Tab-free battery test tool

Abstract

The utility model discloses a tab-free battery testing tool, which belongs to the field of battery testing, solves the problem that the conventional battery testing tool cannot be matched with a tab-free battery for testing, and comprises an outer shell, a detection battery, a detection host, a right connecting plate and a left connecting block, a detection battery is arranged in the outer shell, a detection host is arranged on the side surface of the outer shell, a right connecting plate is fixedly arranged at the position, on the right side of the detection battery, in the outer shell, and a left connecting block is slidably arranged at the position, on the left side of the detection battery, in the outer shell. And by utilizing the distribution of electrode points in the pole pieces in the two groups of connecting plates, the connecting plates can be better connected with the whole tabs at the end parts of the battery, the circuit transmission distance is shortened, and the resistance of the whole circuit path is reduced, so that the working quality of the equipment is improved, and the stability of the equipment during operation is enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of battery testing, specifically relating to a tabless battery testing fixture. Background Technology

[0002] Tabs are a component of pouch lithium-ion batteries. Batteries have positive and negative electrodes, and tabs are the metal conductors that lead the positive and negative electrodes out of the battery cell; they are the contact points during charging and discharging. Tabs can be classified as tabless-free, single-tab, bi-tab, multi-tab, and all-tab. Chinese utility model patent CN208399655U discloses a battery testing fixture, which includes a mounting base, a lifting mechanism, a positive contact electrode, and a negative contact electrode. The lifting mechanism is mounted on the mounting base and can move up and down relative to it. The positive and negative contact electrodes are connected to the lifting mechanism and spaced apart from each other. The lifting mechanism is arranged to drive the positive and negative contact electrodes to press against the electrodes of the battery under test.

[0003] The above design, through the cooperation of multiple components, can quickly and stably test batteries. However, when testing tabless batteries, the "tabless" battery uses the entire current collector tail as the tab through a clever structural design. In this design, the positive and negative electrodes cannot fully and stably make full contact with the current collector tail of the tabless battery, resulting in the electrode contact points of the tabless not being able to make contact with the positive and negative electrode plates, affecting the normal use of the tabless battery itself and increasing the resistance generated during testing. Therefore, we propose a tabless battery testing fixture. Utility Model Content

[0004] The purpose of this invention is to provide a tabless battery testing fixture to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tabless battery testing fixture, comprising a housing, a test battery, a test host, a right connecting plate, and a left connecting block. The housing has a right connecting plate and a left connecting block at both ends. The test battery is positioned between the right connecting plate and the left connecting block. A test host electrically connected to the test battery is located on one side of the housing. The right connecting plate includes an electrode assembly, a limiting base plate, and a insertion hole. The electrode assembly is fixedly installed at one end inside the housing. The limiting base plate is fixedly installed on one side of the electrode assembly, and the limiting base plate has an insertion hole electrically cooperating with the test host. A moving mechanism is symmetrically arranged on the inner wall of the housing, and a limiting mechanism is fixedly installed on the outer surface of one end of the housing.

[0006] During use, the detection battery is placed inside the housing. Then, the distance between the right connecting plate and the left connecting block is adjusted by the moving mechanism to clamp and fix the detection battery in the middle. At this time, the circuits inside the right connecting plate and the left connecting block are automatically connected. By inserting the plug into the plug hole, the detection host is connected to the circuit inside the right connecting plate. Then, by utilizing the characteristics of the electrode group itself, the multiple sets of electrode points inside the electrode group correspond to the motor points at the end of the detection battery, which can better complete the circuit connection. By utilizing the characteristic of the detection battery current being transmitted laterally from the tab to the current collector and then longitudinally from the current collector, the resistance during detection can be greatly reduced, and the stability of the equipment detection can be enhanced. In addition, the side circuit can be limited by the use of the limiting mechanism to ensure the stability of the equipment during operation.

[0007] Preferably, the outer diameter of the electrode assembly is adapted to the end of the detection battery, and an electrode sheet electrically compatible with the detection battery is fixedly installed on the other side of the electrode assembly.

[0008] By utilizing the overall specifications and size of the electrode plates, after the electrode assembly is connected to the detection battery, the internal circuit of the detection battery can be more stably connected to the internal circuit of the right connecting plate. This eliminates the original transmission steps from the electrode tab to the wire, reducing the resistance between component connections.

[0009] Preferably, the left connecting block and the right connecting plate have the same structure.

[0010] During use, it can fully connect both sides of the detection battery simultaneously, reducing the overall resistance of the device during operation.

[0011] Preferably, the moving mechanism includes a moving groove, a moving rod, a moving block, and a spring. The moving groove is symmetrically provided on the inner wall of the outer shell. The moving rod is fixedly installed inside the moving groove. The moving block is slidably installed inside the moving groove. The moving block is slidably connected to the moving rod. The moving rod is sleeved with a spring. The side of the moving block is fixedly connected to the left connecting block.

[0012] During use, by pushing the left connecting block, the left connecting block moves left and right along the moving rod with the help of the moving block. At this time, the detection battery is placed inside the housing. Then, the left connecting block is released. The left connecting block will automatically reset under the action of the spring, and the left connecting block and the right connecting plate will automatically clamp the detection battery in the middle, realizing the rapid positioning of the detection battery.

[0013] Preferably, a push handle is fixedly installed on the upper end of the left connecting block.

[0014] It is more convenient and less strenuous to push the left connecting block during use.

[0015] Preferably, the limiting mechanism includes a fixed base, a bracket, a through slot, and a clamping frame. The fixed base is fixedly installed on the side of the outer shell, the bracket is fixedly installed on the side of the fixed base, the clamping frame is fixedly installed on the top of the bracket, and the through slot is provided inside the outer shell.

[0016] In use, the mounting bracket is installed on the side of the housing, and then the clamping bracket is aligned with the slot. The slot and clamping bracket are then used to limit the movement of the wiring on the side, which facilitates the movement of the left connecting block without causing the wiring to twist.

[0017] Preferably, the inner diameter of the slot inside the clamping frame is the same as the inner diameter of the through slot.

[0018] It is convenient to clamp and limit the line during use, ensuring the stability of the line during use.

[0019] Preferably, the detection host has two plug-in terminals connected to its two ends by wires, and the two plug-in terminals are respectively plugged into the ends of the right connecting plate and the left connecting block for electrical connection.

[0020] During use, the connection lines are installed to detect the telecommunication connection between the host and the right and left connecting boards, and to receive and analyze the circuit signals received by the right and left connecting boards.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] (1) In this utility model, by setting the right connecting plate and the left connecting plate, it can be stably attached to both ends of the tabless battery. By utilizing the distribution of the electrode points inside the electrode plates inside the two sets of connecting plates, the connecting plates can be better connected to the entire tab at the end of the battery, shortening the distance of the circuit transmission and reducing the resistance of the overall circuit path, thereby improving the working quality of the equipment itself and strengthening the stability of the equipment during operation.

[0023] (2) In this utility model, by setting a moving mechanism and a limiting mechanism, the battery to be tested can be quickly and stably limited, ensuring the stability of the battery when receiving the test, and subsequently, the connecting plates on both sides can be connected and attached to the battery end as much as possible, which enhances the stability of the equipment during use and ensures the working quality of the equipment during use. Attached Figure Description

[0024] Figure 1 This is a perspective view of the overall structure of this utility model;

[0025] Figure 2 This is a perspective view of the internal structure of the outer shell of this utility model;

[0026] Figure 3 This is a perspective view of the structure on both sides of the left connecting plate of this utility model;

[0027] Figure 4 This is a schematic diagram of the right connecting plate in this utility model;

[0028] Figure 5 This is a schematic diagram of the moving mechanism in this utility model;

[0029] Figure 6 This is a schematic diagram of the limiting mechanism in this utility model.

[0030] The correspondence between the labels and component names in the attached figures is as follows:

[0031] 1. Outer casing; 2. Detection battery; 3. Detection host; 4. Right connecting plate; 41. Electrode assembly; 42. Limiting base plate; 43. Insertion hole; 44. Insertion end; 5. Left connecting block; 6. Moving mechanism; 61. Moving slot; 62. Moving rod; 63. Moving block; 64. Spring; 7. Limiting mechanism; 71. Fixed base; 72. Bracket; 73. Through slot; 74. Clamping frame. Detailed Implementation

[0032] 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.

[0033] Please see Figures 1-6 This utility model provides a technical solution: a tabless battery testing fixture, including a housing 1, a test battery 2, a test host 3, a right connecting plate 4 and a left connecting block 5. The right connecting plate 4 and the left connecting block 5 are respectively arranged at both ends inside the housing 1. The test battery 2 is arranged between the right connecting plate 4 and the left connecting block 5. The test host 3, which is electrically connected to the test battery 2, is arranged on one side of the housing 1. The right connecting plate 4 includes an electrode assembly 41, a limiting base plate 42 and a plug hole 43. The electrode assembly 41 is fixedly installed inside one end of the housing 1. The limiting base plate 42 is fixedly installed on one side of the electrode assembly 41, and the limiting base plate 42 has a plug hole 43 that is electrically connected to the test host 3. The inner sidewall of the housing 1 is symmetrically provided with a moving mechanism 6, and a limiting mechanism 7 is fixedly installed on the outer surface of one end of the housing 1.

[0034] In use, the detection battery 2 is placed inside the housing 1, and then the distance between the right connecting plate 4 and the left connecting block 5 is adjusted by the moving mechanism 6 to clamp and fix the detection battery 2 in the middle. At this time, the circuit inside the right connecting plate 4 and the left connecting block 5 will be automatically connected. By inserting the plug end 44 into the plug hole 43, the detection host 3 is connected to the circuit inside the right connecting plate 4. Then, by utilizing the characteristics of the electrode group 41 itself, the multiple sets of electrode points inside the electrode group 41 correspond to the motor points at the end of the detection battery 2, which can better complete the circuit connection. By utilizing the characteristic that the current of the detection battery 2 changes from the horizontal transmission along the tab to the longitudinal transmission of the current collector, the resistance during detection can be greatly reduced, and the stability of the equipment detection can be enhanced. In addition, the side circuit can be limited by the use of the limiting mechanism 7, which ensures the stability of the equipment during operation.

[0035] In this embodiment, preferably, the outer diameter of the electrode assembly 41 is adapted to the end of the detection battery 2, and an electrode sheet electrically connected to the detection battery 2 is fixedly installed on the other side of the electrode assembly 41.

[0036] By utilizing the overall specifications and size of the electrode sheet, after the electrode assembly 41 is connected to the detection battery 2, the internal circuit of the detection battery 2 can be more stably connected to the internal circuit of the right connecting plate 4, thus eliminating the original transmission steps from the electrode tab to the wire and reducing the resistance between the components.

[0037] In this embodiment, preferably, the left connecting block 5 and the right connecting plate 4 have the same structure, which can fully connect both sides of the detection battery 2 at the same time during use, reducing the overall resistance of the device during operation.

[0038] In this embodiment, preferably, the moving mechanism 6 includes a moving groove 61, a moving rod 62, a moving block 63, and a spring 64. The moving groove 61 is symmetrically provided on the inner wall of the outer shell 1. The moving rod 62 is fixedly installed inside the moving groove 61. The moving block 63 is slidably installed inside the moving groove 61. The moving block 63 is slidably connected to the moving rod 62. The spring 64 is sleeved on the outside of the moving rod 62. The side of the moving block 63 is fixedly connected to the left connecting block 5.

[0039] In use, by pushing the left connecting block 5, the left connecting block 5 moves left and right along the moving rod 62 with the cooperation of the moving block 63. At this time, the detection battery 2 is placed inside the outer shell 1. Then, the left connecting block 5 is released. At this time, the left connecting block 5 will automatically reset under the action of the spring 64, and the left connecting block 5 and the right connecting plate 4 will automatically clamp the detection battery 2 in the middle, realizing the rapid positioning of the detection battery 2.

[0040] In this embodiment, preferably, a push handle is fixedly installed on the upper end of the left connecting block 5.

[0041] It is more convenient and less strenuous to push the left connecting block 5 during use.

[0042] In this embodiment, preferably, the limiting mechanism 7 includes a fixed seat 71, a bracket 72, a through slot 73 and a clamping frame 74. The fixed seat 71 is fixedly installed on the side of the outer shell 1, the bracket 72 is fixedly installed on the side of the fixed seat 71, the clamping frame 74 is fixedly installed on the top of the bracket 72, and the through slot 73 is opened inside the outer shell 1.

[0043] In use, the mounting base 71 is installed on the side of the housing 1, and the clamping bracket 74 is aligned with the slot 73. Then, the slot 73 and the clamping bracket 74 are used to limit the side of the line, so that the line itself will not be twisted while moving with the left connecting block 5.

[0044] In this embodiment, preferably, the inner diameter of the slot inside the clamping frame 74 is the same as the inner diameter of the through slot 73.

[0045] It is convenient to clamp and limit the line during use, ensuring the stability of the line during use.

[0046] In this embodiment, preferably, the two ends of the detection host 3 are connected by wires to two plug-in terminals 44, and the two plug-in terminals 44 are respectively plugged into the ends of the right connecting plate 4 and the left connecting block 5 for electrical connection.

[0047] During use, the connection lines are installed to detect the telecommunication connection between the host 3 and the right connecting board 4 and the left connecting block 5, and to receive and analyze the circuit signals received by the right connecting board 4 and the left connecting block 5.

[0048] 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. A tabless battery testing fixture, comprising a housing (1), a test battery (2), a testing host (3), a right connecting plate (4), and a left connecting block (5), wherein the housing (1) has a right connecting plate (4) and a left connecting block (5) respectively disposed at both ends inside, the test battery (2) is disposed between the right connecting plate (4) and the left connecting block (5), and the testing host (3) electrically connected to the test battery (2) is disposed on one side of the housing (1), characterized in that: The right connecting plate (4) includes an electrode assembly (41), a limiting base plate (42), and a plug hole (43). The electrode assembly (41) is fixedly installed inside one end of the outer shell (1), and the limiting base plate (42) is fixedly installed on one side of the electrode assembly (41). The limiting base plate (42) has a plug hole (43) that is electrically connected to the detection host (3). The inner sidewall of the outer shell (1) is symmetrically provided with a moving mechanism (6), and a limiting mechanism (7) is fixedly installed on the outer surface of one end of the outer shell (1).

2. The tabless battery testing fixture according to claim 1, characterized in that: The outer diameter of the electrode assembly (41) is adapted to the end of the detection battery (2), and an electrode sheet electrically connected to the detection battery (2) is fixedly installed on the other side of the electrode assembly (41).

3. The tabless battery testing fixture according to claim 1, characterized in that: The left connecting block (5) and the right connecting plate (4) have the same structure.

4. The tabless battery testing fixture according to claim 1, characterized in that: The moving mechanism (6) includes a moving groove (61), a moving rod (62), a moving block (63), and a spring (64). The inner wall of the outer shell (1) is symmetrically provided with moving grooves (61). The moving rod (62) is fixedly installed inside the moving groove (61). The moving block (63) is slidably installed inside the moving groove (61). The moving block (63) is slidably connected to the moving rod (62). The moving rod (62) is sleeved with a spring (64). The side of the moving block (63) is fixedly connected to the left connecting block (5).

5. The tabless battery testing fixture according to claim 1, characterized in that: A push handle is fixedly installed on the upper end of the left connecting block (5).

6. The tabless battery testing fixture according to claim 1, characterized in that: The limiting mechanism (7) includes a fixed seat (71), a bracket (72), a through slot (73) and a clamping frame (74). The fixed seat (71) is fixedly installed on the side of the outer shell (1), the bracket (72) is fixedly installed on the side of the fixed seat (71), and the clamping frame (74) is fixedly installed on the top of the bracket (72). The through slot (73) is opened inside the outer shell (1).

7. The tabless battery testing fixture according to claim 6, characterized in that: The inner diameter of the slot inside the clamp (74) is the same as that of the through slot (73).

8. The tabless battery testing fixture according to claim 1, characterized in that: The detection host (3) has two plug-in terminals (44) connected by wires at both ends, and the two plug-in terminals (44) are respectively plugged into the ends of the right connecting plate (4) and the left connecting block (5) for electrical connection.

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