Test fixture for flexible package battery

Abstract

The utility model relates to the technical field of battery testing, in particular to a flexible package battery testing clamp which comprises a rack, a motor is installed on the outer wall of one side of one side of the top of the rack, a transmission wheel set is installed on the inner wall of one side of the top of the rack, and one end of an output shaft of the motor is fixedly connected with the inner wall of one side of the transmission wheel set through a coupler. First bidirectional screws are fixedly connected to the inner walls of the two sides of the other side of the transmission wheel set, clamping plates are connected to the outer walls of the two sides of the first bidirectional screws through threads, first springs are arranged on the outer walls of the other sides of the clamping plates, and first buffer plates are fixedly connected to the outer walls of the other sides of the first springs. The first spring and the second spring buffer the battery to ensure the safety of the battery, the battery can be clamped from four faces at the same time, the stability is higher, the two clamping structures can push the battery to the middle position to be clamped and fixed, the battery can be conveniently and accurately tested by the testing structure at the center position, and the testing efficiency is improved. And the test efficiency of the flexible package battery is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery testing, in particular to a testing fixture for soft-packaged batteries. Background Art

[0002] In the process of evaluating battery performance, the change of AC internal resistance is also a key focus, which has a significant impact on battery performance. Usually, an internal resistance meter is used to test the AC internal resistance of soft-pack lithium-ion batteries. The two probes of the internal resistance meter contact the positive and negative ears respectively. When testing soft-pack lithium-ion batteries, they need to be clamped and fixed.

[0003] After searching, the existing patent publication number is CN218180905U, which is a soft-package lithium-ion battery internal resistance test fixture. Through the interaction between the threaded rod and the connecting rod, the driving member drives the threaded rod to rotate, thereby driving the connecting rod to move, and then adjusts the position of the two auxiliary plates. The lithium-ion battery to be tested is tightened and fixed, which is conducive to adapting to lithium-ion batteries of different sizes.

[0004] However, the above patent has certain defects. It can only clamp and fix the two sides of the soft-package battery from both sides. The testing stability of the soft-package battery is poor. It is difficult to ensure that the soft-package battery is in the middle position before clamping. It is difficult to accurately test the soft-package battery after clamping, which reduces the testing efficiency of the soft-package battery. Utility Model Content

[0005] In order to solve the above technical problems, the utility model proposes a test fixture for soft-package batteries. When buffer plates one and two come into contact with the battery, springs one and two buffer them to ensure the safety of the battery. The battery can be clamped from four sides at the same time for higher stability, and the two sets of clamping structures can push the battery to the middle position for clamping and fixing, making it convenient for the test structure at the center position to conduct precise testing on it.

[0006] The technical solution to achieve the purpose of the utility model is: a test fixture for soft-packaged batteries, including a frame, a motor is installed on one outer wall of one side of the top of the frame, a transmission wheel group is installed on one inner wall of the top of the frame, one end of the motor output shaft is fixedly connected to the inner wall of one side of the transmission wheel group through a coupling, both inner walls on the other side of the transmission wheel group are fixedly connected to a bidirectional screw rod 1, both outer walls on both sides of the bidirectional screw rod 1 are connected to a clamping plate through threads, a spring is provided on the outer wall on the other side of the clamping plate, and a buffer plate 1 is fixedly connected to the outer wall on the other side of the spring rod 1. The outer wall of one side of the splint is fixedly connected to a bracket, the outer wall of one side of the bracket is provided with a mounting hole, the inner wall of the mounting hole is slidably connected to a two-way screw rod, the outer walls of both sides of the two-way screw rod are connected to a side plate through threads, the outer wall of one side of the two-way screw rod is fixedly connected to a gear, the inner wall of one side of the top of the frame is fixedly connected to a fixing rod, a rack is installed on the top outer wall of the fixing rod, the outer wall of the other side of the side plate is provided with a circular hole, the inner wall of the circular hole is slidably connected to a support rod, and the outer wall of the other side of the support rod is fixedly connected to a buffer plate rod.

[0007] In some embodiments, the outer wall of the support rod is sleeved with a second spring, and the second spring is fixedly connected to the second buffer plate and the side plate.

[0008] In some embodiments, rectangular holes are provided on both outer walls of one side of the splint, and rectangular grooves are provided on both outer walls of the buffer plate 1, and the rectangular holes and the rectangular grooves are adapted to the sizes of the buffer plate 2 and the side plate.

[0009] In some embodiments, the rack is meshed with the gear through teeth, circular grooves are provided on both inner walls of the top of the frame, and the bidirectional screw is slidably connected to the inner walls of the circular grooves.

[0010] In some embodiments, the outer walls of the buffer plate 1 and the buffer plate 2 are both bonded with buffer pads, and the brackets are both U-shaped.

[0011] In some embodiments, the clamping plates are all slidably connected to the inner wall of the frame, a proximity sensor is installed on the outer wall on the other side of the clamping plate, and an alarm is installed on the outer wall on one side of the buffer plate.

[0012] Compared with the prior art, the present invention has the following significant advantages:

[0013] First, the utility model is provided with a frame, a motor, a clamping plate, a buffer plate 1, a side plate, a gear and a rack. When the clamping plate is brought together, the side plate also moves together. Before the buffer plate 1 contacts the soft-package battery, the buffer plate 2 on the side plate contacts the soft-package battery first. When the buffer plate 2 moves together, the battery is pushed to the middle position of the frame, and then the buffer plate 1 is used to clamp the four sides of the soft-package battery in the middle position of the frame. The test fixture can test the battery at the center position of the frame each time. When the buffer plate 1 and the buffer plate 2 contact the battery, the spring 1 and the spring 2 buffer the battery to ensure the safety of the battery. The battery can be clamped from four sides at the same time with higher stability, and the two groups of clamping structures can push the battery to the middle position for clamping and fixing, which is convenient for the test structure at the center position to conduct accurate testing on it, thereby improving the test efficiency of the soft-package battery.

[0014] Second, the utility model is provided with a transmission wheel set and a bidirectional screw rod 1. The use of the transmission wheel set ensures that the two bidirectional screw rods 1 rotate synchronously, driving the clamping plates to move closer or separate, and the movement of the clamping plates is more stable and will not deflect, thereby improving the practicality of the test fixture;

[0015] The invention solves the problems that the two sides of the soft-package battery can only be clamped and fixed from both sides, the test stability of the soft-package battery is poor, it is difficult to ensure that the soft-package battery is located in the middle position before clamping, and it is difficult to accurately test the soft-package battery after clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0017] Figure 1 It is a schematic diagram of the overall structure provided in one embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of a bidirectional screw connection structure provided in one embodiment of the utility model;

[0019] Figure 3 It is a schematic diagram of a splint connection structure provided in one embodiment of the utility model;

[0020] Figure 4 It is a schematic diagram of a bidirectional screw two-connection structure provided in one embodiment of the utility model.

[0021] Description of reference numerals:

[0022] 1. Frame; 2. Motor; 3. Transmission wheel set; 4. Clamp; 5. Two-way screw 1; 6. Bracket; 7. Two-way screw 2; 8. Buffer plate 1; 9. Gear; 10. Side plate; 11. Fixed rod; 12. Rack; 13. Spring 1; 14. Support rod; 15. Spring 2; 16. Buffer plate 2. DETAILED DESCRIPTION

[0023] The utility model is described in detail below, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The utility model provides a test fixture for soft-packaged batteries through improvement. The technical solution of the utility model is: Figure 1-Figure 4 As shown, it includes a frame 1, a motor 2 is installed on one side of the outer wall of the top of the frame 1, a transmission wheel group 3 is installed on one side of the inner wall of the top of the frame 1, one end of the output shaft of the motor 2 is fixedly connected to the inner wall of one side of the transmission wheel group 3 through a coupling, and the inner walls on both sides of the other side of the transmission wheel group 3 are fixedly connected with a bidirectional screw 5, and the outer walls on both sides of the bidirectional screw 5 are connected with a clamping plate 4 through threads, and the outer wall on the other side of the clamping plate 4 is provided with a spring 13, and the outer wall on the other side of the spring 13 is fixedly connected with a buffer plate 8, and the outer wall on one side of the clamping plate 4 is fixedly connected with a support The frame 6 has a mounting hole on one side of the outer wall, and the inner wall of the mounting hole is slidably connected with a bidirectional screw rod 7. The outer walls of both sides of the bidirectional screw rod 7 are threadedly connected with a side plate 10. The outer wall of one side of the bidirectional screw rod 7 is fixedly connected with a gear 9. The inner wall of one side of the top of the frame 1 is fixedly connected with a fixing rod 11, and a rack 12 is installed on the outer wall of the top end of the fixing rod 11. A circular hole is formed on the outer wall of the other side of the side plate 10, and a support rod 14 is slidably connected to the inner wall of the circular hole, and a buffer plate 16 is fixedly connected to the outer wall of the other side of the support rod 14.

[0025] Furthermore, in order to support and buffer the second buffer plate 16 , the outer wall of the support rod 14 is sleeved with a second spring 15 , and the second spring 15 is fixedly connected to the second buffer plate 16 and the side plate 10 .

[0026] Furthermore, in order to ensure that the side panel 10 and the buffer plate 16 can move normally, rectangular holes are opened on both outer walls of one side of the splint 4, and rectangular grooves are opened on both outer walls of the buffer plate 1 8. The rectangular holes and the rectangular grooves are adapted to the sizes of the buffer plate 16 and the side panel 10.

[0027] Furthermore, in order to ensure that the gear 9 can rotate with the movement of the splint 4, the rack 12 is meshed with the gear 9 through the tooth pattern, and circular grooves are provided on the inner walls on both sides of the top of the frame 1, and the bidirectional screw 5 is slidably connected to the inner walls of the circular grooves.

[0028] Furthermore, in order to improve the buffering effect, buffer pads are bonded to the outer walls of the buffer plate 1 8 and the buffer plate 2 16 . The buffer pads are preferably made of rubber material, and the brackets 6 are all U-shaped.

[0029] Furthermore, the clamping plates 4 are all slidably connected to the inner wall of the frame 1, a proximity sensor is installed on the outer wall on the other side of the clamping plates 4, and an alarm is installed on the outer wall on one side of the buffer plate 8.

[0030] The specific working method is as follows: when in use, the soft-package battery to be tested is placed on the rack 1, the motor 2 is activated, and the two bidirectional screw rods 5 are driven to rotate simultaneously through the transmission wheel group 3, the bidirectional screw rod 15 drives the two clamping plates 4 to move together, and the clamping plate 4 drives the bracket 6 to move during the movement, and the gear 9 on the bidirectional screw rod 27 in the bracket 6 also moves on the rack 12 accordingly, the gear 9 drives the bidirectional screw rod 27 to rotate and drives the side plates 10 on both sides to move together, and the side plates 10 also move together when the clamping plates 4 move together, and the buffer plate 16 on the side plate 10 first contacts with the buffer plate 2 16 on the side plate 10 before the buffer plate 8 contacts with the soft-package battery When the soft-package battery contacts and the buffer plate 2 16 approaches, the battery is pushed to the middle position of the rack 1, and then the buffer plate 1 8 is used to clamp the four sides of the soft-package battery in the middle position of the rack 1. The test fixture can test the battery at the center position of the rack 1 each time. When the buffer plate 1 8 and the buffer plate 2 16 contact the battery, the spring 13 and the spring 2 15 buffer it to ensure the safety of the battery, and cooperate with the alarm and the proximity sensor to prevent the battery from being damaged. The use of the transmission wheel group 3 ensures that the two bidirectional screws 1 5 rotate synchronously, driving the clamping plate 4 to move closer or separate, and the movement of the clamping plate 4 is more stable and will not deflect.

[0031] The technical means disclosed in the utility model are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the utility model belong to the common knowledge of those skilled in the art.

Claims

1. A test fixture for a soft-package battery, comprising a frame (1), characterized in that: A motor (2) is installed on one side outer wall of the top side of the frame (1), a transmission wheel group (3) is installed on one side inner wall of the top side of the frame (1), one end of the output shaft of the motor (2) is fixedly connected to the inner wall of one side of the transmission wheel group (3) through a coupling, and both inner walls on the other side of the transmission wheel group (3) are fixedly connected to a bidirectional screw rod (5), and both side outer walls of the bidirectional screw rod (5) are connected to a clamping plate (4) through threads, and a spring (13) is provided on the other side outer wall of the clamping plate (4), and a buffer plate (8) is fixedly connected to the other side outer wall of the spring (13), and one side outer wall of the clamping plate (4) is fixedly connected to a bracket (6). The outer wall of one side of the bracket (6) is provided with a mounting hole, the inner wall of the mounting hole is slidably connected with a bidirectional screw rod (7), the outer walls of both sides of the bidirectional screw rod (7) are connected with a side plate (10) through threads, the outer wall of one side of the bidirectional screw rod (7) is fixedly connected with a gear (9), the inner wall of one side of the top of the frame (1) is fixedly connected with a fixing rod (11), the top outer wall of the fixing rod (11) is installed with a rack (12), the outer wall of the other side of the side plate (10) is provided with a circular hole, the inner wall of the circular hole is slidably connected with a support rod (14), and the outer wall of the other side of the support rod (14) is fixedly connected with a buffer plate (16).

2. A test fixture for a soft package battery according to claim 1, characterized in that: The outer wall of the support rod (14) is sleeved with a second spring (15), and the second spring (15) is fixedly connected to the second buffer plate (16) and the side plate (10).

3. A test fixture for a soft package battery according to claim 1, characterized in that: The outer walls of both sides of one side of the clamping plate (4) are provided with rectangular holes, and the outer walls of both sides of the buffer plate (8) are provided with rectangular grooves. The rectangular holes and the rectangular grooves are compatible with the sizes of the buffer plate (16) and the side plate (10).

4. A test fixture for a soft package battery according to claim 1, characterized in that: The rack (12) is meshed with the gear (9) through tooth patterns, and circular grooves are provided on the inner walls on both sides of the top of the frame (1), and the bidirectional screw rod (5) is slidably connected to the inner walls of the circular grooves.

5. A test fixture for a soft package battery according to claim 1, characterized in that: The outer walls of the buffer plate 1 (8) and the buffer plate 2 (16) are both bonded with buffer pads, and the brackets (6) are both U-shaped.

6. A test fixture for a soft package battery according to claim 1, characterized in that: The clamping plates (4) are all slidably connected to the inner wall of the frame (1), a proximity sensor is installed on the outer wall of the other side of the clamping plates (4), and an alarm is installed on the outer wall of one side of the buffer plate (8).

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