Fusing test device and fusing test system

Abstract

The invention relates to a fusing test device and a fusing test system, fuses to be tested are placed on an insulation bearing assembly, the first end of each fuse to be tested is connected to the output end of a gating assembly, the input end of the gating assembly is connected with a test power supply, and the second end of each fuse to be tested is connected to the test power supply. Thus, the test loops where different fuses to be tested are located are gated through the gating assembly, so that the different fuses to be tested are connected to the test power supply, namely, the fusing test of the fuses to be tested can be realized according to the fusing electric signals output by the test power supply, and the voltage signals and the current signals of the fuses to be tested in the fusing process can be monitored. Through the scheme, the fusing test of a plurality of different fuses to be tested can be realized through one-time construction, and the voltage signal and / or the current signal of the fuses to be tested in the fusing process are / is monitored, so that the visual fusing test is realized, and the fusing test convenience is relatively high.

Description

Technical Field

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

[0002] With the rapid development of science and technology, secondary batteries represented by lithium batteries are becoming more and more widely used. They can not only be used as power batteries to provide power for electric vehicles, but also as energy storage batteries in energy storage scenarios. Batteries generally collect parameters such as cell temperature and voltage through sampling system components FPC (Flexible Printed Circuit) or FPCA (Flexible Printed Circuit Assembly) to monitor the operating status of the battery. FPC or FPCA is equipped with a fuse to cut off the power supply when a fault occurs in the battery sampling system. Therefore, choosing a suitable fuse is of great significance to the safe operation of a battery sampling system.

[0003] Currently, fuse selection is generally performed through a blown fuse test, but in the related art, the test convenience of the blown fuse test is relatively poor. Summary of the invention

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

[0005] The present application provides a fuse testing device, including a battery sampling component, an insulating load-bearing component, a test power supply, a gating component and a fuse monitoring component, wherein the battery sampling component includes a plurality of fuses to be tested, and the insulating load-bearing component is used to place the battery sampling component; the test power supply is used to apply a fuse electrical signal to the fuse to be tested; the input end of the gating component is connected to the test power supply, the first end of each of the fuses to be tested is respectively connected to the output end of the gating component, and the second end of each of the fuses to be tested is respectively connected to the test power supply; the gating component is used to select the test circuit where any one of the fuses to be tested is located when a fuse test is required; the fuse monitoring component is connected to the test power supply, and the fuse monitoring component is used to monitor the voltage signal and / or current signal flowing through the fuse to be tested when the fuse electrical signal is applied to any one of the fuses to be tested.

[0006] The above scheme places a battery sampling component including multiple fuses to be tested in an insulating bearing component, and the first end of each fuse to be tested is connected to the output end of the gating component, the input end of the gating component is connected to the test power supply, and the second end of each fuse to be tested is connected to the test power supply. In this way, the test circuits where different fuses to be tested are located are selected by the gating component, so that different fuses to be tested are connected to the test power supply, and the fuse test of the fuse to be tested can be realized according to the fuse electrical signal output by the test power supply, and the voltage signal and current signal of the fuse to be tested during the fusing process can be monitored. Through this scheme, the fusing test of multiple different fuses to be tested in the battery sampling component can be realized in one construction, and the voltage signal and / or current signal of the fuse to be tested during the fusing process can be monitored, so as to realize the visualized fusing test, which has high convenience for fusing test.

[0007] In some embodiments, the fuse testing device further includes a control component, and the control end of the gating component and the test power supply are respectively connected to the control component.

[0008] The above scheme connects the gating component and the test power supply to the control component, and controls the start and stop of the test power supply and the gating function of the gating component through the control component. The entire fuse test process can be carried out automatically with extremely high test efficiency.

[0009] In some embodiments, the control component includes a controller, and the control end of the gating component and the test power supply are respectively connected to the controller.

[0010] The above solution uses an independent controller to realize the operation control of the selection component and the test power supply, which can reduce the volume of the control component and further reduce the space occupancy rate of the fuse test device.

[0011] In some embodiments, the control component includes a human-machine interface and a controller that are communicatively connected, and the control end of the gating component and the test power supply are respectively connected to the controller.

[0012] The above scheme adopts a human-machine interface and a controller to build a control component. The human-machine interface can realize the interaction between the user and the fuse test device, which is convenient for modifying the test related parameters and further improving the convenience of the fuse test.

[0013] In some embodiments, the selection component includes more than two switching devices, the first end of each switching device is respectively connected to the test power supply, the second end of each switching device is respectively connected to the first end of a fuse to be tested, and the third end of the switching device is connected to the control component.

[0014] In the above scheme, each fuse to be tested is connected to a controllable switch device respectively, so as to control the conduction of different switch devices to realize the gating access of the fuse to be tested, and has high gating operation reliability.

[0015] In some embodiments, the insulating bearing assembly includes an insulating flame-retardant substrate, and the fuse to be tested is placed on the insulating flame-retardant substrate.

[0016] The above scheme uses an insulating flame-retardant substrate as an insulating bearing component, which can not only alleviate the influence of the fuse under test in the test state on other fuses under test during the fuse under test blowing test, but also reduce the possibility of fire during the blowing process.

[0017] In some embodiments, the insulating bearing assembly further includes an insulating flame-retardant bracket, the insulating flame-retardant bracket is disposed on the insulating flame-retardant substrate, and the fuse to be tested is placed on the insulating flame-retardant bracket.

[0018] In the above scheme, an insulating flame retardant bracket is arranged on the insulating flame retardant substrate, and the fuse to be tested is placed on the insulating flame retardant bracket. When implementing the insulating and flame retardant fuse test, the heat dissipation function can also be realized to reduce the influence of temperature on the next fuse test and improve the operating reliability of the fuse test device.

[0019] In some embodiments, the fuse testing device further comprises a fire extinguisher connected to the control assembly, and the fire extinguisher is used to spray a fire extinguishing agent toward the fuse position.

[0020] In the above scheme, a fire extinguisher is further arranged at the insulating bearing assembly, and after the fuse to be tested is completely blown, a fire extinguishing agent is sprayed toward the blown position, thereby further reducing the possibility of fire caused by the blown fuse and improving the operating safety of the fuse test device.

[0021] In some embodiments, the blown fuse monitoring component includes a voltage and current analyzer connected to the test power supply.

[0022] The above solution uses a voltage and current analyzer as a fusing monitoring component, thereby realizing the monitoring of the voltage signal and / or current signal of the fuse to be tested during the fusing process, and has high monitoring reliability.

[0023] In some embodiments, the blown fuse monitoring component further includes a video collector connected to the control component, and the video collector is used to collect blown fuse video data of the fuse to be tested.

[0024] The above scheme can also collect video data of the fusing process of the fuse to be tested through the video collector, and control the video collector through the control component to monitor the fusing process, thereby improving the safety of video collection.

[0025] In some embodiments, the fuse testing device further includes a voltage waveform monitor, which is connected to the test power supply and is used to monitor the voltage waveform of the fuse electrical signal output by the test power supply.

[0026] The above scheme is further provided with a voltage waveform monitor to monitor the voltage waveform output by the test power supply. When the test power supply is operating abnormally, it can be discovered and repaired in time, so that the fuse test device can be carried out when the test power supply is normal, thereby improving the accuracy of the fuse test.

[0027] In some embodiments, the battery sampling member includes a flexible circuit board assembly.

[0028] The above scheme uses a flexible circuit board assembly as a battery sampling component to realize the collection of relevant status parameters during the battery operation process. It has the advantages of good high temperature tolerance, light weight, and high space utilization.

[0029] In some embodiments, the battery sampling device includes more than ten fuses to be tested.

[0030] In the above scheme, more than ten fuses to be tested are set in the battery sampling device, and fuses can be set for each sampling channel respectively. Even if a single fuse blows, it will not affect the operation of other sampling channels, which can effectively improve the operation reliability of the battery system.

[0031] The present application also provides a fuse testing system, comprising an insulating bearing component, a test power supply, a gating component and a fuse monitoring component, wherein the insulating bearing component is used to place a device to be tested, the device to be tested comprises a plurality of fuses to be tested, the input end of the gating component is connected to the test power supply, the first end of each of the fuses to be tested is respectively connected to the output end of the gating component, the second end of each of the fuses to be tested is respectively connected to the test power supply, and the fuse monitoring component is connected to the test power supply; the test power supply is used to apply a fusing electrical signal to the fuse to be tested; the gating component is used to gating a test circuit where any one of the fuses to be tested is located when a fusing test is required; the fuse monitoring component is used to monitor a voltage signal and / or a current signal flowing through the fuse to be tested when the fusing electrical signal is applied to any one of the fuses to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0033] FIG1 is a schematic diagram of the structure of a fuse testing device in some embodiments of the present application;

[0034] FIG2 is a schematic diagram of the structure of a fuse testing device in other embodiments of the present application;

[0035] FIG3 is a schematic diagram of the structure of a control component in some embodiments of the present application;

[0036] FIG4 is a schematic diagram of the structure of a fuse testing device in some other embodiments of the present application;

[0037] FIG5 is a schematic diagram of the structure of an insulating load-bearing assembly in some embodiments of the present application;

[0038] FIG6 is a schematic diagram of the structure of an insulating bearing assembly in some other embodiments of the present application;

[0039] FIG7 is a schematic diagram of the structure of a fuse testing device in some other embodiments of the present application;

[0040] FIG8 is a schematic diagram of the structure of a fuse testing device in some other embodiments of the present application;

[0041] FIG9 is a schematic diagram of the structure of a fuse testing device in some other embodiments of the present application;

[0042] FIG. 10 is a schematic diagram of the structure of a fuse testing system in some embodiments of the present application.

[0043] Description of reference numerals:

[0044] 10-insulating load-bearing assembly, 20-selecting assembly, 30-test power supply, 40-fuse monitoring assembly, 100-battery sampling component, 50-control assembly, 51-human-machine interface, 52-controller, Q-switching device, 11-insulating flame retardant substrate, 12-insulating flame retardant bracket, 60-fire extinguisher, 41-voltage and current analyzer, 70-voltage waveform monitor. DETAILED DESCRIPTION

[0045] The following embodiments of the technical solution of the present application will be 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.

[0046] 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.

[0047] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0048] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0049] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0050] 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).

[0051] 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.

[0052] At present, judging from the development of the market situation, the application of batteries is becoming more and more extensive. They are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of battery application fields, the market demand is also constantly expanding.

[0053] The sampling system components can monitor the temperature, voltage, current and other parameters during the operation of the battery, which is of great significance to improving the safety and reliability of the battery. The sampling system components are usually built with flexible circuit board components such as FPC or FPCA. The quality of the copper etching and other types of fuses (fuse wires) of the flexible circuit board components is an important factor in maintaining battery safety. When the sampling system is grounded, short-circuited and overloaded, the fuse can be blown to cut off the power supply, thereby maintaining the safe operation of the sampling system.

[0054] In order to improve the quality of fuses in flexible circuit board assemblies, it is necessary to test the fuses and select suitable fuses to connect to the flexible circuit board assemblies so that the fuses can blow when the fuse current is reached and can operate stably when the fuse current is not reached. At present, the fuse is generally fixed by two alligator clips of the fuse blow tester, and a certain electrical signal is applied to the fuse for a blow test.

[0055] Through research, it was found that due to the structural limitations of the fuse tester, only one fuse can be connected at a time, while the flexible circuit board assembly usually includes more than a dozen or even dozens of fuses, and each test needs to be reconnected. In addition, the actual operating status of the fuse is not clear during the entire fuse test process at this stage. The user only needs to observe whether the fuse has blown, which has the disadvantage of poor convenience of fuse testing.

[0056] Based on the above situation, the present application provides a fuse testing device, in which a battery sampling component including a plurality of fuses to be tested is placed in an insulating bearing component, and the first end of each fuse to be tested is connected to the output end of the gating component, the input end of the gating component is connected to the test power supply, and the second end of each fuse to be tested is connected to the test power supply. In this way, by gating the test circuits where different fuses to be tested are located through the gating component, different fuses to be tested are connected to the test power supply, and the fuse test of the fuse to be tested can be realized according to the fuse electrical signal output by the test power supply, and the voltage signal and current signal of the fuse to be tested during the fusing process can be monitored.

[0057] Through this solution, the fuse testing of multiple different fuses to be tested in the battery sampling device can be realized in one construction, and the voltage signal and / or current signal of the fuse to be tested during the fusing process can be monitored to realize visual fuse testing, which has high convenience for fuse testing.

[0058] The fuse test device provided in this application is applied to any scenario where there is a need for fuse selection, without specific limitation. For ease of understanding, the following embodiments can be understood as the fuse test device used in the battery sampling system, the fuse selection of the battery sampling component, through the fuse test, to confirm whether the currently used fuse meets the fuse protection requirements of the sampling system.

[0059] Please refer to Figure 1. The present application provides a fuse testing device, including a battery sampling component 100, an insulating load-bearing component 10, a test power supply 30, a gating component 20 and a fuse monitoring component 40. The battery sampling component 100 includes a plurality of fuses to be tested. The insulating load-bearing component 10 is used to place the battery sampling component 100; the test power supply 30 is used to apply a fuse electrical signal to the fuse to be tested; the input end of the gating component 20 is connected to the test power supply 30, the first end of each fuse to be tested is respectively connected to the output end of the gating component 20 (one fuse to be tested is connected to one output end), and the second end of each fuse to be tested is respectively connected to the test power supply 30; the gating component 20 is used to select the test circuit where any fuse to be tested is located when there is a need for a fuse test; the fuse monitoring component 40 is connected to the test power supply 30, and the fuse monitoring component 40 is used to monitor the voltage signal and / or current signal flowing through the fuse to be tested when a fuse electrical signal is applied to any fuse to be tested.

[0060] Specifically, the battery sampling component 100 is a component used to collect the operating state parameters of the battery, such as voltage, current, and temperature. The insulating bearing component 10 is a device or equipment constructed of insulating materials and used to place the fuse to be tested. In this way, multiple fuses to be tested are placed in the insulating bearing component 10. When a fuse-breaking signal is applied to any fuse to be tested, the electrical signal will not be transmitted to other fuses to be tested. The test power supply 30 is a power supply that can apply a fuse-breaking signal of corresponding voltage or current to the fuse to be tested. The selection component 20 is a device that can select any branch according to actual needs, so that the fuse to be tested corresponding to the branch is connected to the test power supply 30 to form a test loop. The fuse monitoring device is a device that monitors the operating state of the fuse to be tested during the fuse-breaking test of any fuse to be tested.

[0061] The fusing electrical signal is an electrical signal used to cause the fuse to be tested to be blown, and it can be an electrical signal with a fixed voltage and current, or an electrical signal with a variable voltage and current, and there is no specific limitation. In one embodiment, for the same type of fuse to be tested, the test power supply 30 can apply an electrical signal with a fixed voltage and current to it, for example, a fixed fusing electrical signal of 8V (volts) and 5A (amperes).

[0062] In another embodiment, in order to alleviate the instantaneous impact of the electrical signal, a gradually increasing fusing electrical signal may be applied to the fuse to be tested. When the voltage and current of the fusing electrical signal reach the values ​​required for fusing (e.g., 8V, 5A), the voltage and current of the fusing electrical signal are maintained unchanged for fusing test. In more detail, in one embodiment, the fusing electrical signal may gradually increase from zero (0V, 0A), or may gradually increase from an initial value greater than zero, without specific limitation.

[0063] In one embodiment, considering that it takes a certain amount of time for the fuse to be tested to be blown, the test power supply 30 can also stop applying the blown electrical signal after applying the blown electrical signal for a set time to the fuse to be tested. The type of the test power supply 30 is not unique. In one embodiment, a constant current stabilized voltage source can be used as the test power supply 30. In another embodiment, a constant voltage source can also be used as the test power supply 30. The selection can be made based on actual needs.

[0064] The type of the selection component 20 is not unique. It can be implemented by a multiplexer, or by configuring a controllable switch device for each fuse to be tested. There is no specific limitation. As long as different fuses to be tested can be connected in sequence according to the test requirements, the fuse blowing test of the fuses to be tested can be performed one by one.

[0065] Therefore, in the actual test process, it is only necessary to place the fuse to be tested on the insulating load-bearing component 10 (that is, to place the battery sampling component 100 on the insulating load-bearing component 10), and connect the two ends of each fuse to be tested to the output end of the selection component 20 and the test power supply 30, respectively, to form a plurality of parallel test branches. After that, it is only necessary to select the branch where one of the fuses to be tested is located by the selection component 20 to form a test loop, so that the fuse to be tested is connected to the test power supply 30, and a fuse signal is applied to the fuse to be tested through the test power supply 30, and the voltage signal and / or current signal flowing through the fuse to be tested is monitored by the fuse monitoring component 40, so as to realize a fuse test of the fuse to be tested. By selecting each fuse to be tested in turn by the selection component 20, the fuse test of all fuses to be tested can be completed in the same way.

[0066] It can be understood that in the actual test scenario, the fuse fusing condition can be configured according to the actual use requirements. For example, in one embodiment, the fuse is required to be blown after the fuse fusing signal with a voltage of 8V and a current of 5A acts for 1.5 seconds. Then, during the test process, select a variety of different types of fuses to be tested, connect them to different test branches respectively, and then select each test branch in turn, apply a fuse fusing signal with a voltage of 8V and a current of 5A for 1.5 seconds to each fuse to be tested, and monitor the voltage and current signals flowing through each fuse to be tested during this process. After that, compare the voltage and current signals to obtain the fusing conditions of each fuse to be tested under the configured fusing conditions. If fusing occurs, the current signal and the voltage signal will jump to 0 at the fusing time point; if fusing does not occur, the voltage signal and the current signal will maintain a continuous curve within 1.5 seconds. Finally, select the fuse to be tested that has a fusing time closest to 1.5 seconds as the required fuse.

[0067] In the above scheme, a battery sampling component 100 including a plurality of fuses to be tested is placed in an insulating bearing component 10, and the first end of each fuse to be tested is connected to the output end of the selection component 20, the input end of the selection component 20 is connected to the test power supply 30, and the second end of each fuse to be tested is respectively connected to the test power supply 30. In this way, the test circuits where different fuses to be tested are located are selected by the selection component 20, so that different fuses to be tested are connected to the test power supply 30, and the fuse to be tested can be tested according to the fuse electrical signal output by the test power supply 30, and the voltage signal and current signal of the fuse to be tested during the fusing process can be monitored. Through this scheme, the fusing test of multiple different fuses to be tested in the battery sampling component 100 can be realized in one construction, and the voltage signal and / or current signal of the fuse to be tested during the fusing process can be monitored, so as to realize a visualized fusing test, and have a high convenience of fusing test.

[0068] It should be noted that the fuse test device provided in the present application can perform a fuse test operation manually according to the user. Specifically, the test power supply 30 has a fuse electrical signal configuration function, and the user can configure different fuse electrical signals according to the test requirements, including but not limited to the voltage value, current value and test duration of the fuse electrical signal. When there is a test requirement, the user manually turns on the test power supply 30 and configures the required fuse electrical signal, controls the selection component 20 to select the fuse to be tested, and turns on the fuse monitoring component 40, so as to realize the fuse test of the fuse to be tested.

[0069] In another embodiment, the fusing operation of the fuse testing device of the present application can also be automatically executed by a program, please refer to Figure 2, the fuse testing device also includes a control component 50, the control end of the selection component 20 and the test power supply 30 are respectively connected to the control component 50.

[0070] Specifically, the control component 50 is a device that can store programs related to control logic and execute related programs when there is a control requirement. In the solution of this embodiment, the control component 50 stores the fusing electrical signal required for the fusing test and the related programs for executing the fusing operation. When there is a test requirement, the control component 50 controls the gating device in sequence according to the program to gating each fuse to be tested to the test power supply 30, controls the test power supply 30 to apply the fusing electrical signal matching the fuse to be tested, and turns on the fuse monitoring component 40 to implement the fusing test.

[0071] In the above scheme, the gating component 20 and the test power supply 30 are connected to the control component 50, and the start and stop of the test power supply 30 and the gating function of the gating component 20 are controlled by the control component 50. The entire fuse test process can be carried out automatically with extremely high test efficiency.

[0072] It should be noted that the type of control component 50 is not unique. In some embodiments, the control component 50 includes a controller, and the control end of the gating component 20 and the test power supply 30 are respectively connected to the controller.

[0073] Specifically, in the solution of this embodiment, the control component 50 includes a controller. Before the fuse test begins, a fuse control program corresponding to the fuse to be tested is written into the controller. Subsequently, the controller only needs to implement the test of the fuse to be tested according to the written program.

[0074] It is understandable that the type of controller is not unique. In one embodiment, it can be a PLC (Programmable Logic Controller), an MCU (Micro Control Unit) or a CPU (Central Process Unit), etc., without specific limitation.

[0075] The above solution uses an independent controller to realize the operation control of the selection component 20 and the test power supply 30, which can reduce the volume of the control component 50 and further reduce the space occupancy rate of the fuse test device.

[0076] Please refer to FIG. 3 . In some embodiments, the control component 50 includes a human-machine interface 51 and a controller 52 that are communicatively connected. The control end of the gating component 20 and the test power supply 30 are respectively connected to the controller 52 (the connection relationship diagram is not shown).

[0077] Specifically, the human-machine interface 51 is a device that can realize human-machine interaction. In the solution of this embodiment, the control component 50 includes a human-machine interface 51 and a controller 52. Through the human-machine interface 51, the user can modify the relevant program of the fuse test stored in the controller 52, for example, change the voltage and current of the required fuse test signal, or change the continuous application time required for the fuse test signal, etc., without specific limitation. In this way, when performing fuse tests on different fuses to be tested, the fuse electrical signal can be adaptively configured to improve the application range of the fuse test device.

[0078] It should be noted that the type of human-machine interface 51 is not unique, and any interactive device that can receive instructions sent by the user and forward the instructions to the controller 52 to modify the relevant program in the controller 52 can be used. For example, in one embodiment, the human-machine interface 51 can be a mechanical button type interface; in another embodiment, the human-machine interface 51 can also be a touch screen type device, such as a capacitive touch interactive screen or a resistive touch interactive screen, without specific limitation.

[0079] The above scheme adopts a human-machine interface 51 and a controller 52 to construct a control component 50. The human-machine interface 51 can realize the interaction between the user and the fuse test device, which is convenient for modifying the test related parameters and further improving the convenience of the fuse test.

[0080] Please refer to Figure 4. In some embodiments, the selection component 20 includes more than two switching devices Q, the first end of each switching device Q is connected to the test power supply 30, the second end of each switching device Q is connected to the first end of a fuse to be tested, and the third end of the switching device Q is connected to the control component 50 (the connection relationship diagram is not shown).

[0081] Specifically, this embodiment takes the mode that the gating component 20 configures a controllable switch device Q for each fuse to be tested as an example, which includes multiple test branches, each of which includes a switch device Q and a fuse to be tested connected in series, and each of which is connected to both ends of the test power supply 30, that is, the positive and negative electrodes of the test power supply 30. In this way, the control component 50 can send a control signal to the third end of the switch device Q of any branch, so that the first end and the second end of the switch device Q are connected, that is, the switch device Q is turned on, and then a fuse signal of a corresponding magnitude is applied to the branch through the test power supply 30, thereby realizing the fuse test of the fuse to be tested in the branch.

[0082] It should be noted that the type of the switch device Q is not limited, and any device that can realize the switch switching function under the control signal of the control component 50 can be used. For example, in one embodiment, a relay can be used as the switch device Q, and in another embodiment, a field effect tube or a transistor can be used to form the switch device Q, and there is no specific limitation.

[0083] In the above scheme, each fuse to be tested is respectively connected to a controllable switch device Q, so as to control the conduction of different switch devices Q to realize the gating access of the fuse to be tested, and has high gating operation reliability.

[0084] Please refer to FIG. 5 . In some embodiments, the insulating load-bearing assembly 10 includes an insulating flame-retardant substrate 11 , and the fuse to be tested is placed in the insulating flame-retardant substrate 11 .

[0085] Specifically, the insulating flame-retardant substrate 11 is a substrate made of insulating and flame-retardant materials. In the solution of this embodiment, the insulating bearing assembly 10 has insulating and flame-retardant functions, which can not only prevent the fuse signal from being transmitted to other fuses during the fuse test, but also reduce the possibility of fire caused by the fuse blowing.

[0086] It should be noted that the type of the insulating flame retardant substrate 11 is not unique. In one embodiment, the insulating flame retardant substrate 11 can be made of glass, ceramic, or flame retardant polyvinyl chloride, etc., without specific limitation. The shape of the insulating flame retardant substrate 11 is not unique. It can be a regular structure such as a cuboid, a cylinder, or other irregular structures, as long as it can stably carry multiple fuses to be tested. For example, in one embodiment, the insulating flame retardant substrate 11 can be set to a hollow cuboid shape with one end open, that is, similar to a box, and the fuse to be tested can be placed inside the insulating flame retardant substrate 11.

[0087] The above scheme uses the insulating flame-retardant substrate 11 as the insulating bearing assembly 10, which can not only alleviate the influence of the fuse under test in the test state on other fuses under test during the fuse under test blowing test, but also reduce the possibility of fire during the blowing process.

[0088] Please refer to FIG. 6 . In some embodiments, the insulating load-bearing assembly 10 further includes an insulating flame-retardant bracket 12 . The insulating flame-retardant bracket 12 is disposed on the insulating flame-retardant substrate 11 . The fuse to be tested is placed on the insulating flame-retardant bracket 12 .

[0089] Specifically, the insulating flame-retardant bracket 12 is a bracket made of insulating and flame-retardant materials. By setting the insulating flame-retardant bracket 12, the fuse to be tested is placed on the insulating flame-retardant bracket 12, increasing the contact surface between the fuse to be tested and the air, thereby improving the heat dissipation capacity. The type of the insulating flame-retardant bracket 12 is not unique, and the same material as the insulating flame-retardant substrate 11 can be used, or a different material from the insulating flame-retardant substrate 11 can be used, and there is no specific limitation.

[0090] It should be noted that the structure of the insulating flame retardant bracket 12 is not unique, as long as it can carry the fuse to be tested and increase the contact area between the fuse to be tested and the air. For example, in one embodiment, taking the box-shaped insulating flame retardant substrate 11 as an example, the insulating flame retardant bracket 12 may include a plurality of insulating flame retardant rods, each of which is spaced across the opening surface of the insulating flame retardant substrate 11, or is spaced across the inside of the insulating flame retardant substrate 11 to form a suspended structure, thereby increasing the contact area between the fuse to be tested and the air and improving the heat dissipation performance.

[0091] In the above scheme, an insulating flame retardant bracket 12 is arranged on the insulating flame retardant substrate 11, and the fuse to be tested is placed on the insulating flame retardant bracket 12. When implementing the insulating and flame retardant fuse test, the heat dissipation function can also be realized to reduce the influence of temperature on the next fuse test and improve the operating reliability of the fuse test device.

[0092] Please refer to FIG. 7 . In some embodiments, the fuse testing device further includes a fire extinguisher 60 connected to the control assembly 50 . The fire extinguisher 60 is used to spray a fire extinguishing agent toward the fuse position.

[0093] Specifically, the fuse test device further includes a fire extinguisher 60, which is connected to the control component 50 and can spray a fire extinguishing agent to the fuse to be tested under the control signal of the control component 50. Specifically, the spray port of the fire extinguisher 60 can be correspondingly arranged above the fuse to be tested, or above the position where the insulation bearing component 10 is used to place the fuse to be tested, so as to accurately spray the fire extinguishing agent.

[0094] It should be noted that the type of fire extinguisher 60 is not unique. In one embodiment, it may be a dry powder fire extinguisher 60 . In another embodiment, an aerosol fire extinguisher 60 may also be used, and there is no specific limitation.

[0095] It can be understood that in one embodiment, each time after the blown test of a fuse to be tested is completed, the control component 50 can spray the fire extinguishing agent to the blown position by controlling the fire extinguisher 60. In another embodiment, after the blown tests of multiple fuses to be tested are completed, the control component 50 sprays the fire extinguishing agent to the blown position again, which is not specifically limited.

[0096] The method of the fire extinguisher 60 spraying the fire extinguishing agent toward the blown position is not unique. In one embodiment, for each blown test, only the fuse to be tested that is currently required to be tested is placed on the insulating support assembly 10. After the test of the fuse to be tested is completed, there is no need to position it, and the fire extinguishing agent can be directly sprayed toward a fixed position (a piece can be pre-set for placing the fuse to be tested).

[0097] In another embodiment, a plurality of fuses to be tested may be placed on the insulating bearing assembly 10 at the same time. In this case, the fuse to be tested that is currently undergoing a blown fuse test may be located by infrared temperature detection or the like. By controlling the movement of the fire extinguisher 60, a small amount of fire extinguishing agent is sprayed toward the fuse to be tested when the test is completed. The fire extinguishing agent is sprayed toward the fuse to be tested alone to reduce the influence of the fire extinguishing agent on other fuses to be tested.

[0098] In the above scheme, a fire extinguisher 60 is further provided at the insulating bearing assembly 10. After the fuse to be tested is completely blown, a fire extinguishing agent is sprayed toward the blown position, thereby further reducing the possibility of fire caused by the blown fuse and improving the operating safety of the fuse test device.

[0099] Please refer to FIG. 8 . In some embodiments, the blown fuse monitoring component 40 includes a voltage and current analyzer 41 . The voltage and current analyzer 41 is connected to the test power supply 30 .

[0100] Specifically, the voltage and current analyzer 41 is an instrument that can analyze input voltage and / or current signals and monitor voltage and / or current changes, for example, generate voltage and / or current change curves.

[0101] It should be noted that, in order to realize the voltage and / or current monitoring of the fusing process, the voltage and current analyzer 41 should be equipped with a display screen, which can display and store the real-time voltage and / or current data in the form of numbers, graphs, tables, etc. For example, in one embodiment, the voltage and current analyzer 41 can be a terminal device with a display screen, such as an industrial computer or a personal computer, without specific limitation.

[0102] The above solution uses the voltage and current analyzer 41 as the fuse monitoring component 40, so as to monitor the voltage signal and / or current signal of the fuse to be tested during the fusing process, and has high monitoring reliability.

[0103] In some embodiments, the blown fuse monitoring component 40 further includes a video collector connected to the control component 50, and the video collector is used to collect blown fuse video data of the fuse to be tested.

[0104] Specifically, the video collector is a device or apparatus with a video monitoring and acquisition function. Through this solution, the start and stop of the video collector and the recording of the blown video data of the fuse to be tested are all realized through the control component 50, without the need for the user to approach the fuse to be tested, thereby improving the safety of the test. It can be understood that the type of video collector is not unique, and can be a high-speed camera, etc., which is not specifically limited.

[0105] It should be noted that, in one embodiment, the control component 50 may control the video collector to start running when the first fuse to be tested is subjected to a blown test, and then control the video collector to stop running when the last fuse to be tested is tested. In another embodiment, the start and stop control of the video collector may be performed independently for each test of the fuse to be tested, that is, whenever a test of a fuse to be tested is started, an instruction is sent to control the video collector to start running, and after the current fuse to be tested is tested, the video collector is controlled to stop running.

[0106] The above scheme can also collect video data of the fusing process of the fuse to be tested through the video collector, and control the video collector to monitor the fusing process through the control component 50, thereby improving the safety of video collection.

[0107] Please refer to FIG. 9 . In some embodiments, the fuse testing device further includes a voltage waveform monitor 70 . The voltage waveform monitor 70 is connected to the test power supply 30 . The voltage waveform monitor 70 is used to monitor the voltage waveform of the fuse electrical signal output by the test power supply 30 .

[0108] Specifically, the voltage waveform monitor 70 is an instrument capable of implementing real-time voltage monitoring of outputting a blown signal. During the blown test process, accurately applying a blown electrical signal to the fuse to be tested is of great significance to the accuracy of the blown test result of the fuse to be tested.

[0109] Specifically, if the fuse electrical signal is an electrical signal with a fixed voltage and current, then during the entire fuse test process, the voltage of the fuse electrical signal applied by the test power supply 30 should be maintained at a high level, and when the application time of the fuse electrical signal reaches the set time, the voltage of the fuse electrical signal should be converted to a low level.

[0110] The above scheme is further provided with a voltage waveform monitor 70 to monitor the voltage waveform output by the test power supply 30. When the test power supply 30 is operating abnormally, it can be discovered and repaired in time, so that the fuse test device can be performed when the test power supply 30 is normal, thereby improving the accuracy of the fuse test.

[0111] In some embodiments, the battery sampling device 100 includes a flexible circuit board assembly.

[0112] Specifically, the flexible circuit board assembly is a sampling component formed by using a flexible circuit board as a substrate and integrating various sampling devices and fuses. The type of the flexible circuit board assembly is not unique, and can be FPC or FPCA, which is not specifically limited.

[0113] The above solution uses a flexible circuit board assembly as the battery sampling component 100 to collect relevant state parameters during the operation of the battery, and has the advantages of good high temperature tolerance, light weight, and high space utilization.

[0114] The number of fuses to be tested in the battery sampling device 100 is not unique, and is specifically set in combination with the sampling channels configured in the actual scenario. For example, in some embodiments, the battery sampling device includes more than ten fuses to be tested.

[0115] In the above scheme, more than ten fuses to be tested are set in the battery sampling device 100, and fuses can be set for each sampling channel respectively. Even if a single fuse blows, it will not affect the operation of other sampling channels, which can effectively improve the operation reliability of the battery system.

[0116] In order to facilitate understanding of the technical solution of the present application, the present application is explained below in conjunction with specific embodiments.

[0117] There are multiple fuses to be tested in the battery sampling component 100, and the selection component 20 is implemented by configuring a controllable switch device Q for each fuse to be tested, and the controllable switch device Q is specifically a relay. In each test branch, one switch contact of the relay is connected to the test power supply 30, and the other switch contact is connected to the first end of the fuse to be tested. The second end of each fuse to be tested is connected to the test power supply 30, and the coil control end of the relay is connected to the control component 50. Under the action of the control component 50, the coil of the relay is energized or de-energized, thereby connecting or disconnecting the connection between the two contact switches. The insulating load-bearing component 10 includes a box-shaped insulating flame-retardant substrate 11, and a plurality of insulating flame-retardant rods spaced across the opening surface of the insulating flame-retardant substrate 11, and each fuse to be tested is placed on a hollow plane formed by the insulating flame-retardant rods. The control component 50 is also connected to the test power supply 30, a video collector and a fire extinguisher 60, and the test power supply 30 is also connected to a voltage and current analyzer 41 and a voltage waveform monitor 70.

[0118] The control component 50 includes a human-machine interface 51 and a controller 52. When a fuse test is required, the user can configure the required fuse conditions through the human-machine interface 51, that is, configure the voltage and current of the fuse electrical signal that the test power supply 30 needs to output, as well as the application time required for the fuse electrical signal during a single fuse test. After that, the controller 52 controls the relays of each fuse to be tested to be energized in turn according to the relevant program, and turns on the test branch so that the test power supply 30 applies a fuse electrical signal to the fuse to be tested. In addition, the voltage waveform, current waveform, and fuse video data of each fuse to be tested are collected after the fuse electrical signal is applied to each fuse to be tested, and the voltage waveform of the fuse electrical signal is monitored synchronously. Whenever the duration of the fuse to be tested reaches the application time, the controller 52 controls the fire extinguisher 60 to spray the fire extinguishing agent to the fuse position and starts the fuse test of the next fuse to be tested.

[0119] Please refer to Figure 10. The present application also provides a fuse testing system, including an insulating load-bearing component 10, a test power supply 30, a gating component 20 and a fuse monitoring component 40. The insulating load-bearing component 10 is used to place a device to be tested (not shown in the figure), and the device to be tested includes multiple fuses to be tested; the test power supply 30 is used to apply a fusing electrical signal to the fuses to be tested; the input end of the gating component 20 is connected to the test power supply 30, the first end of each fuse to be tested is respectively connected to the output end of the gating component 20, and the second end of each fuse to be tested is respectively connected to the test power supply 30; the gating component 20 is used to select the test circuit where any fuse to be tested is located when there is a need for a fuse test; the fuse monitoring component 40 is connected to the test power supply 30, and the fuse monitoring component 40 is used to monitor the voltage signal and / or current signal flowing through the fuse to be tested when a fusing electrical signal is applied to any fuse to be tested.

[0120] Specifically, the implementation of the insulation bearing component 10, the test power supply 30, the gating component 20 and the fuse monitoring component 40 in the fuse test system is as shown in the above embodiments, which will not be described in detail here. According to actual needs, the fuse test system may also include one or more of a control component, a fire extinguisher, a voltage and current analyzer, a video collector, and a voltage waveform monitor, and its specific implementation is also as shown in the above embodiments, which will not be described in detail here.

[0121] The fuse test system places a device under test including a plurality of fuses under test on an insulating bearing assembly 10, and the first end of each fuse under test is connected to the output end of a gating assembly 20, the input end of the gating assembly 20 is connected to a test power supply 30, and the second end of each fuse under test is connected to the test power supply 30. In this way, the test circuits where different fuses under test are located are selected by the gating assembly 20, so that different fuses under test are connected to the test power supply 30, and the fuse under test can be tested according to the fuse electrical signal output by the test power supply 30. The voltage signal and current signal of the fuse under test during the fusing process can be monitored. Through this scheme, the fuse test of multiple different fuses under test in the device under test can be realized by one construction, and the voltage signal and / or current signal of the fuse under test during the fusing process can be monitored, so as to realize a visualized fuse test, and have a high convenience of fuse test.

[0122] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A fuse testing device, characterized in that: include: A battery sampling device, including a plurality of fuses to be tested; An insulating bearing assembly, used for placing the battery sampling component; A test power supply, used for applying a fusing electrical signal to the fuse to be tested; A gating component, wherein the input end of the gating component is connected to the test power supply, the first end of each of the fuses to be tested is respectively connected to the output end of the gating component, and the second end of each of the fuses to be tested is respectively connected to the test power supply; the gating component is used to select the test circuit where any of the fuses to be tested is located when there is a need for a blown fuse test; A blown fuse monitoring component is connected to the test power supply, and is used for monitoring a voltage signal and / or a current signal flowing through the fuse to be tested when the blown fuse electrical signal is applied to any one of the fuses to be tested.

2. The fuse testing device according to claim 1, characterized in that: The fuse testing device further comprises a control component, and the control end of the gating component and the test power supply are respectively connected to the control component.

3. The fuse testing device according to claim 2, characterized in that: The control component comprises a controller, and the control end of the gating component and the test power supply are respectively connected to the controller.

4. The fuse testing device according to claim 2, characterized in that: The control component includes a human-machine interface and a controller which are communicatively connected, and the control end of the gating component and the test power supply are respectively connected to the controller.

5. The fuse testing device according to any one of claims 2 to 4, characterized in that: The gating component includes more than two switch devices, the first end of each switch device is respectively connected to the test power supply, the second end of each switch device is respectively connected to the first end of a fuse to be tested, and the third end of the switch device is connected to the control component.

6. The fuse testing device according to any one of claims 1 to 4, characterized in that: The insulating bearing assembly comprises an insulating flame-retardant substrate, and the fuse to be tested is placed on the insulating flame-retardant substrate.

7. The fuse testing device according to claim 6, characterized in that: The insulating bearing assembly further comprises an insulating flame-retardant bracket, which is arranged on the insulating flame-retardant substrate, and the fuse to be tested is placed on the insulating flame-retardant bracket.

8. The fuse testing device according to any one of claims 2 to 4, characterized in that: The fuse testing device also includes a fire extinguisher connected to the control assembly, and the fire extinguisher is used to spray a fire extinguishing agent toward the fuse position.

9. The fuse testing device according to any one of claims 2 to 4, characterized in that: The fuse monitoring component includes a voltage and current analyzer, and the voltage and current analyzer is connected to the test power supply.

10. The fuse testing device according to claim 9, characterized in that: The blown fuse monitoring component further comprises a video collector connected to the control component, and the video collector is used to collect blown fuse video data of the fuse to be tested.

11. The fuse testing device according to any one of claims 1 to 4, characterized in that: The fuse testing device further comprises a voltage waveform monitor, which is connected to the test power supply and is used to monitor the voltage waveform of the fuse electrical signal output by the test power supply.

12. The fuse testing device according to any one of claims 1 to 4, characterized in that: The battery sampling member includes a flexible circuit board assembly.

13. The fuse testing device according to any one of claims 1 to 4, characterized in that: The battery sampling device includes more than ten fuses to be tested.

14. A fuse testing system, characterized in that: It comprises an insulating bearing component, a test power supply, a gating component and a fuse monitoring component, wherein the insulating bearing component is used to place a device to be tested, the device to be tested comprises a plurality of fuses to be tested, the input end of the gating component is connected to the test power supply, the first end of each fuse to be tested is respectively connected to the output end of the gating component, the second end of each fuse to be tested is respectively connected to the test power supply, and the fuse monitoring component is connected to the test power supply; The test power supply is used to apply a blown electrical signal to the fuse to be tested; the gating component is used to gating the test circuit where any one of the fuses to be tested is located when there is a need for a blown fuse test; the blown fuse monitoring component is used to monitor the voltage signal and / or current signal flowing through the fuse to be tested when the blown electrical signal is applied to any one of the fuses to be tested.

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