CN217544760U - Cover plate structure and battery with same - Google Patents
Cover plate structure and battery with same Download PDFInfo
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- CN217544760U CN217544760U CN202221041938.4U CN202221041938U CN217544760U CN 217544760 U CN217544760 U CN 217544760U CN 202221041938 U CN202221041938 U CN 202221041938U CN 217544760 U CN217544760 U CN 217544760U
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Abstract
The utility model provides an apron structure and have its battery, the apron structure sets up on electric core body, and the apron structure includes: the cover body is provided with a first mounting part; the pole component penetrates through the first installation part and comprises a third connection surface and a fourth connection surface which are oppositely arranged; the insulating part is sleeved on the pole post assembly, and at least part of the insulating part is connected with the third connecting surface; wherein, the insulating part is made of ceramic material; and the sealing component is sleeved on the pole post assembly, and at least part of the sealing component is connected with the fourth connecting surface. The utility model provides a low and the short problem of life cycle of the safety in utilization of electric core among the prior art.
Description
Technical Field
The utility model relates to an electricity core top cap technical field particularly, relates to an apron structure and have its battery.
Background
The battery core top cover is used as an important safety carrier of the battery core, insulation performance needs to be guaranteed to be kept at extreme high temperature, and thermal runaway of the battery core is prevented from being aggravated by short circuit of the top cover.
In the prior art, usually, realize insulating through PPS (polyphenyl thioether) material, but PPS's tolerance temperature is lower, can't deal with extreme high temperature operating mode, and utilizes PPS to realize that insulating mode is poor to the leakproofness of electricity core top cap, leads to electrolyte to reveal easily, has reduced the safe in utilization and the life cycle of electricity core.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a apron structure and have its battery to the safety in utilization of the electric core of solving among the prior art is low and life cycle is short problem.
In order to achieve the above object, according to the utility model discloses an aspect provides an apron structure, sets up on electric core body, and apron structure includes: the cover body is provided with a first mounting part; the pole assembly penetrates through the first installation part and comprises a third connection surface and a fourth connection surface which are oppositely arranged; the insulating part is sleeved on the pole post assembly, and at least part of the insulating part is connected with the third connecting surface; wherein, the insulating part is made of ceramic material; and the sealing component is sleeved on the pole post assembly, and at least part of the sealing component is connected with the fourth connecting surface.
Further, the cover plate structure further includes: the connecting part is at least partially arranged in the first mounting part and comprises a first connecting surface and a second connecting surface which are oppositely arranged along the direction of a hole center line of the first mounting part, the connecting part is provided with a second mounting part, and at least part of the pole assembly is arranged in the second mounting part in a penetrating way; the insulating member is connected to the third connection face and the first connection face, respectively, and the sealing member is connected to the second connection face and the fourth connection face, respectively.
Further, the post assembly includes: the pole body is arranged in the second mounting part in a penetrating manner; the extending connection part is arranged on the pole body and extends from the pole body towards the direction far away from the pole body; the third connecting surface is disposed on the protruding connecting portion.
Furthermore, the insulating part comprises a first end surface connected with a third connecting surface, the first end surface is in a ring shape, the difference between the maximum diameter and the minimum diameter of the first end surface is B5, the third connecting surface is in a ring shape, and the difference between the maximum diameter and the minimum diameter of the third connecting surface is B6; the first connecting surface is circular, and the difference between the maximum diameter and the minimum diameter of the first connecting surface is B7; the value range of the ratio of B6 to B5 is 0.5-1; the value range of the ratio between B7 and B5 is 0.5-1.
Further, the post assembly further comprises: the terminal post is relative with electric core body, and terminal post includes link and free end, and link and this body coupling of utmost point post, terminal post's free end orientation keep away from the direction extension of utmost point post body, and the fourth is connected the face and is set up on terminal post.
Further, the cover plate structure further includes: the connecting terminal is arranged at one end of the pole body, which is far away from the pole terminal, and is disc-shaped, and the maximum diameter of the connecting terminal is B2; the pole body is columnar, the pole body is provided with a fifth connecting surface connected with the connecting terminal, and the maximum diameter of the fifth connecting surface is B3; the value range of the ratio between B2 and B3 is 1-2.
Furthermore, a mounting groove is formed in the fifth connecting surface, a protruding block is arranged on the connecting terminal, and at least part of the protruding block is inserted into the mounting groove; the protruding block is cylindrical, and the diameter of the protruding block is B1; the ratio between B2 and B1 ranges from 5 to 20.
Furthermore, the pole terminal is annular, and the maximum diameter of the pole terminal is B4; the thickness of the pole terminal is H3, and the range of H3 is 1.2mm to 2mm; the value range of the ratio between B4 and B2 is 0.5-1.5.
Further, the thickness of the connecting terminal is H1, and the height of the protruding block is H2; h1 ranges from 1.5mm to 2.5mm, and the ratio of H1 to H2 ranges from 1 to 3.
According to the utility model discloses an on the other hand provides a battery, including electric core body and the apron structure of setting on electric core body, the apron structure is foretell apron structure.
By applying the technical scheme of the utility model, the cover plate structure is arranged on the battery cell body and comprises a cover body, a pole component and an insulating part, wherein the cover body is provided with a first mounting part, preferably, the first mounting part is a mounting hole, the pole component penetrates through the first mounting part, the pole component comprises a third connecting surface and a fourth connecting surface which are oppositely arranged, the third connecting surface and the fourth connecting surface are oppositely arranged along the extending direction of the pole body, the insulating part is sleeved on the pole component, and at least part of the insulating part is connected with the third connecting surface; wherein, insulating part is the ceramic material, still overlaps on the utmost point post subassembly to be equipped with sealing element, and sealing element's at least part is connected with the fourth face of connecting. Utilize ceramic material's insulating part and seal part combined action like this, double sealing has improved utmost point post subassembly's sealing reliability, set up insulating part into ceramic material, reach the high temperature resistant performance of apron structure more than 400 ℃, specifically, seal part is the fluororubber sealing washer, can prevent that the inside electrolyte of battery from getting into utmost point post subassembly and insulating part's hookup location, the utmost point post intensity reliability has been improved to the life cycle of battery and the fail safe nature in the life cycle have effectively been promoted.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows an exploded view of a first structure of a cover structure according to the invention;
fig. 2 shows an exploded view of a second structure of a cover plate structure according to the invention;
fig. 3 shows a first cross-sectional view of a cover plate structure according to the invention;
fig. 4 shows a second cross-sectional view of a cover plate structure according to the invention.
Wherein the figures include the following reference numerals:
1. a cover body; 10. a first mounting portion; 2. a connecting member; 21. a first connection face; 22. a second connection face; 20. a second mounting portion; 3. a pole assembly; 30. a third connection surface; 31. a fourth connection face; 4. an insulating member; 5. a sealing member; 32. a pole body; 320. a fifth connection face; 33. extending the connecting part; 41. a first end face; 34. a pole terminal; 340. a connecting end; 341. a free end; 6. a connection terminal; 321. installing a groove; 60. a protruding block; 8. a plastic body; 90. an explosion-proof valve body; 91. and (4) a protective film.
Detailed Description
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1 to 4, the present invention provides a cover plate structure disposed on a battery cell body, the cover plate structure includes: a cover body 1, wherein a first mounting part 10 is arranged on the cover body 1; the pole assembly 3 penetrates through the first mounting part 10, and the pole assembly 3 comprises a third connecting surface 30 and a fourth connecting surface 31 which are oppositely arranged; the insulating part 4 is sleeved on the pole assembly 3, and at least part of the insulating part 4 is connected with the third connecting surface 30; wherein, the insulating part 4 is made of ceramic material; and the sealing component 5 is sleeved on the pole post assembly 3, and at least part of the sealing component 5 is connected with the fourth connecting surface 31.
According to the utility model provides a cover plate structure, set up on electric core body, cover plate structure includes lid 1, utmost point post subassembly 3 and insulating part 4, be provided with first installation department 10 on the lid 1, preferably, first installation department 10 is the mounting hole, utmost point post subassembly 3 wears to establish in first installation department 10, utmost point post subassembly 3 includes relative third connection face 30 and fourth connection face 31 that sets up, third connection face 30 and fourth connection face 31 set up along utmost point post body 32's extending direction relatively, insulating part 4 cover is established on utmost point post subassembly 3, at least part and the third connection face 30 of insulating part 4 are connected; wherein, insulating part 4 is ceramic material, still overlaps on the utmost point post subassembly 3 and is equipped with sealing member 5, and sealing member 5's at least part is connected with fourth connection face 31. Utilize ceramic material's insulating part 4 and sealing part 5 combined action like this, double sealing, the sealing reliability of utmost point post subassembly 3 has been improved, set up insulating part 4 into ceramic material, the high temperature resistance ability with the apron structure reaches more than 400 ℃, concretely, sealing part 5 is the fluororubber sealing washer, can prevent that the inside electrolyte of battery from getting into utmost point post subassembly 3 and insulating part 4's hookup location, utmost point post intensity reliability has been improved, thereby effectively promoted the life cycle of battery and the fail safe nature in life cycle.
Specifically, the cover plate structure further includes: the connecting part 2, at least part of the connecting part 2 is arranged in the first mounting part 10, along the hole center line direction of the first mounting part 10, the connecting part 2 comprises a first connecting surface 21 and a second connecting surface 22 which are oppositely arranged, the connecting part 2 is provided with a second mounting part 20, and at least part of the pole assembly 3 is arranged in the second mounting part 20 in a penetrating way; the insulating member 4 is connected to the third connection face 30 and the first connection face 21, respectively, and the sealing member 5 is connected to the second connection face 22 and the fourth connection face 31, respectively. Utmost point post subassembly 3 realizes through insulating part 4 and adapting unit 2 between insulating, avoids taking place the short circuit, insulating part 4 through braze respectively with utmost point post subassembly 3 and adapting unit 2 welding, realize utmost point post subassembly 3's primary seal, cooperation sealing member 5 realizes 3 secondary seal of utmost point post subassembly, prevents simultaneously that electrolyte from getting into the regional intensity of brazing that influences utmost point post subassembly 3. Preferably, the second mounting portion 20 is a through-bore, wherein the sealing member 5 has a stepped configuration, a first stepped end surface of the stepped configuration being in abutment with a bore wall of the through-bore, and a second stepped end surface of the stepped configuration being connected to the second connection face 22.
As shown in fig. 1 and 3, the pole assembly 3 includes: the pole body 32 is arranged in the second mounting part 20 in a penetrating way; an extended connection part 33 arranged on the pole body 32, wherein the extended connection part 33 extends from the pole body 32 to a direction far away from the pole body 32; the third connection face 30 is provided on the protruding connection portion 33. Wherein, stretch out connecting portion 33 and be the annular, stretch out connecting portion 33 and extend towards the direction that is close to insulating part 4, utilize the third to connect face 30 and insulating part 4 welding like this, reduced the connection area between utmost point post subassembly 3 and insulating part 4, guaranteed insulating properties between insulating part 4 antipole post body 32 and adapting unit 2.
In a specific implementation process, the insulating part 4 includes a first end face 41 connected to the third connection face 30, the first end face 41 is in a circular ring shape, a difference between a maximum diameter and a minimum diameter of the first end face 41 is B5, the third connection face 30 is in a circular ring shape, and a difference between a maximum diameter and a minimum diameter of the third connection face 30 is B6; the first connecting surface 21 is circular ring-shaped, and the difference between the maximum diameter and the minimum diameter of the first connecting surface 21 is B7; the value range of the ratio of B6 to B5 is 0.5-1; the value range of the ratio between B7 and B5 is 0.5-1. This arrangement enables the first end surface 41 to completely cover the third connection surface 30 and the first connection surface 21 during the connection process, thereby avoiding the circuit safety problem caused by the contact between the third connection surface 30 and the first connection surface 21 and the connection member 2 or the cell body.
Specifically, the pole assembly 3 further includes: with the relative utmost point post terminal 34 of electric core body, utmost point post terminal 34 includes link 340 and free end 341, and link 340 is connected with utmost point post body 32, and the free end 341 orientation of utmost point post terminal 34 is kept away from the direction extension of utmost point post body 32, and the fourth is connected face 31 and is set up on utmost point post terminal 34. Thus, the terminal post 34 is in contact with the cell body to realize current transmission.
Further, the cover plate structure further includes: the connecting terminal 6 is arranged at one end of the pole body 32 far away from the pole terminal 34, the connecting terminal 6 is disc-shaped, and the maximum diameter of the connecting terminal 6 is B2; the pole body 32 is columnar, the pole body 32 has a fifth connection surface 320 connected with the connection terminal 6, and the maximum diameter of the fifth connection surface 320 is B3; the value range of the ratio between B2 and B3 is 1-2. The maximum diameter of the connecting terminal 6 is larger than that of the pole body 32, so that the current overload of the pole assembly is improved.
In the present application, the fifth connection surface 320 is provided with a mounting groove 321, the connection terminal 6 is provided with a protruding block 60, and at least a portion of the protruding block 60 is inserted into the mounting groove 321; the protruding block 60 is cylindrical, and the diameter of the protruding block 60 is B1; the ratio between B2 and B1 ranges from 5 to 20. This arrangement increases the connection strength of the connection terminal 6 with the post body 32.
Preferably, the pole terminal 34 is annular, and the maximum diameter of the pole terminal 34 is B4; the thickness of the pole terminal 34 is H3, the range of H3 is 1.2mm to 2mm; the value range of the ratio between B4 and B2 is 0.5-1.5. The thickness of the pole terminal 34 is limited, and the maximum diameter of the connecting terminal 6 is larger than that of the pole body 32, so that the current overload of the pole assembly is improved.
Specifically, the thickness of the connection terminal 6 is H1, and the height of the projection block 60 is H2; h1 ranges from 1.5mm to 2.5mm, and the ratio of H1 to H2 ranges from 1 to 3. Therefore, the connection terminal 6 is tightly connected with the pole body 32, and the strength of the pole body 32 and the connection terminal 6 is ensured.
In the actual installation, the cover plate structure further comprises a plastic body 8, the plastic body 8 is arranged on one side, close to the battery cell body, of the cover body 1, the battery cell body and the cover body are insulated, an explosion-proof valve body 90 is further arranged on the cover body 1, a protective film 91 is arranged on the explosion-proof valve body 90, the explosion-proof valve body 90 is utilized, and pressure relief is carried out when the battery cell is overheated to cause overlarge pressure, so that the safety of a battery system is ensured.
The utility model also provides a battery, including electric core body and the apron structure of setting on electric core body, the apron structure is the apron structure of above-mentioned embodiment.
From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:
according to the utility model provides a cover plate structure, set up on electric core body, cover plate structure includes lid 1, utmost point post subassembly 3 and insulating part 4, be provided with first installation department 10 on the lid 1, preferably, first installation department 10 is the mounting hole, utmost point post subassembly 3 wears to establish in first installation department 10, utmost point post subassembly 3 includes relative third connection face 30 and fourth connection face 31 that sets up, third connection face 30 and fourth connection face 31 set up along utmost point post body 32's extending direction relatively, insulating part 4 cover is established on utmost point post subassembly 3, at least part and the third connection face 30 of insulating part 4 are connected; wherein, insulating part 4 is ceramic material, still overlaps on the utmost point post subassembly 3 to be equipped with sealing member 5, and sealing member 5's at least part is connected with fourth connection face 31. Utilize ceramic material's insulating part 4 and 5 combined action of seal part like this, double sealing, the sealing reliability of utmost point post subassembly 3 has been improved, set up insulating part 4 into ceramic material, the high temperature resistant performance with the apron structure reaches more than 400 ℃, specifically, seal part 5 is the fluororubber sealing washer, can prevent that the inside electrolyte of battery from getting into utmost point post subassembly 3 and insulating part 4's hookup location, utmost point post intensity reliability has been improved, thereby effectively promoted the life cycle of battery and the fail safe nature in life cycle.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a cover plate structure, sets up on electric core body, its characterized in that, cover plate structure includes:
the cover comprises a cover body (1), wherein a first mounting part (10) is arranged on the cover body (1);
the pole assembly (3) penetrates through the first installation part (10), and the pole assembly (3) comprises a third connection surface (30) and a fourth connection surface (31) which are oppositely arranged;
the insulating part (4) is sleeved on the pole assembly (3), and at least part of the insulating part (4) is connected with the third connecting surface (30); wherein, the insulating part (4) is made of ceramic material;
and the sealing component (5) is sleeved on the pole assembly (3), and at least part of the sealing component (5) is connected with the fourth connecting surface (31).
2. The cover plate structure of claim 1, further comprising:
the connecting part (2), at least part of the connecting part (2) is arranged in the first mounting part (10), along the direction of the hole center line of the first mounting part (10), the connecting part (2) comprises a first connecting surface (21) and a second connecting surface (22) which are oppositely arranged, the connecting part (2) is provided with a second mounting part (20), and at least part of the pole assembly (3) is arranged in the second mounting part (20) in a penetrating way;
the insulating part (4) is connected to the third connection surface (30) and the first connection surface (21), and the sealing part (5) is connected to the second connection surface (22) and the fourth connection surface (31).
3. The cover plate structure according to claim 2, characterized in that the pole assembly (3) comprises:
the pole body (32) is arranged in the second mounting part (20) in a penetrating way;
the protruding connecting part (33) is arranged on the pole body (32), and the protruding connecting part (33) extends from the pole body (32) to the direction far away from the pole body (32);
the third connection face (30) is provided on the protruding connection portion (33).
4. The cover plate structure according to claim 3, characterized in that the insulating part (4) comprises a first end surface (41) connected to the third connection surface (30), the first end surface (41) being circular in shape, the difference between the largest and the smallest diameter of the first end surface (41) being B5; the third connecting surface (30) is annular, and the difference between the maximum diameter and the minimum diameter of the third connecting surface (30) is B6; the first connecting surface (21) is annular, and the difference between the maximum diameter and the minimum diameter of the first connecting surface (21) is B7;
the value range of the ratio of B6 to B5 is 0.5-1; the value range of the ratio between B7 and B5 is 0.5-1.
5. The cover plate structure according to claim 3, characterized in that the pole assembly (3) further comprises:
utmost point post terminal (34) relative with electric core body, utmost point post terminal (34) are including link (340) and free end (341), link (340) with utmost point post body (32) are connected, free end (341) orientation of utmost point post terminal (34) is kept away from the direction of utmost point post body (32) extends, fourth connection face (31) set up on utmost point post terminal (34).
6. The cover structure of claim 5, further comprising:
the connecting terminal (6) is arranged at one end, far away from the pole terminal (34), of the pole body (32), the connecting terminal (6) is disc-shaped, and the maximum diameter of the connecting terminal (6) is B2;
the pole body (32) is columnar, the pole body (32) is provided with a fifth connecting surface (320) connected with the connecting terminal (6), and the maximum diameter of the fifth connecting surface (320) is B3;
the value range of the ratio between B2 and B3 is 1-2.
7. The cover plate structure according to claim 6, wherein a mounting groove (321) is provided on the fifth connection surface (320), a protruding block (60) is provided on the connection terminal (6), and at least a portion of the protruding block (60) is inserted into the mounting groove (321);
the protruding block (60) is cylindrical, and the diameter of the protruding block (60) is B1;
the ratio between B2 and B1 ranges from 5 to 20.
8. The cover plate structure according to claim 6, characterized in that the pole terminal (34) is annular, the maximum diameter of the pole terminal (34) being B4; the thickness of the pole terminal (34) is H3, and the range of H3 is 1.2mm to 2mm;
the value range of the ratio between B4 and B2 is 0.5-1.5.
9. The cover plate structure according to claim 7, characterized in that the thickness of the connection terminal (6) is H1, the height of the protruding block (60) is H2;
h1 ranges from 1.5mm to 2.5mm, and the ratio of H1 to H2 ranges from 1 to 3.
10. A battery comprising a cell body and a cover plate structure disposed on the cell body, wherein the cover plate structure is as defined in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221041938.4U CN217544760U (en) | 2022-04-29 | 2022-04-29 | Cover plate structure and battery with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221041938.4U CN217544760U (en) | 2022-04-29 | 2022-04-29 | Cover plate structure and battery with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217544760U true CN217544760U (en) | 2022-10-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221041938.4U Active CN217544760U (en) | 2022-04-29 | 2022-04-29 | Cover plate structure and battery with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217544760U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117374491A (en) * | 2023-12-07 | 2024-01-09 | 蜂巢能源科技股份有限公司 | Battery and electric equipment |
-
2022
- 2022-04-29 CN CN202221041938.4U patent/CN217544760U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117374491A (en) * | 2023-12-07 | 2024-01-09 | 蜂巢能源科技股份有限公司 | Battery and electric equipment |
| CN117374491B (en) * | 2023-12-07 | 2024-02-20 | 蜂巢能源科技股份有限公司 | Battery and electric equipment |
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