Cylindrical battery testing tool

Abstract

The utility model relates to the technical field of battery testing, in particular to a cylindrical battery testing tool which comprises a first over-current pressure head, a first insulating sleeve, a second over-current pressure head, a cover plate testing unit and a pole testing unit, the first insulating sleeve is arranged on the first over-current pressure head, the second over-current pressure head is arranged on the inner side of the first insulating sleeve, and the cover plate testing unit is arranged on the inner side of the second over-current pressure head. The first over-current pressure head and the second over-current pressure head can be insulated through the first insulation sleeve, when a battery test is carried out, the first over-current pressure head is connected with a battery cell cover plate, the second over-current pressure head is connected with a battery cell pole to enable the battery to work, and the cover plate test unit and the pole test unit can test the cover plate and the pole by connecting the cover plate and the pole. The cover plate testing unit and the pole testing unit are respectively arranged on the first overcurrent pressure head and the second overcurrent pressure head, so that the insulation of the cover plate testing unit and the pole testing unit can be realized, the short circuit of the cover plate testing unit and the pole testing unit in the testing process is avoided, and the stable proceeding of the testing process is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of battery testing, in particular to a cylindrical battery testing tooling. Background Art

[0002] With the continuous development of the new energy industry and the continuous innovation of technology, cylindrical batteries are widely used in portable electronic devices, electric vehicles, electric cars and other fields due to their advantages of high energy density, long cycle life, low self-discharge, safety and environmental protection. At present, there are various types of cylindrical batteries on the market, and cylindrical batteries with different diameters and different heights emerge in an endless stream. To meet the testing requirements of different cylindrical batteries, different testing jigs are needed for testing.

[0003] The positive and negative electrodes of common cylindrical batteries are usually arranged at both ends, and testing jigs adapted to the positive and negative electrodes at both ends are required for testing. For example, the cylindrical battery testing jig disclosed in the patent document with the publication number of CN217587533U includes a testing jig frame, a moving probe device, a fixed probe device and a probe connecting wire. The moving probe device and the fixed probe device are respectively arranged on both sides of the testing jig frame, and both ends of the probe connecting wire are respectively connected to the moving probe device and the fixed probe device. During the testing process of the lithium battery, the lithium battery is located between the moving probe device and the fixed probe device. The battery testing jig clamps the cylindrical battery by adjusting the moving probe device, and then the testing of the cylindrical battery can be carried out.

[0004] The above testing jig is only applicable to the testing of cylindrical batteries with positive and negative electrodes on different sides. For the testing of cylindrical batteries with positive and negative electrodes on the same side, the probes in contact with the electrodes of the testing tooling need to be arranged on the same side. Limited by the diameter of the battery core, the distance between the positive and negative probes is too small, increasing the risk of probe short circuit during the testing process. Summary of the Utility Model

[0005] In view of this, it is necessary to provide a cylindrical battery testing tooling to solve the technical problem of the risk of short circuit of the positive and negative probes in the prior art during the testing of cylindrical batteries with positive and negative electrodes on different sides.

[0006] To achieve the above technical purpose, the technical solution of the utility model provides a cylindrical battery testing tooling, including:

[0007] A first overcurrent pressure head for connecting the battery core cover plate and conducting current for the battery core cover plate;

[0008] A first insulating sleeve installed on the first overcurrent pressure head;

[0009] A second overcurrent pressure head installed inside the first insulating sleeve for connecting the battery core terminal and conducting current for the battery core terminal;

[0010] The cover plate testing unit is installed on the first overcurrent pressure head and is used to connect the cell cover plate to test the cell cover plate.

[0011] The pole column testing unit is installed on the second overcurrent pressure head and is used to connect the cell pole column to test the cell pole column.

[0012] Furthermore, the cover plate testing unit includes a temperature testing module and a voltage testing module. The temperature testing module and the voltage testing module are respectively located on both sides of the pole column testing unit and are respectively used to test the temperature and voltage of the cell cover plate.

[0013] Furthermore, the temperature testing module includes a second insulating sleeve and a temperature probe. The second insulating sleeve is installed on the first overcurrent pressure head. The temperature probe is slidably connected to the second insulating sleeve and can be connected to the cell cover plate by sliding along the second insulating sleeve.

[0014] Furthermore, the temperature testing module further includes a first pressure supply spring. The first pressure supply spring is located inside the second insulating sleeve. One end of the first pressure supply spring abuts against the inner wall of the second insulating sleeve, and the other end of the first pressure supply spring abuts against the shoulder of the temperature probe. The temperature probe can extend out of the second insulating sleeve by the elastic force of the first pressure supply spring.

[0015] Furthermore, the voltage testing module includes a third insulating sleeve and a first voltage probe. The third insulating sleeve is installed on the first overcurrent pressure head. The first voltage probe is slidably connected to the third insulating sleeve and can be connected to the cell cover plate by sliding along the third insulating sleeve.

[0016] Furthermore, the voltage testing module further includes a second pressure supply spring. The second pressure supply spring is located inside the third insulating sleeve. One end of the second pressure supply spring abuts against the inner wall of the third insulating sleeve, and the other end of the second pressure supply spring abuts against the shoulder of the first voltage probe. The first voltage probe can extend out of the third insulating sleeve by the elastic force of the second pressure supply spring.

[0017] Furthermore, a limiting sliding groove is provided on the surface of the second overcurrent pressure head. The limiting sliding groove extends along the axial direction of the second overcurrent pressure head. A limiting protrusion is provided inside the first insulating sleeve. The limiting protrusion is slidably connected to the limiting sliding groove.

[0018] Furthermore, the testing tooling further includes a third pressure supply spring. The third pressure supply spring is sleeved on the second overcurrent pressure head. One end of the third pressure supply spring abuts against the shoulder of the second overcurrent pressure head, and the other end of the third pressure supply spring abuts against the limiting protrusion.

[0019] Further, the pole testing unit includes a fourth insulating sleeve and a second voltage probe. The fourth insulating sleeve is sleeved on the second overcurrent head, and the second voltage probe is slidably connected to the fourth insulating sleeve and can be slid along the fourth insulating sleeve to connect to the cell pole.

[0020] Further, the pole testing unit further includes a fourth pressure supply spring. The fourth pressure supply spring is located inside the fourth insulating sleeve. One end of the fourth pressure supply spring abuts against the inner wall of the fourth insulating sleeve, and the other end of the fourth pressure supply spring abuts against the shoulder of the second voltage probe. The second voltage probe can extend out of the fourth insulating sleeve by the elastic force of the fourth pressure supply spring.

[0021] Compared with the prior art, the beneficial effects of the cylindrical battery testing tooling of the present utility model include: by providing a first overcurrent head, a first insulating sleeve, a second overcurrent head, a cover plate testing unit and a pole testing unit, the first insulating sleeve is sleeved on the first overcurrent head, and the second overcurrent head is installed inside the first insulating sleeve, so that the first overcurrent head and the second overcurrent head can be insulated by the first insulating sleeve. When testing the battery, the first current head is connected to the cell cover plate, and the second overcurrent head is connected to the cell pole. Thus, a current is formed through the current guiding action of the first current head and the second current head to make the battery work. The cover plate testing unit and the pole testing unit can test the cover plate and the pole by connecting the cover plate and the pole, thereby realizing the testing of the cylindrical battery. The cover plate testing unit and the pole testing unit are respectively installed on the first overcurrent head and the second overcurrent head, which can realize the insulation of the cover plate testing unit and the pole testing unit, thus avoiding the short circuit of the cover plate testing unit and the pole testing unit, and preventing the cover plate testing unit and the pole testing unit from short-circuiting during the testing process, ensuring the stable progress of the testing process. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the cylindrical battery testing tooling provided by an embodiment of the present utility model;

[0023] Figure 2 is a top view of the cylindrical battery testing tooling provided by an embodiment of the present utility model;

[0024] Figure 3 is along Figure 2 the sectional view taken along line A-A in

[0025] Figure 4 is an exploded view of the cylindrical battery testing tooling provided by an embodiment of the present utility model.

[0026] Among them, the reference numerals in the drawings:

[0027] 10 - First overcurrent head 20 - First insulating sleeve 21 - Limit protrusion

[0028] 30 - Second overcurrent pressure head 31 - Limit chute 40 - Cover plate test unit

[0029] 41 - Temperature test module 42 - Voltage test module 50 - Terminal post test unit

[0030] 51 - Fourth insulating sleeve 52 - Second voltage probe 53 - Fourth pressure supply spring

[0031] 60 - Third pressure supply spring 411 - Second insulating sleeve 412 - Temperature probe

[0032] 413 - First pressure supply spring 421 - Third insulating sleeve 422 - First voltage probe

[0033] 423 - Second pressure supply spring. Detailed implementation mode

[0034] The following combines with the attached drawings to specifically describe the preferred embodiments of the present utility model. Among them, the attached drawings form a part of this application and are used together with the embodiments of the present utility model to explain the principle of the present utility model, and are not used to limit the scope of the present utility model.

[0035] The embodiment of the present utility model provides a cylindrical battery testing tooling, which solves the technical problem that there is a short - circuit risk between the positive and negative probes in the prior art during the testing process of cylindrical batteries with the positive and negative electrodes on different sides by insulating the positive probe and the negative probe.

[0036] The cylindrical battery testing tooling provided by the embodiment of the present utility model, as Figures 1-4 shown, includes a first overcurrent pressure head 10, a first insulating sleeve 20, a second overcurrent pressure head 30, a cover plate test unit 40 and a terminal post test unit 50. The first overcurrent pressure head 10 is used to connect the cell cover plate and conduct current for the cell cover plate; the first insulating sleeve 20 is installed on the first overcurrent pressure head 10; the second overcurrent pressure head 30 is installed inside the first insulating sleeve 20 and is used to connect the cell terminal post and conduct current for the cell terminal post; the cover plate test unit 40 is installed on the first overcurrent pressure head 10 and is used to connect the cell cover plate and test the cell cover plate; the terminal post test unit 50 is installed on the second overcurrent pressure head 30 and is used to connect the cell terminal post and test the cell terminal post.

[0037] Specifically, the cylindrical battery test tooling is configured with a first overcurrent pressure head 10, a first insulating sleeve 20, a second overcurrent pressure head 30, a cover plate test unit 40, and a pole column test unit 50. The first insulating sleeve 20 is installed on the first overcurrent pressure head 10, and the second overcurrent pressure head 30 is installed inside the first insulating sleeve 20, enabling the first overcurrent pressure head 10 and the second overcurrent pressure head 30 to be insulated through the first insulating sleeve 20. When conducting battery tests, the first current pressure head is connected to the battery cell cover plate, and the second overcurrent pressure head 30 is connected to the battery cell pole column. A current is formed through the current guiding action of the first current pressure head and the second current pressure head, enabling the cylindrical battery to operate normally. During the normal operation of the cylindrical battery, the cover plate test unit 40 and the pole column test unit 50 test the cover plate and the pole column by connecting to the cover plate and the pole column, thereby realizing the test of the cylindrical battery. The cover plate test unit 40 and the pole column test unit 50 are installed on the first overcurrent pressure head 10 and the second overcurrent pressure head 30 respectively, which can insulate the cover plate test unit 40 and the pole column test unit 50, thus preventing the cover plate test unit 40 and the pole column test unit 50 from being short-circuited and avoiding short circuits during the test process of the cover plate test unit 40 and the pole column test unit 50, ensuring the stable progress of the test process.

[0038] In this embodiment, the battery cell cover plate is the positive electrode of the battery, and the battery cell pole column is the negative electrode of the battery.

[0039] It can be understood that the first overcurrent pressure head 10 can be any conductive component capable of connecting to the battery cell cover plate to conduct current, and the first insulating sleeve 20 can be any insulating component fixed to the first overcurrent pressure head 10.

[0040] In this embodiment, as Figures 1-4 shown, both the first overcurrent pressure head 10 and the first insulating sleeve 20 are annular structures. The surface of the first insulating sleeve 20 is provided with an annular limiting groove, and the inner side of the first overcurrent pressure head 10 is embedded in the annular limiting groove. By embedding the inner side of the first overcurrent pressure head 10 in the annular limiting groove on the outer side of the first insulating sleeve 20, the fixation of the first overcurrent pressure head 10 and the first insulating sleeve 20 can be achieved.

[0041] It can be understood that the second overcurrent pressure head 30 can be any conductive component installed inside the first insulating sleeve 20 and capable of connecting to the battery cell pole column to conduct current.

[0042] It can be understood that the cover plate test unit 40 can be a test piece capable of testing the voltage, current, or temperature of the battery cell cover plate during battery operation.

[0043] In one of the embodiments, as Figures 1-4As shown, the cover plate testing unit 40 includes a temperature testing module 41 and a voltage testing module 42. The temperature testing module 41 and the voltage testing module 42 are respectively located on both sides of the pole column testing unit 50, and are respectively used to test the temperature and voltage of the cell cover plate. Specifically, the cover plate testing unit 40 realizes the testing of the temperature and voltage of the cell cover plate of the cylindrical battery through the provided temperature testing module 41 and voltage testing module 42.

[0044] In one embodiment, as Figures 3-4 shown, the temperature testing module 41 includes a second insulating sleeve 411 and a temperature probe 412. The second insulating sleeve 411 is installed on the first overcurrent pressure head 10. The temperature probe 412 is slidably connected to the second insulating sleeve 411 and can be slidably connected to the cell cover plate along the second insulating sleeve 411. Specifically, the second insulating sleeve 411 can be used for installing the temperature probe 412 and realizes the insulation between the temperature probe 412 and the first overcurrent pressure head 10. When testing the temperature of the cell cover plate, the temperature probe 412 is slidably connected to the cell cover plate in the direction towards the cell cover plate, so as to realize the testing of the temperature of the cell cover plate.

[0045] In one embodiment, as Figures 3-4 shown, the second insulating sleeve 411 is provided with an annular limiting groove, and the second insulating sleeve 411 is embedded in the interior of the first overcurrent pressure head 10 through an annular limiting sleeve.

[0046] In one embodiment, as Figures 3-4 shown, the temperature testing module 41 further includes a first pressure supply spring 413. The first pressure supply spring 413 is located inside the second insulating sleeve 411. One end of the first pressure supply spring 413 abuts against the inner wall of the second insulating sleeve 411, and the other end of the first pressure supply spring 413 abuts against the shoulder of the temperature probe 412. The temperature probe 412 can extend out of the second insulating sleeve 411 by the elastic force of the first pressure supply spring 413. Specifically, through the setting of the first pressure supply spring 413, the temperature probe 412 can be tightly connected to the cell cover plate under the action of the elastic force of the first pressure supply spring 413, improving the bonding force between the temperature probe 412 and the cell cover plate and the accuracy of the temperature testing of the cell cover plate.

[0047] In one embodiment, as Figures 3-4As shown, the voltage test module 42 includes a third insulating sleeve 421 and a first voltage probe 422. The third insulating sleeve 421 is installed on the first overcurrent terminal 10. The first voltage probe 422 is slidably connected to the third insulating sleeve 421 and can be slid along the third insulating sleeve 421 to connect to the cell cover plate. Specifically, the third insulating sleeve 421 can accommodate the first voltage probe 422 and achieve insulation between the first overcurrent terminal 10 and the first voltage probe 422. When testing the voltage of the cell cover plate, the first voltage probe 422 slides towards the cell cover plate to connect to the cell cover plate, thereby realizing the voltage test of the cell cover plate.

[0048] In one embodiment, as Figures 3-4 shown, the voltage test module 42 further includes a second pressure supply spring 423. The second pressure supply spring 423 is located inside the third insulating sleeve 421. One end of the second pressure supply spring 423 abuts against the inner wall of the third insulating sleeve 421, and the other end of the second pressure supply spring 423 abuts against the shoulder of the first voltage probe 422. The first voltage probe 422 can extend out of the third insulating sleeve 421 by the elastic force of the second pressure supply spring 423. Specifically, through the setting of the second pressure supply spring 423, the first voltage probe 422 can be tightly connected to the cell cover plate under the elastic force of the second pressure supply spring 423, improving the bonding force between the first voltage probe 422 and the cell cover plate and the accuracy of the voltage test of the cell cover plate.

[0049] In one embodiment, as Figures 3-4 shown, the third insulating sleeve 421 is provided with an annular limiting groove, and the third insulating sleeve 421 is embedded in the interior of the first overcurrent terminal 10 through an annular limiting sleeve.

[0050] In one embodiment, as Figures 3-4 shown, the surface of the second overcurrent terminal 30 is provided with a limiting sliding groove 31. The limiting sliding groove 31 extends along the axial direction of the second overcurrent terminal 30. The inner side of the first insulating sleeve 20 is provided with a limiting protrusion 21, and the limiting protrusion 21 is slidably connected to the limiting sliding groove 31. Specifically, through the cooperation of the limiting sliding groove 31 on the surface of the second overcurrent terminal 30 and the limiting protrusion 21 of the first insulating sleeve 20, the installation and limitation of the second overcurrent terminal 30 and the first insulating sleeve 20 can be realized, and at the same time, the sliding connection between the second overcurrent terminal 30 and the first insulating sleeve 20 can be realized. By sliding the second overcurrent terminal 30, the second overcurrent terminal 30 can be adapted to cell poles of any size and better contact the cell poles.

[0051] In one embodiment, as Figures 3-4As shown, the test fixture further includes a third pressure supply spring 60. The third pressure supply spring 60 is sleeved on the second overcurrent pressure head 30. One end of the third pressure supply spring 60 abuts against the shoulder of the second overcurrent pressure head 30, and the other end of the third pressure supply spring 60 abuts against the limit projection 21. Specifically, the third pressure supply spring 60 generates an elastic force acting on the second overcurrent pressure head 30, thereby increasing the pressing force of the second overcurrent pressure head 30 on the battery cell pole column and ensuring the close combination of the second overcurrent pressure head 30 and the battery cell pole column.

[0052] In one of the embodiments, as Figures 3-4 shown, the pole column test unit 50 includes a fourth insulating sleeve 51 and a second voltage probe 52. The fourth insulating sleeve 51 is installed on the second overcurrent pressure head 30. The second voltage probe 52 is slidably connected to the fourth insulating sleeve 51 and can be slidably connected to the battery cell pole column along the fourth insulating sleeve 51. Specifically, the fourth insulating sleeve 51 can accommodate the second voltage probe 52 and achieve insulation between the second voltage probe 52 and the second overcurrent pressure head 30. When testing the voltage of the battery cell pole column, the second voltage probe 52 is slidably connected to the battery cell pole column in the direction towards the battery cell cover plate, thereby realizing the test of the voltage of the battery cell pole column.

[0053] In one of the embodiments, as Figures 3-4 shown, the pole column test unit 50 further includes a fourth pressure supply spring 53. The fourth pressure supply spring 53 is located inside the fourth insulating sleeve 51. One end of the fourth pressure supply spring 53 abuts against the inner wall of the fourth insulating sleeve 51, and the other end of the fourth pressure supply spring 53 abuts against the shoulder of the second voltage probe 52. The second voltage probe 52 can extend out of the fourth insulating sleeve 51 under the elastic force of the fourth pressure supply spring 53. Specifically, through the arrangement of the fourth pressure supply spring 53, the second voltage probe 52 can be tightly connected to the battery cell pole column under the elastic force of the fourth pressure supply spring 53, improving the bonding force between the second voltage probe 52 and the battery cell pole column and the accuracy of the voltage test of the battery cell pole column.

[0054] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A cylindrical battery testing tool, characterized in that: include: A first overcurrent pressure head is used to connect the battery cover plate to guide the battery cover plate; A first insulating sleeve, mounted on the first overflow pressure head; A second overcurrent pressure head is installed on the inner side of the first insulating sleeve and is used to connect the battery cell pole to guide the current to the battery cell pole; a cover plate testing unit, installed on the first overcurrent pressure head, used to connect the cell cover plate and test the cell cover plate; and The pole testing unit is installed on the second overcurrent voltage head and is used to connect the battery cell pole to test the battery cell pole.

2. The cylindrical battery testing tool according to claim 1, characterized in that: The cover plate test unit comprises a temperature test module and a voltage test module, wherein the temperature test module and the voltage test module are respectively located on both sides of the pole test unit and are respectively used to test the temperature and voltage of the battery cell cover plate.

3. The cylindrical battery testing tool according to claim 2, characterized in that: The temperature testing module includes a second insulating sleeve and a temperature probe, wherein the second insulating sleeve is arranged on the first overcurrent pressure head, and the temperature probe is slidably connected to the second insulating sleeve and can be connected to the battery cell cover by sliding along the second insulating sleeve.

4. The cylindrical battery testing tool according to claim 3, characterized in that: The temperature testing module also includes a first pressure supply spring, which is located on the inner side of the second insulating sleeve, one end of the first pressure supply spring is against the inner wall of the second insulating sleeve, and the other end of the first pressure supply spring is against the shoulder of the temperature probe. The temperature probe can be extended out of the second insulating sleeve by the elastic force of the first pressure supply spring.

5. The cylindrical battery testing tool according to claim 2, characterized in that: The voltage testing module includes a third insulating sleeve and a first voltage probe, wherein the third insulating sleeve is arranged on the first overcurrent voltage head, and the first voltage probe is slidably connected to the third insulating sleeve and can be connected to the cell cover by sliding along the third insulating sleeve.

6. The cylindrical battery testing tool according to claim 5, characterized in that: The voltage testing module also includes a second pressure supply spring, which is located on the inner side of the third insulating sleeve, one end of the second pressure supply spring is against the inner wall of the third insulating sleeve, and the other end of the second pressure supply spring is against the shoulder of the first voltage probe. The first voltage probe can be extended out of the third insulating sleeve by the elastic force of the second pressure supply spring.

7. The cylindrical battery testing tool according to any one of claims 1 to 6, characterized in that: A limiting groove is provided on the surface of the second overflow pressure head, and the limiting groove extends along the axial direction of the second overflow pressure head. A limiting protrusion is provided on the inner side of the first insulating sleeve, and the limiting protrusion is slidably connected to the limiting groove.

8. The cylindrical battery testing tool according to claim 7, characterized in that: The test fixture also includes a third pressure supply spring, which is sleeved on the second overflow pressure head, one end of the third pressure supply spring abuts against the shoulder of the second overflow pressure head, and the other end of the third pressure supply spring abuts against the limiting protrusion.

9. The cylindrical battery testing tool according to any one of claims 1 to 6, characterized in that: The pole testing unit includes a fourth insulating sleeve and a second voltage probe, the fourth insulating sleeve is arranged on the second overcurrent voltage head, the second voltage probe is slidably connected to the fourth insulating sleeve, and can be connected to the battery cell pole by sliding along the fourth insulating sleeve.

10. The cylindrical battery testing tool according to claim 9, characterized in that: The pole test unit also includes a fourth pressure supply spring, which is located on the inner side of the fourth insulating sleeve, one end of the fourth pressure supply spring is against the inner wall of the fourth insulating sleeve, and the other end of the fourth pressure supply spring is against the shoulder of the second voltage probe. The second voltage probe can be extended out of the fourth insulating sleeve by the elastic force of the fourth pressure supply spring.

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