CN115032510A - Battery cell insulation testing device of lithium ion battery and testing method thereof - Google Patents

Abstract

The invention discloses a battery core insulation testing device of a lithium ion battery and a testing method thereof, comprising a base and a workbench arranged above the base, a bracket is fixed on the top of the workbench, a test equipment is fixedly installed on the bracket, and the workbench passes through The lifting mechanism is arranged above the base, and the top of the worktable is provided with a clamping mechanism. The clamping mechanism includes a hollow ring fixed on the top of the worktable, and a gear ring rotates inside the hollow ring. The invention relates to the technical field of lithium ion batteries. The battery cell insulation testing device and the testing method for the lithium ion battery, through the setting of the clamping mechanism, is convenient for fast positioning and clamping of the battery cell, and through the setting of the fine extrusion mechanism therein, it is convenient to freely measure the electricity according to the shape of the battery cell The core is clamped, and the clamping stability is high. Through the setting of the lifting mechanism, it is convenient to freely adjust the height of the worktable, which is convenient for different users to use, and effectively reduces the limitations of use.

Description

Cell insulation testing device and testing method for lithium ion battery

technical field

The invention relates to the technical field of lithium ion batteries, in particular to a battery cell insulation testing device and a testing method thereof for lithium ion batteries.

Background technique

Lithium-ion battery: is a secondary battery (rechargeable battery) that mainly relies on the movement of lithium ions between the positive and negative electrodes to work. During the charging and discharging process, Li+ intercalates and deintercalates back and forth between the two electrodes: during charging, Li+ is deintercalated from the positive electrode, intercalated into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; during discharge, the opposite is true. Lithium-based batteries are divided into lithium batteries and lithium-ion batteries. Cell phones and laptops use lithium-ion batteries, commonly known as lithium-ion batteries. Batteries generally use materials containing lithium as electrodes, which are the representatives of modern high-performance batteries. The real lithium battery is rarely used in daily electronic products due to its high risk.

The existing lithium-ion battery cells need to be tested for insulation, and the cells need to be positioned before the test. Because some cells are irregular in shape, it is not easy to clamp tightly, which will affect the test work. It is inconvenient for the test device to freely adjust the height according to the usage requirements. Therefore, the present invention provides a cell insulation test device and a test method for a lithium ion battery to solve the above-mentioned problems.

SUMMARY OF THE INVENTION

In view of the deficiencies of the prior art, the present invention provides a battery cell insulation test device and a test method for the lithium ion battery, which solves the problem that the existing lithium ion battery cells need to be tested for insulation. The positioning of the core is not easy to hold tightly due to the irregular shape of some cells, which affects the progress of the test work, and the existing test device is not easy to adjust the height freely according to the needs of use.

In order to achieve the above purpose, the present invention is achieved through the following technical solutions: a cell insulation test device for a lithium ion battery, comprising a base and a workbench arranged above the base, a support is fixed on the top of the workbench, and the support The test equipment is fixedly installed on the upper part, the worktable is arranged above the base through the lifting mechanism, and the top of the worktable is provided with a clamping mechanism;

The clamping mechanism includes a hollow ring fixed on the top of the worktable, a gear ring is rotated inside the hollow ring, a fixing plate is fixed on the outer circumference of the hollow ring, a driving cylinder is fixed on the top of the fixing plate, and the driving cylinder is fixed on the top of the fixed plate. A rack is fixed at one end of the driving cylinder, a folded plate is fixed on the top of the hollow ring, a rotating shaft rotates below the folded plate, and a transmission gear meshing with the rack rotates on the surface of the rotating shaft. The outer circumference of the hollow ring is provided with an arc-shaped through groove for use with the transmission gear, the transmission gear meshes with the gear ring, the two sides of the inner wall of the gear ring are provided with extrusion grooves, and both sides of the inner surface of the hollow ring slide through. There are movable rods, the surfaces of the two movable rods are fixed with limit rods, the ends of the movable rods that are close to each other are fixed with a hollow box, and the surfaces of the two movable rods are sleeved with return springs, the hollow boxes are The box is provided with a fine extrusion mechanism.

Preferably, the fine extrusion mechanism includes a sliding plate fixed between two sides of the inner wall of the hollow box, two sliding plates are provided, and the two sliding plates are fixed by connecting rods, and the hollow box has two sliding plates. A screw rod runs through the top thread, the bottom end of the screw rod is rotatably connected with the top of the upper slide plate, and the top end of the screw rod is fixed with a turntable.

Preferably, an extrusion column slides through the inner side of the hollow box, an ejector spring is fixed between one end of the extrusion column and the inner wall of the hollow box, and a wave-shaped tooth is fixed at the bottom of the sliding plate. The surface of the column is provided with a wave clip slot which is used in conjunction with the wave shaper.

Preferably, the lifting mechanism includes a bottom frame fixed on the top of the base, a first movable frame is rotated between two sides of the inner wall of the bottom frame, and a second movable frame is rotated between the outer sides of the first movable frame, A pulley is rotated on the inner side of the second movable frame.

Preferably, guide rails adapted to pulleys are fixed on both sides of the inner wall of the bottom frame, and a hydraulic cylinder is rotatably mounted on the first movable frame, and the hydraulic cylinder is rotatably connected with the second movable frame.

Preferably, sliding blocks are rotated on the inner side of the first movable frame, two of the sliding blocks are slidably installed on the bottom of the workbench, and fixed blocks are rotated on the inner side of the first movable frame. The blocks are fixed to the bottom of the workbench.

The invention also discloses a test method for the cell insulation test device of the lithium ion battery, which specifically includes the following steps:

S1. Place the cell to be tested between the two hollow boxes, then start the driving cylinder to shorten the driving cylinder, and then drive the transmission gear to rotate counterclockwise through the rack, thereby driving the gear ring to rotate clockwise, making the two extrusion grooves Squeeze the two movable rods respectively, so that the two movable rods are close to each other, so that a plurality of extrusion columns are in contact with the surface of the battery core, and each extrusion column has different extension lengths, and then the turntable is rotated, and then the slide plate is driven to slide down by the screw, so that the The wave shaper can be inserted into the wave slot, and then the extrusion column can be positioned; then continue to start the driving cylinder to shorten, and stably position the cell;

S2. According to the needs of use, when the worktable needs to be raised, the hydraulic cylinder is activated and the hydraulic cylinder is shortened, so that the angle between the first movable frame and the second movable frame in the vertical direction becomes smaller, so that the two pulleys are The two guide rails roll, and the two sliders slide to the left at the same time to realize the elevation of the worktable;

S3, and then conduct insulation test work on the cell through the test equipment.

beneficial effect

The invention provides a battery core insulation testing device and a testing method of the lithium ion battery. Compared with the prior art, it has the following beneficial effects:

(1), the battery insulation test device and the test method of the lithium ion battery, by including a hollow ring fixed on the top of the worktable in the clamping mechanism, a gear ring is rotated inside the hollow ring, and a fixed ring is fixed on the outer circumference of the hollow ring The top of the fixed plate is fixed with a driving cylinder, one end of the driving cylinder is fixed with a rack, the top of the hollow ring is fixed with a folded plate, a rotating shaft rotates under the folded plate, and a transmission gear that meshes with the rack rotates on the surface of the rotating shaft , Through the setting of the clamping mechanism, it is convenient to quickly position and clamp the battery cell, and through the setting of the fine extrusion mechanism, it is convenient to freely clamp the battery core according to the shape of the battery core, and the clamping stability is high.

(2), the battery cell insulation test device of the lithium ion battery and the test method thereof, the lifting mechanism includes a bottom frame fixed on the top of the base, and a first movable frame is rotated between the two sides of the inner wall of the bottom frame, and the first movable frame is rotated. A second movable frame rotates between the outer sides of the frame, and pulleys are rotated on the inner side of the second movable frame. Through the setting of the lifting mechanism, it is convenient to freely adjust the height of the worktable, which is convenient for different users to use, and effectively reduces the use limitation. sex.

Description of drawings

Fig. 1 is the perspective view of the structure of the present invention;

Fig. 2 is the schematic diagram of the clamping mechanism of the present invention;

Fig. 3 is the schematic diagram of the internal structure of the hollow ring of the present invention;

Fig. 4 is the schematic diagram of the internal structure of the hollow box of the present invention;

Fig. 5 is the partial enlarged view of A place in Fig. 3 of the present invention;

FIG. 6 is a partial enlarged view of B in FIG. 4 of the present invention.

In the picture: 1-base, 2-table, 3-support, 4-test equipment, 5-lifting mechanism, 51-bottom frame, 52-first movable frame, 53-second movable frame, 54-pulley, 55 -Guide rail, 56-hydraulic cylinder, 57-slider, 58-fixed block, 6-clamping mechanism, 61-hollow ring, 62-gear ring, 63-fixed plate, 64-drive cylinder, 65-rack, 66 -Folding plate, 67-rotating shaft, 68-transmission gear, 69-arc through groove, 610-extrusion groove, 611-active rod, 612-active rod, 613-hollow box, 614-return spring, 615-fine extrusion Pressing mechanism, 6151-slide plate, 6152-connecting rod, 6153-screw, 6154-turntable, 6155-extrusion column, 6156-ejection spring, 6157-wave shaper, 6158-wave slot.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

1-6, the present invention provides a technical solution: a cell insulation testing device for lithium-ion batteries, comprising a base 1 and a workbench 2 arranged above the base 1, and a bracket 3 is fixed on the top of the workbench 2 , the test equipment 4 is fixedly installed on the bracket 3, the worktable 2 is arranged above the base 1 through the lifting mechanism 5, and the top of the worktable 2 is provided with a clamping mechanism 6;

The clamping mechanism 6 includes a hollow ring 61 fixed on the top of the table 2, a gear ring 62 is rotated inside the hollow ring 61, a fixing plate 63 is fixed on the outer circumference of the hollow ring 61, and a driving cylinder 64 is fixed on the top of the fixing plate 63, The external power supply is electrically connected and controlled by a control switch, a rack 65 is fixed at one end of the driving cylinder 64, a folding plate 66 is fixed on the top of the hollow ring 61, a rotating shaft 67 rotates under the folding plate 66, and the surface of the rotating shaft 67 rotates with The transmission gear 68 meshing with the rack 65, the outer circumference of the hollow ring 61 is provided with an arc-shaped through groove 69 for use with the transmission gear 68, the transmission gear 68 is meshed with the gear ring 62, and the inner wall of the gear ring 62 is provided with extrusions on both sides. The pressing groove 610, the two pressing grooves 610 are arranged symmetrically in the center, the two sides of the inner surface of the hollow ring 61 slide through the movable rods 611, the surfaces of the two movable rods 611 are fixed with the limiting rods 612, and the movable rods 611 are close to each other A hollow box 613 is fixed on one end of the two movable rods 611 , and a return spring 614 is sleeved on the surfaces of the two movable rods 611 to facilitate the rapid reset of the hollow box 61 .

In the embodiment of the present invention, the fine extrusion mechanism 615 includes a sliding plate 6151 that is slidably installed between two sides of the inner wall of the hollow box 613. There are two sliding plates 6151, and the two sliding plates 6151 are fixed by a connecting rod 6152. The hollow box The top thread of 613 runs through a screw 6153, the bottom end of the screw 6153 is rotatably connected to the top of the upper slide 6151, the top of the screw 6153 is fixed with a turntable 6154, and the inner side of the hollow box 613 slides through an extrusion column 6155, a plurality of extrusion columns 6155 is a group, which is divided into upper and lower groups. An ejector spring 6156 is fixed between one end of the extrusion column 6155 and the inner wall of the hollow box 613, which is convenient for the rapid reset of the extrusion column 6155. The bottom of the slide plate 6151 is fixed with a wave-shaped tooth 6157. The surface of the extrusion column 6155 is provided with a wave slot 6158 which is used in cooperation with the wave shaper 6157 .

In the embodiment of the present invention, the lifting mechanism 5 includes a bottom frame 51 fixed on the top of the base 1 , a first movable frame 52 is rotated between two sides of the inner wall of the bottom frame 51 , and a second movable frame 52 is rotated between the outer sides of the first movable frame 52 The movable frame 53 and the inner side of the second movable frame 53 are all rotated with pulleys 54, both sides of the inner wall of the bottom frame 51 are fixed with guide rails 55 that are adapted to the pulleys 54, and the first movable frame 52 is rotated and installed with a hydraulic cylinder 56, It is electrically connected to an external power source and controlled by a control switch. The hydraulic cylinder 56 is rotatably connected to the second movable frame 53. The inner side of the first movable frame 52 has a sliding block 57, and the two sliding blocks 57 are slidably installed on the workbench. 2 , the inner side of the first movable frame 52 has fixed blocks 58 rotating, and the two fixed blocks 58 are both fixed on the bottom of the workbench 2 .

The invention also discloses a test method for the cell insulation test device of the lithium ion battery, which specifically includes the following steps:

S1. Place the battery cell to be tested between the two hollow boxes 613, then start the driving cylinder 64, the driving cylinder 64 is shortened, and then drive the transmission gear 68 to rotate counterclockwise through the rack 65 (top view), thereby driving the gear ring 62 to clockwise Clockwise rotate, so that the two extrusion grooves 610 squeeze the two movable rods 611 respectively, so that the two movable rods 611 are close to each other, so that the plurality of extrusion columns 6155 are in contact with the surface of the cell, and each extrusion column 6155 protrudes by a length Different, then turn the turntable 6154, and then drive the slide plate 6151 to slide down through the screw 6153, so that the wave shaper 6157 can be inserted into the wave slot 6158, and then the extrusion column 6155 is positioned; then continue to start the driving cylinder 64 to shorten, and the battery core for stable positioning;

S2. According to the needs of use, when the worktable 2 needs to be raised, the hydraulic cylinder 56 is activated, and the hydraulic cylinder 56 is shortened, so that the angle between the first movable frame 52 and the second movable frame 53 in the vertical direction becomes smaller, thereby making The two pulleys 54 roll along the two guide rails 55 respectively, and the two sliders 57 slide to the left at the same time, so that the worktable 2 is raised;

S3, and then perform insulation test work on the battery cell through the test equipment 4.

Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

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, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. A battery cell insulation test device of a lithium ion battery, comprising a base (1) and a workbench (2) arranged above the base (1), a support (3) is fixed on the top of the workbench (2), A test device (4) is fixedly installed on the bracket (3), and is characterized in that: the workbench (2) is arranged above the base (1) through a lifting mechanism (5), and the workbench (2) is arranged above the base (1). The top is provided with a clamping mechanism (6); The clamping mechanism (6) includes a hollow ring (61) fixed on the top of the workbench (2), a gear ring (62) is rotated inside the hollow ring (61), and an outer circumference of the hollow ring (61) is rotated A fixing plate (63) is fixed, a driving cylinder (64) is fixed on the top of the fixing plate (63), a rack (65) is fixed at one end of the driving cylinder (64), and the hollow ring (61) is A folded plate (66) is fixed on the top, a rotating shaft (67) rotates below the folded plate (66), and a transmission gear (68) meshing with the rack (65) is rotated on the surface of the rotating shaft (67), The outer circumference of the hollow ring (61) is provided with an arc-shaped through groove (69) used in cooperation with the transmission gear (68), the transmission gear (68) meshes with the gear ring (62), and the inner wall of the gear ring (62) There are extrusion grooves (610) on both sides of the hollow ring (61), and movable rods (611) slide through both sides of the inner surface of the hollow ring (61), and the surfaces of the two movable rods (611) are fixed and limited Rods (612), the ends of the movable rods (611) that are close to each other are fixed with a hollow box (613), the surfaces of the two movable rods (611) are sleeved with return springs (614), and the hollow boxes A fine pressing mechanism (615) is provided on (613). 2. The cell insulation testing device of a lithium-ion battery according to claim 1, wherein the fine extrusion mechanism (615) comprises a device that is fixed and slidably mounted between two sides of the inner wall of the hollow box (613). There are two sliding plates (6151), the two sliding plates (6151) are fixed by connecting rods (6152), and the top thread of the hollow box (613) has a screw (6153) running through it. ), the bottom end of the screw rod (6153) is rotatably connected with the top of the upper slide plate (6151), and the top end of the screw rod (6153) is fixed with a turntable (6154). 3. The cell insulation testing device of a lithium ion battery according to claim 2, wherein an extrusion column (6155) is slidably penetrated through the inner side of the hollow box (613), and the extrusion column ( An ejector spring (6156) is fixed between one end of 6155) and the inner wall of the hollow box (613), a wave-shaped tooth (6157) is fixed at the bottom of the slide plate (6151), and the surface of the extrusion column (6155) is provided with There is a wave slot (6158) used in conjunction with the wave shaper (6157). 4. The cell insulation testing device of a lithium ion battery according to claim 3, wherein the lifting mechanism (5) comprises a bottom frame (51) fixed on the top of the base (1), and the bottom A first movable frame (52) is rotated between two sides of the inner wall of the frame (51), and a second movable frame (53) is rotated between the outer sides of the first movable frame (52). A pulley (54) is rotated on the inner side of 53). 5. The battery cell insulation testing device of a lithium ion battery according to claim 4, characterized in that: both sides of the inner wall of the bottom frame (51) are fixed with guide rails ( 55), a hydraulic cylinder (56) is rotatably installed on the first movable frame (52), and the hydraulic cylinder (56) is rotatably connected with the second movable frame (53). 6 . The battery cell insulation test device of a lithium ion battery according to claim 5 , wherein the inner side of the first movable frame ( 52 ) is rotated with a slider ( 57 ), and two sliders ( 57 ) are rotated on the inner side of the first movable frame ( 52 ). The blocks (57) are all slidably installed on the bottom of the workbench (2), a fixed block (58) is rotated on the inner side of the first movable frame (52), and the two fixed blocks (58) are fixed on the workbench (58). 2) at the bottom. 7. A test method implementing the battery cell insulation test device of a lithium ion battery according to claim 6, characterized in that: it specifically comprises the following steps: S1. Place the battery cell to be tested between the two hollow boxes (613), then start the driving cylinder (64), the driving cylinder (64) is shortened, and then drive the transmission gear (68) to rotate counterclockwise through the rack (65). (top view), thereby driving the gear ring (62) to rotate clockwise, so that the two pressing grooves (610) squeeze the two movable rods (611) respectively, thereby making the two movable rods (611) close to each other, so that multiple The extrusion column (6155) is in contact with the surface of the battery cell, and each extrusion column (6155) has different protruding lengths, and then the turntable (6154) is rotated, and then the sliding plate (6151) is driven down by the screw (6153), so that the wave-shaped teeth (6157) ) can be inserted into the wave slot (6158), and then the extrusion column (6155) is positioned; then continue to activate the driving cylinder (64) to shorten, and the battery core is stably positioned; S2. When the worktable (2) needs to be raised according to the needs of use, the hydraulic cylinder (56) is activated, and the hydraulic cylinder (56) is shortened, so that the first movable frame (52) and the second movable frame (53) are The included angle in the vertical direction becomes smaller, so that the two pulleys (54) roll along the two guide rails (55) respectively, and the two sliders (57) slide to the left at the same time, so that the worktable (2) is raised; S3, and then perform insulation test work on the cell through the test equipment (4).

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