CN215525405U

CN215525405U - Testing arrangement of lithium cell book core liquid absorption capacity

Info

Publication number: CN215525405U
Application number: CN202121861608.5U
Authority: CN
Inventors: 周亚辉; 闫晓宾; 管利娜; 郭永萍; 孟小平; 袁国锋
Original assignee: Xinxiang Huarui Lithium New Energy Co ltd
Current assignee: Xinxiang Huarui Lithium New Energy Co ltd
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2022-01-14
Anticipated expiration: 2031-08-10

Abstract

The utility model discloses a device for testing the liquid absorption amount of a lithium battery winding core, which relates to the technical field of lithium batteries, and particularly relates to a device for testing the liquid absorption amount of a lithium battery winding core. This testing arrangement of core liquid absorption volume is rolled up to lithium cell through the cooperation setting of weighing apparatus, display screen, suspension rope and seal receptacle, has changed the current mode of measurationing at the in-process that uses, no longer takes out the core of lithium cell core back and weighs, directly relies on the weight transform before and after the lithium cell gets into liquid directly to measure the liquid absorption volume that the core was rolled up to the lithium cell, the effectual error that has avoided produces, has improved measuring accuracy nature greatly to measurement process is simple and convenient, and measurement efficiency is high.

Description

Testing arrangement of lithium cell book core liquid absorption capacity

Technical Field

The utility model relates to the technical field of lithium batteries, in particular to a device for testing the liquid absorption capacity of a lithium battery winding core.

Background

A "lithium battery" is a type of battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a positive/negative electrode material. Lithium metal batteries were first proposed and studied by Gilbert n.lewis in 1912. In the 70 s of the 20 th century, m.s.whitetingham proposed and began to study lithium ion batteries. Because the chemical characteristics of lithium metal are very active, the requirements on the environment for processing, storing and using the lithium metal are very high. With the development of scientific technology, lithium batteries have become the mainstream. Lithium batteries can be broadly classified into two types: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain lithium in the metallic state and are rechargeable. The fifth generation of rechargeable batteries, lithium metal batteries, was born in 1996, and the safety, specific capacity, self-discharge rate and cost performance of rechargeable batteries were all superior to those of lithium ion batteries. Due to its own high technical requirement limits, only a few countries of companies are producing such lithium metal batteries.

The quality of a winding core of the lithium battery is directly influenced on the overall quality of the lithium battery as an electrode of the lithium battery, so that the winding core of the lithium battery needs to be subjected to multiple items of detection in the production process of the lithium battery, the liquid absorption amount of the winding core of the lithium battery is a weight standard for detecting the quality of the winding core, three ways of detection are adopted in the prior art, namely, the weight difference before and after the winding core of the lithium battery absorbs electrolyte is measured by a weighing method, and the liquid absorption amount of the winding core of the lithium battery is calculated; measuring by a gradient experiment method, namely injecting electrolyte with different gradient amounts into the winding core, and evaluating the comprehensive performance of the battery so as to determine the liquid absorption amount of the winding core of the lithium battery; and a theoretical calculation method, namely, the liquid absorption amount of the lithium battery roll core is theoretically calculated according to the porosity of different components of the roll core.

Among the three measuring methods, the weighing method has higher measuring error, the gradient experiment method has high manpower and material input force, the efficiency is low, and the theoretical calculation method has the problem of large deviation from the actual method, so a testing device with high measuring precision and high measuring speed is needed

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides a device for testing the liquid absorption capacity of a lithium battery winding core, which solves the problems in the background technology.

(II) technical scheme

In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a lithium cell rolls up test device of core imbibition volume, includes the lower plate, the both ends fixedly connected with side extension board of lower plate upper surface, the side sliding connection of side extension board has the lift mounting panel, be equipped with the threaded connection hole on the lift mounting panel, the position symmetrical with the threaded connection hole on the lift mounting panel is equipped with the direction jack, the lower fixed surface of lift mounting panel is connected with the weigher, the front of weigher is equipped with the display screen, the bottom of weigher is equipped with suspension rope, the last fixed surface of lower plate is connected with deposits the case, the top of depositing the case is equipped with dustproof socket, it has the seal receptacle to peg graft in the dustproof socket, the both sides fixedly connected with L type at the top of seal receptacle hangs the pole, the other end fixed connection that the L type hung the pole hangs the lower surface at the lift mounting panel.

Optionally, the side of lift mounting panel is equipped with the direction spout, the both sides fixedly connected with direction slider of lift mounting panel, direction slider sliding connection is in the direction spout.

Optionally, the top of the side supporting plate side surfaces is fixedly connected with a top connecting plate, the lower surface of the top connecting plate on one side is fixedly connected with a guide inserting rod, one end of the guide inserting rod penetrates through a guide inserting hole and is fixedly connected to the upper surface of the lower base plate, and the lower surface of the top connecting plate on the other side is fixedly connected with a protection box.

Optionally, a driving motor is fixedly connected to the side wall of the inner surface of the protection box, a driving gear is fixedly connected to the output end of the driving motor, a lifting screw is rotatably connected to the bottom of the protection box, threads on the outer surface of the lifting screw are matched with threads on the inner surface of the threaded connecting hole, a driven gear is fixedly connected to one end, inserted into the protection box, of the lifting screw, the other end of the lifting screw is rotatably connected to the upper surface of the lower base plate, and the driven gear is meshed with the driving gear.

Optionally, the seal receptacle includes lower base, the last fixed surface of lower base is connected with the bracing piece, the other end fixedly connected with upper cover plate of bracing piece, be equipped with the perforation on the upper cover plate.

Optionally, the side wall of the inner surface of the storage box is fixedly connected with a heat preservation block, the upper surface of the storage box is fixedly connected with a control switch, the position of the control switch corresponds to the position of the L-shaped suspension rod, and the control switch is electrically connected with the driving motor through a lead.

(III) advantageous effects

The utility model provides a device for testing the liquid absorption amount of a lithium battery winding core, which has the following beneficial effects:

1. this testing arrangement of core liquid absorption volume is rolled up to lithium cell through the cooperation setting of weighing apparatus, display screen, suspension rope and seal receptacle, has changed the current mode of measurationing at the in-process that uses, no longer takes out the core of lithium cell core back and weighs, directly relies on the weight transform before and after the lithium cell gets into liquid directly to measure the liquid absorption volume that the core was rolled up to the lithium cell, the effectual error that has avoided produces, has improved measuring accuracy nature greatly to measurement process is simple and convenient, and measurement efficiency is high.

2. This testing arrangement of core volume of inhaling liquid volume is rolled up to lithium cell, through driving motor, lifting screw, lift mounting panel and control switch's cooperation setting, the in-process that uses can be convenient controlling means's lift to and the location after the decline, make the core of the lithium cell submergence that can rapid stabilization in electrolyte, the effectual efficiency of software testing that has guaranteed, through the setting of seal receptacle, electrolyte and external contact in the in-process that uses can less guard box, reduce the external pollution that electrolyte received.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a front cross-sectional structural schematic view of the present invention;

FIG. 3 is a side cross-sectional structural schematic view of the protective housing of the present invention;

fig. 4 is a sectional view schematically showing the construction of the storage box of the present invention.

In the figure: 1. a lower base plate; 2. a side support plate; 3. a lifting mounting plate; 4. connecting a threaded hole; 5. a guide jack; 6. a scale; 7. a display screen; 8. a suspension rope; 9. a storage box; 10. a dustproof jack; 11. a sealing seat; 1101. a lower base; 1102. a support bar; 1103. an upper cover plate; 1104. perforating; 12. an L-shaped suspension rod; 13. a guide chute; 14. a guide slider; 15. a top connection plate; 16. a guide insertion rod; 17. a protective box; 18. a drive motor; 19. a driving gear; 20. lifting a screw rod; 21. a driven gear; 22. a heat preservation block; 23. and controlling the switch.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1 to 4, the present invention provides a technical solution: a testing device for the liquid absorption amount of a lithium battery winding core comprises a lower base plate 1, two ends of the upper surface of the lower base plate 1 are fixedly connected with side support plates 2, the side surfaces of the side support plates 2 are slidably connected with a lifting mounting plate 3, the side surfaces of the lifting mounting plate 3 are provided with guide chutes 13, two sides of the lifting mounting plate 3 are fixedly connected with guide sliders 14, the guide sliders 14 are slidably connected in the guide chutes 13, the lifting mounting plate 3 is provided with threaded connection holes 4, guide jacks 5 are arranged at positions symmetrical to the threaded connection holes 4 on the lifting mounting plate 3, top connecting plates 15 are fixedly connected at the top parts of the side surfaces of the two side support plates 2, a guide inserting rod 16 is fixedly connected to the lower surface of the top connecting plate 15 at one side, one end of the guide inserting rod 16 penetrates through the guide jacks 5 and is fixedly connected to the upper surface of the lower base plate 1, and a protection box 17 is fixedly connected to the lower surface of the top connecting plate 15 at the other side, a driving motor 18 is fixedly connected on the side wall of the inner surface of the protective box 17, a driving gear 19 is fixedly connected at the output end of the driving motor 18, a lifting screw 20 is rotatably connected at the bottom of the protective box 17, the thread of the outer surface of the lifting screw 20 is matched with the thread of the inner surface of the threaded connecting hole 4, a driven gear 21 is fixedly connected at one end of the lifting screw 20 inserted in the protective box 17, the other end of the lifting screw 20 is rotatably connected on the upper surface of the lower base plate 1, a weighing device 6 is fixedly connected at the lower surface of the lifting mounting plate 3, which is meshed with the driving gear 19, of the driven gear 21, a display screen 7 is arranged on the front surface of the weighing device 6, a suspension rope 8 is arranged at the bottom of the weighing device 6, a storage box 9 is fixedly connected on the upper surface of the lower base plate 1, a heat preservation block 22 is fixedly connected on the side wall of the inner surface of the storage box 9, and a control switch 23 is fixedly connected on the upper surface of the storage box 9, the position of the control switch 23 corresponds to the position of the L-shaped suspension rod 12, the control switch 23 is electrically connected with the driving motor 18 through a lead, the lithium battery winding core can be quickly and stably immersed in the electrolyte through the matching arrangement of the driving motor 18, the lifting lead screw 20, the lifting mounting plate 3 and the control switch 23, the lifting of the control device can be conveniently carried out in the use process, and the descending positioning is carried out, so that the lithium battery winding core can be quickly and stably immersed in the electrolyte, the test efficiency is effectively ensured, the contact between the electrolyte in the protective box 17 and the outside can be reduced in the use process through the arrangement of the sealing seat 11, the external pollution on the electrolyte is reduced, the top of the storage box 9 is provided with a dustproof socket 10, the sealing seat 11 is inserted in the dustproof socket 10, the sealing seat 11 comprises a lower base 1101, the upper surface of the lower base 1101 is fixedly connected with a support rod 1102, and the other end of the support rod 1102 is fixedly connected with an upper cover plate 1103, be equipped with the perforation 1104 on the upper cover plate 1103, through weigher 6, display screen 7, the cooperation setting of suspension rope 8 and seal receptacle 11, the in-process of using has changed current mode of measurationing, no longer take out the lithium cell roll core back again and weigh, the weight transform direct measurement that directly relies on the lithium cell to get into around the liquid absorbs liquid volume that the lithium cell rolled the core, the effectual error that has avoided produces, the measuring accuracy nature has been improved greatly, and measurement process is simple and convenient, high measurement efficiency, the both sides fixedly connected with L type suspension rod 12 at the top of seal receptacle 11, the other end fixed connection of L type suspension rod 12 is at the lower surface of lift mounting panel 3.

When the lithium battery roll core is used, a lithium battery roll core is placed between an upper cover plate 1103 and a lower base 1101, and is fastened and fixed through a suspension rope 8, then a driving motor 18 is started, the driving motor 18 drives a lifting screw rod 20 to rotate through the meshing of a driving gear 19 and a driven gear 21, the lifting screw rod 20 drives a lifting mounting plate 3 to descend in the rotating process, a sealing seat 11 is driven to descend through an L-shaped suspension rod 12 in the descending process of the lifting mounting plate 3, after the sealing seat 11 descends to a set position, the L-shaped suspension rod 12 triggers a control switch 23 to stop the rotation of the driving motor 18, the descending of the lifting mounting plate 3 stops at the moment, the lithium battery roll core is immersed in electrolyte, after sufficient immersion time, the lithium battery roll core is full of electrolyte, the weight of the lithium battery roll core changes at the moment, and the initial weight of the lithium battery roll core is subtracted from the weight of the lithium battery roll core, the weight of the electrolyte with the same volume as the lithium battery roll core is added, namely the quality of the electrolyte absorbed by the lithium battery roll core, so that the liquid absorption amount of the lithium battery roll core can be rapidly measured.

In conclusion, the utility model changes the existing measuring mode in the using process through the matching arrangement of the weighing device 6, the display screen 7, the suspension rope 8 and the sealing seat 11, the lithium battery roll core is not taken out and then weighed, the liquid absorption amount of the lithium battery roll core is directly measured by the weight change before and after the lithium battery enters the liquid, the error generation is effectively avoided, the measuring accuracy is greatly improved, the measuring process is simple and convenient, the measuring efficiency is high, the lifting device can be conveniently controlled to lift in the using process and positioned after descending through the matching arrangement of the driving motor 18, the lifting screw rod 20, the lifting mounting plate 3 and the control switch 23, so that the lithium battery roll core can be quickly and stably immersed in the electrolyte, the testing efficiency is effectively ensured, the contact between the electrolyte in the protective box 17 and the outside in the using process can be reduced through the arrangement of the sealing seat 11, and external pollution to the electrolyte is reduced.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a lithium cell rolls up testing arrangement of core liquid absorption capacity, includes lower plate (1), its characterized in that: the two ends of the upper surface of the lower bottom plate (1) are fixedly connected with side supporting plates (2), the side surfaces of the side supporting plates (2) are connected with a lifting mounting plate (3) in a sliding mode, threaded connecting holes (4) are formed in the lifting mounting plate (3), guide jacks (5) are formed in the positions, symmetrical to the threaded connecting holes (4), of the lifting mounting plate (3), a weighing device (6) is fixedly connected to the lower surface of the lifting mounting plate (3), a display screen (7) is arranged on the front surface of the weighing device (6), a hanging rope (8) is arranged at the bottom of the weighing device (6), a storage box (9) is fixedly connected to the upper surface of the lower bottom plate (1), a dustproof socket (10) is arranged at the top of the storage box (9), a sealing seat (11) is inserted in the dustproof socket (10), and L-shaped hanging rods (12) are fixedly connected to the two sides of the top of the sealing seat (11), the other end of the L-shaped suspension rod (12) is fixedly connected to the lower surface of the lifting mounting plate (3).

2. The device for testing the liquid absorption capacity of the lithium battery winding core according to claim 1, is characterized in that: the side of lift mounting panel (3) is equipped with direction spout (13), the both sides fixedly connected with direction slider (14) of lift mounting panel (3), direction slider (14) sliding connection is in direction spout (13).

3. The device for testing the liquid absorption capacity of the lithium battery winding core according to claim 1, is characterized in that: the top of two side extension board (2) side all fixedly connected with top connecting plate (15), one side the lower fixed surface of top connecting plate (15) is connected with direction inserted bar (16), the one end of direction inserted bar (16) is passed direction jack (5) fixed connection and is in the upper surface of lower plate (1), the lower fixed surface of opposite side top connecting plate (15) is connected with guard box (17).

4. The device for testing the liquid absorption capacity of the lithium battery winding core according to claim 3, is characterized in that: the safety protection box is characterized in that a driving motor (18) is fixedly connected to the side wall of the inner surface of the protection box (17), a driving gear (19) is fixedly connected to the output end of the driving motor (18), a lifting screw rod (20) is rotatably connected to the bottom of the protection box (17), threads on the outer surface of the lifting screw rod (20) are matched with threads on the inner surface of the threaded connecting hole (4), a driven gear (21) is fixedly connected to one end of the lifting screw rod (20) inserted into the protection box (17), the other end of the lifting screw rod (20) is rotatably connected to the upper surface of the lower base plate (1), and the driven gear (21) is meshed with the driving gear (19).

5. The device for testing the liquid absorption capacity of the lithium battery winding core according to claim 1, is characterized in that: the sealing seat (11) comprises a lower base (1101), a supporting rod (1102) is fixedly connected to the upper surface of the lower base (1101), an upper cover plate (1103) is fixedly connected to the other end of the supporting rod (1102), and a through hole (1104) is formed in the upper cover plate (1103).

6. The device for testing the liquid absorption capacity of the lithium battery winding core according to claim 1, is characterized in that: the heat preservation box is characterized in that a heat preservation block (22) is fixedly connected to the side wall of the inner surface of the storage box (9), a control switch (23) is fixedly connected to the upper surface of the storage box (9), the position of the control switch (23) corresponds to the position of the L-shaped suspension rod (12), and the control switch (23) is electrically connected with the driving motor (18) through a lead.