Tool for measuring cell voltage

Abstract

The utility model discloses a kind of tool for measuring battery single cell voltage, it includes: voltmeter, positive probe lead and negative probe lead are connected on the voltmeter;Positive stainless steel probe, the positive stainless steel probe is L type structure, the positive stainless steel probe is located at the end of the positive probe lead;Negative stainless steel probe, the negative stainless steel probe is L type structure, the negative stainless steel probe is located at the end of the negative probe lead;After the positive stainless steel probe and negative stainless steel probe of L type pass through battery upper cover exhaust plug hole, respectively with positive busbar and negative busbar contact, compared with traditional straight probe, the product can directly complete voltage single cell detection by exhaust plug hole or pressure reducing valve hole, and detection is efficient.

Description

Technical Field

[0001] This utility model belongs to the field of battery testing technology, specifically relating to a tooling for measuring the voltage of a single battery cell. Background Technology

[0002] Failure modes of lead-acid batteries include reverse polarity, leakage (or gas leakage), short circuit, open circuit, lagging individual cells, electrolyte depletion, and low charge. Currently, the after-sales battery inspection and testing process requires first determining if the battery has obvious leakage, impact damage, or reverse polarity issues, and then using a micrometer (in pre-charging mode) for testing. For batteries with lagging individual cells, it is necessary to test the individual cell voltage. The conventional method is to remove the battery cover to expose the positive and negative busbars in the individual cell and complete the individual cell voltage test. However, removing the cover for testing is time-consuming, laborious, and inefficient. If the cover is not removed, the vent plug or pressure reducing valve on the battery box needs to be removed, but conventional straight probes cannot reach the internal positive and negative busbars through the test holes, making it impossible to perform the individual cell voltage test.

[0003] Therefore, how to provide a time-saving and labor-saving tool that can detect the voltage of a single cell without removing the battery cover is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the present invention provides a tooling for measuring the voltage of a single battery cell, which can contact the positive and negative busbars without removing the battery cover, thereby realizing the measurement of the voltage of a single battery cell.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a tooling for measuring the voltage of a single battery cell, comprising:

[0006] A voltmeter, wherein a positive probe lead and a negative probe lead are connected to the voltmeter;

[0007] A positive electrode stainless steel probe, wherein the positive electrode stainless steel probe has an L-shaped structure and is located at the end of the positive electrode probe lead;

[0008] The negative electrode stainless steel probe has an L-shaped structure and is located at the end of the negative electrode probe lead. The L-shaped positive electrode stainless steel probe and negative electrode stainless steel probe pass through the vent hole of the battery cover and then contact the positive electrode busbar and the negative electrode busbar respectively.

[0009] The beneficial effects of this utility model are: compared with traditional voltmeters, this product, by utilizing the characteristics of L-shaped positive and negative stainless steel probes, allows the probes to contact the positive and negative busbars through the vent hole or pressure reducing hole without removing the battery cover, thereby realizing the measurement of the voltage of a single cell of the battery. This saves time and effort, eliminates the need to remove the battery cover, and makes the testing highly efficient.

[0010] Preferably, the positive and negative stainless steel probes are respectively provided with insulating sleeves, one end of the insulating sleeve extends to the corresponding probe lead, the other end of the insulating sleeve extends to the corresponding probe edge, and the insulating sleeve is provided with a thickened gripping column.

[0011] The resulting technical effect is that the thickened grip section on the insulating sleeve makes it easier for the operator to hold the device. Understandably, the insulating sleeve can effectively protect the operator from electric shock. In addition, except for the part of the probe that contacts the busbar at the end, the rest of the probe is fully insulated to prevent short circuits between the positive and negative poles.

[0012] Preferably, the outer diameter of the insulating sleeve is larger than the outer diameter of the positive probe lead and the negative probe lead.

[0013] The resulting technical effect is that the middle part of the insulating sleeve is thickened, while the two ends are thinner, making it easier to handle the insulating sleeve.

[0014] Preferably, the voltmeter is a digital display voltmeter, the voltmeter has a measurement voltage range of -5V to 5V, and the voltmeter has an accuracy of 0.01V. Attached Figure Description

[0015] Figure 1 This is a structural diagram of a tooling for measuring the voltage of a single battery cell according to the present invention;

[0016] Figure 2 This is a structural diagram of the battery to be inspected.

[0017] Figure 3 This is a diagram showing the arrangement of the positive and negative busbars inside the battery.

[0018] 1. Voltmeter, 2. Positive probe lead, 3. Negative probe lead, 4. Positive stainless steel probe, 5. Negative stainless steel probe, 6. Insulating sleeve, 7. Grip column, 8. Battery, 9. Positive busbar, 10. Negative busbar, 11. Exhaust plug hole. Detailed Implementation

[0019] 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.

[0020] See appendix to this utility model Figures 1 to 3 According to an embodiment of the present invention, a tooling for measuring the voltage of a single battery cell includes:

[0021] Voltmeter 1, with a positive probe lead 2 and a negative probe lead 3 connected to it;

[0022] Positive electrode stainless steel probe 4, which has an L-shaped structure, is located at the end of the positive electrode probe lead 2;

[0023] The negative electrode stainless steel probe 5 has an L-shaped structure and is located at the end of the negative electrode probe lead 3. The L-shaped positive electrode stainless steel probe 4 and negative electrode stainless steel probe 5 pass through the vent hole 11 of the battery cover and then contact the positive electrode busbar 9 and the negative electrode busbar 10 respectively.

[0024] In other embodiments, the positive electrode stainless steel probe 4 and the negative electrode stainless steel probe 5 are respectively provided with insulating sleeves 6. One end of the insulating sleeve 6 extends to the corresponding probe lead, and the other end of the insulating sleeve 6 extends to the corresponding probe edge. The insulating sleeve 6 is provided with a thickened gripping column 7 to facilitate the operation of the insulating sleeve by the operator.

[0025] Specifically, the outer diameter of the insulating sleeve 6 is larger than the outer diameter of the positive probe lead 2 and the negative probe lead 3. It can be understood that, except for the probe tip, the rest should be protected by the insulating sleeve.

[0026] More specifically, voltmeter 1 is a digital display voltmeter, the voltage measurement range of voltmeter 1 is -5V to 5V, and the accuracy of voltmeter 1 is 0.01V.

[0027] Traditional voltmeters use straight probes that cannot pass through the vent hole to contact the internal positive and negative busbars, requiring the battery cover to be removed. This undoubtedly increases labor intensity and causes unnecessary damage. This product directly contacts the positive and negative busbars inside each cell through the vent hole, thus enabling rapid detection of the voltage in a single cell.

[0028] The apparatus and methods disclosed in the embodiments are described simply because they correspond to the methods disclosed in the embodiments. For relevant details, please refer to the method section.

[0029] 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 fixture for measuring the voltage of a single battery cell, characterized in that, include: A voltmeter (1) is connected to a positive probe lead (2) and a negative probe lead (3); Positive electrode stainless steel probe (4), the positive electrode stainless steel probe (4) has an L-shaped structure, and the positive electrode stainless steel probe (4) is located at the end of the positive electrode probe lead (2); The negative electrode stainless steel probe (5) has an L-shaped structure and is located at the end of the negative electrode probe lead (3). The L-shaped positive electrode stainless steel probe (4) and negative electrode stainless steel probe (5) pass through the vent hole (11) of the battery cover and then contact the positive electrode busbar (9) and negative electrode busbar (10) respectively.

2. The fixture for measuring the voltage of a single battery cell according to claim 1, characterized in that, Insulating sleeves (6) are provided on the positive electrode stainless steel probe (4) and the negative electrode stainless steel probe (5), respectively. One end of the insulating sleeve (6) extends to the corresponding probe lead, and the other end of the insulating sleeve (6) extends to the corresponding probe edge. The insulating sleeve (6) is provided with a thickened gripping column section (7).

3. The fixture for measuring the voltage of a single battery cell according to claim 2, characterized in that, The outer diameter of the insulating sleeve (6) is larger than the outer diameter of the positive probe lead (2) and the negative probe lead (3).

4. The fixture for measuring the voltage of a single battery cell according to claim 1, characterized in that, The voltmeter (1) is a digital display voltmeter, the voltage range of the voltmeter (1) is -5V to 5V, and the accuracy of the voltmeter (1) is 0.01V.

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