Probe connection device and secondary battery short circuit test device

Abstract

This utility model discloses a probe connection device for connecting probes to a secondary battery testing device. It includes: a connector, which can be connected to the secondary battery testing device, the connector having a connecting groove, and at least one wall surface forming the connecting groove having a recess; a probe assembly, including a connecting block, on which a probe is disposed, and the connecting block can be fixed within the connecting groove; and an elastic element disposed on the connecting block, capable of engaging within the recess. A secondary battery short-circuit testing device using the above-described probe connection device is also disclosed. Through the above technical solution, the probe connection device disclosed in this application uses a connection groove and a connecting block to achieve quick connection and disconnection of the probe. When the connecting block and the connecting groove are connected, the elastic element ensures the probe is properly installed and the connection is stable.

Description

Technical Field

[0001] This utility model relates to the field of secondary battery production technology, specifically a probe connection device and a secondary battery short-circuit testing device. Background Technology

[0002] In the production and testing of secondary batteries, short-circuit testing is a crucial step in ensuring battery safety and performance. The short-circuit test probe is a key component for this test, requiring close contact with the battery's electrodes to obtain accurate test data.

[0003] However, existing short-circuit test probes have some problems in practical use. On the one hand, due to frequent insertion and removal and friction during the testing process, the probes are prone to wear and need to be replaced regularly. However, the existing probe mounting structure is difficult to disassemble, often requiring a long time and complex tools, which seriously affects production efficiency. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, this utility model provides a probe connection device and a secondary battery short-circuit test device. The probe connection device uses a connection slot and a connection block to realize quick connection and disconnection of the probe. When the connection block and the connection slot are connected, an elastic element is used to ensure that the probe is installed in place and the connection is stable.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a probe connection device, which can be used to connect a probe to a secondary battery testing device, comprising:

[0006] A connector, which can be connected to a secondary battery testing device, is provided with a connecting groove, and at least one wall surface forming the connecting groove is provided with a recess.

[0007] A probe assembly, comprising a connecting block on which a probe is disposed, wherein the connecting block can be fixed within the connecting groove;

[0008] An elastic element is disposed on the connecting block and can be engaged in the groove.

[0009] Through the above technical solution, the probe connection device disclosed in this application uses the connection method of connection groove and connection block to realize quick disconnection and connection of probe. When the connection block and connection groove are connected, the elastic element is used to ensure that the probe is installed in place and the connection is stable.

[0010] Furthermore, the width of the connecting groove near the opening is smaller than the width inside the connecting groove;

[0011] The connecting groove extends through the connecting seat at least one end along its width direction, forming an inlet / outlet for the connecting block to enter the connecting groove.

[0012] With the above technical solution, the connecting block is installed into the connecting groove from the inlet and outlet. Since the width of the connecting groove near the opening is smaller than the width inside the connecting groove, a semi-closed opening groove structure is formed, so that the connecting block can be fixed in the radial direction of the connecting groove.

[0013] Furthermore, along the depth direction of the connecting groove, the width of the connecting groove decreases from the inside to the outside. That is, the connecting groove is trapezoidal, and the trapezoidal shape has a guiding function, which can ensure that the elastic element can smoothly enter the groove.

[0014] Furthermore, the connecting block includes:

[0015] A probe connector is connected to the probe, and the width of the probe connector is less than or equal to the width of the opening of the connector groove;

[0016] A fixing part is provided, which is connected and fixed to the probe connecting part. The width of the fixing part increases from the junction of the fixing part and the probe connecting part toward the fixing part. The elastic element is provided on the fixing part.

[0017] With the above technical solution, one end of the connecting block is inserted into the connecting groove from the inlet and outlet. Since the width of the probe connection part is less than or equal to the width of the opening of the connecting groove, the connecting block can slide in the connecting groove until the elastic element is inserted into the groove.

[0018] Furthermore, the fixing part is provided with a mounting hole, and the elastic element is disposed within the mounting hole. When the connecting block is inserted into the connecting groove, the elastic element can be fully inserted into the mounting hole, preventing the elastic element from affecting the installation.

[0019] Furthermore, the elastic element includes:

[0020] A spring, one end of which is connected and fixed to the bottom of the mounting hole;

[0021] A ball bearing is fixedly connected to one end of a spring that is away from the bottom of the mounting hole.

[0022] When the connecting block is inserted into the connecting groove, the spring is compressed so that the ball bearings are fully inserted into the mounting hole.

[0023] Furthermore, at least half of the ball extends out of the mounting hole to ensure that the ball can be engaged in the groove under the action of the spring.

[0024] Furthermore, the original length of the spring is equal to the depth of the mounting hole.

[0025] Furthermore, the groove is arc-shaped, which, compared to a square-edged design, makes disassembly easier when combined with the ball bearing.

[0026] A secondary battery short-circuit testing device, wherein the secondary battery short-circuit testing device uses the above-mentioned probe connection device to connect probes.

[0027] Based on the above technical solution, the beneficial effects of this utility model are as follows:

[0028] The probe connection device disclosed in this application uses a connection slot and a connection block to achieve quick connection and disconnection of the probe. When the connection block and the connection slot are connected, an elastic element is used to ensure that the probe is installed in place and that the connection is stable.

[0029] To make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0030] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the overall structure of the probe connection device in an embodiment of this utility model;

[0032] Figure 2 This is a schematic diagram of the connecting seat in an embodiment of this utility model;

[0033] Figure 3 This is a schematic diagram of the probe assembly in an embodiment of the present invention;

[0034] Figure 4 This is a top view of the probe assembly in an embodiment of this utility model;

[0035] Figure 5 This is a bottom view of the connecting seat according to an embodiment of the present utility model.

[0036] The reference numerals in the above figures are as follows: 1. Connecting seat; 11. Connecting groove; 111. Side wall; 112. Bottom wall; 12. Groove; 2. Connecting block; 21. Probe connecting part; 22. Fixing part; 221. Waist of fixing part; 222. Mounting hole; 3. Probe; 4. Ball bearing. Detailed Implementation

[0037] 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.

[0038] It should be noted that in the description of this utility model, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0039] Example: This example discloses a probe connection device, which can be used to connect probes to a secondary battery testing device. The probe connection device includes:

[0040] A connecting seat 1 is provided, which can be connected to a secondary battery testing device. The connecting seat 1 is provided with a connecting groove 11, at least one end of which extends through the connecting seat 1 along its width direction. An inlet and outlet for the connecting block 2 to enter the connecting groove 11 are formed on the side of the connecting seat 1. A groove 12 is provided on at least one wall surface forming the connecting groove 11.

[0041] In some feasible embodiments, such as Figure 2 As shown, the connecting groove 11 is disposed on the bottom surface of the connecting seat 1. The connecting groove 11 penetrates the connecting seat 1 along the first direction, that is, the connecting groove 11 is composed of two opposing side walls 111 and a bottom wall 112.

[0042] The width of the connecting groove 11 near the opening is smaller than the width inside the connecting groove 11. With this design, the connecting groove 11 forms a semi-closed opening groove structure, thereby allowing the connecting block 2 to be fixed radially in the connecting groove 11.

[0043] In some feasible embodiments, along the depth direction of the connecting groove 11, the width of the connecting groove 11 decreases from the inside to the outside, such as... Figure 2 As shown, along the depth direction of the connecting groove 11, the width of the connecting groove 11 decreases from top to bottom, making the connecting groove 11 as a whole trapezoid, forming two waists of the two side walls 111 of the connecting groove 11 that are trapezoidal.

[0044] The trapezoidal shape has a guiding function, which can ensure that the angle of the connecting block 2 relative to the connecting groove 11 remains unchanged when the connecting block 2 is inserted into the connecting groove 11.

[0045] The connector 1 is used to fix the probe assembly, which includes a connector block 2 and a probe 3 fixed on the connector block 2. The probe 3 is mainly used in secondary battery short-circuit testing to detect internal or external short circuits in the secondary battery. By contacting the battery electrodes, the probe 3 can transmit electrical signals, detect the battery's electrical characteristics, and thus determine whether a short circuit exists.

[0046] In some feasible embodiments, such as Figure 3 As shown, the connecting block 2 includes a probe connecting portion 21 for fixing the probe 3. The width of the probe connecting portion 21 is less than or equal to the width of the opening of the connecting groove 11. A fixing portion 22 is provided on the side of the probe connecting portion 21 away from the probe 3. From the junction of the fixing portion 22 and the probe connecting portion 21 toward the fixing portion 22, the width of the fixing portion 22 increases, that is, the fixing portion 22 is trapezoidal. It should be noted that the waist 221 of the trapezoidal fixing portion and the sidewall 111 forming the connecting groove 11 are mutually adapted.

[0047] When the connecting block 2 is installed into the connecting groove 11, the fixing part 22 enters the connecting groove 11 along the inlet and outlet on the connecting seat 1 and slides along the connecting groove 11. Since both the connecting groove 11 and the fixing part 22 are trapezoidal structures, the angle of the connecting block 2 relative to the connecting groove 11 remains unchanged when the connecting block 2 is inserted into the connecting groove 11. This effectively prevents the probe assembly from shaking radially in the connecting groove, ensuring stable contact between the probe 3 and the electrodes of the secondary battery. In addition, after the probe assembly is inserted, under the action of gravity and vibration during the test, the probe assembly will fit more tightly against the connecting seat 1, providing a certain self-locking function and improving the stability of the structure.

[0048] The connecting block 2 is provided with an elastic element, which is configured such that when the connecting block 2 slides along the connecting groove 11 to a preset position, the elastic element can be engaged in the groove 12.

[0049] In some feasible embodiments, such as Figure 4 As shown, the fixing part 22 is provided with a mounting hole 222. The elastic element is disposed in the mounting hole 12, and the elastic element can be fully inserted into the mounting hole 222. When the connecting block 2 is installed into the connecting groove 11, the elastic element can be fully inserted into the mounting hole, avoiding the elastic element from affecting the installation.

[0050] In some feasible embodiments, the elastic element includes a spring, one end of which is fixedly connected to the bottom of the mounting hole 222, and a ball bearing 4 is connected to the end of the spring facing away from the bottom of the mounting hole 222. It should be noted that, at its original length, at least half of the ball bearing 4 extends out of the mounting hole 222 to ensure that the ball bearing can be engaged in the groove under the action of the spring.

[0051] In some feasible embodiments, the groove 12 is disposed on the bottom wall 112 of the connecting groove 11, and correspondingly, the mounting hole 222 is disposed on the side of the fixing part 22 opposite to the probe connecting part 21. The groove 12 is configured as an arc shape, and the radius of the ball 4 and the groove 12 are equal. Compared with a square-edged design, the arc-shaped groove 12 and the ball 4 make disassembly easier.

[0052] When the connecting block 2 is inserted into the connecting groove 11, the spring is compressed so that the ball 4 is fully inserted into the mounting hole 222, so as to avoid the ball 4 affecting the installation. When the connecting block 2 slides to the preset position in the connecting groove 11, the ball 4 is engaged in the groove 12 under the action of the spring.

[0053] In some feasible embodiments, the connecting groove 11 and the connecting block 2 can be configured such that: the connecting groove 11 penetrates the connecting seat 1; a second connecting groove is provided on at least one side wall of the connecting groove 11; and the groove 12 is also provided on the bottom wall of the connecting groove 11; the connecting block 2 has a protruding connecting post relative to the side of the second connecting groove; the connecting block 2 is also provided with the mounting hole 222, and a spring and a ball bearing 4 are also provided in the mounting hole 222. When the connecting block 2 is inserted into the connecting groove 11, the connecting block 2 can be fixed radially in the connecting groove 11 simply by inserting the connecting post into the second connecting groove.

[0054] This application also discloses a secondary battery short-circuit testing device, wherein the secondary battery short-circuit testing device uses the above-mentioned probe connection device to connect probe 3.

[0055] This utility model uses specific embodiments to illustrate the principle and implementation of the utility model. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​the utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the utility model. Therefore, the content of this specification should not be construed as a limitation of the utility model.

Claims

1. A probe connecting device which can be used to connect a probe to a secondary battery testing device, characterized by, include: A connector, which can be connected to a secondary battery testing device, is provided with a connecting groove, and at least one wall surface forming the connecting groove is provided with a recess. A probe assembly, comprising a connecting block on which a probe is disposed, wherein the connecting block can be fixed within the connecting groove; An elastic element is disposed on the connecting block and can be engaged in the groove.

2. The probe connection apparatus of claim 1, wherein The width of the connecting groove near the opening is smaller than the width inside the connecting groove; The connecting groove extends through the connecting seat at least one end along its width direction, forming an inlet / outlet for the connecting block to enter the connecting groove.

3. The probe connection apparatus of claim 2, wherein Along the depth direction of the connecting groove, the width of the connecting groove decreases from the inside to the outside.

4. The probe connection apparatus of claim 3, wherein The connecting block includes: A probe connector is connected to the probe, and the width of the probe connector is less than or equal to the width of the opening of the connector groove; A fixing part is provided, which is connected and fixed to the probe connecting part. The width of the fixing part increases from the junction of the fixing part and the probe connecting part toward the fixing part. The elastic element is provided on the fixing part.

5. The probe connection apparatus of claim 4, wherein The fixing part is provided with a mounting hole, and the elastic element is disposed in the mounting hole.

6. The probe connection apparatus of claim 5, wherein The elastic element includes: A spring, one end of which is connected and fixed to the bottom of the mounting hole; A ball bearing is fixedly connected to one end of a spring that is away from the bottom of the mounting hole.

7. The probe connection apparatus of claim 6, wherein At least half of the ball extends out of the mounting hole.

8. The probe connection apparatus of claim 6, wherein The original length of the spring is equal to the depth of the mounting hole.

9. The probe connection device as described in claim 1, characterized in that, The groove is arc-shaped.

10. A short-circuit testing device for a secondary battery, characterized in that, The secondary battery short-circuit test device uses the probe connection device described in any one of claims 1-9 to connect the probe.

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