Probe type battery performance test tool

Abstract

The utility model discloses a probe type battery performance test tool, which comprises a base for placing a battery, a vertical rod connected with the base, and a pressing plate connected with the vertical rod in a sliding manner, the pressing plate is provided with a long groove, and a probe assembly is connected in the long groove in a sliding manner. The probe assembly is driven by the liftable pressing plate to move up and down to be in contact with a battery pole placed on the base, so that subsequent battery performance testing is facilitated, additional welding of a tab on a battery is not needed, and battery scrapping caused by battery damage is avoided.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production technology, and in particular to a probe-type battery performance testing fixture. Background Technology

[0002] In the research, development, trial production, and manufacturing of lithium batteries, electrical performance testing is required. This testing evaluates the battery's capacity, internal resistance, safety, and cycle life to ensure compliance with national standards and customer requirements. Current testing methods involve connecting probes to the battery terminals, requiring the welding of metal tabs to the terminals before bolting the test leads to them. However, this method has drawbacks: the need for welding tabs before testing, the inability to use the battery after testing, and the resulting scrapping rate increase; there is also a risk of short circuits due to operator error. For example, if an employee accidentally touches a wrench to the opposite terminal during connection, the positive and negative terminals will be short-circuited, posing a fire risk; furthermore, the original method provides low-precision, error-prone battery data. Therefore, this invention focuses on providing an efficient, labor-saving, safe, easy-to-operate, and simple square battery testing fixture or technical solution. Utility Model Content

[0003] The purpose of this invention is to provide a probe-type battery performance testing fixture, which uses a probe assembly that can move up and down to connect to the battery. The assembly and disassembly operations are quick and easy, and there is no need to weld tabs to the battery terminals.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] This utility model discloses a probe-type battery performance testing fixture, including a base for placing the battery, a vertical rod connected to the base, and a pressure plate slidably connected to the vertical rod. The pressure plate has an elongated groove, in which a probe assembly is slidably connected.

[0006] A further embodiment: The probe assembly includes a guide that is slidably connected to the long slot and a probe body connected to the bottom of the guide.

[0007] A further embodiment: the guide includes a threaded sleeve that slides with the long groove, a bolt that is threadedly connected to the threaded sleeve, and the probe body is fixedly connected to the bolt.

[0008] A further embodiment: the probe assembly also includes a metal pressure block located at the bottom of the probe body, the metal pressure block having a countersunk hole for accommodating the probe body; the metal pressure block having an interface for connecting test leads.

[0009] A further solution includes a clamping mechanism located at the bottom of the pressure plate. The clamping mechanism includes a fixed block and a movable block that clamp the two top corners of the battery respectively. The contact surfaces of the fixed block and the movable block with the battery are provided with slots for accommodating the battery.

[0010] A further solution: The pressure plate has an oblong hole, and the movable stop block is connected to the pressure plate by a fastener passing through the oblong hole.

[0011] A further solution: The base has a stepped groove inside.

[0012] A further solution: the upright is a lead screw, and the pressure plate is threadedly connected to the lead screw.

[0013] A further option includes a guide rod connected between the pressure plate and the base, wherein the guide rod and the pressure plate are slidably connected via a linear bearing.

[0014] A further solution: a limiting baffle is provided at the top of the guide rod.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention uses a liftable pressure plate to move the probe assembly up and down, so that it contacts the battery terminals placed on the base. This facilitates subsequent battery performance testing and eliminates the need to weld additional tabs onto the battery. This not only reduces testing procedures but also avoids battery damage and scrapping.

[0017] The battery is effectively secured by the stepped grooves on the base and the clamping mechanism, ensuring its proper positioning whether the test fixture is upright or lying flat. The detachable design of the metal pressure block and probe body not only facilitates the assembly of test leads but also increases the battery's stress area, preventing crush damage.

[0018] The probe assembly can adjust the lateral displacement according to different battery specifications, and the movable stop can also effectively adjust the distance between itself and the fixed stop, adapting to the clamping of batteries of different specifications, and has strong versatility. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present utility model;

[0020] Figure 2 This is a top view of the present invention;

[0021] In the diagram: 1-base, 2-upright rod, 3-pressure plate, 31-long groove, 32-waist-shaped hole, 4-probe assembly, 41-guide, 411-threaded sleeve, 412-bolt, 42-probe body, 43-metal pressure block, 44-spring, 5-clamping mechanism, 51-fixed stop, 52-movable stop, 53-slot, 6-fastener, 7-guide rod, 8-linear bearing, 9-battery, 10-test line, 11-step groove, 12-limiting stop, 13-anti-collision block. Detailed Implementation

[0022] 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.

[0023] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Please see Figures 1-2 In this embodiment, a probe-type battery performance testing fixture includes a base 1 for placing a battery 9, a vertical rod 2 connected to the base 1, and a pressure plate 3 slidably connected to the vertical rod 2. The pressure plate 3 has an elongated groove 31, in which a probe assembly 4 is slidably connected. When the pressure plate 3 presses down, it causes the probe assembly 4 to connect with the terminal post on the battery 9, thereby performing performance testing. The vertical rod 2 is located at the center of the pressure plate 3, with testing positions on both its left and right sides, allowing for simultaneous testing of two batteries.

[0025] Furthermore, the probe assembly 4 includes a guide 41 slidably connected to the elongated slot 31 and a probe body 42 connected to the bottom of the guide 41. The guide 41 slides horizontally back and forth in the elongated slot 31 in a restricted manner, thereby adjusting the lateral displacement of the probe body 42 to facilitate alignment and connection with the battery 9 terminal below.

[0026] Furthermore, the guide 41 includes a threaded sleeve 411 that is slidably connected to the long slot 31, and a bolt 412 that is threadedly connected to the threaded sleeve 411. The probe body 42 is fixedly connected to the bolt 412. The threaded sleeve 411 may be made of plastic and has a groove on its outer side. The groove is engaged with the edge of the long slot 31. The height of the probe body 42 can be adjusted by rotating the bolt 412 to accommodate different battery sizes.

[0027] Furthermore, the probe assembly 4 also includes a metal pressure block 43 located at the bottom of the probe body 42. The metal pressure block 43 has a countersunk hole for accommodating the probe body 42; the metal pressure block 43 also has an interface for connecting the test leads 10. The metal pressure block 43 and the probe body 42 are detachable. When connected, the probe body 42 is aligned with the countersunk hole of the metal pressure block 43. The pressure plate 3 presses down, causing the metal pressure block 43 to press firmly against the end face of the battery 9, thus achieving an electrical connection between the probe body 42 and the battery terminal. The metal pressure block 43 has a large coverage area, increasing the force-bearing area of ​​the battery 9 and preventing damage to the battery surface during pressing. The test leads 10 connected to the metal pressure block 43 are divided into voltage test leads and current test leads. The test leads 10 are electrically connected to the relevant ports of the testing instrument. The test leads 10 are made of copper wire, which has low resistance and low voltage and current loss rate.

[0028] Furthermore, a spring 44 is fitted onto the lower end of the probe body 1, and the upper end of the spring 44 is fixedly connected to the threaded sleeve 411. When the countersunk hole of the metal pressure block 43 is connected to the lower end of the probe body 42, the spring 44 is compressed, which plays a buffering role.

[0029] Furthermore, this testing fixture also includes a clamping mechanism 5 located at the bottom of the pressure plate 3. This clamping mechanism 5 includes a fixed stop 51 and a movable stop 52 that clamp the two top corners of the battery 9 respectively. Both the fixed stop 51 and the movable stop 52 have slots 53 on their contact surfaces with the battery 9 to accommodate it, facilitating the clamping of the battery 9. The bottom of the battery 9 is supported by the base 1, while the two top corners of the battery are fixed by the fixed stop 51 and the movable stop 52, ensuring the stability of the battery 9 during testing. The fixed stop 51 is fixedly connected to the pressure plate 3 and its lateral displacement is not adjustable. The movable stop 52 can slide relative to the pressure plate 3 to adjust its lateral displacement, adjusting it according to the size of the battery 9 to be tested.

[0030] Furthermore, the pressure plate 3 has a waist-shaped hole 32, and the movable stop 52 is connected to the pressure plate 3 by a fastener 6 that passes through the waist-shaped hole 32.

[0031] Furthermore, a stepped groove 11 is provided inside the base 1. The width of each step of the stepped groove 11 is designed according to the width of a conventional battery, so that batteries of different sizes can be effectively fixed.

[0032] Furthermore, the upright 2 is a lead screw, and the pressure plate 3 is threadedly connected to the lead screw. The height of the pressure plate 3 can be adjusted and fixed by rotating the lead screw.

[0033] Furthermore, this test fixture also includes a guide rod 7 connected between the pressure plate 3 and the base 1. The guide rod 7 and the pressure plate 3 are slidably connected via a linear bearing 8. There are two guide rods 7, located on both sides of the upright 2, to increase the stability of the overall structure. At the same time, the linear bearing 8 reduces the friction between the pressure plate 3 and the guide rod 7 when the pressure plate 3 moves up and down.

[0034] Furthermore, a limiting baffle 12 is provided at the top of the guide rod 7 to prevent the pressure plate 3 from being lifted too high and falling out of the rod, and to prevent the balls inside the linear bearing 8 from falling out.

[0035] Furthermore, the bottom of the upright 2 is provided with a crash block 13, which is a rubber ring that acts as a buffer and support when the pressure plate 3 falls accidentally.

[0036] In use, first adjust the upright rod 2 to fix the pressure plate 3 in a higher position, and then place the battery 9 to be tested on the base 1. Then, adjust the upright rod 2 to move the pressure plate 3 downward. At the same time, place the metal pressure block 43, which is pre-connected with the test lead 10, on the upper surface of the battery 9, so that the downward-moving probe body 42 is aligned with the countersunk hole of the pressure block 43. When the probe body 42 is pressed against the countersunk hole, the fixed stop 51 and the movable stop 52 are naturally clamped on both sides of the battery 9. The installation is then complete, and testing can be performed.

[0037] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0038] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. A probe-type battery performance testing fixture, characterized in that, It includes a base (1) for placing a battery (9), a pole (2) connected to the base (1), and a pressure plate (3) slidably connected to the pole (2). The pressure plate (3) has an elongated groove (31) and a probe assembly (4) is slidably connected in the elongated groove (31).

2. The probe-type battery performance testing fixture according to claim 1, characterized in that, The probe assembly (4) includes a guide (41) slidably connected to the long slot (31) and a probe body (42) connected to the bottom of the guide (41).

3. The probe-type battery performance testing fixture according to claim 2, characterized in that, The guide (41) includes a threaded sleeve (411) that is slidably connected to the long groove (31) and a bolt (412) that is threadedly connected to the threaded sleeve (411). The probe body (42) is fixedly connected to the bolt (412).

4. The probe-type battery performance testing fixture according to claim 2, characterized in that, The probe assembly (4) also includes a metal pressure block (43) located at the bottom of the probe body (42), the metal pressure block (43) having a countersunk hole for accommodating the probe body (42); the metal pressure block (43) having an interface for connecting the test lead (10).

5. The probe-type battery performance testing fixture according to claim 1, characterized in that, It also includes a clamping mechanism (5) located at the bottom of the pressure plate (3). The clamping mechanism (5) includes a fixed stop (51) and a movable stop (52) that clamp the two top corners of the battery (9) respectively. The contact surfaces of the fixed stop (51) and the movable stop (52) with the battery (9) are provided with slots (53) for accommodating the battery (9).

6. The probe-type battery performance testing fixture according to claim 5, characterized in that, The pressure plate (3) has a waist-shaped hole (32), and the movable stop (52) is connected to the pressure plate (3) by a fastener (6) that passes through the waist-shaped hole (32).

7. The probe-type battery performance testing fixture according to claim 1, characterized in that, The base (1) has a stepped groove (11) inside.

8. The probe-type battery performance testing fixture according to claim 1, characterized in that, The upright (2) is a lead screw, and the pressure plate (3) is threadedly connected to the lead screw.

9. The probe-type battery performance testing fixture according to claim 1, characterized in that, It also includes a guide rod (7) connecting the pressure plate (3) and the base (1), the guide rod (7) being slidably connected to the pressure plate (3) via a linear bearing (8).

10. The probe-type battery performance testing fixture according to claim 9, characterized in that, The guide rod (7) is provided with a limiting baffle (12) at its top end.

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