CN220672661U - Insulating pad for horizontal formation clamp and horizontal formation clamp comprising insulating pad - Google Patents
Insulating pad for horizontal formation clamp and horizontal formation clamp comprising insulating pad Download PDFInfo
- Publication number
- CN220672661U CN220672661U CN202322087608.XU CN202322087608U CN220672661U CN 220672661 U CN220672661 U CN 220672661U CN 202322087608 U CN202322087608 U CN 202322087608U CN 220672661 U CN220672661 U CN 220672661U
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- Prior art keywords
- insulating
- insulating part
- hardness
- equal
- battery cell
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- 230000015572 biosynthetic process Effects 0.000 title abstract description 30
- 239000000126 substance Substances 0.000 claims description 6
- 238000005229 chemical vapour deposition Methods 0.000 claims 3
- 238000005498 polishing Methods 0.000 claims 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052744 lithium Inorganic materials 0.000 abstract description 8
- 238000001556 precipitation Methods 0.000 abstract description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000741 silica gel Substances 0.000 description 4
- 229910002027 silica gel Inorganic materials 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000004831 Hot glue Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model provides an insulating pad for a horizontal formation clamp and the horizontal formation clamp comprising the insulating pad, which comprises a first insulating part and a second insulating part; the first insulating part is arranged on one side of the clamp laminate and is used for being contacted with the deep pit surface of the battery cell; the second insulating part is arranged on the other side of the clamp laminate and opposite to the first insulating part and is used for being in contact with the shallow pit surface of the battery cell; wherein the hardness of the first insulating portion is smaller than the hardness of the second insulating portion. Compared with the prior art, the insulating pad comprises two insulating parts with different hardness, the insulating part with smaller hardness is contacted with the deep pit surface of the battery cell, the insulating part with larger hardness is contacted with the shallow pit surface of the battery cell, the stress borne by the deep pit surface can be greatly relieved by the insulating part with smaller hardness, and the stress relieving capability of the insulating part with larger hardness is relatively weak, so that the stress on two sides of the battery cell can be adjusted and balanced, the problem of lithium precipitation of interface gas spots caused by uneven formation pressure is solved, and the electrochemical performance of the battery cell is ensured.
Description
Technical Field
The utility model relates to the technical field of secondary battery preparation, in particular to an insulating pad for a horizontal formation clamp and the horizontal formation clamp comprising the insulating pad.
Background
The secondary soft package battery preparation process comprises the procedures of liquid injection, standing, formation, capacity division and the like, wherein a horizontal formation clamp is generally adopted in the formation procedure to clamp the battery for formation. The contact part of the conventional horizontal formation clamp with the battery is an insulating pad, usually a silica gel pad, the silica gel pad is of uniform specification, the hardness is basically consistent, the passing rate of the formed battery cell is low, and the lithium is separated from the gas spot of the interface of the battery cell, which is approximately 50%, so that the performance of the battery cell is seriously affected. The method is mainly characterized in that the deviation of the flatness of the pit surface of the battery cell is increased due to the influence of hot melt adhesive, the deviation of the pit surface is increased, an insulating pad with basically consistent hardness is adopted to be in contact with different surfaces of the battery cell, the stress of the pit surface is uneven, so that the joint of the cathode and anode plates is not tight, and generated gas during formation and charging cannot be discharged in time, thereby causing the lithium precipitation of gas spots at the interface of the battery cell and seriously affecting the performance of the battery cell.
In view of the foregoing, it is necessary to provide a solution to the above-mentioned problems.
Disclosure of Invention
One of the objects of the present utility model is: the insulating pad for the horizontal formation clamp is provided to solve the problem that the battery cell interface gas spots are separated out of lithium and the performance of the battery cell is seriously affected due to the adoption of a single-hardness insulating pad in the conventional horizontal formation clamp.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
an insulating mat for a horizontal chemical looping jig, comprising:
the first insulating part is arranged on one side of the clamp laminate and is used for being contacted with the deep pit surface of the battery cell;
the second insulating part is arranged on the other side of the clamp laminate and opposite to the first insulating part, and is used for being in contact with the shallow pit surface of the battery cell;
wherein the hardness of the first insulating portion is smaller than the hardness of the second insulating portion.
Preferably, the first insulating portion HAs a hardness of 20HA to 60HA; the hardness of the second insulating part is 40 HA-80 HA.
Preferably, the length of the first insulating portion is equal to the length of the second insulating portion, and the width of the first insulating portion is equal to the width of the second insulating portion.
Preferably, the insulating structure further comprises a third insulating part and a fourth insulating part; the third insulating part and the first insulating part are arranged on one side of the clamp laminate in parallel, the fourth insulating part and the second insulating part are arranged on the other side of the clamp laminate in parallel, and the fourth insulating part and the third insulating part are arranged opposite to each other; the hardness of the third insulating part is larger than that of the fourth insulating part, the length of the third insulating part is equal to that of the fourth insulating part, and the width of the third insulating part is equal to that of the fourth insulating part.
Preferably, the first insulating portion has a hardness equal to that of the fourth insulating portion, and the second insulating portion has a hardness equal to that of the third insulating portion.
Preferably, the connecting device further comprises a connecting part for connecting the first insulating part and the second insulating part and connecting the third insulating part and the fourth insulating part.
Preferably, the connecting part is provided with a plurality of positioning holes, and the aperture of each positioning hole is equal.
Preferably, the length of the first insulating part is equal to the length of the third insulating part, and the width of the first insulating part is equal to the width of the third insulating part; the length of the second insulating part is equal to that of the fourth insulating part, and the width of the second insulating part is equal to that of the fourth insulating part.
Preferably, the first insulating part and the third insulating part are collinear and serve as symmetrical lines, and the plurality of positioning holes are symmetrically arranged on the connecting part.
Another object of the present utility model is to provide a horizontal forming jig including the insulating pad for a horizontal forming jig according to any one of the above.
The utility model has the beneficial effects that: the insulating pad provided by the utility model comprises two insulating parts with different hardness, wherein the insulating part with smaller hardness is contacted with the deep pit surface of the battery cell, the insulating part with larger hardness is contacted with the shallow pit surface of the battery cell, the stress borne by the deep pit surface can be greatly relieved by the insulating part with smaller hardness, and the stress relieving capability of the insulating part with larger hardness is relatively weak, so that the stress on two sides of the battery cell can be balanced, the cathode and anode plates are tightly attached, the generated gas during formation charging can be timely discharged, the problem of lithium precipitation of interface gas spots caused by uneven formation pressure is solved, and the electrochemical performance of the battery cell is ensured.
Drawings
FIG. 1 is a schematic view showing the structure of the insulating pad for a horizontal forming jig according to the present utility model after being developed.
FIG. 2 is a second schematic view of the structure of the insulating pad for a horizontal forming jig according to the present utility model after being developed.
Fig. 3 is a schematic structural diagram of the insulating pad in fig. 2.
Fig. 4 is a schematic diagram of the horizontal forming clamp of the present utility model when clamping a cell.
In the figure: 1-a first insulating portion; 2-a second insulating portion; 3-a third insulating portion; 4-fourth insulation part; a 5-connection; 51-positioning holes.
Detailed Description
In order to make the technical scheme and advantages of the present utility model more apparent, the present utility model and its advantageous effects will be described in further detail below with reference to the detailed description and the accompanying drawings, but the embodiments of the present utility model are not limited thereto.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the description of the present utility model, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", "a third" and a fourth "may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
Standard parts used in the utility model can be purchased from the market, special-shaped parts can be customized according to the description of the specification and the drawings, the specific connection modes of all parts adopt conventional means such as mature bolts, rivets and welding in the prior art, the machinery, the parts and the equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection modes in the prior art, so that the details are not described.
The utility model provides a horizontal formation clamp which comprises a plurality of clamp laminates which are sequentially arranged, wherein a battery cell is clamped between two adjacent clamp laminates, insulating pads are arranged on two sides of each clamp laminate, and the insulating pads on two sides form the insulating pad for the horizontal formation clamp.
For the insulating pad for the existing formation clamp, the thickness and the hardness of the insulating pad arranged on each side of each clamp laminate are consistent, and the insulating pad with single hardness cannot play a role in distinguishing buffering pressure due to different bearing capacities of two sides of a battery core.
The insulating pad for the horizontal forming clamp of the utility model, as shown in fig. 1 and 4, comprises a first insulating part 1 and a second insulating part 2; the first insulating part 1 is arranged on one side of the clamp laminate and is used for being contacted with the deep pit surface of the battery cell; the second insulating part 2 is arranged on the other side of the clamp laminate and opposite to the first insulating part 1, and is used for being in contact with the shallow pit surface of the battery cell; wherein the hardness of the first insulating part 1 is smaller than the hardness of the second insulating part 2.
The insulating pad for the horizontal formation clamp comprises at least two insulating parts with hardness, when the electric core is clamped, one side of the deep pit surface of the electric core is contacted with the first insulating part 1, namely the electric core is contacted with the insulating part with smaller hardness, the deep pit surface is more easily recessed into the insulating part, the thickness of each part of the deep pit surface can be adjusted, the thicker part is more recessed, the thinner part is less recessed, and therefore the flatness of the deep pit surface is improved, and the deep pit surface is more easily stressed uniformly; meanwhile, the shallow pit surface is contacted with the second insulating part 2 of the adjacent clamp laminate, namely the insulating part with larger hardness, the insulating part with larger hardness can provide more support for the shallow pit surface, the insulating parts with two hardness are clamped and matched, the problem of interfacial gas spot lithium precipitation caused by uneven pressure in formation is greatly relieved, and the electrochemical performance of the battery cell is ensured.
The battery core pit surface is one side with thicker thickness after pit punching of the soft package shell; the shallow pit surface of the battery core refers to one side with smaller thickness after pit punching of the soft package shell.
Specifically, the first insulating portion 1 may be made of foam or silica gel material, and the second insulating portion 2 may be made of silica gel material, and after the preparation, it is required to ensure that the hardness of the first insulating portion 1 is less than that of the second insulating portion 2.
In some embodiments, the hardness of the first insulating portion 1 is 20HA to 60HA, specifically may be 20HA, 25HA, 30HA, 35HA, 40HA, 45HA, 50HA, 55HA or 60HA, and the accuracy is maintained within ±2ha.
In some embodiments, the hardness of the second insulating portion 2 is 40 HA-80 HA, specifically 40HA, 45HA, 50HA, 55HA, 60HA, 65HA, 70HA, 75HA or 80HA, the precision is kept within ±2ha, and the specific selection of the hardness of the second insulating portion 2 should be adjusted according to the hardness of the first insulating portion 1, so as to ensure that the hardness of the second insulating portion 2 is greater than the hardness of the first insulating portion 1.
In some embodiments, the length of the first insulating part 1 is equal to the length of the second insulating part 2, and the width of the first insulating part 1 is equal to the width of the second insulating part 2. On the premise of setting the sizes of the two to be the same, the method can be better suitable for formation of the same batch of battery cells.
When the insulating mat of the present utility model includes only the first insulating portion 1 and the second insulating portion 2, the dimensions of the first insulating portion 1 and the second insulating portion 2 are matched with the jig laminate dimensions.
In some embodiments, as shown in fig. 2 to 3, the insulating pad further includes a third insulating portion 3 and a fourth insulating portion 4; the third insulating part 3 and the first insulating part 1 are arranged on one side of the fixture laminate in parallel, the fourth insulating part 4 and the second insulating part 2 are arranged on the other side of the fixture laminate in parallel, and the fourth insulating part 4 and the third insulating part 3 are arranged opposite to each other; the hardness of the third insulating part 3 is greater than that of the fourth insulating part 4, the length of the third insulating part 3 is equal to that of the fourth insulating part 4, and the width of the third insulating part 3 is equal to that of the fourth insulating part 4.
The first insulating part 1 and the third insulating part 3 are spliced continuously, and no obvious splicing convex mark exists between the first insulating part and the third insulating part. Similarly, the second insulating portion 2 and the fourth insulating portion 4 are continuously spliced, and no obvious splicing convex mark exists between the two.
The arrangement of the third insulating part 3 and the fourth insulating part 4 is added, namely, the insulating pad is divided into four parts, as shown in fig. 4, two electric cores can be clamped between the adjacent clamp laminates simultaneously, one electric core is arranged between the first insulating part 1 and the second insulating part 2 of the adjacent clamp laminate, the other electric core is arranged between the third insulating part 3 and the fourth insulating part 4 of the adjacent clamp laminate, and the second insulating part 2 and the fourth insulating part 4 are positioned on the same side of the same clamp laminate. When the number of the battery cells formed simultaneously is increased, the voltage applied to the battery cells during formation can be ensured, and the problem of lithium precipitation of interface gas spots caused by uneven stress is avoided.
In addition, when the third insulating part 3 and the fourth insulating part 4 are additionally arranged, the sizes of the third insulating part and the fourth insulating part are designed to be the same, so that the battery cell can be well adapted to the formation of the battery cells in the same batch.
In some embodiments, the first insulating portion 1 has a hardness equal to the fourth insulating portion 4, and the second insulating portion 2 has a hardness equal to the third insulating portion 3. The hardness of the insulating parts which are opposite in cross are equal, so that the requirement of the same batch of formed cells on the consistency of the hardness of the insulating pads can be better met, and the consistency of the same batch of cells is ensured.
In some embodiments, the hardness of the third insulating portion 3 is 40HA to 80HA, specifically 40HA, 45HA, 50HA, 55HA, 60HA, 65HA, 70HA, 75HA or 80HA, and the accuracy is kept within ±2ha.
In some embodiments, the hardness of the fourth insulating portion 4 is 20HA to 60HA, specifically, may be 20HA, 25HA, 30HA, 35HA, 40HA, 45HA, 50HA, 55HA or 60HA, and the accuracy is maintained within ±2ha.
In some embodiments, as shown in fig. 1 to 3, the insulating pad further includes a connection portion 5 for connecting the first insulating portion 1 and the second insulating portion 2, and connecting the third insulating portion 3 and the fourth insulating portion 4. The connecting part 5 can form the whole of the connection of the insulating pad, and the size of the insulating pad is matched with that of the clamp laminate, so that the insulating pad can be better arranged on the clamp laminate.
Wherein the width of the connection portion 5 can be matched with the thickness of the fixture laminate to better arrange the first and third insulating portions 1 and 3 and the second and fourth insulating portions 2 and 4 at both sides of the fixture laminate.
In some embodiments, the connecting portion 5 is provided with a plurality of positioning holes 51, and the aperture of each positioning hole 51 is equal.
In some embodiments, the length of the first insulating part 1 is equal to the length of the third insulating part 3, and the width of the first insulating part 1 is equal to the width of the third insulating part 3; the length of the second insulating part 2 is equal to the length of the fourth insulating part 4, and the width of the second insulating part 2 is equal to the width of the fourth insulating part 4.
That is, the area of the first insulating part 1 is equal to the area of the third insulating part 3, the area of the second insulating part 2 is equal to the area of the fourth insulating part 4, that is, the area of the first insulating part 1 is equal to the area of the fourth insulating part 4, and the area of the second insulating part 2 is equal to the area of the third insulating part 3.
In some embodiments, the alignment holes 51 are symmetrically disposed in the connection portion 5 with respect to the alignment of the first insulating portion 1 and the third insulating portion 3 as a symmetry line. On the basis of the above, a plurality of symmetrically arranged positioning holes 51 are arranged at the same time, and two mounting modes of the battery cell can be switched at will, so that the requirements of the battery cell pit on the low-hardness insulating part and the shallow pit on the high-hardness insulating part can be met.
Wherein, one installation mode of same electric core is: the deep pit surface of the battery cell is contacted with the first insulating part 1, and the shallow pit surface of the battery cell is contacted with the second insulating part 2 of the adjacent fixture laminate.
Another mounting mode of the same battery cell is as follows: the shallow pit surface of the battery cell is contacted with the third insulating part 3, and the deep pit surface of the battery cell is contacted with the fourth insulating part 4 of the adjacent clamp laminate.
The insulating pad provided by the utility model is applied to a horizontal formation clamp, and can effectively solve the problem of lithium precipitation at the interface of the battery cell caused by the adoption of a single-hardness insulating pad by the conventional horizontal formation clamp through the compression regulation and control of different sides of the battery cell with different hardness, thereby ensuring the electrochemical performance of the battery cell after formation.
Variations and modifications of the above embodiments will occur to those skilled in the art to which the utility model pertains from the foregoing disclosure and teachings. Therefore, the present utility model is not limited to the above-described embodiments, but is intended to be capable of modification, substitution or variation in light thereof, which will be apparent to those skilled in the art in light of the present teachings. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the present utility model in any way.
Claims (10)
1. An insulating mat for a horizontal chemical looping jig, comprising:
the first insulating part is arranged on one side of the clamp laminate and is used for being contacted with the deep pit surface of the battery cell;
the second insulating part is arranged on the other side of the clamp laminate and opposite to the first insulating part, and is used for being in contact with the shallow pit surface of the battery cell;
wherein the hardness of the first insulating portion is smaller than the hardness of the second insulating portion.
2. The insulating pad for a horizontal chemical looping jig according to claim 1, wherein the first insulating portion HAs a hardness of 20HA to 60HA; the hardness of the second insulating part is 40 HA-80 HA.
3. The insulating pad for a horizontal chemical vapor deposition (cfc) jig according to claim 1, wherein the length of the first insulating portion is equal to the length of the second insulating portion, and the width of the first insulating portion is equal to the width of the second insulating portion.
4. The insulating pad for a horizontal chemical looping jig according to claim 1, further comprising a third insulating portion and a fourth insulating portion; the third insulating part and the first insulating part are arranged on one side of the clamp laminate in parallel, the fourth insulating part and the second insulating part are arranged on the other side of the clamp laminate in parallel, and the fourth insulating part and the third insulating part are arranged opposite to each other; the hardness of the third insulating part is larger than that of the fourth insulating part, the length of the third insulating part is equal to that of the fourth insulating part, and the width of the third insulating part is equal to that of the fourth insulating part.
5. The insulating pad for a horizontal chemical vapor deposition (esd) clamp according to claim 4, wherein the first insulating portion has a hardness equal to that of the fourth insulating portion, and the second insulating portion has a hardness equal to that of the third insulating portion.
6. The insulating pad for a horizontal chemical mechanical polishing jig according to claim 4 or 5, further comprising a connecting portion for connecting the first insulating portion and the second insulating portion, and connecting the third insulating portion and the fourth insulating portion.
7. The insulating mat for a horizontal chemical looping jig according to claim 6, wherein the connecting portion is provided with a plurality of positioning holes, and the aperture of each positioning hole is equal.
8. The insulating pad for a horizontal chemical vapor deposition (esd) clamp according to claim 7, wherein the length of the first insulating portion is equal to the length of the third insulating portion, and the width of the first insulating portion is equal to the width of the third insulating portion; the length of the second insulating part is equal to that of the fourth insulating part, and the width of the second insulating part is equal to that of the fourth insulating part.
9. The insulating pad for a horizontal forming jig according to claim 8, wherein the plurality of positioning holes are symmetrically provided in the connecting portion with a line of symmetry of a line of alignment between the first insulating portion and the third insulating portion.
10. A horizontal forming jig comprising the insulating pad for a horizontal forming jig according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322087608.XU CN220672661U (en) | 2023-08-04 | 2023-08-04 | Insulating pad for horizontal formation clamp and horizontal formation clamp comprising insulating pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322087608.XU CN220672661U (en) | 2023-08-04 | 2023-08-04 | Insulating pad for horizontal formation clamp and horizontal formation clamp comprising insulating pad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220672661U true CN220672661U (en) | 2024-03-26 |
Family
ID=90329641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322087608.XU Active CN220672661U (en) | 2023-08-04 | 2023-08-04 | Insulating pad for horizontal formation clamp and horizontal formation clamp comprising insulating pad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220672661U (en) |
-
2023
- 2023-08-04 CN CN202322087608.XU patent/CN220672661U/en active Active
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