CN217387261U - Lithium battery structure - Google Patents
Lithium battery structure Download PDFInfo
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- CN217387261U CN217387261U CN202220681306.8U CN202220681306U CN217387261U CN 217387261 U CN217387261 U CN 217387261U CN 202220681306 U CN202220681306 U CN 202220681306U CN 217387261 U CN217387261 U CN 217387261U
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model provides a lithium battery structure. The lithium battery structure comprises a steel shell and a plurality of laminated structures contained in the steel shell, a plurality of steel shell through holes are formed in the steel shell, a plurality of laminated battery cell through holes are formed in the laminated structures, the number of the laminated battery cell through holes is corresponding to that of the steel shell through holes, the laminated battery cell through holes are formed in a plurality of positions, corresponding to those of the steel shell through holes, of the laminated battery cell through holes, reinforcing ribs are arranged in the laminated battery cell through holes, penetrate through the steel shell through holes and are arranged in the laminated battery cell through holes, and each reinforcing rib comprises a reinforcing rib main body and a cladding layer, wherein the insulating layer is arranged on the outer surface of the reinforcing rib main body. The utility model provides a lithium battery structure has solved the problem of metal lithium battery case expansion deformation, further extends the potentiality that the metal lithium cell commercialization was used.
Description
Technical Field
The utility model relates to a lithium cell technical field especially relates to a lithium cell structure.
Background
The metal lithium battery is an energy storage battery using metal lithium as an electrode, and has attracted much attention because of its advantages such as high working voltage and high energy density. As the metal lithium battery is used as a rechargeable secondary battery, the metal lithium battery has no main body, and is porous in the charge-discharge cycle process, so that the volume can expand without limit, and further the surface of a packaging shell is expanded and deformed to cause a safety problem.
At present, the shell of the metal lithium battery mostly adopts an aluminum-plastic film or a conventional steel shell structure, wherein the metal lithium battery packaged by the aluminum-plastic film has to be tested for various electrical properties under the condition of clamp limitation to prevent the expansion of the metal lithium battery, and the metal lithium battery packaged by the conventional steel shell structure has the problem of steel shell expansion and deformation in the electrical property testing process, so that the potential commercial application of the metal lithium battery is limited.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model provides a restriction metal lithium cell steel casing expanded take lithium cell structure of strengthening rib has solved the problem of metal lithium cell shell expansion deformation, further expands the potentiality that the metal lithium cell commercialization was used.
The utility model discloses a lithium battery structure, including the box hat with accept in a plurality of lamination in the box hat, a plurality of box hat through-holes have been seted up on the box hat, a plurality of lamination electricity core through-holes have been seted up on the lamination, the quantity of seting up of lamination electricity core through-hole with the quantity of seting up of box hat through-hole is corresponding, and is a plurality of the position of seting up of lamination electricity core through-hole is respectively with a plurality of the position of seting up of box hat through-hole is corresponding, each be equipped with the strengthening rib in the lamination electricity core through-hole, the strengthening rib via the box hat through-hole is worn to locate in the lamination electricity core through-hole, the strengthening rib include strengthening rib main part and cladding in the insulating layer of strengthening rib main part surface.
Furthermore, the number of the steel shell through holes is 5, and the number of the laminated battery cell through holes is 5.
Furthermore, the strengthening rib is the cylinder, the length of strengthening rib with the thickness of steel-shelled, the relative both ends of strengthening rib pass through laser welding's mode with the kneck fixed connection of steel-shelled.
Further, the reinforcing rib main body is made of stainless steel materials, and the insulating layer is made of insulating materials.
Further, the lamination stack is stacked in proper order by positive pole piece, barrier film and negative pole piece and is formed, be equipped with anodal mass flow body utmost point ear on the positive pole piece, just anodal pole piece through-hole has been seted up on the positive pole piece, the barrier film through-hole has been seted up on the barrier film, be equipped with negative current collection body utmost point ear on the negative pole piece, just negative pole piece through-hole has been seted up on the negative pole piece, negative pole piece through-hole intercommunication anodal pole piece through-hole with the barrier film through-hole, the negative pole piece through-hole with anodal pole piece through-hole reaches the barrier film through-hole constitutes jointly lamination electricity core through-hole.
Further, anodal mass flow body utmost point ear is the aluminum sheet, the material of barrier film is the PP base film, the surface coating of barrier film has titanium aluminium lithium phosphate solid state electrolyte.
Furthermore, the aperture of the positive pole piece through hole is larger than that of the negative pole piece through hole, the aperture of the negative pole piece through hole is larger than that of the isolating membrane through hole, the aperture of the isolating membrane through hole is larger than that of the steel shell through hole, and the aperture of the steel shell through hole is larger than the diameter of the reinforcing rib.
Further, the anodal mass flow utmost point ear with all be equipped with utmost point ear glue on the negative pole mass flow utmost point ear, it is a plurality of lamination positive mass flow utmost point ear is equipped with the insulating glue through ultrasonic bonding's mode fixed connection and subsides, and is a plurality of lamination negative pole mass flow utmost point ear is equipped with through ultrasonic bonding's mode fixed connection and subsides the insulating glue.
The utility model discloses a lithium battery structure, include the box hat and accept a plurality of lamination in the box hat, a plurality of box hat through-holes have been seted up on the box hat, a plurality of lamination electricity core through-holes have been seted up on the lamination, the quantity of seting up of lamination electricity core through-hole and the quantity of seting up of box hat through-hole are corresponding, the position of seting up of a plurality of lamination electricity core through-holes is corresponding with the position of seting up of a plurality of box hat through-holes respectively, be equipped with the strengthening rib in each lamination electricity core through-hole, the strengthening rib is worn to locate in lamination electricity core through-hole via the box hat through-hole, the strengthening rib includes strengthening rib main part and cladding in the insulating layer of strengthening rib main part surface.
The utility model discloses a lithium battery structure has solved the problem of metal lithium battery case expansion deformation, further extends the potentiality that the metal lithium cell commercialization was used.
Drawings
Fig. 1 is a schematic perspective view of a lithium battery structure according to the present invention;
FIG. 2 is a cross-sectional view of the lithium battery cell structure shown in FIG. 1;
FIG. 3 is a schematic structural diagram of a reinforcing rib of the lithium battery shown in FIG. 1;
FIG. 4 is a schematic view of the internal structure of a reinforcing rib of the lithium battery cell shown in FIG. 1;
fig. 5 is a schematic perspective view of a lamination stack of the lithium battery cell structure shown in fig. 1;
fig. 6 is a schematic view showing an internal structure of a lamination stack of the lithium battery structure shown in fig. 1;
FIG. 7 is a schematic diagram of a positive electrode sheet of the lithium battery shown in FIG. 1;
fig. 8 is a schematic structural diagram of a negative electrode tab of the lithium battery structure shown in fig. 1.
Description of reference numerals:
the laminated battery comprises a positive current collector tab 1, a positive pole piece 2, a positive pole piece through hole 3, a negative current collector tab 4, a negative pole piece 5, a negative pole piece through hole 6, tab glue 7, insulating glue 8, a laminated battery cell through hole 9, a reinforcing rib 10, a steel shell 11, a steel shell through hole 12, an isolating membrane 13, a reinforcing rib main body 14 and an insulating layer 15.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Referring to fig. 1-8, the utility model provides a lithium battery structure, including box hat 11 with accept in a plurality of lamination in the box hat, a plurality of box hat through-holes 12 have been seted up on the box hat, a plurality of lamination electricity core through-holes 9 have been seted up on the lamination, the quantity of seting up of lamination electricity core through-hole with the quantity of seting up of box hat through-hole is corresponding, and is a plurality of the position of seting up of lamination electricity core through-hole is corresponding with a plurality of the position of seting up of box hat through-hole respectively, each be equipped with strengthening rib 10 in the lamination electricity core through-hole, the strengthening rib via the box hat through-hole wears to locate in the lamination electricity core through-hole, the strengthening rib includes strengthening rib main part 14 and cladding in the insulating layer 15 of strengthening rib main part surface.
In one embodiment, the number of the steel shell through holes is 5, and the number of the laminated cell through holes is 5.
In one embodiment, the reinforcing rib is a cylinder, the length of the reinforcing rib is the same as the thickness of the steel shell, and the two opposite ends of the reinforcing rib are fixedly connected with the interface of the steel shell in a laser welding mode. After the cells are stacked, the cells are placed in a steel shell 11, and the reinforcing ribs can penetrate through the laminated cell through holes through the steel shell.
In one embodiment, the reinforcing bar body is made of a stainless steel material and the insulating layer is made of an insulating material. Specifically, the insulating material includes, but is not limited to, an insulating material such as polyimide.
The lamination stack is stacked in proper order by positive pole piece 2, barrier film 13 and negative pole piece 5 and is formed, be equipped with anodal mass flow body utmost point ear 1 on the positive pole piece, just anodal pole piece is last to have seted up anodal pole piece through-hole 3, the barrier film through-hole has been seted up on the barrier film, be equipped with negative current collection body utmost point ear 4 on the negative pole piece, just negative pole piece through-hole 6 has been seted up on the negative pole piece, negative pole piece through-hole intercommunication anodal pole piece through-hole with the barrier film through-hole, the negative pole piece through-hole with anodal pole piece through-hole reaches the barrier film through-hole constitutes jointly lamination electricity core through-hole.
Specifically, anodal mass flow body utmost point ear is the aluminum sheet, the material of barrier film is the PP base film, and the surface coating has titanium aluminium lithium phosphate (LATP) solid-state electrolyte.
In one embodiment, the aperture of the positive pole piece through hole is larger than that of the negative pole piece through hole, the aperture of the negative pole piece through hole is larger than that of the isolating membrane through hole, the aperture of the isolating membrane through hole is larger than that of the steel shell through hole, and the aperture of the steel shell through hole is larger than the diameter of the reinforcing rib.
Specifically, 5 holes are distributed on the negative pole piece, wherein one hole is positioned in the center of the negative pole piece, and the other four holes are positioned at the diagonal 1/4 or 3/4 of the negative pole piece; 5 holes are distributed on the positive pole piece, wherein one hole is positioned in the center of the positive pole piece, and the other four holes are positioned on the diagonal line 1/4 or 3/4 of the positive pole piece; 5 holes are distributed on the isolating membrane, wherein one hole is positioned at the right center of the isolating membrane, and the other four holes are positioned at the diagonal line 1/4 or 3/4 of the isolating membrane; 5 holes are distributed on the steel shell, wherein one hole is positioned at the right center of the steel shell, and the other four holes are positioned at the diagonal 1/4 or 3/4 of the steel shell.
In an embodiment, anodal current collector utmost point ear with all be equipped with utmost point ear gum 7 on the negative pole current collector utmost point ear, it is a plurality of lamination positive current collector utmost point ear is equipped with the insulating cement 8 through ultrasonic bonding's mode fixed connection and subsides, and is a plurality of lamination negative current collector utmost point ear is equipped with through ultrasonic bonding's mode fixed connection and subsides the insulating cement 8. The insulating glue is specifically insulating tea glue.
The utility model discloses a lithium battery structure, include the box hat with accept in a plurality of lamination in the box hat, a plurality of box hat through-holes have been seted up on the box hat, a plurality of lamination electricity core through-holes have been seted up on the lamination, the quantity of seting up of lamination electricity core through-hole with the quantity of seting up of box hat through-hole is corresponding, and is a plurality of the position of seting up of lamination electricity core through-hole is respectively with a plurality of the position of seting up of box hat through-hole is corresponding, each be equipped with the strengthening rib in the lamination electricity core through-hole, the strengthening rib via the box hat through-hole is worn to locate in the lamination electricity core through-hole, the strengthening rib include strengthening rib main part and cladding in the insulating layer of strengthening rib main part surface.
The utility model discloses a lithium battery structure has solved the problem of metal lithium battery case expansion deformation, further extends the potentiality that the metal lithium cell commercialization was used.
The above embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (8)
1. A lithium battery structure characterized by: including the box hat with accept in a plurality of lamination in the box hat, a plurality of box hat through-holes have been seted up on the box hat, a plurality of lamination electricity core through-holes have been seted up on the lamination, the quantity of seting up of lamination electricity core through-hole with the quantity of seting up of box hat through-hole is corresponding, and is a plurality of the position of seting up of lamination electricity core through-hole is respectively with a plurality of the position of seting up of box hat through-hole is corresponding, each be equipped with the strengthening rib in the lamination electricity core through-hole, the strengthening rib via the box hat through-hole is worn to locate in the lamination electricity core through-hole, the strengthening rib include strengthening rib main part and cladding in the insulating layer of strengthening rib main part surface.
2. The lithium battery cell structure of claim 1, wherein: the number of the steel shell through holes is 5, and the number of the laminated battery cell through holes is 5.
3. The lithium battery cell structure of claim 2, wherein: the strengthening rib is the cylinder, the length of strengthening rib with the thickness of box hat is the same, the relative both ends of strengthening rib through laser welding the mode with kneck fixed connection of box hat.
4. A lithium battery cell structure as in claim 3, wherein: the reinforcing rib main body is made of stainless steel materials, and the insulating layer is made of insulating materials.
5. The lithium battery cell structure of claim 4, wherein: the lamination stack is stacked in proper order by positive pole piece, barrier film and negative pole piece and is formed, be equipped with anodal mass flow body utmost point ear on the positive pole piece, just anodal pole piece through-hole has been seted up on the positive pole piece, the barrier film through-hole has been seted up on the barrier film, be equipped with negative pole mass flow body utmost point ear on the negative pole piece, just negative pole piece through-hole has been seted up on the negative pole piece, negative pole piece through-hole intercommunication anodal pole piece through-hole with the barrier film through-hole, the negative pole piece through-hole with anodal pole piece through-hole reaches the barrier film through-hole constitutes jointly lamination electricity core through-hole.
6. The lithium battery cell structure of claim 5, wherein: the positive current collector tab is an aluminum sheet, the isolating membrane is made of a PP (polypropylene) base membrane, and the surface of the isolating membrane is coated with a lithium aluminum phosphate solid electrolyte.
7. The lithium battery cell structure of claim 6, wherein: the aperture of the positive pole piece through hole is larger than that of the negative pole piece through hole, the aperture of the negative pole piece through hole is larger than that of the isolating membrane through hole, the aperture of the isolating membrane through hole is larger than that of the steel shell through hole, and the aperture of the steel shell through hole is larger than the diameter of the reinforcing rib.
8. The lithium battery cell structure of claim 7, wherein: anodal mass flow body utmost point ear with it glues, a plurality of all to be equipped with utmost point ear on the negative pole mass flow body utmost point ear lamination positive mass flow body utmost point ear is equipped with the insulating cement through ultrasonic bonding's mode fixed connection and subsides, and is a plurality of lamination negative mass flow body utmost point ear is equipped with through ultrasonic bonding's mode fixed connection and subsides the insulating cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220681306.8U CN217387261U (en) | 2022-03-28 | 2022-03-28 | Lithium battery structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220681306.8U CN217387261U (en) | 2022-03-28 | 2022-03-28 | Lithium battery structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217387261U true CN217387261U (en) | 2022-09-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220681306.8U Active CN217387261U (en) | 2022-03-28 | 2022-03-28 | Lithium battery structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217387261U (en) |
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2022
- 2022-03-28 CN CN202220681306.8U patent/CN217387261U/en active Active
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