CN214280156U - Battery cover plate assembly and lithium ion battery - Google Patents
Battery cover plate assembly and lithium ion battery Download PDFInfo
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- CN214280156U CN214280156U CN202120564083.2U CN202120564083U CN214280156U CN 214280156 U CN214280156 U CN 214280156U CN 202120564083 U CN202120564083 U CN 202120564083U CN 214280156 U CN214280156 U CN 214280156U
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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
- 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
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Abstract
The utility model relates to a battery cover plate component and lithium ion battery, including the apron body, first conducting layer, second conducting layer and connecting piece, the apron body is used for with the battery casing but the conductive connection, first conducting layer sets up in the surface of apron body and but the conductive connection with this apron body, the second conducting layer sets up in the first conducting layer and keeps away from one side of apron body and is used for but the conductive connection with positive post, the connecting piece movably sets up between first conducting layer and second conducting layer and has first position and second position, the connecting piece includes conductive part and insulating part; when the connecting piece is at the first position, at least the conductive part is contacted with the first conductive layer and the second conductive layer; when the connecting piece is at the second position, the conductive part is only contacted with one of the first conductive layer and the second conductive layer, or the insulating part is only contacted with the first conductive layer and the second conductive layer. The risk of short circuit can also be reduced when can effectively reduce battery case and take place the corruption probability.
Description
Technical Field
The disclosure relates to the technical field of lithium ion batteries, in particular to a battery cover plate assembly and a lithium ion battery.
Background
The lithium ion battery has the advantages of high energy density, high open-circuit voltage, high output power, no memory effect, wide working temperature range, small self-discharge and the like. It is used as a novel high-energy chemical power source and is rapidly integrated into the life of people. But simultaneously, the anti-explosion and anti-explosion device has the defects of intolerance to over-discharge, intolerance to over-charge, aging and heat intolerance and the like, and the fire and explosion caused by short circuit are worried aspects. At present, the battery shell of the square hard-shell lithium ion battery is mainly divided into two types:
one is that the battery shell is positively charged, the electric potential is higher, under the condition, the corrosion probability of the battery shell is small, and the battery shell is suitable for being used in the scene that the lithium ion battery is static or has no external contact; but is prone to the risk of short circuits when contact is made with external components.
The other is that the battery shell is not charged, so that the external insulation safety of the battery shell is good under the condition, and the battery shell is suitable for being used in the scene that the lithium ion battery is transported or needs to be in contact with external parts; the probability of corrosion of the battery case increases, thereby reducing the service life of the lithium ion battery.
However, the lithium ion battery inevitably needs to be placed still and transported, and a positively charged battery case or an uncharged battery case is inevitably damaged, so that the service life is reduced.
SUMMERY OF THE UTILITY MODEL
The purpose of the present disclosure is to provide a battery cover plate assembly and a lithium ion battery, the battery cover plate assembly can effectively reduce the probability of corrosion of a battery shell, and at the same time, can reduce the risk of short circuit, and prolong the service life.
In order to achieve the above object, the present disclosure provides a battery cover plate assembly, which includes a cover plate body, a first conductive layer, a second conductive layer and a connecting member, wherein the cover plate body is configured to be conductively connected with a battery case, the first conductive layer is disposed on an outer surface of the cover plate body and is conductively connected with the cover plate body, the second conductive layer is disposed on a side of the first conductive layer away from the cover plate body and is configured to be conductively connected with a positive post, the connecting member is movably disposed between the first conductive layer and the second conductive layer and has a first position and a second position, and the connecting member includes a conductive portion and an insulating portion; when the connector is in the first position, at least the conductive portions are in contact with the first conductive layer and the second conductive layer; when the connecting piece is in the second position, the conductive part is only contacted with one of the first conductive layer and the second conductive layer, or the insulating part is only contacted with the first conductive layer and the second conductive layer.
Optionally, the insulating portion includes a first insulating portion and a second insulating portion, the conductive portion is disposed between the first insulating portion and the second insulating portion, and the connecting member is rotatably disposed between the first conductive layer and the second conductive layer about an axis parallel to the cover plate body; when the connecting piece is in the second position, one and only the first insulating part is in contact with the first conducting layer and one and only the second insulating part is in contact with the second conducting layer; alternatively, there is and only the second insulating portion in contact with the first conductive layer and there is and only the first insulating portion in contact with the second conductive layer.
Optionally, the connecting member is configured as a cylinder, the first insulating portion, the conductive portion and the second insulating portion all extend along an axis of the cylinder, and the conductive portion passes through the axis of the cylinder in a radial direction of the cylinder; one side of the first conducting layer, which is far away from the cover plate body, is provided with a first rotating groove for the connecting piece to rotate, and one side of the second conducting layer, which is close to the cover plate body, is provided with a second rotating groove for the connecting piece to rotate.
Optionally, the connecting piece is provided with an operating piece for operating the connecting piece to rotate.
Alternatively, the operating member is configured as an operating groove that is provided on an end surface of the cylindrical body and is formed on the conductive portion, and the operating groove extends in a radial direction of the cylindrical body.
Optionally, the connecting member is disposed between the first conductive layer and the second conductive layer in a pluggable manner, and when the connecting member is in the first position, the connecting member is inserted between the first conductive layer and the second conductive layer, and the conductive portion and the insulating portion are both in contact with the first conductive layer and the second conductive layer; when the connector is in the second position, the connector is partially pulled out from between the first conductive layer and the second conductive layer, and only the insulating portion is in contact with the first conductive layer and the second conductive layer.
Optionally, the battery cover plate assembly further comprises an insulating layer, the insulating layer is arranged between the first conducting layer and the second conducting layer, the edge of the insulating layer is recessed inwards to form a movable groove, and the connecting piece is movably arranged in the movable groove.
Optionally, the first conductive layer is formed with a first mounting hole, the second conductive layer is formed with a second mounting hole, the first mounting hole and the second mounting hole are both used for the positive post to wear to establish, just the inner wall of the first mounting hole be used for with positive post interval sets, the inner wall of the second mounting hole be used for with the setting of laminating of positive post.
Optionally, the conductive part is made of a conductive metal material, and the insulating part is made of a ceramic material.
The present disclosure additionally provides a lithium ion battery comprising a positive post, a battery case and a battery cover plate assembly.
In the above technical solution, when the connecting member disposed between the first conductive layer and the second conductive layer is in the first position, at least the conductive portion of the connecting member is in contact with the first conductive layer and the second conductive layer, so that the conductive connection between the first conductive layer and the second conductive layer can be achieved, and since the second conductive layer is conductively connected with the positive post, the first conductive layer is also conductively connected with the positive post, that is, positively charged; the first conductive layer and the cover plate body can be conductively connected, so that the cover plate body is positively charged; the cover plate body is conductively connected with the battery shell, so that the battery shell is positively charged; the battery shell has small corrosion probability and is suitable for being used in a static or non-external contact scene. When the connecting piece is located at the second position, the conductive part is only contacted with one of the first conductive layer and the second conductive layer, or if the insulating part is contacted with the first conductive layer and the second conductive layer, the first conductive layer and the second conductive layer are in insulating connection, the first conductive layer is not electrified, the cover plate body is not electrified, and the battery shell is also not electrified; the battery shell is insulated from the outside, has good safety, and is suitable for transportation and used in a scene needing to be in contact with an external component.
In general, the connector has a first position conductively coupling the first conductive layer and the second conductive layer and a second position conductively coupling the first conductive layer and the second conductive layer, and the battery housing is positively charged when the connector is in the first position and is not charged when the connector is in the second position. The bidirectional conversion of the battery shell between the positive potential and the central potential can be realized by operating the connecting piece, when the connecting piece is used for storage, the connecting piece can be set to be at the first position, and the battery shell is positively charged, so that the corrosion of the battery shell can be reduced; when being used for transporting, can set up the connecting piece into the second position, battery case is neutral state, and battery case contactless risk avoids taking place the short circuit with external component effectively, can change battery case's charged state under the use scene of difference, and the practicality is strong, improves security and life effectively.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
fig. 1 is a schematic structural diagram of a lithium ion battery according to an embodiment of the present disclosure;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A, with the connection member in the battery cover plate assembly in a second position;
fig. 3, 4 and 5 are schematic structural views of a battery cover plate assembly obtained by rotating the connecting member in fig. 2, and the connecting member in fig. 3, 4 and 5 is in a first position.
Description of the reference numerals
1 first conductive layer 11 first rotating groove
2 second conductive layer 21 second rotating groove
3 connector 31 conductive part
32 insulating portion 321 first insulating portion
322 second insulating part 4 insulating layer
10 cover plate body 100 battery shell
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
In the present disclosure, unless otherwise specified, terms of orientation such as "inner and outer" are used to refer to the inner and outer of the specific structural outline, and terms such as "first and second" are used merely to distinguish one element from another, and are not sequential or important.
As shown in fig. 1 to 5, the present disclosure provides a battery cover plate assembly, which includes a cover plate body 10, a first conductive layer 1, a second conductive layer 2 and a connecting member 3, wherein the cover plate body 10 is configured to be conductively connected to a battery case 100, the first conductive layer 1 is disposed on an outer surface of the cover plate body 10 and is conductively connected to the cover plate body 10, the second conductive layer 2 is disposed on a side of the first conductive layer 1 away from the cover plate body 10 and is configured to be conductively connected to a positive post, the connecting member 3 is movably disposed between the first conductive layer 1 and the second conductive layer 2 and has a first position and a second position, and the connecting member 3 includes a conductive portion 31 and an insulating portion 32; when the connector 3 is in the first position, at least the conductive portions 31 are in contact with the first conductive layer 1 and the second conductive layer 2; when the connector 3 is in the second position, the conductive portion 31 is in contact with only one of the first conductive layer 1 and the second conductive layer 2, or only the insulating portion 32 is in contact with the first conductive layer 1 and the second conductive layer 2.
In the above-described embodiment, when the connector 3 provided between the first conductive layer 1 and the second conductive layer 2 is in the first position, at least the conductive portion 31 of the connector 3 is in contact with the first conductive layer 1 and the second conductive layer 2, so that the conductive connection between the first conductive layer 1 and the second conductive layer 2 can be achieved, and since the second conductive layer 2 and the positive post are conductively connected, the first conductive layer 1 is also conductively connected to the positive post, that is, positively charged; the first conductive layer 1 and the cover body 10 are conductively connected, so that the cover body 10 is positively charged; since the cap plate body 10 is conductively connected to the battery case 100, the battery case 100 is also positively charged; the battery case 100 has a low corrosion probability and is suitable for use in a stationary or non-external-contact scene. When the connecting member 3 is in the second position, the conductive portion 31 is in contact with only one of the first conductive layer 1 and the second conductive layer 2, or, if there is only the insulating portion 32 in contact with the first conductive layer 1 and the second conductive layer 2, the first conductive layer 1 and the second conductive layer 2 are in insulated connection, the first conductive layer 1 is not electrified, the cover plate body 10 is not electrified, and the battery case 100 is not electrified; the battery case 100 is insulated from the outside, has good safety, and is suitable for use in a scene where transportation is required and contact with an external component is required.
In summary, the connecting member 3 has a first position in which it electrically connects the first conductive layer 1 and the second conductive layer 2 and a second position in which it electrically connects the first conductive layer 1 and the second conductive layer 2, and when the connecting member 3 is in the first position, the battery case 100 is positively charged, and when the connecting member 3 is in the second position, the battery case 100 is not charged. The bidirectional conversion of the battery shell 100 between the positive potential and the central potential can be realized by operating the connecting piece 3, when the battery shell is used for storage, the connecting piece 3 can be set to be at the first position, the battery shell 100 is positively charged, and the corrosion of the battery shell 100 can be reduced; when being used for transporting, can set up connecting piece 3 into the second position, battery housing 100 is neutral state, and battery housing 100 contactless risk avoids effectively taking place the short circuit with external component, can change battery housing 100's charged state under the use scene of difference to improve security and life effectively.
In one embodiment, referring to fig. 2, the insulation part 32 includes a first insulation part 321 and a second insulation part 322, the conductive part 31 is disposed between the first insulation part 321 and the second insulation part 322, and the connection member 3 is rotatably disposed between the first conductive layer 1 and the second conductive layer 2 about an axis parallel to the cap body 10; when the connector 3 is in the second position, one and only the first insulating portion 321 is in contact with the first conductive layer 1 and one and only the second insulating portion 322 is in contact with the second conductive layer 2; alternatively, there is and only the second insulating portion 322 in contact with the first conductive layer 1 and there is and only the first insulating portion 321 in contact with the second conductive layer 2.
First, by providing the insulating portion 32 as the first insulating portion 321 and the second insulating portion 322, and the conductive portion 31 between the first insulating portion 321 and the second insulating portion 322, and the connecting member 3 rotatably provided between the first conductive layer 1 and the second conductive layer 2. The switching between the first position and the second position, i.e. the switching between the positive and neutral state of the battery housing 100, can be effected by a rotation of the connecting element 3. Simple structure and strong operability.
Of course, the disclosure is not limited to the movement of the connector 3, and in other embodiments, the connector 3 may be provided between the first conductive layer 1 and the second conductive layer 2 in an insertable manner.
For example (not shown), the connecting member 3 may be removably disposed between the first conductive layer 1 and the second conductive layer 2, when the connecting member 3 is at the first position, the connecting member 3 is inserted between the first conductive layer 1 and the second conductive layer 2, and the conductive portion 31 and the insulating portion 32 are both in contact with the first conductive layer 1 and the second conductive layer 2; when the connector 3 is in the second position, the connector 3 is partially pulled out from between the first conductive layer 1 and the second conductive layer 2, with only the insulation 32 in contact with the first conductive layer 1 and the second conductive layer 2. In this embodiment as well, switching of the battery case 100 between the positive potential and the neutral potential can be achieved.
Referring to fig. 1 and 2, in the connector 3 in the figure, the first insulating portion 321 is in contact with the first conductive layer 1, and the second insulating portion 322 is in contact with the second conductive layer 2, that is, only the insulating portion 32 is in contact with the first conductive layer 1 and the second conductive layer 2, that is, the connector 3 is in the second position; as shown in fig. 3 to 5, it can be seen that the conductive portions 31 are all in contact with the first conductive layer 1 and the second conductive layer 2, and the connectors in fig. 3 to 5 are all in the first position.
In one embodiment, the connection member 3 is configured as a cylinder, the first insulating portion 321, the conductive portion 31, and the second insulating portion 322 all extend along an axis of the cylinder, and the conductive portion 31 passes through the axis of the cylinder in a radial direction of the cylinder; a first rotating groove 11 for rotating the connecting member 3 is formed on one side of the first conductive layer 1 away from the cover plate body 10, and a second rotating groove 21 for rotating the connecting member 3 is formed on one side of the second conductive layer 2 close to the cover plate body 10.
By providing the first rotating groove 11 and the second rotating groove 21 on the first conductive layer 1 and the second conductive layer 2, respectively, the connecting member 3 configured as a cylinder is rotatably provided between the first rotating groove 11 and the second rotating groove 21, and on the side surface of the cylinder, divided into four regions, the first region being the side surface of the first insulating portion 321, the second region being the side surface of the second insulating portion 322, the third region and the fourth region being the side surface of the conductive portion 31, and the third region and the fourth region being located between the first region and the second region. When the connecting piece 3 is at the first position, the third area is positioned in the first rotating groove 11, and the fourth area is positioned in the second rotating groove 21; alternatively, the third region is located in the second rotation groove 21 and the fourth region is located in the first rotation groove 11. When the connecting piece 3 is in the second position, at least one of the rotating grooves is provided with a first area or a second area.
Alternatively, the link 3 is provided with an operating member (not shown) for operating the link 3 to rotate. Thereby facilitating manipulation of the above-mentioned connecting member 3 for rotation. The operating member may be configured in any suitable shape and configuration, as the present disclosure is not limited thereto.
In one embodiment, the actuating element is configured as an actuating groove (not shown) which is provided on the end face of the cylindrical body and is formed on the conductive portion 31, and which extends in the radial direction of the cylindrical body. When the connector 3 is driven to rotate, an operator can insert a tool such as a flat screwdriver into the operating slot to drive the connector 3 to rotate.
Referring to fig. 2 to 5, the battery cover plate assembly may further include an insulating layer 4, the insulating layer 4 is disposed between the first conductive layer 1 and the second conductive layer 2, an edge of the insulating layer 4 is recessed inward to form a movable groove, and the connecting member 3 is movably disposed in the movable groove. By providing the insulating layer 4, on the one hand, the second conductive layer 2 can be effectively supported, and on the other hand, when the first conductive layer 1 and the second conductive layer 2 do not need to be conductively connected, the first conductive layer 1 and the second conductive layer 2 can be effectively insulated by the insulating layer 4.
In other embodiments, the first conductive layer 1 is formed with a first mounting hole (not shown), the second conductive layer 2 is formed with a second mounting hole (not shown), both the first mounting hole and the second mounting hole are used for the positive post to pass through, and the inner wall of the first mounting hole is used for being arranged at an interval with the positive post, that is, the first conductive layer 1 and the positive post are not conductively connected; the inner wall of the second mounting hole is used for being attached to the positive pole. That is, the second conductive layer 2 is conductively connected to the positive post. The structure is simple and the arrangement space is effectively utilized.
In one embodiment, the conductive portion 31 is made of a conductive metal material and the insulating portion 32 is made of a ceramic material. Low cost and long service life. However, the present disclosure does not limit the specific material types of the conductive portion 31 and the insulating portion 32.
The present disclosure additionally provides a lithium ion battery, which includes a positive post, a battery case 100 and the above battery cover plate assembly.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. A battery cover plate component is characterized by comprising a cover plate body (10), a first conducting layer (1), a second conducting layer (2) and a connecting piece (3), the cover plate body (10) is used for being connected with a battery shell (100) in an electric conduction mode, the first conducting layer (1) is arranged on the outer surface of the cover plate body (10) and is connected with the cover plate body (10) in an electric conduction mode, the second conducting layer (2) is arranged on one side of the first conducting layer (1) far away from the cover plate body (10) and is used for being conductively connected with a positive pole, the connecting piece (3) is movably arranged between the first conducting layer (1) and the second conducting layer (2) and has a first position and a second position, and the connection member (3) comprises a conductive portion (31) and an insulating portion (32);
-at least said conductive portion (31) is in contact with said first conductive layer (1) and said second conductive layer (2) when said connection (3) is in said first position; when the connector (3) is in the second position, the conductive portion (31) is in contact with only one of the first conductive layer (1) and the second conductive layer (2), or the insulating portion (32) is in contact with only the first conductive layer (1) and the second conductive layer (2).
2. The battery cover plate assembly according to claim 1, wherein the insulating portion (32) comprises a first insulating portion (321) and a second insulating portion (322), the conductive portion (31) being arranged between the first insulating portion (321) and the second insulating portion (322), the connecting member (3) being rotatably arranged between the first conductive layer (1) and the second conductive layer (2) about an axis parallel to the cover plate body (10); when the connector (3) is in the second position, one and only the first insulating portion (321) is in contact with the first conductive layer (1) and one and only the second insulating portion (322) is in contact with the second conductive layer (2); alternatively, there is and only the second insulating portion (322) in contact with the first conductive layer (1) and there is and only the first insulating portion (321) in contact with the second conductive layer (2).
3. The battery cover plate assembly according to claim 2, wherein the connecting member (3) is configured as a cylinder, the first insulating portion (321), the conductive portion (31), and the second insulating portion (322) all extend along an axis of the cylinder, and the conductive portion (31) passes through the axis of the cylinder in a radial direction of the cylinder; one side of the first conducting layer (1) far away from the cover plate body (10) is provided with a first rotating groove (11) for the connecting piece (3) to rotate, and one side of the second conducting layer (2) close to the cover plate body (10) is provided with a second rotating groove (21) for the connecting piece (3) to rotate.
4. A battery cover plate assembly according to claim 3, wherein the connecting member (3) is provided with an operating member for operating the connecting member (3) to rotate.
5. The battery cover plate assembly according to claim 4, wherein the operating member is configured as an operating groove which is provided on an end surface of the cylindrical body and formed on the conductive portion (31), and the operating groove extends in a radial direction of the cylindrical body.
6. The battery cover plate assembly according to claim 1, wherein the connecting member (3) is provided between the first conductive layer (1) and the second conductive layer (2) in a pluggable manner, the connecting member (3) is inserted between the first conductive layer (1) and the second conductive layer (2) when the connecting member (3) is in the first position, and the conductive portion (31) and the insulating portion (32) are both in contact with the first conductive layer (1) and the second conductive layer (2); when the connector (3) is in the second position, the connector (3) is partially pulled out from between the first conductive layer (1) and the second conductive layer (2), and only the insulating portion (32) is in contact with the first conductive layer (1) and the second conductive layer (2).
7. The battery cover plate assembly according to any one of claims 1 to 6, further comprising an insulating layer (4), wherein the insulating layer (4) is disposed between the first conductive layer (1) and the second conductive layer (2), and an edge of the insulating layer (4) is recessed inwards to form a movable groove, and the connecting member (3) is movably disposed in the movable groove.
8. The battery cover plate assembly according to claim 1, wherein a first mounting hole is formed in the first conductive layer (1), a second mounting hole is formed in the second conductive layer (2), the first mounting hole and the second mounting hole are used for the positive post to penetrate through, the inner wall of the first mounting hole is used for being spaced from the positive post, and the inner wall of the second mounting hole is used for being attached to the positive post.
9. The battery cover plate assembly according to claim 1, wherein the conductive portion (31) is made of a conductive metal material, and the insulating portion (32) is made of a ceramic material.
10. A lithium ion battery, characterized in that it comprises a positive post, a battery casing (100) and a battery cover plate assembly according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120564083.2U CN214280156U (en) | 2021-03-18 | 2021-03-18 | Battery cover plate assembly and lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120564083.2U CN214280156U (en) | 2021-03-18 | 2021-03-18 | Battery cover plate assembly and lithium ion battery |
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| Publication Number | Publication Date |
|---|---|
| CN214280156U true CN214280156U (en) | 2021-09-24 |
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ID=77798431
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120564083.2U Active CN214280156U (en) | 2021-03-18 | 2021-03-18 | Battery cover plate assembly and lithium ion battery |
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| CN (1) | CN214280156U (en) |
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2021
- 2021-03-18 CN CN202120564083.2U patent/CN214280156U/en active Active
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