Battery compression resistance testing device

Abstract

The utility model discloses a compression resistance testing device for a battery. The compression resistance testing device comprises a workbench, a lower extrusion die assembly, an upper extrusion die assembly, a speed reducer, an outer protective cover and an industrial personal computer, the lower extrusion die assembly comprises a pressure transmitter and a lower extrusion seat which are sequentially arranged from bottom to top; the upper extrusion die assembly comprises a lead screw connecting sleeve and an upper extrusion base which are sequentially arranged from top to bottom. A motor screw rod is arranged on the speed reducer; the motor screw rod sleeves the screw rod connecting sleeve, and the bottom of the motor screw rod is connected with the upper extrusion seat; the lower extrusion seat and the upper extrusion seat are oppositely arranged; a battery to be tested is placed on the lower extrusion seat; and the pressure transmitter is electrically connected with the industrial personal computer. Through the above scheme, the device has the advantages of simple structure, in-place protection, reliable testing and the like, and has very high practical value and popularization value in the technical field of battery testing.

Description

Technical Field

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

[0002] With the continuous development of new energy technologies, new energy batteries have also been vigorously promoted and applied. According to the battery (pack) extrusion test, a compressive force with a fixed direction and a fixed speed is applied to the battery (pack) to detect the compressive performance of the battery (pack) when it is externally squeezed.

[0003] In the prior art, a battery compression test device such as the Chinese utility model with the patent publication number: CN220019214U and the name: A compressive force detection device for battery production includes a fixed plate and a connecting rod. Four groups of connecting rods are installed on the top of the fixed plate, and a fixed shell is installed on the top of the connecting rod; a display screen is installed on the front of the fixed shell, buzzers are installed on both sides of the fixed shell, and an inclination sensor is installed on the bottom of the fixed plate.

[0004] Another example is the Chinese utility model with the patent publication number: CN220671129U and the name: A battery compressive property detector, which includes a workbench. A rotating rod is arranged on the top of the workbench. A first bevel gear is fixedly connected to the bottom of the rotating rod. A second bevel gear is meshed with the outer wall of the first bevel gear. A rotating shaft is fixedly connected to the inside of the second bevel gear. A third bevel gear is meshed with the outer wall of the second bevel gear. A threaded rod is rotatably connected to the inside of the third bevel gear. A movable block is threadedly connected to the outer wall of the threaded rod. A clamping plate is fixedly connected to the top of the movable block.

[0005] The above technologies only squeeze the battery and do not have a protection function during the extrusion process (that is, the battery is prone to short - circuit and fire when it is not resistant to extrusion); in addition, they cannot meet the requirements such as insulation protection.

[0006] Therefore, there is an urgent need to propose a battery compression test device with a simple structure, in - place protection, and reliable testing. Summary of the Utility Model

[0007] Aiming at the above problems, the purpose of the present utility model is to provide a battery compression test device. The technical solution adopted by the present utility model is as follows:

[0008] A battery compression test device squeezes the battery to be tested, and it includes a workbench, a lower extrusion die assembly and an upper extrusion die assembly arranged on the workbench, a speed reducer fixed on the workbench and driving the upper extrusion die assembly to move in the longitudinal direction, an outer protective cover arranged in the workbench, and an industrial control computer arranged on the workbench and electrically connected to the speed reducer, the lower extrusion die assembly and the upper extrusion die assembly; the lower extrusion die assembly and the upper extrusion die assembly are placed inside the outer protective cover; a battery access window is arranged on the outer protective cover;

[0009] The lower extrusion die assembly includes a pressure transmitter and a lower extrusion seat arranged in sequence from bottom to top; the upper extrusion die assembly includes a screw rod connecting sleeve and an upper extrusion seat arranged in sequence from top to bottom; a motor screw rod is arranged on the speed reducer; the motor screw rod is sleeved on the screw rod connecting sleeve and its bottom is connected to the upper extrusion seat; the lower extrusion seat and the upper extrusion seat are arranged opposite to each other; the battery to be tested is placed on the lower extrusion seat; the pressure transmitter is electrically connected to the industrial control computer.

[0010] Further, the lower extrusion seat and the upper extrusion seat have the same structure and are arranged in a mirror image opposite manner; the upper extrusion seat includes a connecting plate, a heat insulation pad, a heating block, a mica insulation pad, a current collector and a current collecting plate arranged in sequence from top to bottom, and an inner protective cover covering the outside of the connecting plate, the heat insulation pad, the heating block, the mica insulation pad, the current collector and the current collecting plate; the heating block and the current collector are electrically connected to the industrial control computer.

[0011] Further, a lower connecting seat is arranged on the upper part of the pressure transmitter; a spring is arranged between the lower connecting seat and the lower extrusion seat.

[0012] Further, several guide sliding rods are arranged in the workbench and in the longitudinal direction; the guide sliding rods are placed inside the outer protective cover; a first sliding plate is arranged between the spring and the lower extrusion seat; a second sliding plate is arranged between the motor screw rod and the upper extrusion seat; guide sliding sleeves are respectively arranged at the ends of the first sliding plate and the second sliding plate; the guide sliding sleeves are slidably sleeved on the guide sliding rods.

[0013] Further, a hand wheel is arranged on the speed reducer.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] (1) By arranging the lower extrusion seat and the upper extrusion seat in a mirror image opposite manner, the battery to be tested is clamped between the lower extrusion seat and the upper extrusion seat, and reliable protection is carried out by using the inner protective cover and the outer protective cover.

[0016] (2) The utility model collects the lithium vapor pressure of the battery at high temperature by setting a pressure transmitter. In addition, the utility model simulates the high-temperature condition of the battery by setting a heating block, a heat insulation pad and a mica insulation pad and heating the battery to be tested. Moreover, the utility model collects the current change of the whole battery by setting a current collector and a current collecting plate.

[0017] (3) The utility model ensures the moving reliability of the lower extrusion seat and the upper extrusion seat by setting a first slide plate, a second slide plate, a guiding slide rod and a guiding slide sleeve, effectively avoiding the deviation of the lower extrusion seat and the upper extrusion seat during the battery extrusion process and ensuring the accuracy and reliability of the test.

[0018] (4) The utility model provides shock absorption support during the battery extrusion process by setting a lower connecting seat and a spring, and resets the lower extrusion seat after the test.

[0019] In summary, the utility model has the advantages of simple structure, in-place protection, reliable testing, etc., and has high practical value and popularization value in the field of battery testing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the protection scope. For those skilled in the art, other relevant drawings can also be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram of the present utility model.

[0022] Figure 2 It is a schematic sectional view of the present utility model.

[0023] Figure 3 It is a schematic structural diagram of the present utility model after removing the workbench.

[0024] Figure 4 It is a schematic structural diagram of the present utility model after removing the workbench and the outer protective cover.

[0025] Figure 5 It is a schematic sectional view of the lower extrusion die assembly and the upper extrusion die assembly of the present utility model.

[0026] In the above-mentioned drawings, the component names corresponding to the reference numerals are as follows:

[0027] 1. Workbench; 2. Industrial control computer; 3. Reducer; 4. Handwheel; 5. Lower extrusion die assembly; 6. Upper extrusion die assembly; 7. Outer protective cover; 31. Motor lead screw; 51. Pressure transmitter; 52. Lower connecting seat; 53. Spring; 54. First slide plate; 55. Lower extrusion seat; 61. Lead screw connecting sleeve; 62. Second slide plate; 63. Upper extrusion seat; 81. Guide slide bar; 82. Guide slide sleeve; 631. Inner protective cover; 632. Connecting plate; 633. Heat insulation pad; 634. Heating block; 635. Mica insulation pad; 636. Current collector; 637. Current collecting plate. Detailed implementation manners

[0028] To make the objectives, technical solutions and advantages of this application clearer, the following further explains the present utility model with reference to the accompanying drawings and embodiments. The implementation manners of the present utility model include, but are not limited to, the following embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0029] In this embodiment, the term "and / or" merely describes the associated relationship of associated objects and indicates that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone.

[0030] The terms "first" and "second" etc. in the description and claims of this embodiment are used to distinguish different objects, rather than to describe the specific order of the objects. For example, the first target object and the second target object etc. are used to distinguish different target objects, rather than to describe the specific order of the target objects.

[0031] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Exactly speaking, using words such as "exemplary" or "for example" aims to present relevant concepts in a specific manner.

[0032] In the description of the embodiments of this application, unless otherwise specified, the meaning of "a plurality of" refers to two or more. For example, a plurality of processing units refers to two or more processing units; a plurality of systems refers to two or more systems.

[0033] Such as Figures 1 to 5As shown in the figure, this embodiment provides a battery compressive strength testing device for extruding the battery to be tested. During the extrusion process, in order to simulate the actual operating environment of the battery, a heating element is used for heating. Specifically, it includes a workbench 1, a lower extrusion die assembly 5 and an upper extrusion die assembly 6 arranged on the workbench 1, a speed reducer 3 fixed on the workbench 1 and driving the upper extrusion die assembly 6 to move in the longitudinal direction, an outer protective cover 7 arranged inside the workbench 1, and an industrial control computer 2 arranged on the workbench 1 and electrically connected to the speed reducer 3, the lower extrusion die assembly 5 and the upper extrusion die assembly 6. In this embodiment, the lower extrusion die assembly 5 and the upper extrusion die assembly 6 are placed inside the outer protective cover 7, and a battery access window is provided on the outer protective cover 7 to facilitate the removal and insertion of the battery to be tested. In this embodiment, the upper extrusion die assembly 6 can also be driven to move manually, and a handwheel 4 is provided on the speed reducer 3.

[0034] In this embodiment, two guiding slide rods 81 are arranged inside the workbench 1 and along the longitudinal direction to provide sliding support for the lower extrusion die assembly 5 and the upper extrusion die assembly 6 in the longitudinal direction.

[0035] Among them, the lower extrusion die assembly 5 includes a pressure transmitter 51, a lower connecting seat 52, a spring 53, a first slide plate 54 and a lower extrusion seat 55 arranged in sequence from bottom to top. Two guiding slide sleeves 82 are respectively arranged at the end parts of the first slide plate 54, and the guiding slide sleeves 82 are slidably sleeved on the guiding slide rods 81.

[0036] In addition, the upper extrusion die assembly 6 includes a lead screw connecting sleeve 61, a second slide plate 62 and an upper extrusion seat 63 arranged in sequence from top to bottom. A motor lead screw 31 is arranged on the speed reducer 3, the motor lead screw 31 is sleeved on the lead screw connecting sleeve 61 and the bottom is connected to the upper extrusion seat 63. Similarly, two guiding slide sleeves 82 are also arranged at the end parts of the second slide plate 62. In this way, the lower extrusion die assembly 5 and the upper extrusion die assembly 6 can be moved along the direction of the guiding slide rods 81.

[0037] In this embodiment, the lower extrusion base 55 and the upper extrusion base 63 are arranged opposite to each other in a mirror image, and the battery to be tested is clamped between the lower extrusion base 55 and the upper extrusion base 63. Taking the upper extrusion base 63 as an example, it includes a connecting plate 632, a heat insulation pad 633, a heating block 634, a mica insulation pad 635, a current collector 636 and a current collecting plate 637 arranged in sequence from top to bottom, and an inner protective cover 631 covering the outer sides of the connecting plate 632, the heat insulation pad 633, the heating block 634, the mica insulation pad 635, the current collector 636 and the current collecting plate 637; the heating block 634 and the current collector 636 are electrically connected to the industrial control computer 2. In this embodiment, the mica insulation pad 635, the current collector 636 and the current collecting plate 637 are heated by the heating block 634, and the heat is transferred to the battery to be tested to simulate the operating environment temperature. In addition, in this embodiment, insulation isolation is achieved by setting the mica insulation pad 635.

[0038] The above embodiments are only the preferred embodiments of the present invention, and do not limit the protection scope of the present invention. Any changes made by using the design principle of the present invention and non-creative labor on this basis shall fall within the protection scope of the present invention.

Claims

1. A battery compression test device, which compresses the battery to be tested, characterized in that: The invention comprises a workbench (1), a lower extrusion die assembly (5) and an upper extrusion die assembly (6) arranged on the workbench (1), a reducer (3) fixed on the workbench (1) and driving the upper extrusion die assembly (6) to move in the longitudinal direction, an outer protective cover (7) arranged inside the workbench (1), and an industrial computer (2) arranged on the workbench (1) and electrically connected to the reducer (3), the lower extrusion die assembly (5) and the upper extrusion die assembly (6); the lower extrusion die assembly (5) and the upper extrusion die assembly (6) are placed inside the outer protective cover (7); and a battery access window is arranged on the outer protective cover (7); The lower extrusion die assembly (5) comprises a pressure transmitter (51) and a lower extrusion seat (55) which are arranged in sequence from bottom to top; the upper extrusion die assembly (6) comprises a screw rod connecting sleeve (61) and an upper extrusion seat (63) which are arranged in sequence from top to bottom; a motor screw rod (31) is arranged on the reducer (3); the motor screw rod (31) is sleeved on the screw rod connecting sleeve (61) and the bottom is connected to the upper extrusion seat (63); the lower extrusion seat (55) is arranged opposite to the upper extrusion seat (63); a battery to be tested is placed on the lower extrusion seat (55); and the pressure transmitter (51) is electrically connected to the industrial computer (2).

2. A battery compression test device according to claim 1, characterized in that: The lower extrusion seat (55) and the upper extrusion seat (63) have the same structure and are arranged in a mirror image. The upper extrusion seat (63) comprises a connecting plate (632), a heat insulation pad (633), a heating block (634), a mica insulation pad (635), a current collector (636) and a current collecting plate (637) which are arranged in sequence from top to bottom, and an inner protective cover (631) which is arranged on the outside of the connecting plate (632), the heat insulation pad (633), the heating block (634), the mica insulation pad (635), the current collector (636) and the current collecting plate (637). The heating block (634) and the current collector (636) are electrically connected to the industrial computer (2).

3. A battery compression test device according to claim 1, characterized in that: A lower connecting seat (52) is arranged on the upper part of the pressure transmitter (51); a spring (53) is arranged between the lower connecting seat (52) and the lower extrusion seat (55).

4. A battery compression test device according to claim 1 or 2, characterized in that: A plurality of guide slide bars (81) are arranged inside the workbench (1) and along the longitudinal direction; the guide slide bars (81) are placed inside the outer protective cover (7); a first slide plate (54) is arranged between the spring (53) and the lower extrusion seat (55); a second slide plate (62) is arranged between the motor screw rod (31) and the upper extrusion seat (63); guide slide sleeves (82) are respectively arranged at the ends of the first slide plate (54) and the second slide plate (62); the guide slide sleeves (82) are slidably arranged on the guide slide bars (81).

5. A battery compression test device according to claim 1, 2 or 3, characterized in that: The reducer (3) is provided with a hand wheel (4).

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