OT terminal connection structure and battery detection device

Abstract

The utility model provides an OT terminal connection structure and a battery detection device, comprising OT terminals, a locking frame and a locking nut, the OT terminals are respectively sleeved on a positive pole and a negative pole of a battery; the locking frame is connected with the two OT terminals so as to relatively limit the two OT terminals; and the locking nuts are in threaded connection with the positive pole and the negative pole of the battery so as to compress the OT terminal. According to the invention, the two OT terminals are connected by arranging the locking frame, so that the two OT terminals are mutually limited after sleeving the battery pole, and then the OT terminals do not rotate when the locking nut is installed and the fastening degree of the locking nut is adjusted, so that the installation stability of the OT terminals and the detection wire harness can be ensured, and the detection efficiency is improved. And the accuracy of a detection result is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of battery detection, and in particular to an OT terminal connection structure and a battery detection device. Background Art

[0002] With the rapid development of electric vehicles, portable electronic devices, and energy storage systems, lithium-ion batteries, as their core power source, have become increasingly important for accurate performance evaluation and testing. However, during lithium-ion battery testing, due to a variety of factors, test results often contain errors that can mislead product design, production, and performance optimization decisions. Contact resistance is a key factor in lithium-ion battery testing and evaluation; its presence and magnitude directly impact the accuracy and reliability of test results.

[0003] The existing utility model patent, authorized with publication number CN202794236U, discloses a battery formation detection connector, belonging to the field of battery detection technology. It includes an OT terminal, a voltage detection wire, and a formation nut. The formation nut has a socket, and the voltage detection wire ends with a banana plug. The OT terminal is connected to the battery post via the formation nut, and the banana plug is connected to the battery post via the socket on the formation nut.

[0004] As in the above technical solution, voltage detection is performed by connecting the OT terminal to the battery pole; this method can also be used when performing resistance detection; because the OT terminal is sleeved on the pole, when adjusting the tightness of the nut, it is easy to cause the OT terminal to rotate, resulting in affecting the stability of the wiring, which in turn affects the progress of the detection work. Utility Model Content

[0005] In view of this, the present invention proposes an OT terminal connection structure and a battery detection device in which the nut adjustment will not cause the OT terminal to rotate and the connection structure is stable, so as to solve the problem that the existing OT terminal is prone to rotation when the nut is rotated, affecting the wiring stability.

[0006] The technical solution of the present utility model is achieved as follows:

[0007] On the one hand, the utility model provides an OT terminal connection structure for battery resistance detection, including an OT terminal, a locking frame and a locking nut, wherein:

[0008] There is one OT terminal on each of the positive and negative poles of the battery;

[0009] The locking frame is connected to the two OT terminals to limit the relative positions of the two OT terminals;

[0010] The locking nut is threadedly connected to the positive and negative electrodes of the battery to tighten the OT terminal.

[0011] On the basis of the above technical solution, preferably, a retaining frame is further included, and the retaining frame is connected to the locking frame and clamps the battery.

[0012] On the basis of the above technical solution, preferably, the locking frame includes a plate frame, a clamping plate and a limiting rod, wherein,

[0013] Limiting slots are provided at both ends of the plate frame to form four splints;

[0014] The OT terminal is snapped into the limit slot;

[0015] The limiting rod is arranged on one clamping plate and passes through the other clamping plate opposite to it.

[0016] On the basis of the above technical solution, preferably, the locking frame further includes a limit block, which is located in the limit groove and connected to one of the clamping plates, and the limit block is located between the limit rod and the plate frame.

[0017] On the basis of the above technical solution, preferably, a plurality of limit blocks are provided in the limit groove, and the plurality of limit blocks are spaced apart.

[0018] On the basis of the above technical solution, preferably, the limiting rod is arranged on the limiting block.

[0019] On the basis of the above technical solution, preferably, the retainer includes a top plate and a side plate, wherein:

[0020] The top plate is pressed on the battery and is provided with a through hole;

[0021] Two side plates are provided on the side of the top plate, and the two side plates clamp the battery.

[0022] On the basis of the above technical solution, preferably, the OT terminal includes a first connecting portion, a second connecting portion and a third connecting portion connected to each other, wherein:

[0023] The first connecting portion is sleeved on the battery pole;

[0024] The second connecting portion is clamped with the locking frame;

[0025] The third connecting portion is used to connect the detection harness.

[0026] On the other hand, the present invention provides a battery detection device, including the above-mentioned OT terminal connection structure.

[0027] On the basis of the above technical solution, preferably, a resistance meter is further included, and the resistance meter is electrically connected to the OT terminal.

[0028] Compared with the prior art, the OT terminal connection structure and battery detection device of the present invention have the following advantages:

[0029] Beneficial effects:

[0030] (1) The two OT terminals are connected by setting a locking frame. After the two OT terminals are put on the battery pole, they will limit each other. When the locking nut is installed and the tightness of the locking nut is adjusted, the OT terminals will not rotate, thereby ensuring the stability of the installation of the OT terminals and the detection harness, and thus ensuring the accuracy of the detection results;

[0031] (2) By providing a retaining frame, the locking frame and the battery can be further fixed by the retaining frame, thereby ensuring the stability of the OT terminal installation;

[0032] (3) The locking frame is connected to the OT terminal through the limit slot and is limited by the limit block. By setting multiple limit blocks in the limit slot of the locking frame, multiple limit spaces are formed, which can easily adjust the distance between the two OT terminals and thus be suitable for different types of battery testing; BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 This is a front view of the locking frame of the OT terminal connection structure of the present invention;

[0035] Figure 2 This is a three-dimensional diagram of the OT terminal connection structure of the present invention;

[0036] Figure 3 This is a front view of the OT terminal connection structure of the present utility model;

[0037] Figure 4 This is an exploded view of the OT terminal connection structure of the present utility model;

[0038] Figure 5 A three-dimensional diagram of an OT terminal of the OT terminal connection structure of the present invention;

[0039] Figure 6 This is a front view of the OT terminal connection structure of the present invention with multiple limit slots;

[0040] Figure 7This is a front view of the limit rod of the OT terminal connection structure of the utility model being set on the limit block;

[0041] In the figure: 1. OT terminal; 11. First connecting part; 12. Second connecting part; 13. Third connecting part; 2. Locking frame; 21. Plate frame; 22. Clamping plate; 23. Limiting rod; 24. Limiting block; 201. Limiting groove; 3. Locking nut; 4. Retaining frame; 41. Top plate; 42. Side plate; 401. Through hole; 100. Battery. DETAILED DESCRIPTION

[0042] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0043] like Figures 1 to 7 As shown, the OT terminal connection structure of the present invention includes an OT terminal 1, a locking frame 2, a locking nut 3 and a retaining frame 4, which is used for testing the battery 100;

[0044] The battery detection device of the present invention includes the above-mentioned OT terminal connection structure.

[0045] Among them, the OT terminal 1 is a wiring terminal, which is usually used to connect wires to electrical equipment or other conductors.

[0046] like Figures 2-4 As shown, an OT terminal 1 is provided on each of the positive and negative poles of the battery 100; a locking frame 2 is connected to the two OT terminals 1 to limit the relative position of the two OT terminals 1; a locking nut 3 is threadedly connected to the positive and negative poles of the battery 100 to tighten the OT terminals 1;

[0047] As in the above structure, when testing, the OT terminal 1 is used to connect the test harness to detect the resistance of the battery 100;

[0048] During installation, install an OT terminal 1 on each of the positive and negative poles of the battery 100, and then use the locking bracket 2 to connect the two OT terminals 1. The two OT terminals 1 can be relatively limited by the poles of the battery 100. Finally, connect the locking nut 3 to the poles to lock the OT terminals 1.

[0049] Since the OT terminal 1 is limited by the locking frame 2, the OT terminal 1 will not rotate when installing the locking nut 3 or adjusting the tightness of the locking nut 3, thereby ensuring the stability of the installation of the OT terminal 1 and the detection harness, and further ensuring the accuracy of the test results.

[0050] like Figure 1 As shown, the locking frame 2 includes a plate frame 21, a clamping plate 22, and a limiting rod 23. The plate frame 21 has limiting grooves 201 at both ends to form four clamping plates 22. The OT terminal 1 is clamped in the limiting grooves 201. The limiting rod 23 is provided on one clamping plate 22 and passes through the other clamping plate 22.

[0051] As shown in the above structure, when setting up the OT terminal connection structure, the OT terminal 1 can be first clamped into the limiting groove 201 of the board frame 21, and then the limiting rod 23 can be passed through an opposite clamping plate 22. In this way, the ends of the two clamping plates 22 on one side of the board frame 21 are closed, and a fixed connection with the OT terminal can be achieved.

[0052] like Figure 1 As shown, the locking frame 2 further includes a limit block 24, which is located in the limit groove 201 and connected to one of the clamping plates 22. The limit block 24 is located between the limit rod 23 and the plate frame 21;

[0053] As shown in the above structure, in order to further ensure the stability of the OT terminal 1, the OT terminal 1 will not contact the limit rod 23 after being clamped by the locking frame 2, but will be limited by the limit block 24. This can make the OT terminal 1 fit tightly with the locking frame 2 and will not loosen.

[0054] like Figure 6 As shown, a plurality of limit blocks 24 are provided in the limit slot 201, and the plurality of limit blocks 24 are spaced apart;

[0055] As shown in the above structure, the locking frame 2 is clamped to the OT terminal 1 through the limiting groove 201, and is limited by the limiting block 24. In this way, by setting multiple limiting blocks 24 in the limiting groove 201 of the locking frame 2, multiple limiting spaces are formed, which can conveniently adjust the distance between the two OT terminals 1, and thus be suitable for battery detection of different models.

[0056] In some embodiments, the pole of the battery 100 is connected to the busbar, and the OT terminal 1 only needs to be connected to the busbar.

[0057] In some embodiments, as Figure 7 As shown, the limiting rod 23 is arranged on the limiting block 24; thereby, the length of the locking frame 2 can be shortened, ensuring a more compact structure.

[0058] like Figure 5As shown, the OT terminal 1 includes a first connecting portion 11, a second connecting portion 12 and a third connecting portion 13 connected to each other, wherein the first connecting portion 11 is sleeved on the pole of the battery 100; the second connecting portion 12 is clamped with the locking frame 2; and the third connecting portion 13 is used to connect the detection harness;

[0059] As shown in the above structure, the OT terminal 1 is divided into three parts, wherein the first connecting part 11 is opened to fit the pole of the battery 100, the second connecting part 12 is clamped with the locking frame 2, and the third connecting part 13 is bent to clamp the detection harness.

[0060] like Figures 2-4 As shown, the retaining frame 4 is connected to the locking frame 2 and clamps the battery 100;

[0061] As in the above structure, in order to further ensure the stability of the locking frame 2 and the OT terminal 1 relative to the battery 100, the locking frame 2 and the battery 100 are connected through the retaining frame 4 to ensure structural stability.

[0062] like Figure 4 As shown, the holder 4 includes a top plate 41 and side plates 42, wherein the top plate 41 is pressed on the battery 100 and has a through hole 401; two side plates 42 are provided on the side of the top plate 41, and the two side plates 42 clamp the battery 100;

[0063] As shown in the above structure, the holder 4 is composed of a top plate 41 and a side plate 42, and its overall structure is n-shaped, so that it is easy to snap onto the battery 100, and the battery 100 can be clamped and connected using the side plate 42;

[0064] Specifically, the top plate 41 is connected to the plate frame 21 of the locking frame 2 in a detachable manner, for example, by using detachable fasteners such as bolts, so that the locking frame 2 can be easily replaced when it is damaged.

[0065] The battery detection device of the present invention further includes an ohmmeter, which is electrically connected to the OT terminal 1;

[0066] As shown in the above structure, the battery testing device detects the effect of the tightness of the OT terminal on the resistance during testing;

[0067] During the test, the locking nut 3 is adjusted with a torque wrench under the same charge and discharge current conditions to adjust the tightness of the connection between the OT terminal 1 and the pole of the battery 100. The resistance meter is used to record the maximum contact resistance under different torque conditions. Then, the corresponding test system is used to measure the battery temperature, capacity and other parameters, and then the corresponding relationship between different contact resistances and battery capacity and temperature rise is obtained.

[0068] Specific implementation steps:

[0069] First, fix the two OT terminals 1 relative to each other through the locking frame 2, then connect the locking frame 2 to the retaining frame 4, and snap the retaining frame 4 onto the battery 100. Connect the OT terminal 1 to the pole of the battery 100, and connect the detection harness clamped by the OT terminal 1 to the test system, and then you can start testing.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An OT terminal connection structure for detecting resistance of a battery (100), characterized in that: It comprises an OT terminal (1), a locking frame (2) and a locking nut (3), wherein: The OT terminal (1) is provided on each of the positive electrode column and the negative electrode column of the battery (100); The locking frame (2) is connected to the two OT terminals (1) to limit the relative positions of the two OT terminals (1); The locking nut (3) is connected to the positive pole and the negative pole of the battery (100) through threads to compress the OT terminal (1).

2. The OT terminal connection structure according to claim 1, wherein: It also includes a retaining frame (4), which is connected to the locking frame (2) and is clamped to the battery (100).

3. The OT terminal connection structure according to claim 2, wherein: The locking frame (2) comprises a plate frame (21), a clamping plate (22) and a limiting rod (23), wherein: Limiting grooves (201) are provided at both ends of the plate frame (21) to form four clamping plates (22); The OT terminal (1) is clamped in the limiting groove (201); The limiting rod (23) is arranged on one of the clamping plates (22) and passes through the other opposite clamping plate (22).

4. The OT terminal connection structure according to claim 3, wherein: The locking frame (2) further comprises a limiting block (24), the limiting block (24) being located in the limiting groove (201) and connected to one of the clamping plates (22), and the limiting block (24) being located between the limiting rod (23) and the plate frame (21).

5. The OT terminal connection structure according to claim 4, wherein: A plurality of the limiting blocks (24) are provided in the limiting groove (201), and the plurality of limiting blocks (24) are spaced apart.

6. The OT terminal connection structure according to claim 4 or 5, characterized in that: The limiting rod (23) is arranged on the limiting block (24).

7. The OT terminal connection structure according to any one of claims 2 to 5, wherein: The retaining frame (4) includes a top plate (41) and a side plate (42), wherein: The top plate (41) is pressed onto the battery (100), and a through hole (401) is formed in the top plate (41); Two side plates (42) are provided on the side surfaces of the top plate (41), and the two side plates (42) clamp the battery (100).

8. The OT terminal connection structure according to any one of claims 1 to 5, wherein: The OT terminal (1) comprises a first connecting portion (11), a second connecting portion (12) and a third connecting portion (13) connected to each other, wherein: The first connecting portion (11) is sleeved on the pole of the battery (100); The second connecting portion (12) is engaged with the locking frame (2); The third connecting portion (13) is used for connecting a detection harness.

9. A battery detection device, characterized in that: The invention comprises the OT terminal connection structure according to any one of claims 1 to 5.

10. The battery testing device according to claim 9, wherein: It also includes a resistance meter, which is electrically connected to the OT terminal (1).

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