, the time spent on the test piece to be tested for electrical performance testing can also be reduced, thereby achieving the effect of improving the accuracy of electrical performance testing while reducing the impact on the production line's production capacity.

[0059] Based on this, Figure 1 As shown, in some embodiments, an electrical performance testing device 100 is provided, which is one of the automated continuous production equipment of the battery component connection system. The electrical performance testing device 100 includes a cooling component 101, a testing component 102, and a controller 103 that is communicatively connected to the cooling component 101 and the testing component 102, respectively.

[0060] Wherein, cooling assembly 101 is mainly used to reduce the ambient temperature of the detection environment. Cooling assembly 101 can make the temperature of each detection position of the test piece in the detection environment quickly reduced to a stable state by reducing the ambient temperature of the detection environment. It can be understood that cooling assembly 101 can be any assembly that can realize reducing the ambient temperature of the detection environment, for example, it can be a blowing assembly, which accelerates the air flow by blowing to achieve the purpose of rapidly reducing the temperature to a stable state. It can also be a water cooling assembly, which can quickly reduce the ambient temperature of the detection environment to a stable state by using the low temperature property of cooling water. It can also be a nitrogen cooling assembly, which can quickly reduce the ambient temperature of the detection environment to a stable state by the refrigeration principle of nitrogen. Similarly, cooling assembly 101 can be arranged at any position in the electrical performance detection device 100, as long as it can reduce the ambient temperature of the detection environment of the electrical performance detection device 100 without affecting the accuracy of electrical performance detection.

[0061] The detection component 102 is a performance detection component used to perform electrical performance detection on the part to be tested. It can perform corresponding electrical performance detection on the part to be tested according to actual production needs. The types of electrical performance detection that the detection component 102 can perform include but are not limited to contact resistance detection, high-voltage insulation detection, line resistance detection, welding internal resistance detection, thermistor detection, etc.

[0062] The parts to be tested are component products produced through continuous production processes of various battery component connection systems before electrical performance testing. By conducting electrical performance testing on the parts to be tested, it can be determined whether the parts to be tested meet production requirements, thereby reducing the risk of the outflow of parts to be tested that do not meet the requirements.

[0063] In some embodiments, in the automated continuous production process, the production process before the electrical performance test, such as the hot riveting process and the laser welding process, requires local heating of the test piece when the test piece is produced, which may easily cause the temperature of different positions of the test piece flowing into the electrical performance testing device 100 for electrical performance testing to be inconsistent. Therefore, when the test piece is transmitted to the testing component 103, the controller 103 can control the cooling component 101 to operate to reduce the ambient temperature of the testing environment and speed up the speed at which the temperature of each position of the test piece tends to be consistent. After controlling the cooling component 101 to operate, the controller 103 can control the testing component 102 to perform electrical performance testing on the test piece.

[0064] The above-mentioned electrical performance testing equipment is provided with a cooling component, a testing component, and a controller respectively communicatively connected to the cooling component and the testing component. When the workpiece to be tested is transmitted from the upstream workstation of the production line to the testing component, the controller can first control the operation of the cooling component to reduce the ambient temperature of the testing environment, speed up the speed at which the temperatures of various positions of the workpiece to be tested tend to be consistent, so that the workpiece to be tested can be tested for electrical performance at a stable ambient temperature, effectively reduce the detection misjudgment rate caused by inconsistent temperatures of different positions of the workpiece to be tested due to the upstream preparation process of the production line, such as the laser welding process, and improve the accuracy of electrical performance testing. By setting a cooling component that can quickly stabilize the temperature, the time spent on the workpiece to be tested for electrical performance testing can also be reduced, thereby achieving the effect of improving the accuracy of electrical performance testing while reducing the impact on the production line's production capacity.

[0065] In some of the embodiments, in order to further improve the accuracy of the electrical performance test, the test items included in the electrical performance test can be divided into a pre-test and a thermistor test.

[0066] Among them, the correlation between the test results of the test items included in the preliminary test and the temperature of the test piece does not meet the high correlation condition, that is, the change in the temperature of the test piece will not affect the detection accuracy of each test item in the preliminary test, or the impact can be ignored. For example, the preliminary test may include contact resistance detection, high-voltage insulation detection, line resistance detection, welding internal resistance detection and other detection items. Thermistor detection, as the name suggests, is a test item for electrical performance testing of thermistors in the test piece. Since the resistance value of thermistors is extremely sensitive to temperature, its resistance value is easily changed with changes in temperature. Therefore, thermistor detection can be separated from the original electrical performance main inspection procedure and performed separately to reduce the impact of temperature on it and improve the accuracy of electrical performance testing of the test piece.

[0067] When the electrical performance test is divided into preliminary test and thermistor test, after the controller controls the cooling component to operate, since the detection accuracy of the test items included in the preliminary test will not be affected by the change of temperature, the controller can directly perform the preliminary test on the piece to be tested first. While performing the preliminary test, the cooling component also continues to cool down the piece to be tested. After the preliminary test is completed, the temperature of the piece to be tested has reached or is close to a constant temperature, and the controller then controls the detection component to perform thermistor test on the piece to be tested, which can effectively reduce the probability of misjudgment due to thermistor detection, improve the accuracy of electrical performance testing, and thereby improve the production efficiency of the battery assembly connection system.

[0068] To further improve the accuracy of electrical performance testing, in some embodiments, the controller may wait for a preset waiting time, such as 5 seconds, before controlling the detection component to perform thermistor testing on the device under test.

[0069] Among them, the cooling component is a key component to improve the accuracy of the electrical performance detection of the DUT. In some embodiments, such as Figure 2 As shown, the detection assembly may include an upper fixture 1021 and a lower fixture 1022 disposed opposite to the upper fixture 1021. The test piece 201 is disposed on the lower fixture 1022, and the cooling assembly 101 is disposed on the upper fixture 1021.

[0070] In order to enable the cooling component 101 to be more stably arranged in the electrical performance testing equipment and improve the production efficiency of automated continuous production, the fixture of the testing component can be designed as a vertically actuated electrical testing component including an upper fixture 1021 and a lower fixture 1022 arranged relatively. The cooling component 101 is arranged on the upper fixture 1021 in an embedded manner, and the test piece 201 that needs to be tested for electrical performance is arranged on the lower fixture 1022 when entering the testing component.

[0071] In some of the embodiments, when the test piece 201 needs to be tested for electrical properties, it will be transferred to the lower jig 1022 of the electrical properties testing equipment, and the upper jig 1021 of the electrical properties testing equipment is provided with a cooling component 101. When the controller determines that the test piece 201 has been transferred to the lower jig 1022, it will control the cooling component 101 embedded in the upper jig 1021 to operate, so as to cool down the entire testing environment.

[0072] In the above embodiment, by designing the fixture of the detection component to be a vertically actuated electrical measurement component including an upper fixture and a lower fixture, the production efficiency of automated continuous production can be effectively improved, and the cooling component is arranged on the upper fixture in an embedded manner, which can not only improve the setting stability of the cooling component on the electrical performance detection equipment, but also can avoid adding additional space and workstations to the integrated automated equipment when setting the cooling component. Reasonable design can be used to minimize manufacturing costs and increase profits.

[0073] In some embodiments, the device to be tested includes at least two thermistors to be tested, and the lower fixture can protect a number of detection areas that is consistent with the number of thermistors to be tested, and each detection area is used to place a corresponding thermistor to be tested.

[0074] Among them, thermistor is a kind of resistor whose resistance value is extremely sensitive to temperature, also called semiconductor resistor, and its resistance value changes with the change of temperature. In the battery assembly connection system, thermistor is one of the key components. Therefore, electrical performance testing of thermistor in the DUT is an important means to determine whether the DUT meets production requirements.

[0075] In order to accurately detect the thermistors to be tested, the lower fixture can be provided with detection areas that are consistent with the number of thermistors to be tested on the test piece. For example, if there are 5 thermistors on the test piece, the lower fixture can be provided with 5 detection areas. The setting position of each detection area is consistent with the setting position of the thermistor to be tested on the test piece, and each detection area can be placed with a thermistor to be tested. The cooling components embedded in the upper fixture are arranged relative to the detection areas of the lower fixture, that is, the corresponding cooling components are arranged at the relative upper position of the detection area where each thermistor to be tested is located.

[0076] It should be noted that the detection area of ​​the lower fixture can be a physical area, such as a detection area divided by physical accessories, or a detection area divided in space, that is, there is no corresponding detection area physically, but when the piece to be tested is transmitted to the lower fixture, the area where the thermistor to be tested in the piece to be tested is located is spatially divided into the detection area in the lower fixture through the detection areas set for the lower fixture.

[0077] In some of the embodiments, after the piece to be tested is transferred to the lower fixture, each thermistor to be tested on the piece to be tested is respectively in a corresponding detection area on the lower fixture, and the controller can control the operation of the cooling components above the detection area where each thermistor to be tested is located to reduce the ambient temperature of the detection environment, thereby accelerating the speed at which the ambient temperature of the detection area where the thermistor to be tested is located converges to a uniform state.

[0078] In the above embodiment, by dividing corresponding detection areas on the lower fixture for each thermistor to be tested in the test piece, and arranging a cooling component at a relative position above each detection area, the cooling component can be controlled to specifically cool down the detection environment where the thermistor to be tested with strong temperature sensitivity is located, thereby accelerating the speed at which the ambient temperature of each thermistor to be tested converges to a uniform level.

[0079] In some of the embodiments, the upper jig and / or the lower jig of the electrical performance testing equipment may also be provided with performance testing components, and the controller may control the upper jig and the lower jig to perform vertical actuation, and use the electrical performance testing components to perform electrical performance testing on the test piece located on the lower jig.

[0080] Furthermore, in order to reduce the risk of poor contact during testing of the test piece due to deformation of the upper fixture, in some embodiments, Figure 3As shown, the upper fixture 1021 may include at least two segmented fixtures 10211 , and each segmented fixture 10211 is arranged on the same plane in an initial state.

[0081] Typically, the fixture style in electrical performance testing equipment is an integral structure. However, due to the long length of the overall structure, even if the usual overall structure is designed as a vertical actuation structure of the upper and lower fixtures, the upper fixture 1021 may be easily deformed due to its large overall area, thereby causing the performance testing parts provided on the upper fixture 1021 to be affected by the deformation and cause poor test contact.

[0082] Therefore, in some of the embodiments, in order to improve the detection accuracy, the upper jig 1021 can be designed in segments, that is, the upper jig 1021 that was originally an integral whole is split into multiple segmented jigs 10211. The segmented jigs 10211 are all in the same plane in the initial state, that is, in the non-detection state, and when it is necessary to perform electrical performance testing on the piece to be tested 201 on the lower jig 1022, they can be vertically actuated simultaneously or individually relative to the lower jig 1022, so that the performance testing parts arranged on the upper jig 1021 can perform corresponding electrical performance testing on the piece to be tested 201 under the condition of good contact. The segmented design reduces the risk of poor contact of the piece to be tested 201 during detection due to deformation of the upper jig 1021, and effectively improves the accuracy of electrical performance testing on the piece to be tested 201.

[0083] In the above embodiments, it is mentioned that the cooling component can be any component that can reduce the ambient temperature of the detection environment. In order to increase the difficulty of setting the cooling component and the cooling effect, in some embodiments, the cooling component can include a blowing piece.

[0084] Among them, the blowing component is a component that can accelerate the air circulation in the detection environment by blowing air to quickly reduce the temperature to a stable state.

[0085] In some embodiments, a blowing member may be provided in the electrical performance testing device. When the test piece is transferred to the testing component, the controller may control the blowing member to blow air into the testing environment to speed up the air circulation in the testing environment, thereby speeding up the speed at which the temperatures of various testing positions of the test piece tend to be consistent. After controlling the cooling component to operate, the controller controls the testing component to perform electrical performance testing on the test piece. It is understandable that the number of blowing members may be single or multiple, which is determined according to the actual testing environment of the electrical performance testing device.

[0086] In some embodiments, the blowing member may be embedded in the upper fixture, that is, the base portion of the blowing member is embedded in the upper fixture, and the blowing portion of the blowing member, such as the blowing nozzle, may be disposed opposite to the detection area of ​​the lower fixture.

[0087] When conducting electrical performance testing on a DUT, it is usually necessary to perform consistency judgment on the temperatures of the thermistors on the DUT to determine the eligibility of the DUT. However, if all the thermistors on the DUT fail, the failed thermistors cannot be detected simply by performing temperature consistency judgment on the thermistors, which can easily lead to missed judgments. When the battery assembly connection system is subsequently used in actual application, the rise in battery temperature may not be detected normally, posing certain safety risks.

[0088] Based on this, in some embodiments, a standard component corresponding to the thermistor to be tested is arranged in the detection area.

[0089] Among them, the standard parts are used to improve the accuracy of electrical performance testing of the thermistor to be tested. The set standard resistor can be used to detect the effectiveness of the thermistor to be tested.

[0090] In some of the embodiments, a standard part corresponding to the thermistor to be tested is arranged in the detection area where the thermistor to be tested is located. When thermistor detection is performed on the thermistor to be tested, a comparison test can be performed with the thermistor to be tested by using the standard part arranged in the same detection area to determine whether the thermistor to be tested is invalid, and further determine whether the part to be tested meets the production requirements.

[0091] In some of the embodiments, the standard component of the thermistor to be measured may be arranged directly below the thermistor to be measured. In the case of non-contact, the closer the standard component is to its corresponding thermistor to be measured, the better.

[0092] In the above embodiment, by setting corresponding standard parts for the thermistor to be tested in the detection area where the thermistor to be tested is located, the effectiveness of the thermistor to be tested can be further judged, the risk of missed detection of the test piece due to failure of all thermistors in the test piece can be reduced, and the safety and reliability of the produced battery assembly connection system in practical application can be improved.

[0093] In some embodiments, Figure 4 As shown in the figure, the automated continuous production equipment of the battery assembly connection system is an integrated device including a feeder, a hot riveting machine, a welding machine, an electrical performance testing machine (also called an electrical testing machine), an automatic optical inspection (AOI) machine and a feeder. As can be seen from the figure, the electrical testing machine is an intermediate device of the automated continuous production equipment of the battery assembly connection system. In actual production, a feeder is required to place the flexible circuit board on the continuous production line. Subsequently, the flexible circuit board will be subjected to hot riveting and welding treatments in turn by the hot riveting machine and the welding machine, and then flow into the electrical testing machine for electrical performance testing. After the test is completed, the AOI machine will perform appearance inspection on the flexible circuit board, and finally flow out of the continuous production line through the feeder.

[0094] In order to solve the problem that it takes too long for thermistor to be tested to maintain the same ambient temperature after hot riveting and laser welding, and the problem of misjudgment of thermistor test, in some embodiments, such as Figure 5 As shown, an electrical performance testing device, i.e., an electrical performance testing machine 500, is provided, including a controller (not shown in the figure), a lower fixture 1022 for placing a test piece, and a plurality of segmented fixtures 10211 arranged opposite to the lower fixture 1022, wherein a blowing piece, i.e., a blowing copper nozzle 501, and various performance testing pieces (not marked in the figure) are embedded in the segmented fixture 10211. A plurality of testing areas are arranged on the lower fixture 1022, and the testing areas are used to place corresponding thermistors to be tested (not shown in the figure), and each testing area is also provided with a standard piece corresponding to the thermistor to be tested (not shown in the figure).

[0095] When the part to be tested, i.e., the CCS component 502, is transferred from the welding machine to the electrical performance testing machine 500, it will be placed on the lower fixture 1022, and each thermistor to be tested in the CCS component 502 will be in the corresponding testing area. The standard part corresponding to the thermistor to be tested is arranged directly below the thermistor to be tested.

[0096] When the controller determines that the CCS component 502 has been transferred to the lower fixture 1022, it will control the blowing copper nozzle 501 embedded in the segmented fixture 10211 to blow air to the corresponding detection area to form a cooling position 601. The perspective structural diagram of the upper and lower fixtures is shown in FIG. Figure 6 By controlling the blowing copper nozzle 501 to blow air toward the detection area, the ambient temperature of the detection area can be effectively reduced, and the speed at which the ambient temperatures of the thermistors to be tested converge to be consistent can be accelerated.

[0097] After controlling the operation of the blowing copper nozzle 501, the controller can control the performance detection components set on each segmented fixture 10211 to perform preliminary detection on the CCS component 502, namely, contact resistance detection, high-voltage insulation detection, line resistance detection, and welding internal resistance detection. While performing the preliminary detection, the air flow cooling and temperature reduction operation is accelerated. The preliminary detection and cooling and temperature reduction are performed simultaneously, which can minimize the impact of the action of maintaining a constant temperature on the overall production rhythm. After the preliminary detection is completed, before performing thermistor detection on the thermistor in the CCS component 502, you can also wait for a preset waiting time, such as 5s, and then control the blowing copper nozzle 501 to stop running, that is, turn off the cooling component, and perform thermistor detection on the thermistor in the CCS component 502 to obtain the thermistor detection result. The detection content includes the temperature consistency between the thermistors in the CCS component 502, and the temperature consistency between each thermistor and its respective standard parts.

[0098] Based on the same inventive concept, Figure 7As shown, the embodiment of the present application also provides an electrical performance testing device control method applied to the above-mentioned electrical performance testing device, which is described by taking the method applied to the controller in the above-mentioned electrical performance testing device as an example, and the method includes the following steps:

[0099] S702, when the test piece is transferred to the testing component, controlling the cooling component in the electrical performance testing equipment to operate.

[0100] The cooling component is mainly used to reduce the ambient temperature of the testing environment. By reducing the ambient temperature of the testing environment, the cooling component can quickly reduce the temperature of each testing position of the test piece in the testing environment to a stable state.

[0101] The detection component is a performance detection component used to perform electrical performance detection on the part to be tested. It can perform corresponding electrical performance detection on the part to be tested according to actual production needs. The types of electrical performance detection that the detection component can perform include but are not limited to contact resistance detection, high-voltage insulation detection, line resistance detection, welding internal resistance detection, thermistor detection, etc.

[0102] The parts to be tested are component products produced through continuous production processes of various battery component connection systems before electrical performance testing. By conducting electrical performance testing on the parts to be tested, it can be determined whether the parts to be tested meet production requirements, thereby reducing the risk of the outflow of parts to be tested that do not meet the requirements.

[0103] In some embodiments, in the automated continuous production process, the production process before the electrical performance test, such as the hot riveting process and the laser welding process, requires local heating of the test piece when the test piece is produced, which may easily cause the temperature of different positions of the test piece flowing into the electrical performance testing equipment for electrical performance testing to be inconsistent. Therefore, when the test piece is transmitted to the testing component, the controller can control the cooling component to operate to reduce the ambient temperature of the testing environment and speed up the speed at which the temperature of each position of the test piece tends to be consistent.

[0104] S704, after the cooling assembly is running, the electrical performance of the DUT is tested.

[0105] In some of the embodiments, after controlling the cooling component to operate, the controller may control the detection component to perform electrical performance detection on the DUT.

[0106] According to the above-mentioned control method of electrical performance testing equipment, when the workpiece to be tested is transferred from the upstream workstation of the production line to the testing component, the controller can first control the operation of the cooling component to reduce the ambient temperature of the testing environment, speed up the speed at which the temperatures of various positions of the workpiece to be tested converge to be consistent, and enable the workpiece to be tested to undergo electrical performance testing at a stable ambient temperature. This effectively reduces the detection misjudgment rate caused by inconsistent temperatures at different positions of the workpiece to be tested due to upstream production line preparation processes, such as laser welding processes, and improves the accuracy of electrical performance testing. By providing a cooling component that can quickly stabilize the temperature, it is also possible to reduce the time spent on electrical performance testing of the workpiece to be tested, thereby achieving the effect of improving the accuracy of electrical performance testing while reducing the impact on the production line's production capacity.

[0107] In some embodiments, the electrical property detection includes thermistor detection. Figure 8 As shown, in S704, the electrical performance test of the device to be tested is performed, including:

[0108] S802: Obtain the operating time of the cooling component.

[0109] Among them, thermistor detection is a test item for the electrical performance test of thermistors in the test piece. Thermistors are a type of resistor whose resistance value is extremely sensitive to temperature, also called semiconductor resistors, and their resistance value changes with temperature. In the battery assembly connection system, thermistors are one of the key components. Therefore, electrical performance testing of thermistors in the test piece is an important means to determine whether the test piece meets production requirements.

[0110] In some of the embodiments, due to the sensitivity of the resistance value of the thermistor to temperature, in order to improve the accuracy of electrical performance detection, the controller needs to monitor the operating effect of the cooling component when performing thermistor detection on the test piece. Therefore, the controller obtains the operating time of the cooling component while controlling the operation of the cooling component.

[0111] S804: When the operation time of the cooling component reaches the preset cooling time, a thermistor test is performed on the device to be tested.

[0112] The preset cooling time is a preset time parameter used to determine whether the operation effect of the cooling component meets the thermistor detection condition, that is, whether the temperature of the test piece has reached or is close to a constant temperature. The preset cooling time can be determined by the designer based on experimental data or empirical data and pre-configured in the controller.

[0113] In some of the embodiments, after obtaining the operating time of the cooling component, the controller can compare the operating time of the cooling component with the preset cooling time. When the operating time of the cooling component reaches the preset cooling time, it means that the operating effect of the cooling component meets the thermistor detection conditions, that is, the temperature of the part to be tested has reached or is close to a constant temperature. The controller can control the detection component to perform thermistor detection on the part to be tested.

[0114] In other embodiments, if the operating time of the cooling component does not reach the preset cooling time, the cooling component continues to be controlled to operate, and the step of obtaining the operating time of the cooling component is returned to execute until the operating time of the cooling component reaches the preset cooling time.

[0115] In the above embodiment, the cooling time is preset to determine whether the operating effect of the cooling component meets the detection conditions, and the thermistor detection is performed on the test piece only when the detection conditions are met. This can effectively improve the accuracy of the thermistor detection of the test piece and reduce the probability of misjudgment.

[0116] In other embodiments, the electrical performance test may include a pre-process performance test and a thermistor test. Fig. 9 As shown, in S704, the electrical performance test of the device to be tested is performed, including:

[0117] S902, performing a pre-process inspection on the part to be tested.

[0118] Among them, in order to further improve the accuracy of electrical performance testing, the test items included in the electrical performance testing can be divided into preliminary testing and thermistor testing. The correlation between the test results of the test items included in the preliminary testing and the temperature of the test piece does not meet the high correlation condition, that is, the change in the temperature of the test piece will not affect the detection accuracy of each test item in the preliminary testing, or the impact can be ignored. For example, the preliminary testing can include contact resistance detection, high-voltage insulation detection, line resistance detection, welding internal resistance detection and other detection items.

[0119] Since the resistance value of thermistor is extremely sensitive to temperature, its resistance value is easy to change with the change of temperature. Therefore, thermistor detection can be separated from the original electrical performance main inspection procedure and performed separately to reduce the impact of temperature on it and improve the accuracy of electrical performance detection of the test piece.

[0120] In some of the embodiments, when the electrical performance test is divided into preliminary test and thermistor test, after the controller controls the cooling component to operate, since the detection accuracy of the test items included in the preliminary test will not be affected by the change of temperature, the controller can directly perform the preliminary test on the part to be tested. While performing the preliminary test, the cooling component also continues to cool down the part to be tested.

[0121] S904: When the previous test is completed, the thermistor test is performed on the device to be tested.

[0122] In some of the embodiments, after the previous detection is completed, the temperature of the device to be tested has reached or is close to a constant temperature, and the controller controls the detection component to perform thermistor detection on the device to be tested.

[0123] In the above embodiment, by first performing a preliminary test on the piece to be tested, and then performing a thermistor test on the piece to be tested after the preliminary test is completed, that is, the thermistor test is separated from the preliminary test and placed at the end of the electrical performance test. This can give the piece to be tested enough time to stabilize its temperature without affecting the production rhythm, effectively reducing the probability of misjudgment due to thermistor detection, improving the accuracy of electrical performance testing, and thereby improving the production efficiency of the battery assembly connection system.

[0124] Further, in some embodiments, S904, when the preliminary detection is completed, the thermistor detection is performed on the device to be tested, including: when the preliminary detection is completed, controlling the cooling component to continue running for a preset waiting time and then stopping the operation, and performing thermistor detection on the device to be tested.

[0125] The preset waiting time is an extended time set to improve the success rate of temperature stabilization of the device under test. The preset waiting time can be set by the designer based on experimental or empirical data.

[0126] In some of the embodiments, in order to further improve the accuracy of thermistor detection of the piece to be tested, the controller can wait for a preset waiting time, such as 5 seconds, after controlling the detection component to complete the preliminary detection of the piece to be tested and before performing thermistor detection, and then control the cooling component to turn off and perform thermistor detection on the piece to be tested.

[0127] In the above embodiment, by setting a preset waiting time, the success rate of temperature stabilization of the device under test can be effectively improved, thereby reducing the probability of misjudgment due to thermistor detection.

[0128] In some embodiments, Fig.10 As shown, the device under test includes at least two thermistors under test. Thermistor detection of the device under test includes:

[0129] S1002, obtaining the detection resistance value of each thermistor to be tested.

[0130] In some of the embodiments, the controller may perform electrical performance detection on thermistors to be tested in the test piece through the detection component to obtain the detection resistance value of each thermistor to be tested.

[0131] S1004, determining the detection temperature of each thermistor to be tested according to each detection resistance value.

[0132] In some of the embodiments, the controller may determine the detection temperature of the thermistor to be measured corresponding to each detection resistance value according to each detection resistance value.

[0133] For example, in some embodiments, the controller may determine, for each detection resistance value, a temperature matching the detection resistance value as the detection temperature of the thermistor to be measured corresponding to the detection resistance value according to a preset correspondence between the resistance value and the temperature.

[0134] For example, in other embodiments, a temperature conversion formula is pre-set in the controller. For each detection resistance value, the detection temperature corresponding to each detection resistance value can be calculated according to the temperature conversion formula, and the detection temperature is determined as the detection temperature of the thermistor to be measured corresponding to the detection resistance value.

[0135] S1006, performing temperature consistency comparison on each detected temperature to obtain a consistency comparison result.

[0136] Among them, the temperature consistency comparison is a comparison process for comparing the temperature difference between each thermistor to be tested. By comparing the temperature difference between each thermistor to be tested with the preset difference range, it can be determined whether the tested part meets the production requirements. It can be understood that the preset difference range can be determined by the designer according to the actual production requirements, for example, the preset difference range can be determined to be within 2°C.

[0137] In some of the embodiments, after obtaining the detection temperature of each thermistor to be tested, the controller can calculate the temperature difference between the detection temperature of each thermistor to be tested and the detection temperature of other thermistors for each thermistor to be tested, and compare each temperature difference with the corresponding preset difference range to obtain a consistency comparison result of the test piece.

[0138] In some of the embodiments, the consistency comparison result may include that the device under test meets the consistency condition, or that the device under test does not meet the consistency condition.

[0139] In some embodiments, when it is determined based on each detected temperature that the temperature difference between each thermistor to be tested in the device to be tested is within a preset difference range, for example, when the temperature difference between each thermistor to be tested is within 2°C, it can be determined that the consistency comparison result of the device to be tested is that the device to be tested meets the consistency condition. Conversely, when it is determined based on each detected temperature that the temperature difference between each thermistor to be tested in the device to be tested is not within the preset difference range, for example, when the temperature difference between a thermistor to be tested and other thermistors to be tested exceeds 2°C, it can be determined that the consistency comparison result of the device to be tested is that the device to be tested does not meet the consistency condition.

[0140] S1008, determining thermistor detection results of each thermistor to be tested based on the consistency comparison result.

[0141] In some of the embodiments, after obtaining the consistency comparison result of the test piece, the controller may determine the thermistor detection result of each thermistor to be tested based on the consistency comparison result.

[0142] It can be understood that the thermistor detection result of the thermistor to be tested may include whether the thermistor to be tested is qualified.

[0143] In some of the embodiments, the thermistor detection result of the thermistor to be tested may also include the detection temperature and the detection resistance value of the thermistor to be tested, providing a data basis for the subsequent production of the battery assembly connection system.

[0144] In the above embodiment, by determining the detection temperature of each thermistor to be tested and comparing the temperature consistency of each detection temperature, it is possible to quickly determine whether the part to be tested meets the production requirements, thereby effectively improving product production efficiency and use safety.

[0145] Before thermistor detection is performed on the thermistor to be tested, there are certain detection requirements for the ambient temperature of the thermistor, that is, the ambient temperature of the thermistor should belong to the preset detection temperature range. Therefore, in some embodiments, the controller can also compare the detection temperature of each thermistor to be tested with the preset detection temperature range to determine whether the current ambient temperature of the thermistor meets the detection requirements. For example, in an electrical performance detection project, when the thermistor to be tested is tested, the ambient temperature is required to be within the range of 22 to 28 degrees, so 22 to 28 degrees can be determined as the preset detection temperature range. The controller can determine whether each detection temperature belongs to 22 to 28 degrees, and if each detection temperature belongs to 22 to 28 degrees, a subsequent temperature consistency test is performed.

[0146] In some of the embodiments, when the detected temperature is not between 22 and 28 degrees, it can be directly determined that the thermistor test of the thermistor to be tested is unqualified.

[0147] When conducting electrical performance testing on a DUT, it is usually necessary to perform consistency judgment on the temperatures of the thermistors on the DUT to determine the eligibility of the DUT. However, if all the thermistors on the DUT fail, the failed thermistors cannot be detected simply by performing temperature consistency judgment on the thermistors, which can easily lead to missed judgments. When the battery assembly connection system is subsequently used in actual application, the rise in battery temperature may not be detected normally, posing certain safety risks.

[0148] Based on this, in some embodiments, such as Fig.11 As shown, S1008, based on the consistency comparison result, determining thermistor detection results of each thermistor to be tested, including:

[0149] S1102, when the consistency comparison result shows that the tested device meets the temperature consistency condition, obtain the standard resistance value of the standard device corresponding to each of the thermistors to be tested.

[0150] Among them, the standard parts are used to improve the accuracy of the electrical performance test of the thermistor to be tested. The standard resistors can be used to test the effectiveness of the thermistor to be tested. The standard parts corresponding to the thermistor to be tested are set in the test area where the thermistor to be tested is located. When the thermistor to be tested is tested, the standard parts set in the same test area can be used to compare the thermistor to be tested to determine whether the thermistor to be tested is invalid, and then determine whether the part to be tested meets the production requirements.

[0151] In some embodiments, when the controller determines that the consistency comparison result of the device under test is that the device under test meets the temperature consistency condition, it obtains the standard resistance value of the standard component corresponding to each thermistor under test, wherein the standard resistance value is the resistance value corresponding to the corresponding standard component.

[0152] S1104, determining the standard temperature of each standard component according to each standard resistance value.

[0153] In some embodiments, the controller may determine the standard temperature of each standard component according to each standard resistance value. It is understandable that the way in which the controller determines the standard temperature of the standard component according to the standard resistance value is basically the same as the way in which the detection temperature of the thermistor to be measured is determined according to the detection resistance value of the thermistor to be measured, and will not be described in detail here.

[0154] S1106 , for each thermistor to be tested, according to the detection temperature of the thermistor to be tested and the standard temperature of the standard component corresponding to the thermistor to be tested, perform a validity test on the thermistor to be tested.

[0155] The validity test is a test procedure used to determine whether the thermistor to be tested has failed.

[0156] In some of the embodiments, for each thermistor to be tested, the controller may perform a validity test on the thermistor to be tested based on the detection temperature of the thermistor to be tested and the standard temperature of a standard component corresponding to the thermistor to be tested, to determine whether the thermistor to be tested meets the validity condition, that is, whether it is invalid.

[0157] In some of the embodiments, the controller can determine the temperature difference between the detection temperature of the thermistor to be tested and the standard temperature of the standard part corresponding to the thermistor to be tested, and determine whether the thermistor to be tested has failed based on the temperature difference and the preset effective difference range. For example, when the temperature difference falls within the effective difference range, it is determined that the thermistor to be tested meets the validity condition and the thermistor to be tested is valid. When the temperature difference does not fall within the effective difference range, it is determined that the thermistor to be tested does not meet the validity condition and the thermistor to be tested has failed. It can be understood that the effective difference range can be determined by the designer based on experimental data or empirical data. For example, the effective difference range can be the same as the preset difference range used when performing temperature consistency comparison.

[0158] S1108, when the thermistor to be tested meets the validity condition, determining that the thermistor test result of the thermistor to be tested is qualified.

[0159] In some of the embodiments, when the controller determines that the thermistor to be tested meets the validity condition, it means that the temperature difference between the thermistor to be tested and other thermistors to be tested is within a preset difference range, and the thermistor to be tested is not invalid. The controller can determine that the thermistor detection result of the thermistor to be tested is qualified.

[0160] In other embodiments, when the thermistor to be tested does not meet the validity condition, it can be determined that the thermistor test result of the thermistor to be tested is unqualified and the thermistor is invalid.

[0161] In the above embodiment, the effectiveness of the thermistor to be tested is detected according to the standard temperature of the standard part corresponding to the thermistor to be tested, which can further determine the effectiveness of the thermistor to be tested, reduce the risk of missed detection of the part to be tested due to failure of all thermistors in the part to be tested, and improve the safety and reliability of the battery assembly connection system produced in actual application.

[0162] In the automated continuous production process of battery component connection system products, thermal riveting and laser welding are required before electrical performance testing, both of which will increase the temperature of the product (about 200°C), and the ambient temperature is required to be in the range of 22~28°C when checking thermistor electrical measurement in the electrical performance testing project. According to the production cycle, it is difficult to cool the product to a stable temperature range within 30 seconds. It is easy to misjudge the electrical performance of thermistors under such unstable temperature conditions, which results in a low product test pass rate of only 70%.

[0163] Based on this, in some embodiments, such as Fig.12 As shown, a method for controlling an electrical performance detection device is provided, and the method is applied to Figure 5 Taking the electrical performance testing device 500 shown in the figure as an example, the method specifically includes the following steps:

[0164] S1201, determine that the test piece flows to the electrical performance testing equipment.

[0165] When the part to be tested, i.e., the CCS component, is transferred from the welding machine to the electrical performance testing equipment, i.e., the electrical performance testing machine, it will be placed on the lower fixture, and each thermistor to be tested in the CCS component will be in the corresponding testing area. The controller will only perform subsequent testing steps when it determines that the CCS component has flowed to the electrical performance testing equipment.

[0166] S1202, while controlling the cooling assembly operation, perform a preliminary inspection on the part to be tested.

[0167] When the controller determines that the CCS component has been transferred to the lower fixture, it can control the cooling component, that is, the blowing copper nozzle embedded in the segmented fixture to blow air to the corresponding detection area to form a cooling position, reduce the ambient temperature of the detection area, and accelerate the ambient temperature of each thermistor to be tested to reach a consistent temperature.

[0168] While controlling the operation of the blowing copper nozzle, the controller can control the performance test parts set on each segmented fixture to perform pre-sequence tests on the CCS components, namely, contact resistance test, high-voltage insulation test, line resistance test, and welding internal resistance test. While performing pre-sequence tests, the cooling and temperature reduction operation is accelerated. The pre-sequence test and cooling and temperature reduction are performed simultaneously, which can minimize the impact of the action of maintaining a constant temperature on the overall production rhythm.

[0169] S1203, when the preceding detection is completed, controlling the cooling component to continue operating for a preset waiting time.

[0170] After determining that the pre-sequential detection is completed, the controller continues to control the blowing copper nozzle to run for a preset waiting time.

[0171] S1204, controlling the cooling assembly to stop running, and performing a thermistor test on the part to be tested.

[0172] After controlling the air blowing nozzle to run for 5 seconds, the controller can control the air blowing nozzle to stop running, perform thermistor detection on the thermistor in the CCS component, and obtain the thermistor detection result. Fig.13 As shown, the controller obtains the resistance value of the thermistor in the CCS component through the detection circuit, and then converts the resistance value into temperature. The detection judgment content includes the temperature consistency between the thermistors of the CCS component, the temperature consistency between the thermistors and the reference standard parts, and the monitoring of the reference standard parts.

[0173] Through the electrical performance detection equipment control method in the above embodiment, the misjudgment and missed judgment of the electrical performance detection of the CCS component can be effectively reduced. The comparison of the electrical performance detection results is shown in the following table:

[0174]

[0175] It can be seen from the table that the use of the electrical performance detection device and the electrical performance detection device control method in the above embodiment can effectively reduce the misjudgment and missed judgment of the electrical performance detection of the CCS component and improve the accuracy of the electrical performance detection of the CCS component.

[0176] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0177] Based on the same inventive concept, the embodiment of the present application also provides an electrical performance detection device control device for implementing the electrical performance detection device control method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more electrical performance detection device control device embodiments provided below can refer to the limitations of the electrical performance detection device control method above, and will not be repeated here.

[0178] In some embodiments, Fig.14As shown, an electrical performance detection equipment control device 1400 is provided, comprising: a cooling unit operation control module 1401 and an electrical performance detection module 1402, wherein:

[0179] The cooling unit operation control module 1401 is used to control the operation of the cooling component in the electrical performance testing equipment when the test piece is transferred to the testing component.

[0180] The electrical performance detection module 1402 is used to perform electrical performance detection on the DUT after the cooling assembly is running.

[0181] In some embodiments, the electrical performance detection includes thermistor detection. The electrical performance detection module is used to obtain the operating time of the cooling component; when the operating time of the cooling component reaches the preset cooling time, the thermistor detection is performed on the device to be tested.

[0182] In some embodiments, the electrical performance test includes a pre-sequence performance test and a thermistor test. The electrical performance test module is used to perform a pre-sequence test on the device to be tested; after the pre-sequence test is completed, the thermistor test is performed on the device to be tested.

[0183] In some embodiments, the electrical performance detection module is used to control the cooling component to continue running for a preset cooling time and then stop running after the previous sequential detection is completed; and to perform thermistor detection on the device to be tested.

[0184] In some embodiments, the device to be tested includes at least two thermistors to be tested. The electrical performance detection module is used to obtain the detection resistance value of each thermistor to be tested; determine the detection temperature of each thermistor to be tested according to each detection resistance value; perform temperature consistency comparison on each detection temperature to obtain a consistency comparison result; and determine the thermistor detection result of each thermistor to be tested based on the consistency comparison result.

[0185] In some embodiments, the electrical performance detection module is used to obtain the standard resistance value of the standard part corresponding to each thermistor to be tested when the consistency comparison result is that the test piece meets the temperature consistency condition; determine the standard temperature of each standard part according to each standard resistance value; for each thermistor to be tested, perform a validity test on the thermistor to be tested according to the detection temperature of the thermistor to be tested and the standard temperature of the standard part corresponding to the thermistor to be tested; when the thermistor to be tested meets the validity condition, determine that the thermistor detection result of the thermistor to be tested is qualified.

[0186] Each module in the above-mentioned electrical performance testing equipment control device can be implemented in whole or in part by software, hardware and a combination thereof. Each of the above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory in the computer device in the form of software, so that the processor can call and execute the operations corresponding to each of the above modules.

[0187] In some embodiments, a computer device is provided. The computer device may be a controller, and its internal structure diagram may be as follows: Fig.15 As shown. The computer device includes a processor, a memory and a network interface connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store data involved in the control method of the electrical performance detection device. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a method for controlling an electrical performance detection device is implemented.

[0188] Those skilled in the art will understand that Fig.15 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0189] In some embodiments, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, specific implementation steps of the above-mentioned electrical performance detection equipment control method are realized.

[0190] In some embodiments, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the specific implementation steps of the above-mentioned electrical performance detection equipment control method are realized.

[0191] In some embodiments, a computer program product is provided, including a computer program, which, when executed by a processor, implements the specific implementation steps of the above-mentioned electrical performance detection equipment control method.

[0192] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties. In addition, the acquisition, storage, processing, and transmission of data are in compliance with relevant laws and regulations.

[0193] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0194] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the 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 this specification.

[0195] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. An electrical performance testing device, characterized in that: The device includes a cooling component, a detection component, and a controller respectively connected to the cooling component and the detection component for communication; The cooling component is used to reduce the ambient temperature of the detection environment; The detection component is used to perform electrical performance detection on the test piece in the detection environment; the test piece is a component product produced through continuous production processes of each battery component connection system before the electrical performance detection; The controller controls the cooling component to operate when the DUT is transmitted to the detection component, and controls the detection component to perform electrical performance detection on the DUT after the cooling component operates; Wherein, the detection component includes an upper fixture and a lower fixture arranged opposite to the upper fixture; the piece to be tested is arranged on the lower fixture, and the cooling component is embedded in the upper fixture; the piece to be tested includes at least two thermistors to be tested; the lower fixture includes detection areas that are the same in number as the thermistors to be tested, and the detection areas are used to place the thermistors to be tested; the cooling component embedded in the upper fixture is arranged opposite to each of the detection areas of the lower fixture; The electrical performance test includes a pre-sequence test and a thermistor test. After the cooling component is running, the controller performs a pre-sequence test on the device to be tested. While performing the pre-sequence test, the cooling component continuously performs a temperature reduction process on the device to be tested. When the preliminary test is completed, the thermistor test is performed on the device to be tested; the thermistor test is a test item for testing the electrical properties of the thermistor in the device to be tested; the test accuracy of the test items included in the preliminary test will not be affected by changes in temperature.

2. The device according to claim 1, characterized in that The upper jig includes at least two segmented jigs, and each of the segmented jigs is arranged on the same plane in an initial state.

3. The device according to claim 1 or 2, characterized in that The cooling assembly includes an air blowing member.

4. The device according to claim 1, characterized in that A standard component corresponding to the thermistor to be tested is arranged in the detection area.

5. A method for controlling an electrical performance testing device, characterized in that: The electrical performance testing device comprises a testing component and a cooling component; the testing component comprises an upper fixture and a lower fixture arranged opposite to the upper fixture; the piece to be tested is arranged on the lower fixture, and the cooling component is embedded in the upper fixture; the piece to be tested comprises at least two thermistors to be tested; the lower fixture comprises a testing area with the same number as the thermistors to be tested, and the testing area is used to place the thermistors to be tested; the cooling component embedded in the upper fixture is arranged opposite to each of the testing areas of the lower fixture; the method comprises: When the test piece is transferred to the testing assembly, the cooling assembly in the electrical performance testing device is controlled to operate; the test piece is a component product produced by continuous production processes of each battery component connection system before the electrical performance test; After the cooling assembly is running, performing electrical performance testing on the test piece; The electrical performance test includes a preliminary test and a thermistor test; the electrical performance test on the device to be tested includes: performing a preliminary test on the device to be tested; when the preliminary test is completed, performing a thermistor test on the device to be tested; the thermistor test is a test item for performing an electrical performance test on the thermistor to be tested in the device to be tested; the test accuracy of the test items included in the preliminary test will not be affected by changes in temperature.

6. The method according to claim 5, characterized in that The electrical performance detection includes thermistor detection; The electrical performance test of the device under test includes: Obtaining the operating time of the cooling component; When the operation time of the cooling component reaches the preset cooling time, the thermistor detection is performed on the device under test.

7. The method according to claim 5, characterized in that When the previous test is completed, the thermistor test is performed on the device to be tested, including: When the preceding detection is completed, the cooling component is controlled to continue to run for a preset waiting time and then stop running; Perform a thermistor test on the device under test.

8. The method according to any one of claims 5 to 7, characterized in that: The device under test includes at least two thermistors under test; and the thermistor detection of the device under test includes: Obtaining the detection resistance value of each thermistor to be tested; Determining the detection temperature of each thermistor to be tested according to each detection resistance value; Performing temperature consistency comparison on each of the detected temperatures to obtain a consistency comparison result; Based on the consistency comparison result, thermistor detection results of each of the thermistors to be tested are determined.

9. The method according to claim 8, characterized in that The step of determining thermistor detection results of the thermistors to be tested based on the consistency comparison results includes: When the consistency comparison result shows that the tested piece meets the temperature consistency condition, obtaining the standard resistance value of the standard piece corresponding to each of the thermistors to be tested; Determining the standard temperature of each standard component according to each standard resistance value; For each of the thermistors to be tested, performing a validity test on the thermistor to be tested according to a detected temperature of the thermistor to be tested and a standard temperature of a standard component corresponding to the thermistor to be tested; In the case that the thermistor to be tested meets the validity condition, it is determined that the thermistor detection result of the thermistor to be tested is qualified.

10. A control device for electrical performance testing equipment, characterized in that: The device comprises: A cooling unit operation control module is used to control the operation of the cooling component in the electrical performance testing equipment when the test piece is transmitted to the testing component; the electrical performance testing equipment includes a testing component and a cooling component; the testing component includes an upper fixture and a lower fixture arranged opposite to the upper fixture; the test piece is arranged on the lower fixture, and the cooling component is embedded in the upper fixture; the test piece includes at least two thermistors to be tested; the lower fixture includes a detection area that is the same in number as the thermistors to be tested, and the detection area is used to place the thermistors to be tested; the cooling component embedded in the upper fixture is arranged opposite to each of the detection areas of the lower fixture; the test piece is a component product produced by continuous production processes of each battery component connection system before the electrical performance test; An electrical performance detection module is used to perform electrical performance detection on the device to be tested after the cooling component is running; the electrical performance detection includes a preliminary detection and a thermistor detection; the electrical performance detection module performs a preliminary detection on the device to be tested; while performing the preliminary detection, the cooling component continuously performs a temperature reduction treatment on the device to be tested; after the preliminary detection is completed, the thermistor detection is performed on the device to be tested; the thermistor detection is a detection item for performing electrical performance detection on the thermistors to be tested in the device to be tested; the detection accuracy of the detection items included in the preliminary detection will not be affected by changes in temperature.

11. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 5 to 9 are implemented.

12. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 5 to 9 are implemented.

13. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 5 to 9 are implemented.

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