Line testing device for energy storage container

Abstract

The utility model discloses a circuit testing device for an energy storage container, which comprises a shell, a printed circuit board arranged in the shell, a testing needle and a testing wire, one end of the testing needle is connected with a ground wire of the printed circuit board, the other end of the testing needle is contacted with a first testing point, and one end of the testing wire is connected with a testing input end of the printed circuit board. The printed circuit board is further provided with a VCC power source end ground connected with the positive electrode and the negative electrode of the battery, the positive electrode of the battery, a testing assembly electrically connected with the testing input end of the printed circuit board, a triode and a vibration motor, and the testing assembly, the triode and the vibration motor are electrically connected in sequence and form an electric power loop with a VCC power source. And the lighting assembly is connected in the power loop. Test lines with corresponding lengths are selected according to different test scenes, the pen type structure is more convenient to carry and use, and the vibration motor activates vibration to avoid the situation that the test result cannot be confirmed due to the fact that the sound of the buzzer cannot be heard in a noisy environment.

Description

Technical Field

[0001] This utility model relates to a circuit testing device for energy storage containers, belonging to the technical field of circuit continuity. Background Technology

[0002] In the installation, inspection, and routine maintenance of electrical circuits, the buzzer function of a standard digital multimeter, commonly used for quickly determining circuit continuity, suffers from several technical defects that urgently need improvement. First, the reliability of the buzzer's acoustic alert mechanism is significantly reduced in complex working environments. When operators are in environments with noise levels exceeding 75dB, such as workshops with machinery, transportation hubs, or construction sites, the approximately 60dB volume of a conventional buzzer is easily masked by ambient noise, forcing testers to repeatedly observe the display or get very close to the multimeter to confirm the test results. This failure in auditory feedback not only reduces testing efficiency but also, in scenarios with stringent timeliness requirements, such as high-voltage power distribution systems, is more likely to cause safety hazards due to response delays. Simultaneously, the acoustic signal cannot form an effective warning record, hindering information synchronization during collaborative work among multiple personnel.

[0003] Secondly, the visibility limitations of traditional buzzer-mode multimeters in low-light environments severely restrict operational accuracy. When testing in dimly lit locations such as construction sites at night, enclosed equipment rooms, or underground pipeline wells, operators must simultaneously hold both probes to accurately locate the test points and observe the multimeter's display. This distraction easily leads to probe mis-touching or poor contact. Especially when testing densely packed terminals or microelectronic components, the physical size of conventional probes and the low contrast of the monochrome LCD screen force operators to frequently adjust their posture to obtain the optimal observation angle. Long-term accumulation of this unnatural operating posture can easily lead to occupational muscle strain. Furthermore, in special environments with metallic reflections or electromagnetic interference, relying solely on visual judgment can easily result in misreading.

[0004] Furthermore, the physical limitation of standard probe length severely impacts the continuity of testing operations. Taking international standard shipping containers as an example, their internal length typically reaches 12 meters and includes multiple layers of cable trays. When testing the continuity of diagonal positions or upper and lower layers, the original 1.2-meter probe length often forces operators to adopt alternative measures such as segmented testing, temporary wiring, or moving the testing equipment. This operating mode not only significantly increases the time cost of a single test but may also introduce measurement errors due to the contact impedance of temporary contacts. In large industrial facilities such as automated warehouses and wind turbine nacelles, insufficient probe length also necessitates frequent climbing and movement by testing personnel, posing risks of working at height and making it difficult to ensure synchronization between test points. Summary of the Invention

[0005] Purpose of the invention: To solve the above-mentioned technical problems, this utility model provides a line testing device for energy storage containers. The device adopts a pen-type structure for continuity testing, selects test lines of corresponding length according to the test distance, and is equipped with lighting components and a vibration motor to confirm the test results under different environments.

[0006] Technical solution: A circuit testing device for an energy storage container includes a housing, a printed circuit board (PCB) disposed inside the housing, test probes, and test leads. One end of the test probe is connected to the ground wire of the PCB, and the other end contacts a first test point. One end of the test lead is connected to the test input terminal of the PCB, and the other end contacts a second test point. The PCB is also provided with a VCC power supply ground terminal connected to the positive and negative terminals of the battery, a test component electrically connected to the test input terminal of the PCB, a transistor, and a vibration motor. The test component, transistor, and vibration motor are electrically connected in sequence and form a power circuit with the VCC power supply. The device also includes a lighting component connected in the power circuit.

[0007] This invention improves the structure of the multimeter to a pen-type structure, allowing for the selection of test leads of appropriate length according to different testing scenarios. This eliminates the need for multiple tests in segments due to short test leads, improving efficiency and testing accuracy. Furthermore, the pen-type structure is more convenient to carry and use. When a connection is successful, its vibration motor activates, preventing the buzzer from being inaudible in noisy environments and thus ensuring confirmation of test results. Additionally, an illumination component is included to adapt to low-light environments, enabling faster and more accurate location of test points, further enhancing operational accuracy and efficiency.

[0008] In a preferred embodiment, to achieve continuity testing, the test component includes a voltage regulator module, a constant current module, and a voltage comparator. The voltage regulator module and the constant current module are respectively connected to the positive input terminal and the negative input terminal of the voltage comparator. The VCC terminal of the voltage comparator is connected to the VCC power supply voltage, and the ground terminal is connected to the ground wire of the printed circuit board. The output terminal of the voltage comparator is electrically connected to the transistor, and the constant current module is electrically connected to the test input terminal of the printed circuit board.

[0009] The voltage value of the voltage regulator module is set, and the voltage comparator obtains the standard voltage value set by the voltage regulator module and the actual voltage measured from the test leads and test probe circuits, respectively. The two are compared. If the standard voltage is less than the actual voltage, the output of the voltage comparator outputs a low level, the transistor is turned on, and the vibration motor is started, thus realizing the continuity test.

[0010] In a preferred embodiment, for setting a standard voltage, the voltage regulator module includes a first voltage regulator, a first variable resistor, and a second variable resistor disposed in the standard voltage power circuit. The input terminal of the first voltage regulator is connected to the VCC power supply voltage, and the ground terminal is connected to the printed circuit board ground wire. The output terminal of the first voltage regulator is connected in series with the first variable resistor and the second variable resistor. The positive input terminal of the voltage comparator is connected to the circuit between the first variable resistor and the second variable resistor.

[0011] By connecting a first variable resistor and a second variable resistor in series in a standard voltage power circuit, a standard voltage is obtained through series voltage division. Different resistance values ​​can be changed to alter the standard voltage value as needed, making this testing device applicable to continuity testing with different resistance values ​​and improving its versatility.

[0012] In a preferred embodiment, to acquire the actual voltage, the constant current module includes a second voltage regulator, a first resistor, and a second resistor disposed in the actual voltage power circuit. The input terminal of the second voltage regulator is connected to the VCC power supply voltage, and the ground terminal is connected to the ground wire of the printed circuit board. The first resistor and the second resistor are connected in parallel between the output terminal of the second voltage regulator and the test input terminal of the printed circuit board. The negative input terminal of the voltage comparator is connected to the test input terminal of the printed circuit board.

[0013] When the test probe and test lead are in contact with the first test point and the second test point respectively to start the continuity test, the VCC power supply voltage passes through the second regulator, the first resistor, and the second resistor in sequence to the ground line of the printed circuit board, and the voltage comparator collects the measured actual voltage value.

[0014] In a preferred embodiment, to achieve illumination in low-light environments, the lighting assembly includes a lamp and a switch, one end of the lamp being electrically connected to the switch and the other end being connected to the ground wire of a printed circuit board, and the other end of the switch being electrically connected to the positive terminal of a battery.

[0015] When needed, the lights can be turned on and off using the lighting switch to provide illumination. When no lighting is required, the lights can be turned off using the lighting switch to avoid increasing energy consumption.

[0016] In a preferred embodiment, to save energy, a power switch is also included in the power circuit, one end of which is connected to the positive terminal of the battery and the other end is connected to the VCC power supply.

[0017] When a continuity test is required, turn on the power switch to supply power. When a continuity test is not required, turn off the power switch to reduce battery power consumption.

[0018] In a preferred embodiment, to enable timely confirmation of test results, a buzzer and an indicator light are also included, each connected in parallel with the vibration motor. The vibration motor, buzzer, and indicator light are all connected between the VCC power supply and the ground level.

[0019] By retaining the original buzzer and indicator lights and enriching the forms of test result feedback, test results can be confirmed more quickly.

[0020] In a preferred embodiment, to filter out high-frequency and low-frequency noise in the standard voltage power circuit and improve test accuracy, a first capacitor and a second capacitor for filtering out high-frequency and low-frequency noise are connected in parallel between the VCC power supply voltage and the printed circuit board ground in the standard voltage power circuit; a third capacitor and a fourth capacitor for filtering out high-frequency and low-frequency noise are connected in parallel between the output terminal of the first voltage regulator and the printed circuit board ground; and a fifth capacitor for filtering out high-frequency noise is also included in parallel with the second variable resistor.

[0021] In a preferred embodiment, in order to filter out high-frequency and low-frequency noise in the actual voltage power circuit and improve test accuracy, a sixth capacitor and a seventh capacitor are connected in parallel between the VCC power supply voltage and the printed circuit board ground line in the actual voltage power circuit for filtering out high-frequency and low-frequency noise, and an eighth capacitor and a ninth capacitor are connected in parallel between the output terminal of the combined current of the first resistor and the second resistor and the printed circuit board ground line for filtering out high-frequency and low-frequency noise.

[0022] In a preferred embodiment, to filter out high-frequency and low-frequency noise at the voltage comparator and improve test accuracy, a tenth capacitor for filtering high-frequency noise is connected in parallel between the output terminal of the voltage comparator and the ground line of the printed circuit board, and an eleventh capacitor for filtering high-frequency noise is connected in parallel between the VCC terminal of the voltage comparator and the ground line of the printed circuit board.

[0023] Beneficial effects: This utility model can select the corresponding length of test line according to different test scenarios, eliminating the need for multiple tests in segments due to short test lines, thus improving efficiency and test accuracy. At the same time, the pen-style structure is more convenient to carry and use. When the connection is successful, its vibration motor will activate vibration to avoid the inability to hear the buzzer in noisy environments, which would lead to the inability to confirm the test results. Furthermore, an illumination component is set to adapt to low-light environments, enabling faster and more accurate location of test points, thus improving operational accuracy and efficiency. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0025] Figure 1 This is a structural diagram of the present utility model;

[0026] Figure 2 This is a schematic diagram of the power circuit on the printed circuit board of this utility model. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] like Figures 1-2As shown, a circuit testing device for an energy storage container includes a housing 1, a printed circuit board 2 disposed inside the housing 1, a test probe 3, and a test wire 4. One end of the test probe 3 is connected to the ground wire of the printed circuit board 2, and the other end is in contact with a first test point 5. One end of the test wire 4 is connected to the test input terminal 21 of the printed circuit board, and the other end is in contact with a second test point 6. The printed circuit board 2 is also provided with a VCC power supply ground terminal 71 and a battery positive terminal 72 connected to the positive and negative terminals of a battery 7, a test component 8, a transistor 9, and a vibration motor 10 electrically connected to the test input terminal 21 of the printed circuit board. The test component 8, the transistor 9, and the vibration motor 10 are electrically connected in sequence and form a power circuit with the VCC power supply. The device also includes a lighting component 11 connected in the power circuit.

[0031] The multimeter's structure has been improved to a pen-type structure, allowing for the selection of test leads 4 of appropriate lengths according to different testing scenarios. This eliminates the need for multiple tests in segments due to short test leads 4, improving efficiency and testing accuracy. Furthermore, the pen-type structure is more convenient to carry and use. When a connection is successfully established, its vibration motor 10 will activate to prevent the buzzer 13 from being inaudible in noisy environments, thus ensuring confirmation of test results. Additionally, an illumination component 11 is included to adapt to low-light environments, enabling faster and more accurate location of test points, further enhancing operational accuracy and efficiency.

[0032] To perform continuity testing, the test component 8 includes a voltage regulator module 81, a constant current module 82, and a voltage comparator 83. The voltage regulator module 81 and the constant current module 82 are connected to the positive and negative input terminals of the voltage comparator 83, respectively. The VCC terminal of the voltage comparator 83 is connected to the VCC power supply voltage, and the ground terminal is connected to the ground wire of the printed circuit board 2. The output terminal of the voltage comparator 83 is electrically connected to the transistor 9, and the constant current module 82 is electrically connected to the test input terminal 21 of the printed circuit board.

[0033] The voltage value of the voltage regulator module 81 is set, and the voltage comparator 83 obtains the standard voltage value set by the voltage regulator module 81 and the actual voltage measured in the circuit of the test probe 3 respectively. The two are compared. If the standard voltage is less than the actual voltage, the output terminal of the voltage comparator 83 outputs a low level, the transistor 9 is turned on, and the vibration motor 10 is started to realize the continuity test.

[0034] To set a standard voltage, the voltage regulator module 81 includes a first voltage regulator 811, a first variable resistor 812, and a second variable resistor 813 disposed in the standard voltage power circuit. The input terminal of the first voltage regulator 811 is connected to the VCC power supply voltage, and the ground terminal is connected to the ground wire of the printed circuit board 2. The output terminal of the first voltage regulator 811 is connected in series with the first variable resistor 812 and the second variable resistor 813. The positive input terminal of the voltage comparator 83 is connected to the circuit between the first variable resistor 812 and the second variable resistor 813.

[0035] By connecting the first variable resistor 812 and the second variable resistor 813 in series in the standard voltage power circuit, the standard voltage is obtained through series voltage division. Different resistance values ​​can be replaced to change the standard voltage value as needed, so that this test device can be used for continuity testing with different resistance values, thus improving its applicability.

[0036] To acquire the actual voltage, the constant current module 82 includes a second voltage regulator 821, a first resistor 822, and a second resistor 823, which are set in the actual voltage power circuit. The input terminal of the second voltage regulator 821 is connected to the VCC power supply voltage, and the ground terminal is connected to the ground wire of the printed circuit board 2. The first resistor 822 and the second resistor 823 are connected in parallel between the output terminal of the second voltage regulator 821 and the test input terminal 21 of the printed circuit board. The negative input terminal of the voltage comparator 83 is connected to the test input terminal 21 of the printed circuit board.

[0037] When the test pin 3 and test lead 4 are in contact with the first test point 5 and the second test point 6 respectively to start the continuity test, the VCC power supply voltage passes through the second regulator 821, the first resistor 822, and the second resistor 823 in sequence to the ground line of the printed circuit board 2, and the voltage comparator 83 collects the measured actual voltage value.

[0038] To achieve illumination in low-light environments, the lighting assembly 11 includes a lamp 111 and a lighting switch 112. One end of the lamp 111 is electrically connected to the lighting switch 112, and the other end is connected to the ground wire of the printed circuit board 2. The other end of the lighting switch 112 is electrically connected to the positive terminal of the battery 72.

[0039] When needed, the lighting switch 112 can be turned on to turn on the lighting lamp 111, thereby providing illumination. When no lighting is needed, the lighting switch 112 can be used to turn off the lighting lamp 111, thus avoiding increased energy consumption.

[0040] To save energy, a power switch 12 is also included in the power circuit. One end of the power switch 12 is electrically connected to the positive battery 72, and the other end is connected to the VCC power supply.

[0041] When a continuity test is required, turn on power switch 12 to supply power via VCC. When a continuity test is not required, turn off power switch 12 to reduce battery power consumption.

[0042] In order to confirm the test results in a timely manner, a buzzer 13 and an indicator light 14 are also included, which are connected in parallel with the vibration motor 10. The vibration motor 10, the buzzer 13, and the indicator light 14 are all connected between the VCC power supply and the ground level.

[0043] By retaining the original buzzer 13 and indicator light 14, the forms of test result feedback are enriched, enabling faster confirmation of test results.

[0044] To filter out high-frequency and low-frequency noise in the standard voltage power circuit and improve test accuracy, a first capacitor 15 and a second capacitor 16 are connected in parallel between the VCC power supply voltage and the ground line of the printed circuit board 2 for filtering out high-frequency and low-frequency noise. A third capacitor 17 and a fourth capacitor 18 are connected in parallel between the output terminal of the first voltage regulator 811 and the ground line of the printed circuit board 2 for filtering out high-frequency and low-frequency noise. A fifth capacitor 19 is also connected in parallel with the second variable resistor 813 for filtering out high-frequency noise.

[0045] To filter out high-frequency and low-frequency noise in the actual voltage power circuit and improve test accuracy, a sixth capacitor 20 and a seventh capacitor 201 are connected in parallel between the VCC power supply voltage and the ground line of the printed circuit board 2 to filter out high-frequency and low-frequency noise. An eighth capacitor 202 and a ninth capacitor 203 are connected in parallel between the combined output terminal of the first resistor 822 and the second resistor 823 and the ground line of the printed circuit board 2 to filter out high-frequency and low-frequency noise.

[0046] In order to filter out high-frequency and low-frequency noise at the voltage comparator 83 and improve the test accuracy, a tenth capacitor 204 for filtering high-frequency noise is connected in parallel between the output terminal of the voltage comparator 83 and the ground line of the printed circuit board 2, and an eleventh capacitor 205 for filtering high-frequency noise is connected in parallel between the VCC terminal of the voltage comparator 83 and the ground line of the printed circuit board 2.

[0047] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0048] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A circuit testing device for an energy storage container, characterized in that: The device includes a housing (1), a printed circuit board (2) disposed inside the housing (1), a test probe (3), and a test line (4). One end of the test probe (3) is connected to the ground wire of the printed circuit board (2), and the other end is in contact with the first test point (5). One end of the test line (4) is connected to the test input terminal (21) of the printed circuit board, and the other end is in contact with the second test point (6). The printed circuit board (2) is also provided with a VCC power supply ground (71) and a positive terminal (72) of the battery (7) connected to the positive and negative terminals of the battery, a test component (8) electrically connected to the test input terminal (21) of the printed circuit board, a transistor (9), and a vibration motor (10). The test component (8), the transistor (9), and the vibration motor (10) are electrically connected in sequence and form a power circuit with the VCC power supply. The device also includes a lighting component (11) connected in the power circuit.

2. The circuit testing device for energy storage containers according to claim 1, characterized in that: The test component (8) includes a voltage regulator module (81), a constant current module (82), and a voltage comparator (83). The voltage regulator module (81) and the constant current module (82) are respectively connected to the positive input terminal and the negative input terminal of the voltage comparator (83). The VCC terminal of the voltage comparator (83) is connected to the VCC power supply voltage, and the ground terminal is connected to the ground wire of the printed circuit board (2). The output terminal of the voltage comparator (83) is electrically connected to the transistor (9), and the constant current module (82) is electrically connected to the test input terminal (21) of the printed circuit board.

3. The circuit testing device for energy storage containers according to claim 2, characterized in that: The voltage regulator module (81) includes a first voltage regulator (811), a first variable resistor (812), and a second variable resistor (813) set in a standard voltage power circuit. The input terminal of the first voltage regulator (811) is connected to the VCC power supply voltage, and the ground terminal is connected to the ground wire of the printed circuit board (2). The output terminal of the first voltage regulator (811) is connected in series with the first variable resistor (812) and the second variable resistor (813). The positive input terminal of the voltage comparator (83) is connected to the circuit between the first variable resistor (812) and the second variable resistor (813).

4. The circuit testing device for energy storage containers according to claim 2, characterized in that: The constant current module (82) includes a second voltage regulator (821), a first resistor (822), and a second resistor (823) set in the actual voltage power circuit. The input terminal of the second voltage regulator (821) is connected to the VCC power supply voltage, and the ground terminal is connected to the ground wire of the printed circuit board (2). The first resistor (822) and the second resistor (823) are connected in parallel between the output terminal of the second voltage regulator (821) and the test input terminal (21) of the printed circuit board. The negative input terminal of the voltage comparator (83) is connected to the test input terminal (21) of the printed circuit board.

5. The circuit testing device for energy storage containers according to claim 1, characterized in that: The lighting assembly (11) includes a lighting lamp (111) and a lighting switch (112). One end of the lighting lamp (111) is electrically connected to the lighting switch (112), and the other end is connected to the ground wire of the printed circuit board (2). The other end of the lighting switch (112) is electrically connected to the positive (72) battery.

6. The circuit testing device for energy storage containers according to claim 1, characterized in that: It also includes a power switch (12) installed in the power circuit, one end of which is electrically connected to the positive (72) battery and the other end is connected to the VCC power supply.

7. The circuit testing device for energy storage containers according to claim 1, characterized in that: It also includes a buzzer (13) and an indicator light (14) connected in parallel with the vibration motor (10), and the vibration motor (10), buzzer (13) and indicator light (14) are all connected between the VCC power supply and the ground level.

8. The circuit testing device for energy storage containers according to claim 3, characterized in that: In the standard voltage power circuit, a first capacitor (15) and a second capacitor (16) for filtering high-frequency noise and low-frequency noise are connected in parallel between the VCC power supply voltage and the ground of the printed circuit board (2). A third capacitor (17) and a fourth capacitor (18) for filtering high-frequency noise and low-frequency noise are connected in parallel between the output terminal of the first voltage regulator (811) and the ground of the printed circuit board (2). A fifth capacitor (19) for filtering high-frequency noise is also connected in parallel with the second variable resistor (813).

9. The circuit testing device for energy storage containers according to claim 4, characterized in that: In the actual voltage power circuit, a sixth capacitor (20) and a seventh capacitor (201) are connected in parallel between the VCC power supply voltage and the ground of the printed circuit board (2) to filter out high-frequency noise and low-frequency noise. An eighth capacitor (202) and a ninth capacitor (203) are connected in parallel between the output terminal of the first resistor (822) and the second resistor (823) and the ground of the printed circuit board (2) to filter out high-frequency noise and low-frequency noise.

10. The circuit testing device for energy storage containers according to claim 2, characterized in that: A tenth capacitor (204) for filtering high-frequency noise is connected in parallel between the output terminal of the voltage comparator (83) and the ground line of the printed circuit board (2), and an eleventh capacitor (205) for filtering high-frequency noise is connected in parallel between the VCC terminal of the voltage comparator (83) and the ground line of the printed circuit board (2).

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