Quick tab connector for battery cell detection

Abstract

The utility model discloses a quick tab connector for battery cell detection, which relates to the technical field of battery detection and comprises a tab connecting piece and a lead communicated with a detection circuit in a test cabinet. The tab connecting piece comprises an insulating outer shell, a conductive plate, an insulating pressing plate and a pressing mechanism; a current-conducting plate is fixedly arranged in the inner cavity of the insulating outer shell, and the wire is connected with the current-conducting plate; a tab insertion hole is formed in the insulating outer shell and corresponds to one side of the current-conducting plate; an insulating pressing plate is arranged right above the conductive plate; and the pressing mechanism is used for pressing the insulating pressing plate downwards. The utility model has the advantages that the connection between the tabs and the test circuit is fast and convenient in the whole battery cell test process, no tool is needed for operation, electric shock accidents can be effectively avoided, and the safety is higher.

Description

Technical Field

[0001] This utility model relates to the field of battery testing technology, and in particular to a quick connector for battery cell testing. Background Technology

[0002] With the rapid development of new energy vehicles, the demand for power battery packs, the core component of these vehicles, is also increasing. During the manufacturing process of power battery packs, individual cells need to be tested. Currently, the most common cell testing cabinets on the market involve first connecting the positive and negative terminals of the cell to the test cabinet's wires. After the connection is stable, the test cabinet is then switched on to supply the test current.

[0003] However, existing battery cell testing cabinets typically use a U-shaped metal plate and pre-tightening bolts as connectors to connect to the positive and negative tabs on the battery cell. During connection, the tabs are first inserted into the opening of the U-shaped metal plate, and then the pre-tightening bolts are tightened to bring the two ends of the U-shaped metal plate closer together, clamping the tabs to complete the connection process. The entire process is cumbersome in three ways: first, it requires repeatedly tightening the pre-tightening bolts with tools; second, point contact frequently occurs during the clamping process, resulting in extremely high contact resistance and affecting test results; and third, there are no insulation protection measures, posing a certain safety hazard. Utility Model Content

[0004] The technical problem to be solved by this utility model is how to make the connection between the tab and the test circuit quick and convenient during the battery cell testing process.

[0005] This utility model solves the above-mentioned technical problems through the following technical means: a quick connector for battery cell testing, comprising a tab connector and a wire, the wire being connected to a testing circuit in a test cabinet; the tab connector comprising an insulating outer shell, a conductive plate, an insulating clamping plate, and a clamping mechanism; the conductive plate is fixedly disposed in the inner cavity of the insulating outer shell, and the wire is connected to the conductive plate; a tab insertion hole is provided on the insulating outer shell, the tab insertion hole corresponding to one side of the conductive plate; an insulating clamping plate is disposed directly above the conductive plate, and the clamping mechanism is used to press the insulating clamping plate downward.

[0006] During the cell testing process, the tabs on the cell are directly inserted into the cell through the tab insertion hole. Then, the clamping mechanism pushes the insulating clamping plate downward to press the tabs onto the conductive plate, allowing for cell testing. After the test is completed, the clamping mechanism is released from the clamping action on the cell tabs, and the cell can be quickly removed. The connection between the tabs and the test circuit is quick and convenient throughout the entire cell testing process, requiring no tools and effectively preventing electric shock accidents, thus providing a high level of safety.

[0007] As an optimized technical solution, the clamping mechanism includes a clamping cam, a wheel axle, and a push-pull handle; a notch is provided on the top of the insulating outer shell, and the lower end of the clamping cam acts on the insulating clamping plate through the notch; a wheel axle that is rotatably connected to the insulating outer shell is fixedly provided on the clamping cam, and a push-pull handle is fixedly connected to the wheel axle.

[0008] Simply push or pull the handle to tighten or loosen the insulating clamping plate; it's easy to operate.

[0009] As an optimized technical solution, rotating seats are provided on the front and rear sides above the notch, and damping bearings connected to the wheel axle are provided in the rotating seats.

[0010] The design of the damping bearing provides resistance to the rotation of the clamping cam, preventing it from rotating and resetting after pressing the insulating clamping plate downwards, thus ensuring the clamping stability of the cell tabs during testing.

[0011] As an optimized technical solution, the outer contour of the cross-section of the clamping cam is an Archimedean spiral.

[0012] The shape of the clamping cam allows it to push the insulating clamping plate downwards at a uniform speed during rotation, pressing it firmly against the electrode tab. This ensures that the electrode tab can make large-area contact with the conductive plate, avoiding excessive resistance due to point contact during testing.

[0013] As an optimized technical solution, the electrode connector further includes a guide and a spring. A guide cylinder is provided on the top of the insulating outer shell. The guide, which is fixedly connected to the upper surface of the insulating pressure plate, is inserted into the guide cylinder. The spring is sleeved on the guide, and the two ends of the spring are respectively connected to the top wall of the insulating outer shell and the insulating pressure plate.

[0014] When the clamping is released after the test is completed, the insulating clamping plate will move upward under the action of the spring, thereby releasing the clamping force on the battery cell tabs.

[0015] As an optimized technical solution, four guide tubes are provided, and the four guide tubes are respectively located at the top four corners of the insulating outer shell, with the four guide members inserted into the corresponding guide tubes.

[0016] To achieve a more stable guiding role.

[0017] As an optimized technical solution, an arc-shaped groove is provided on the upper surface of the insulating clamping plate, and a roller is rotatably arranged in the arc-shaped groove. The roller extends out of the arc-shaped groove and abuts against the lower end of the clamping cam.

[0018] The roller design reduces the frictional resistance of the rotating clamping cam, thus reducing frictional damage and extending the service life of the entire connector.

[0019] As an optimized technical solution, the electrode quick connector for battery cell testing also includes a strip-shaped track seat, on which two electrode connectors are slidably mounted.

[0020] The distance between the two tab connectors is adjustable. When used for testing different types of battery cells, the distance between the two can be quickly adjusted to suit the distance between the positive and negative tabs on the corresponding battery cell, making it more widely applicable.

[0021] As an optimized technical solution, a slider is provided on the lower surface of the insulating outer shell, and the strip track seat includes a base plate, on the upper surface of which a slide rail matching the slider is fixedly provided.

[0022] The movement is stable when the slider and the rail work together.

[0023] As an optimized technical solution, threaded holes are provided on the base plates on both sides of the slide rail.

[0024] The base plate can be fixedly connected to the test cabinet by passing connecting screws through threaded holes. Attached Figure Description

[0025] Figure 1 This is an isometric schematic diagram of the connection between the electrode quick connector for battery cell testing and the battery cell in an embodiment of this utility model.

[0026] Figure 2 This is an isometric schematic diagram of the electrode quick connector used for cell testing according to an embodiment of the present invention.

[0027] Figure 3 This is an isometric schematic diagram of the tab connector according to an embodiment of the present invention.

[0028] Figure 4 This is an isometric schematic diagram of the internal structure of the tab connector in an embodiment of this utility model.

[0029] Figure 5 This is a cross-sectional schematic diagram of the tab connector according to an embodiment of the present utility model. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] like Figures 1 to 5 As shown in the figure, this utility model embodiment discloses a quick connector for battery cell testing, including a strip track seat 1 and two electrode connectors 2. The two electrode connectors 2 are slidably disposed on the strip track seat 1, and each electrode connector 2 is connected to a wire 3, which connects to the testing circuit in the test cabinet.

[0032] The electrode connector 2 includes an insulating housing 201. A slider 213 is provided on the lower surface of the insulating housing 201. The strip track seat 1 includes a base plate 101. A slide rail 102 matching the slider 213 is fixedly provided on the upper surface of the base plate 101. Threaded holes 103 are provided on the base plate 101 on both sides of the slide rail 102. The base plate 101 can be fixedly connected to the test cabinet by passing connecting screws through the threaded holes 103.

[0033] A conductive plate 202 is fixedly installed on the bottom wall of the inner cavity of the insulating outer shell 201. The wire 3 extends into the inner cavity of the insulating outer shell 201 and connects to the conductive plate 202. A tab insertion hole 2011 is opened on the side of the insulating outer shell 201 away from the wire 3, corresponding to one side of the conductive plate 202. An insulating clamping plate 204 is installed directly above the conductive plate 202. The insulating clamping plate 204 is connected to the insulating outer shell 201 through a guide 205 and a spring 206. Four guide tubes 212 are installed at the four corners of the top of the insulating outer shell 201. The four guides 205, which are fixedly connected to the upper surface of the insulating clamping plate 204, are inserted into the corresponding guide tubes 212. The springs 206 are sleeved on the guides 205, and the two ends of the springs 206 are connected to the top wall of the insulating outer shell 201 and the insulating clamping plate 204, respectively.

[0034] The top of the insulating outer shell 201 has a notch 2012, and the lower end of the clamping cam 203 acts on the insulating clamping plate 204 through the notch 2012. A wheel axle 207, which is rotatably connected to the insulating outer shell 201, is fixedly mounted on the clamping cam 203, and a push-pull handle 208 is fixedly connected to the wheel axle 207. Rotating seats 209, integrally formed with the insulating outer shell 201, are provided on the front and rear sides above the notch 2012. The rotating seats 209 are provided with damping bearings 210 connected to the wheel axle 207. The design of the damping bearings 210 provides a certain resistance to the rotation of the clamping cam 203, preventing the clamping cam 203 from rotating and returning to its original position after pressing the insulating clamping plate 204 downward, thus ensuring the clamping stability of the cell tabs during the test. The outer contour of the clamping cam 203 is an Archimedean spiral, which allows it to push the insulating clamping plate 204 downward at a constant speed during rotation, pressing it tightly against the electrode tab. This ensures that the electrode tab can make large-area contact with the conductive plate 202, avoiding excessive resistance due to point contact during testing.

[0035] An arc-shaped groove is formed on the upper surface of the insulating clamping plate 204, and a roller 211 is rotatably disposed in the arc-shaped groove. The roller 211 extends out of the arc-shaped groove and abuts against the lower end of the clamping cam 203. The design of the roller 211 can reduce the frictional resistance of the clamping cam 203 rotating on the clamping cam 203, reduce frictional damage to the clamping cam 203, and extend the service life of the entire connecting part.

[0036] Working principle: First, align one end of the battery cell with positive and negative tabs with the two tab connectors 2. After adjusting the distance between the two tab connectors 2, insert the positive and negative tabs on the battery cell into the corresponding tab connectors 2. Then, the operator applies pressure to the corresponding push-pull handles 208 with both hands to rotate the clamping cam 203. During the rotation of the clamping cam 203, the insulating clamping plate 204 will be slowly pushed downward until the insulating clamping plate 204 firmly presses the tabs of the battery cell onto the upper surface of the conductive plate 202. Next, the operator presses the button on the test cabinet to connect the detection circuit, thereby realizing the detection of the battery cell. After the detection is completed, the operator applies pressure to the push-pull handles 208 in the opposite direction, causing the clamping cam 203 to rotate in the opposite direction. At this time, under the force of the spring 206, the insulating clamping plate 204 will move upward, thereby releasing the clamping force on the battery cell tabs. Finally, the operator can remove the battery cell.

[0037] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A quick-connect electrode for battery cell testing, characterized in that: The device includes a tab connector and a wire, the wire connecting to a detection circuit in a test cabinet; the tab connector includes an insulating outer shell, a conductive plate, an insulating clamping plate, and a clamping mechanism; the conductive plate is fixedly disposed within the inner cavity of the insulating outer shell, and the wire is connected to the conductive plate; a tab insertion hole is provided on the insulating outer shell, the tab insertion hole corresponding to one side of the conductive plate; an insulating clamping plate is disposed directly above the conductive plate, and the clamping mechanism is used to press the insulating clamping plate downwards.

2. The quick-connect electrode for cell testing according to claim 1, characterized in that: The clamping mechanism includes a clamping cam, a wheel axle, and a push-pull handle; a notch is provided on the top of the insulating outer shell, and the lower end of the clamping cam acts on the insulating clamping plate through the notch; a wheel axle that is rotatably connected to the insulating outer shell is fixedly provided on the clamping cam, and a push-pull handle is fixedly connected to the wheel axle.

3. The quick-connect electrode for cell testing according to claim 2, characterized in that: Rotating seats are provided on the front and rear sides above the notch, and damping bearings connected to the wheel axle are provided in the rotating seats.

4. The quick-connect electrode for cell testing according to claim 2, characterized in that: The outer contour of the cross-section of the clamping cam is an Archimedean spiral.

5. The quick connector for cell testing according to claim 2, characterized in that: The upper surface of the insulating clamping plate is provided with an arc-shaped groove, and a roller is rotatably arranged in the arc-shaped groove. The roller extends out of the arc-shaped groove and abuts against the lower end of the clamping cam.

6. The quick-connect electrode for cell testing according to claim 1, characterized in that: The electrode connector also includes a guide and a spring. A guide sleeve is provided on the top of the insulating outer shell. The guide, which is fixedly connected to the upper surface of the insulating pressure plate, is inserted into the guide sleeve. The spring is sleeved on the guide. The two ends of the spring are respectively connected to the top wall of the insulating outer shell and the insulating pressure plate.

7. The quick-connect electrode for cell testing according to claim 6, characterized in that: The guide tubes are provided in four positions, which are respectively located at the four corners of the top of the insulating outer shell, and the four guide components are respectively inserted into the corresponding guide tubes.

8. The quick-connect electrode for cell testing according to claim 1, characterized in that: The quick connector for battery cell testing also includes a strip rail base, on which two electrode connectors are slidably mounted.

9. The quick-connect electrode for cell testing according to claim 8, characterized in that: The lower surface of the insulating outer shell is provided with a slider, and the strip track seat includes a base plate, on the upper surface of which a slide rail matching the slider is fixedly provided.

10. The quick-connect electrode for cell testing according to claim 8, characterized in that: The base plates on both sides of the slide rail are provided with threaded holes.

Images