Novel pulse tester verification tool

Abstract

The utility model relates to a novel pulse tester verification tool comprising an insulation housing, the right side of the front surface of the insulation housing is provided with a knob switch used for rapidly switching test gears / lines, and the lower part of the left side of the front surface of the insulation housing is provided with a group of meter pen binding posts. A gear mark for explaining a test gear is arranged above the left side of the front surface of the insulating shell, and a PCB (Printed Circuit Board) for realizing circuit integration is arranged in the insulating shell; the device has the advantages of being reasonable in structure, more efficient and convenient, and rapid and effective in detection.

Description

Technical Field

[0001] This utility model belongs to the technical field of battery cell testing equipment, specifically relating to a novel pulse tester calibration fixture. Background Technology

[0002] Abnormalities in the internal structure of battery cells caused by dust particles and other defects during the battery cell manufacturing process are difficult to detect through visual inspection. Therefore, it is necessary to use specific instruments to test the electrical performance of the cells to determine if internal abnormalities exist. Currently, the most common testing instruments are pulse-type and resistance-type. Pulse testers are widely used in the lithium battery industry due to their high efficiency, accuracy, and ease of classification. However, it is difficult to detect malfunctions of instruments like pulse testers through direct visual means. Professional measuring devices are often bulky and sometimes limited by usage conditions, making them inconvenient to use on-site. Therefore, it is essential to provide a new type of pulse tester calibration fixture that is structurally sound, more efficient, convenient, and allows for rapid and effective detection. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a new type of pulse tester calibration fixture that is structurally reasonable, more efficient and convenient, and allows for rapid and effective detection.

[0004] The purpose of this utility model is achieved as follows: a novel pulse tester calibration fixture, comprising an insulating shell, a rotary switch for quickly switching test ranges / circuits is provided on the front right side of the insulating shell, a set of test lead terminals is provided on the lower left side of the front of the insulating shell, a range indicator for indicating the test range is provided on the upper left side of the front of the insulating shell, and a PCB board for circuit integration is provided inside the insulating shell.

[0005] The PCB board is electrically connected to the rotary switch and the test lead terminals via wires.

[0006] The test lead terminals include a positive terminal and a negative terminal. The test leads are inserted into the corresponding jacks to achieve quick connection and disconnection with the instrument.

[0007] The gear indicator includes preset function descriptions for different gears 1-4, facilitating timely comparison and verification of effects.

[0008] The gear position markings indicate that gear 1 is an open circuit; gear 2 is a protective resistor; gear 3 is a capacitor; and gear 4 is a resistor connected in parallel.

[0009] The beneficial effects of this utility model are as follows: This utility model is a novel pulse tester calibration fixture. Addressing the aforementioned anomalies, it provides a more efficient and convenient instrument testing method. In use, it simulates several common states of battery cells using standard components. The instrument is triggered for testing, and the presence of anomalies is determined by comparing the instrument's display with the preset state. This invention has the following advantages: ① It simulates battery cell states using standard components, confirming instrument performance through standardized configurations; ② It is simple to operate, requiring no professional personnel, and can be completed by on-site operators; ③ It has multiple functions, simulating various states for easy troubleshooting; ④ It is highly efficient, with internal parameters preset based on the on-site battery cell performance. This utility model has the advantages of reasonable structure, higher efficiency and convenience, and rapid and effective testing. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 .

[0011] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 .

[0012] Figure 3 This is the circuit diagram of this utility model.

[0013] Figure 4 This is a schematic diagram of the testing principle of this utility model. Figure 1 .

[0014] Figure 5 This is a schematic diagram of the testing principle of this utility model. Figure 2 .

[0015] Figure 6 This is a Ruijie test waveform diagram for gear 1 of this utility model.

[0016] Figure 7 This is a waveform diagram of the test of gear position 1 of this utility model.

[0017] Figure 8 This is a Ruijie test waveform diagram for gear position 2 of this utility model.

[0018] Figure 9 This is a waveform diagram of the test for gear position 2 of this utility model.

[0019] Figure 10 This is a Ruijie test waveform diagram for gear 3 of this utility model.

[0020] Figure 11 This is a waveform diagram of the test of gear position 3 of this utility model.

[0021] Figure 12 This is a test waveform diagram of gear 4 of this utility model.

[0022] Figure 13 This is a waveform diagram of the test of gear 4 of this utility model.

[0023] In the diagram: 1. Rotary switch; 2. Meter probe terminals; 3. Gear position indicator; 4. PCB board; 5. Insulating housing. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings. Example

[0025] like Figure 1-3 As shown, a novel pulse tester calibration fixture includes an insulating housing 5. A rotary switch 1 for quickly switching test ranges / circuits is provided on the front right side of the insulating housing 5. A set of test lead terminals 2 is provided on the lower front left side of the insulating housing 5. A range indicator 3 for indicating the test range is provided on the upper front left side of the insulating housing 5. A PCB board 4 for circuit integration is provided inside the insulating housing 5.

[0026] In this embodiment, the insulating outer shell can effectively block the user from the internal circuitry, preventing electric shock.

[0027] The PCB board 4 is electrically connected to the rotary switch 1 and the test lead terminals 2 via wires.

[0028] The probe terminals 2 include a positive terminal and a negative terminal. The probes are inserted into the corresponding sockets to achieve quick connection and disconnection with the instrument.

[0029] The gear position identifier 3 includes preset function text descriptions for different gear positions 1-4, which facilitates timely comparison and verification of the effects.

[0030] The gear position 1 in gear position 3 is an open circuit; the gear position 2 is a protective resistor; the gear position 3 is a capacitor; and the gear position 4 is a resistor connected in parallel.

[0031] In this embodiment, ① the gear position 1 is internally open circuit, which is used to simulate the abnormality of not contacting the battery cell. This can verify the effectiveness of the open circuit function and facilitate the prevention of abnormal circuits and avoid missed detections caused by bypassing the circuit.

[0032] ② The internal part of position 2 is a protective resistor, which is used to simulate the abnormal short circuit of the battery cell. It can verify the effectiveness of the short circuit function and prevent the abnormal short circuit from flowing out.

[0033] ③ The inside of gear 3 is a capacitor, which is used to simulate the results of a normal battery cell. This can verify the effectiveness of the instrument in judging a normal battery cell and prevent the normal judgment function of the instrument from failing.

[0034] ④ The internal resistor in position 4 is a parallel resistor, which is used to simulate a micro short circuit anomaly in the battery cell. This can verify the effectiveness of the battery cell in identifying micro short circuit anomalies and prevent such misjudgments and omissions.

[0035] This invention relates to a novel pulse tester calibration fixture, providing a more efficient and convenient instrument testing method to address the aforementioned anomalies. In use, it simulates several common states of battery cells using standard components. The instrument is triggered for testing, and the presence of anomalies is determined by comparing the instrument's display with the preset state. This invention has the following advantages: ① It simulates battery cell states using standard components, confirming instrument performance through standardized configurations; ② It is simple to operate, requiring no professional personnel and can be completed by on-site operators; ③ It has multiple functions, simulating various states for easy troubleshooting; ④ It is highly efficient, with internal parameters preset based on the on-site battery cell performance. This invention boasts advantages such as a reasonable structure, higher efficiency and convenience, and rapid and effective testing. Example

[0036] like Figure 1-13 As shown, a novel pulse tester calibration fixture includes an insulating housing 5. A rotary switch 1 for quickly switching test ranges / circuits is provided on the front right side of the insulating housing 5. A set of test lead terminals 2 is provided on the lower front left side of the insulating housing 5. A range indicator 3 for indicating the test range is provided on the upper front left side of the insulating housing 5. A PCB board 4 for circuit integration is provided inside the insulating housing 5.

[0037] In this embodiment, the tooling of this utility model realizes a tool that allows for intuitive judgment of results without simply observing the test results through a knob switch; one tooling can verify all instruments in the entire second section.

[0038] I. Testing Principle: The essence of this instrument calibration fixture is to use standard parts to simulate the characteristics of the workpiece being verified, connect it to the circuit under test, and after the test is triggered, qualitatively judge the instrument's status based on the test results. Because the standard parts have stable performance and their parameters are accurately calculated, the fixture itself can be regarded as a stable standard part. The layered structure of the battery cell is very similar to that of a capacitor, such as... Figure 4-5 As shown; the cell model is very similar to a capacitor. In the OK position, it is actually measuring the waveform of a capacitor. Generally, a 1μF capacitor is connected in parallel with a large resistor or a separate capacitor. The VD2 abnormal position is mainly used to detect micro short circuit abnormalities. By changing the size of the parallel resistor, micro short circuits under different parameters can be identified. The short circuit position can generally be achieved by directly shorting with a wire or connecting a protective resistor.

[0039] II. Operation Method - General Operation

[0040] 1. Insert the test leads into the terminals (this fixture does not distinguish between positive and negative terminals); 2. Confirm the interface is the test interface; 3. Insert the test leads into the ports on the back of the chassis; 4. Click "start" to begin the test and read the waveform and test results. Note: The fixture contains standard capacitors that do not require polarity differentiation; therefore, polarity does not need to be considered when wiring.

[0041] III. Operation Mode - Pulse Type

[0042] ① Gear 1: Confirm that the no-load test function is working properly. The test results are as follows: Figure 6-7 As shown, if this type of abnormality cannot be identified, the poorly connected battery cell will be judged as OK, which is prone to missed detection; if this waveform appears in the production process, the circuit should be checked first for poor contact.

[0043] ② Gear 2: Confirm whether the test function is normal, and the test results are as follows. Figure 8-9 As shown, if "OK" cannot be displayed, it means that the instrument has lost its normal detection capability.

[0044] ③ Gear 3: Confirm whether the short-circuit function is normal. The test results are as follows: Figure 10-11 As shown, if such anomalies cannot be detected, it indicates that the instrument has lost its normal detection capability.

[0045] ④ Gear 4: Confirm whether the micro-short circuit recognition is normal. The test results are as follows: Figure 12-13 As shown, if such anomalies cannot be detected, it indicates that the instrument has abnormal detection capabilities. It is recommended to first check whether the free discharge function is turned on; to confirm the process parameters, the instrument and tooling parameters need to be matched.

[0046] This invention relates to a novel pulse tester calibration fixture, providing a more efficient and convenient instrument testing method to address the aforementioned anomalies. In use, it simulates several common states of battery cells using standard components. The instrument is triggered for testing, and the presence of anomalies is determined by comparing the instrument's display with the preset state. This invention has the following advantages: ① It simulates battery cell states using standard components, confirming instrument performance through standardized configurations; ② It is simple to operate, requiring no professional personnel and can be completed by on-site operators; ③ It has multiple functions, simulating various states for easy troubleshooting; ④ It is highly efficient, with internal parameters preset based on the on-site battery cell performance. This invention boasts advantages such as a reasonable structure, higher efficiency and convenience, and rapid and effective testing.

Claims

1. A novel pulse tester calibration fixture, comprising an insulating housing, characterized in that: The insulating housing has a rotary switch on the front right side for quick switching of test range / circuit, a set of test lead terminals on the lower left side of the front of the insulating housing, a range indicator on the upper left side of the front of the insulating housing for explaining the test range, and a PCB board for circuit integration inside the insulating housing. The PCB board is electrically connected to the rotary switch and the test lead terminals via wires. The test lead terminals include a positive terminal and a negative terminal. The test leads are inserted into the corresponding jacks to achieve quick connection and disconnection with the instrument.

2. The novel pulse tester calibration fixture according to claim 1, characterized in that: The gear position identifier includes the preset function text descriptions for different gear positions 1-4.

3. The novel pulse tester calibration fixture according to claim 2, characterized in that: The gear position markings indicate that gear 1 is an open circuit; gear 2 is a protective resistor; gear 3 is a capacitor; and gear 4 is a resistor connected in parallel.

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