CN210690470U

CN210690470U - High-throughput screening device for lithium battery materials

Info

Publication number: CN210690470U
Application number: CN201921437484.0U
Authority: CN
Inventors: 谢海军; 张保平; 王兆雄
Original assignee: Jinshan Lithium Science Shanghang Research Institute Co Ltd
Current assignee: FUJIAN JINSHAN LIKE NEW MATERIAL Co.,Ltd.
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-06-05
Anticipated expiration: 2029-08-30

Abstract

The utility model discloses a high-flux screening device for lithium battery materials, which belongs to the field of lithium batteries, and comprises a test core plate, a lifting component and a probe component, wherein the test core plate is provided with a plurality of micro-areas, and the plurality of micro-areas are provided with electric cores; be provided with the core mounting disc on the lifting unit, core mounting disc internal diameter and test core external diameter phase-match, the core mounting disc is provided with two joint breachs, is provided with on the test core with joint breach complex two location auricles. Through location auricle and joint breach cooperation, the test core can the easy to assemble location, and the cooperation of test core and core mounting disc makes the location accurate simultaneously, and the test core dismantles conveniently to can a set ofly under the quick replacement after having tested a set of electric core, improve the efficiency of test.

Description

High-throughput screening device for lithium battery materials

Technical Field

The utility model relates to a lithium cell field especially relates to a lithium cell material high flux sieving mechanism.

Background

The lithium battery is an important development direction of the secondary battery due to the advantages of excellent safety and cycle performance, and meanwhile, the full-solid-state lithium battery has larger market application potential compared with other sodium ion batteries due to the small atomic radius of the metal lithium element and the lowest electrochemical potential. The three core factors affecting the performance of an all-solid-state lithium battery are safety, specific capacity and high rate characteristics. Key materials affecting the performance of lithium batteries include a positive electrode material, an electrolyte material, a negative electrode material, a second current collector layer, a first current collector layer, and the like. One of the main factors for determining the specific energy is the characteristics of the positive and negative electrode materials of the lithium battery, and the electrolyte material and the electrode material affect the safety and the rate characteristics. Therefore, how to increase the research and development speed of the material of the lithium battery has become a critical problem that the development of the lithium battery needs to be solved urgently. The high-throughput material experiment is a rapid material screening method meeting the requirements, and the essence of the method is that rapid systematic screening of related material systems is realized by increasing the number of experimental samples in unit time.

Chinese patent publication No. CN207601282U discloses a substrate device and a high-throughput screening device for lithium battery materials. The utility model discloses a basement device and lithium cell material high flux screening installation prepare a plurality of electricity core through setting up a plurality of subregion, change the parameter on same layer and control the parameter uniformity on other layers in a plurality of electricity cores and in order to change the high flux screening of layer material.

The existing high-flux screening device is troublesome to install when being used for screening test, and needs to spend more time to replace a next group of battery cores, thereby influencing the detection efficiency.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to solve the technical problem that a lithium battery material high flux sieving mechanism is proposed, through location auricle and joint breach cooperation, the test core can easy to assemble location, and the test core dismantles conveniently to can be a set ofly under the quick replacement after having tested a set of electric core, improve the efficiency of test.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a high-flux screening device for lithium battery materials, which comprises a test core plate, a lifting assembly and a probe assembly, wherein the test core plate is provided with a plurality of micro areas, and the plurality of micro areas are provided with battery cores; be provided with the core mounting disc on the lifting unit, core mounting disc internal diameter and test core external diameter phase-match, the core mounting disc is provided with two joint breachs, is provided with on the test core with joint breach complex two location auricles.

The utility model discloses preferred technical scheme lies in, and probe subassembly below is provided with a plurality of anodal probes that correspond with the subregion, and the inside bottom of core mounting disc is provided with a plurality of negative pole probes that correspond with the subregion.

The utility model has the preferable technical proposal that the lifting component also comprises a fixed cross bar and a telescopic cylinder, two guide rods are arranged at the lower side of the core plate mounting disc, and the two guide rods are both connected with the fixed cross bar in a sliding way; the telescopic cylinder is fixed on the fixed cross rod, and the power output end of the telescopic cylinder is fixedly connected with the lower side of the core plate mounting disc.

The utility model discloses preferred technical scheme lies in, is provided with two sliding sleeves on the fixed horizontal pole, guide arm and sliding sleeve sliding connection.

The utility model discloses preferred technical scheme lies in, and the probe subassembly includes the electrode fixed disk, and on the electrode fixed disk was fixed in the frame, a plurality of anodal probes all were fixed in electrode fixed disk below.

The utility model discloses preferred technical scheme lies in, and the test core body is insulating material, and the equal electrical property in both sides switches on about the test core subregion part.

The utility model discloses preferred technical scheme lies in, and the thickness of location auricle is less than the thickness of test core board, and when the bottom surface subsides of location auricle and joint breach were leveled, the top of negative pole probe offset with the downside of testing the core board.

The utility model has the advantages that:

the utility model provides a high-flux screening device for lithium battery materials, which comprises a test core plate, a lifting assembly and a probe assembly, wherein the test core plate is provided with a plurality of micro areas, and the plurality of micro areas are provided with battery cores; be provided with the core mounting disc on the lifting unit, core mounting disc internal diameter and test core external diameter phase-match, the core mounting disc is provided with two joint breachs, is provided with on the test core with joint breach complex two location auricles. Through location auricle and joint breach cooperation, the test core can the easy to assemble location, and the cooperation of test core and core mounting disc makes the location accurate simultaneously, and the test core dismantles conveniently to can a set ofly under the quick replacement after having tested a set of electric core, improve the efficiency of test.

Drawings

Fig. 1 is a schematic diagram of a three-dimensional explosion structure of a high-throughput screening apparatus for lithium battery materials according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a three-dimensional explosive structure ii of a high-throughput screening apparatus for lithium battery materials according to an embodiment of the present invention;

in the figure:

1. a lifting assembly; 2. testing the core board; 3. a probe assembly; 11. a telescopic cylinder; 12. fixing the cross bar; 13. a guide bar; 14. a core plate mounting plate; 21. positioning a lug; 22. a micro-area; 31. a positive electrode probe; 32. an electrode fixing disk; 121. a sliding sleeve; 141. clamping the notch; 142. and (4) a negative electrode probe.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1 and fig. 2, the high-throughput screening apparatus for lithium battery materials provided in this embodiment includes a test core board 2, a lifting assembly 1, and a probe assembly 3, wherein a plurality of micro-areas 22 are disposed on the test core board 2, and each of the plurality of micro-areas 22 is provided with a battery core; the lifting assembly 1 is provided with a core plate mounting disc 14, the inner diameter of the core plate mounting disc 14 is matched with the outer diameter of the test core plate 2, the core plate mounting disc 14 is provided with two clamping notches 141, and the test core plate 2 is provided with two positioning lugs 21 matched with the clamping notches 141. The probe assembly 3 is fixed on the frame, and the fixed cross bar 12 of the lifting assembly 1 is also fixed on the frame. Preferably, a plurality of positive probes 31 corresponding to the micro-areas 22 are disposed below the probe assembly 3, and a plurality of negative probes 142 corresponding to the micro-areas 22 are disposed at the bottom end inside the core plate mounting plate 14. When in detection, the test core board 2 provided with the electric core is placed in the core board mounting disc 14, the negative probe 142 at the bottom side of the core board mounting disc 14 is electrically conducted with the position of the lower side surface micro-area 22 of the test core board 2, and the negative probe 142 is electrically conducted with the position of the upper side surface micro-area 22 of the test core board 2 by controlling the core board mounting disc 14 to move towards the direction of the probe assembly 3. And testing one or more of the capacity, voltage, ionic conductivity, electronic conductivity and cyclic characteristic of each battery cell, wherein the electronic conductivity is tested by using a direct current resistance testing method, the ionic conductivity is tested by using a probe combined with an electrochemical workstation or an alternating current impedance testing method, the voltage is tested by using a cyclic voltammetry method, and the capacity and cyclic characteristic are tested by using constant current cyclic charge and discharge.

Preferably, the lifting assembly 1 further comprises a fixed cross bar 12 and a telescopic cylinder 11, two guide rods 13 are arranged on the lower side of the core plate mounting plate 14, and the two guide rods 13 are both connected with the fixed cross bar 12 in a sliding manner; the telescopic cylinder 11 is fixed on the fixed cross bar 12, and the power output end of the telescopic cylinder 11 is fixedly connected with the lower side of the core plate mounting disc 14. Telescopic cylinder 11 is installed in the middle part of fixed horizontal pole 12, and telescopic cylinder 11's telescopic link passes fixed horizontal pole 12 and is connected with the 14 bottom surfaces of core mounting disc, through the flexible of control telescopic cylinder 11 for just remove test core 2 to anodal probe 31 below, just anodal probe 31 contacts with the little district 22 of up end of test core 2. Two guide rods 13 are respectively positioned at two sides of the telescopic cylinder 11, one end of each guide rod 13 is fixed below the core plate mounting disc 14, furthermore, two sliding sleeves 121 are arranged on the fixed cross rod 12, and the guide rods 13 are connected with the sliding sleeves 121 in a sliding manner. Through the sliding fit of the guide rod 13 and the sliding sleeve 121, the core plate mounting disc 14 is stable when moving up and down, so that the micro-area 22 of the test core plate 2 can be ensured to be just contacted with the positive probe 31 and the negative probe 142.

Preferably, the probe assembly 3 includes an electrode holder 32, the electrode holder 32 is fixed to the frame, and the plurality of positive probes 31 are fixed below the electrode holder 32. Each positive probe 31 is connected with a conducting wire to the detection center, preferably, the body of the test core board 2 is made of insulating material, and the upper side and the lower side of the micro-area 22 part of the test core board 2 can be electrically conducted.

In order to ensure that the test core board 2 is placed horizontally, the thickness of the positioning lug 21 is smaller than that of the test core board 2, and when the positioning lug 21 is flatly attached to the bottom surface of the clamping notch 141, the top end of the negative probe 142 abuts against the lower side surface of the test core board 2. Through the cooperation of the outer side of the test core plate 2 and the inner side wall of the core plate mounting disc 14, the horizontal position of the test core plate 2 can be well limited, and the positioning lug 21 is flatly attached to the bottom surface of the clamping notch 141, so that the height direction of the test core plate 2 can be well positioned, and the test core plate 2 is convenient to install and accurate in positioning.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.

Claims

1. The utility model provides a lithium battery material high flux sieving mechanism which characterized in that:

the device comprises a test core board (2), a lifting assembly (1) and a probe assembly (3), wherein a plurality of micro areas (22) are arranged on the test core board (2), and electric cores are arranged on the micro areas (22);

be provided with core mounting disc (14) on lifting unit (1), core mounting disc (14) internal diameter with test core (2) external diameter phase-match, core mounting disc (14) are provided with two joint breach (141), be provided with on test core (2) with two location auricles (21) of joint breach (141) complex.

2. The high-throughput screening device for lithium battery materials as claimed in claim 1, wherein:

a plurality of positive probes (31) corresponding to the micro-areas (22) are arranged below the probe assembly (3), and a plurality of negative probes (142) corresponding to the micro-areas (22) are arranged at the bottom end inside the core plate mounting disc (14).

3. The high-throughput screening device for lithium battery materials as claimed in claim 1, wherein:

the lifting assembly (1) further comprises a fixed cross rod (12) and a telescopic cylinder (11), two guide rods (13) are arranged on the lower side of the core plate mounting disc (14), and the two guide rods (13) are both in sliding connection with the fixed cross rod (12);

the telescopic cylinder (11) is fixed on the fixed cross rod (12), and the power output end of the telescopic cylinder (11) is fixedly connected with the lower side of the core plate mounting disc (14).

4. The high-throughput screening device for lithium battery materials as claimed in claim 3, wherein:

two sliding sleeves (121) are arranged on the fixed cross rod (12), and the guide rod (13) is connected with the sliding sleeves (121) in a sliding mode.

5. The high-throughput screening device for lithium battery materials as claimed in claim 2, wherein:

the probe assembly (3) comprises an electrode fixing disc (32), the electrode fixing disc (32) is fixed on the rack, and the anode probes (31) are fixed below the electrode fixing disc (32).

6. The high-throughput screening device for lithium battery materials as claimed in claim 1, wherein:

the body of the test core board (2) is made of insulating materials, and the upper side and the lower side of the micro-area (22) part of the test core board (2) can be electrically conducted.

7. The high-throughput screening device for lithium battery materials as claimed in claim 2, wherein:

the thickness of location auricle (21) is less than the thickness of test core board (2), location auricle (21) with when the bottom surface subsides of joint breach (141) is flat, the top of negative pole probe (142) with the downside of test core board (2) offsets.