Auxiliary connecting device for preventing internal resistance from increasing

Abstract

The utility model discloses an auxiliary connecting device for preventing internal resistance from increasing. The auxiliary connecting device comprises a first telescopic rod and a second telescopic rod arranged side by side with the first telescopic rod, the telescopic connecting rod B is rotationally mounted on the front surface of the first telescopic rod, and the other end of the telescopic connecting rod B is rotationally matched with the second telescopic rod; the telescopic connecting rod A is rotationally mounted on the front surface of the telescopic connecting rod B, and the two ends of the telescopic connecting rod A are rotationally matched with the first telescopic rod and the second telescopic rod correspondingly; the hoop is arranged on the first telescopic rod so as to fix the current line; adjustment can be conveniently carried out according to the position of the terminal at the lower end of the current line, the current line is fixed on the device after a proper position is fixed, and the pulling force of the current line on the battery tab can be transferred to the device, so that the situation that the connection between the current line and the tab is loosened due to the pulling force of the current line due to long-time testing is avoided; and finally, the contact resistance is increased.

Description

Technical Field

[0001] This utility model specifically relates to an auxiliary connection device for preventing an increase in internal resistance. Background Technology

[0002] During long-term high-current battery testing in the laboratory, the current wires are often thick and stiff due to the large load current, making them difficult to bend. During long-term testing, because the current wire terminals cannot be perfectly parallel to the battery's aluminum tabs, the connection loosens over time due to the current wire's own force or external pulling. This reduces the contact area between the tabs and terminals, leading to increased contact resistance and affecting data accuracy. Therefore, we propose an auxiliary connection device to prevent this increase in internal resistance. Utility Model Content

[0003] The purpose of this utility model is to provide an auxiliary connection device to prevent the increase of internal resistance, so as to solve the problem mentioned in the background art that when the existing current line is loosened by accidental pulling force, the contact area between the electrode and the terminal is reduced, resulting in an increase of internal resistance.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an auxiliary connection device for preventing an increase in internal resistance, comprising:

[0005] The first telescopic pole and the second telescopic pole arranged side by side with the first telescopic pole;

[0006] Telescopic connecting rod B is rotatably mounted on the front surface of the first telescopic rod, and the other end of the telescopic connecting rod B is rotatably engaged with the second telescopic rod;

[0007] Telescopic connecting rod A is rotatably mounted on the front surface of telescopic connecting rod B, and both ends of telescopic connecting rod A are rotatably engaged with the first telescopic rod and the second telescopic rod, respectively.

[0008] A clamp is installed on the first telescopic rod to fix the current line.

[0009] The parallel design allows for adjustment of the distance between the first and second telescopic rods to maintain stability. Subsequently, the clamps are matched and connected to the current lines to ensure the stability of the current lines and prevent them from loosening due to pulling.

[0010] Preferably, four clamps are provided, with every two clamps symmetrically distributed.

[0011] This facilitates better connection and compatibility with current lines.

[0012] Preferably, an adjustment switch for adjusting the extension amount is provided at the middle of the front surface of the first telescopic rod.

[0013] It allows for easy adjustment of the telescopic length.

[0014] Preferably, a transverse telescopic rod is rotatably mounted on the top end of the first telescopic rod, and the other end of the transverse telescopic rod is rotatably engaged with the second telescopic rod, wherein the first telescopic rod, the second telescopic rod, and the transverse telescopic rod form a "door" shape.

[0015] This ensures that the distance between the first and second telescopic poles remains stable after adjustment.

[0016] Preferably, the telescopic connecting rod A and the telescopic connecting rod B intersect to form an "X" shape.

[0017] This allows for better control over changes in the distance between the first and second telescopic poles.

[0018] Preferably, the second telescopic rod is the same in shape and size as the first telescopic rod.

[0019] It is easy to assemble and also easy to connect to two current lines later.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] This patent allows for easy adjustment based on the position of the lower terminal of the current line. After fixing the current line to the appropriate position, the current line can be fixed to this device, thereby transferring the pulling force of the current line on the battery tab to this device. This avoids the connection between the current line and the tab becoming loose due to the pulling force of the current line during long-term testing, which would ultimately lead to an increase in contact resistance. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the current line fixing structure of this utility model.

[0024] In the diagram: 1. First telescopic rod; 2. Second telescopic rod; 3. Adjustment switch; 4. Clamp; 5. Lateral telescopic rod; 6. Telescopic connecting rod A; 7. Telescopic connecting rod B; 8. Current line; 9. Terminal. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1 , Figure 2This utility model provides a technical solution: an auxiliary connection device for preventing an increase in internal resistance, comprising:

[0027] The first telescopic rod 1 and the second telescopic rod 2 arranged side by side with the first telescopic rod 1 facilitate the subsequent matching and connection of the clamp 4 and the current line 8 through the parallel design;

[0028] Telescopic connecting rod B7 is rotatably mounted on the front surface of the first telescopic rod 1, and the other end of the telescopic connecting rod B7 is rotatably engaged with the second telescopic rod 2;

[0029] Telescopic connecting rod A6 is rotatably mounted on the front surface of telescopic connecting rod B7, and both ends of telescopic connecting rod A6 are rotatably engaged with the first telescopic rod 1 and the second telescopic rod 2 respectively, so as to ensure that the distance between the first telescopic rod 1 and the second telescopic rod 2 remains stable after adjustment;

[0030] The clamp 4 is set on the first telescopic rod 1 to fix the current line, so as to facilitate quick connection with the current line 8 and thus fix the current line 8 to prevent the current line 8 from loosening due to external pulling.

[0031] In this embodiment, preferably, four clamps 4 are provided, with each pair of clamps 4 symmetrically distributed, which facilitates better connection and cooperation with the current line 8.

[0032] In this embodiment, preferably, an adjustment switch 3 for adjusting the extension amount is provided in the middle of the front surface of the first telescopic rod 1, so as to facilitate the adjustment of the telescopic length.

[0033] In this embodiment, preferably, a transverse telescopic rod 5 is rotatably installed at the top of the first telescopic rod 1, and the other end of the transverse telescopic rod 5 is rotatably engaged with the second telescopic rod 2. The first telescopic rod 1, the second telescopic rod 2 and the transverse telescopic rod 5 form a "door" shape, which makes it easier to ensure that the distance between the first telescopic rod 1 and the second telescopic rod 2 remains stable after adjustment.

[0034] In this embodiment, preferably, the telescopic connecting rod A6 and the telescopic connecting rod B7 intersect to form an "X" shape, which facilitates better restriction of changes in the distance between the first telescopic rod 1 and the second telescopic rod 2.

[0035] In this embodiment, preferably, the second telescopic rod 2 and the first telescopic rod 1 are of the same shape and size.

[0036] The working principle and usage process of this utility model are as follows: During use, based on the distance between the two terminals 9 at the lower ends of the two current lines 8, the lengths of the first telescopic rod 1 and the second telescopic rod 2 are adjusted by loosening the adjusting switch 3, thereby causing the telescopic connecting rod A6 and the telescopic connecting rod B7 to rotate, changing the length of the transverse telescopic rod 5. Ultimately, the distance between the first telescopic rod 1 and the second telescopic rod 2 is matched with the spacing between the two current lines 8, so that the multiple clamps 4 on the first telescopic rod 1 and the second telescopic rod 2 are respectively secured to the current lines 8. The multiple adjusting switches 3 are tightened to fix the shape of the entire auxiliary connection device, thereby making it easier to keep the position of the current lines 8 unchanged. At this time, the terminals 9 of the current lines 8 are then fastened to the aluminum tabs of the battery with bolts and nuts. Thus, the tensile force that should be applied between the terminals 9 and the tabs of the current lines 8 can be transferred to the auxiliary connection through the auxiliary connection, thereby avoiding the phenomenon that the fasteners loosened due to the tensile force of the current lines during long-term testing, resulting in increased contact resistance and inaccurate test data.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary connection device for preventing an increase in internal resistance, characterized in that, include: The first telescopic rod (1) and the second telescopic rod (2) arranged side by side with the first telescopic rod (1); Telescopic connecting rod B (7) is rotatably mounted on the front surface of the first telescopic rod (1), and the other end of the telescopic connecting rod B (7) is rotatably engaged with the second telescopic rod (2); Telescopic connecting rod A (6) is rotatably mounted on the front surface of telescopic connecting rod B (7), and the two ends of the telescopic connecting rod A (6) are respectively rotatably engaged with the first telescopic rod (1) and the second telescopic rod (2); The clamp (4) is installed on the first telescopic rod (1) to fix the current line.

2. The auxiliary connection device for preventing increased internal resistance according to claim 1, characterized in that: There are four clamps (4), and every two clamps (4) are symmetrically distributed.

3. The auxiliary connection device for preventing increased internal resistance according to claim 1, characterized in that: An adjustment switch (3) for adjusting the elongation is provided in the middle of the front surface of the first telescopic rod (1).

4. The auxiliary connection device for preventing increased internal resistance according to claim 1, characterized in that: A transverse telescopic rod (5) is rotatably installed at the top of the first telescopic rod (1), and the other end of the transverse telescopic rod (5) is rotatably engaged with the second telescopic rod (2). The first telescopic rod (1), the second telescopic rod (2) and the transverse telescopic rod (5) form a "door" shape.

5. The auxiliary connection device for preventing increased internal resistance according to claim 1, characterized in that: The telescopic connecting rod A (6) and the telescopic connecting rod B (7) intersect to form an "X" shape.

6. The auxiliary connection device for preventing increased internal resistance according to claim 1, characterized in that: The second telescopic rod (2) is the same in shape and size as the first telescopic rod (1).

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