CN212659648U - Utmost point post, power battery, battery package and electric automobile - Google Patents
Utmost point post, power battery, battery package and electric automobile Download PDFInfo
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- CN212659648U CN212659648U CN202021786575.8U CN202021786575U CN212659648U CN 212659648 U CN212659648 U CN 212659648U CN 202021786575 U CN202021786575 U CN 202021786575U CN 212659648 U CN212659648 U CN 212659648U
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- utmost point
- fusing
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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 provides a utmost point post, power battery, battery package and electric automobile, utmost point post sets up on utmost point ear, utmost point post includes utmost point post portion and connecting portion, connecting portion connect in utmost point post portion with between the utmost point ear, along predetermineeing the direction, utmost point post portion is inside sunken, forms first utmost point post portion and fusing portion, fusing portion connect in first utmost point post portion with between the connecting portion, connecting portion connect in utmost point ear, the cross-sectional area of fusing portion is less than the cross-sectional area of first utmost point post portion and the cross-sectional area of connecting portion, just fusing portion fuse after overcurrent flows through with the connection of utmost point ear. The utility model discloses a set up the pole portion and along predetermineeing the sunken fusing portion that forms of direction, make fusing portion global not have the disconnection area to realize the current distribution homogenization in the fusing portion, simultaneously, still can improve the intensity of fusing portion.
Description
Technical Field
The utility model relates to a power battery field, concretely relates to utmost point post, power battery, battery package and electric automobile.
Background
With the development of the times, the power battery is more and more emphasized in the new energy field due to the characteristics of energy conservation and environmental protection, and the power battery is widely applied to various industries. Meanwhile, the safety performance of the power battery is receiving wide attention. In the prior art, in order to realize overcurrent protection of a power battery, a hole or a slot is usually formed in a pole so as to reduce the overcurrent area of the pole at the position of the hole or the cavity, form a fusing part and realize the function of overcurrent fusing.
Although the above mode can play overcurrent protection's effect, trompil or fluting can make the global emergence disconnection area of utmost point post on utmost point post, cause the current distribution of utmost point post of flowing through inhomogeneous, still can reduce the structural strength of utmost point post simultaneously.
Therefore, it is desirable to provide a pole, a power battery, a battery pack and an electric vehicle, which solve the technical problems of uneven current distribution on the pole and reduced structural strength of the pole caused by overcurrent protection of the power battery in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model provides a utmost point post, power battery, battery package and electric automobile aims at solving the technical problem such as the structural strength reduction that the current distribution is inhomogeneous and utmost point post on the utmost point post that overcurrent protection that exists for realizing power battery leads to among the prior art.
The utility model provides a utmost point post sets up on utmost point ear, utmost point post includes: pole portion and connecting portion, connecting portion connect in pole portion with between the utmost point ear, along predetermineeing the direction, pole portion part is inside sunken, forms first pole portion and fusing portion, fusing portion connect in first pole portion with between the connecting portion, connecting portion connect in utmost point ear, the cross-sectional area of fusing portion is less than the cross-sectional area of first pole portion with the cross-sectional area of connecting portion, just fusing portion fuse after overcurrent flows through with cut off with the connection of utmost point ear.
In a possible implementation of the present invention, the overload current density of the fusing part is 100A/mm2-260A/mm2。
In one possible embodiment of the present invention, the overcurrent density of the fusing part is 110A/mm2。
In one possible implementation of the present invention, the height of the fusing part is 0.5mm to 2 mm.
In a possible implementation manner of the present invention, the pole part further includes a second pole part, and the second pole part is connected between the fusing part and the connecting part; the cross-sectional area of the connection portion is larger than that of the second pole portion, and the cross-sectional area of the second pole portion is equal to that of the first pole portion.
The utility model relates to a possible implementation, first pole portion include first utmost point post body and fixed connection in first pole portion body with first utmost point post boss between the fusing portion, first utmost point post boss include first boss portion and fixed connection in first boss portion with second boss portion between the fusing portion.
In a possible implementation of the present invention, the second pole part includes: the second pole part body and the second pole boss are fixedly connected between the second pole part body and the fusing part.
In one possible implementation of the present invention, the first pole part, the fusing part, the connecting part, and the second pole part coincide with each other.
The utility model also provides a power battery, including utmost point post, utmost point post is the utmost point post in the arbitrary implementation of the aforesaid.
In a possible implementation manner of the utility model, the power battery comprises a top cover, an electric core, a polar lug and an insulating pad, the polar column penetrates through the top cover, one end of the polar column is connected with the electric core through the polar lug, and the other end of the polar column protrudes out of the surface of the top cover; and two ends of the insulating pad are respectively abutted to the pole and the top cover.
In one possible implementation of the present invention, the insulating pad is made of polyphenylene sulfide.
The utility model also provides a battery package, including utmost point post, utmost point post is the utmost point post in the arbitrary implementation of the aforesaid.
The utility model also provides an electric automobile, including utmost point post, utmost point post is the utmost point post in the arbitrary implementation of the aforesaid.
The utility model discloses a set up pole portion and connecting portion, and pole portion along predetermineeing the sunken fusing portion that forms of direction, fusing portion global not have the disconnection area to can make the current distribution homogenization in the fusing portion, simultaneously, still can improve the intensity of fusing portion.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a pole provided in an embodiment of the present invention;
fig. 2 is another schematic structural diagram of a pole provided in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a power battery according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present application, the word "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the invention. In the following description, details are set forth for the purpose of explanation. It will be apparent to one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and processes are not shown in detail to avoid obscuring the description of the invention with unnecessary detail. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
The embodiment of the utility model provides a utmost point post, power battery, battery package and electric automobile, the following detailed description that goes on.
As shown in fig. 1 and 2, the pole 100 includes: the pole part 101 and the connecting part 130, the connecting part 130 is connected between the pole part 101 and the tab, along the preset direction, the pole part 101 is partially recessed to form a first pole part 110 and a fusing part 120, the fusing part 120 is connected between the first pole part 110 and the connecting part 130, the connecting part 130 is connected to the tab, and the cross-sectional area of the fusing part 120 is smaller than that of the first pole part 110 and that of the connecting part 130.
It should be noted that: the included angle between the preset direction and the central line of the pole part 101 is greater than 0 degree and less than 180 degrees, and preferably, the included angle between the preset direction and the central line of the pole part 101 is 90 degrees.
It should also be noted that: the cross-sectional area in the embodiment of the present invention refers to a cross-sectional area in a direction perpendicular to the center line of the pole portion 101.
The utility model discloses a utmost point post 100's theory of operation does: because the cross-sectional area of the fusing part 120 is smaller than the cross-sectional area of the first pole part 110 and the cross-sectional area of the connecting part 130, when overcurrent occurs, the resistance of the fusing part 120 is the largest, and the fusing part 120 fuses due to the fact that large heat is generated at the fusing part 120, so that connection between the tab and the pole 100 is broken, damage to a battery cell due to overcurrent is avoided, and overcurrent protection is achieved.
The embodiment of the utility model provides a through setting up utmost point post portion 101 and connecting portion 130, and utmost point post portion 101 along predetermineeing the sunken first utmost point post portion 110 and the fusing portion 120 that forms of direction, the global disconnection area that does not of fusing portion 120 to can make the current distribution homogenization on the fusing portion 120, simultaneously, still can improve the intensity of fusing portion 120, and then realize improving the technological effect of the stability of utmost point post 100.
It should be noted that the first pole part 110, the fusing part 120 and the connecting part 130 are any one of a cube, a cuboid and a cylinder, in some embodiments of the present invention, the first pole part 110 and the fusing part 120 are cylinders, and the connecting part 130 is a cuboid.
It should also be noted that the utility model provides a fuse portion 120 is the solid structure, through the aforesaid setting, avoids the electric current to distribute on fuse portion 120, further improves the homogeneity of the electric current of flowing through fuse portion 120, simultaneously, also can further improve utmost point post 100's intensity, avoids damaging when fuse portion 120 receives impact or vibration.
Further, in some embodiments of the present invention, the overload current density of the fuse portion 120 is 100A/mm2-260A/mm2. Namely: when the current flowing through the fusing part 120 per unit area is 100A-260A, the fusing part 120 is fused, and when the fusing part 120 is fused, the current flowing through the fusing part 120 is an overcurrent. Further, in the practical use process of the pole 100, the overload current of the pole 100 is constant, and the overload current density of the fusing part 120 can be adjusted by adjusting the cross-sectional area of the fusing part 120, that is: by controlling the cross-sectional area of the fusing part 120, fusing of the fusing part 120 may be controlled.
Preferably, the over current density of the fusing part 120 is 110A/mm2. In other words, the cross-sectional area of the fusing part 120 is 1/110 of the overcurrent. Namely: the cross-sectional area of the fusing part 120 may be designed according to the overcurrent.
It should be understood that: when the height of fuse portion 120 is too small, can lead to when overflowing, fuse portion 120's resistance is too little, and unable fusing leads to fuse portion 120 to become invalid, and when fuse portion 120 was too big, can lead to the whole height of utmost point post 100 too big, influences utmost point post 100's stability. Accordingly, in some embodiments of the present invention, the height of the fusing part 120 is 0.5mm to 2 mm.
Preferably, the height of the fusing part 120 is 1 mm.
Further, as shown in fig. 2, in some embodiments of the present invention, the pole part 101 further includes a second pole part 140, and the second pole part 140 is connected between the fusing part 120 and the connecting part 130. By providing the second pole part 140, the convenience of replacing the fuse part 120 can be improved, and the situation that the fuse part 120 needs to be connected to the connecting part 130 again after the connecting part 130 is exposed after the fuse part 120 is fused can be avoided, and the replacement of the fuse part 120 can be realized only by exposing the second pole part 140. Meanwhile, the thickness of the connection part 140 can be reduced by providing the second pole part 140, and materials can be saved.
Further, the cross-sectional area of the connection portion 130 is larger than that of the second pole portion 140; the cross-sectional area of the second pole section 140 is equal to the cross-sectional area of the first pole section 110. Since the connection part 130 is used to connect the tab, the connection area between the connection part 130 and the tab may be increased and the stability of connection between the tab and the connection part 130 may be improved by setting the cross-sectional area of the connection part 130 to be larger than the cross-sectional area of the second pole part 140. By providing the second pole segment 140 with a cross-sectional area equal to the cross-sectional area of the first pole segment 110, material savings can be achieved while simplifying the connection between the pole 100 and the power cell top cover.
Further, in some embodiments of the present invention, as shown in fig. 2, the first pole section 110 includes a first pole body 111 and a first pole boss 112 fixedly connected to the first pole body 111 near the fuse 120, and the first pole boss 112 includes a first boss portion 1121 and a second boss portion 1122 fixedly connected to the first boss portion 1121 near the fuse 120. Through setting up first boss portion 1121 and second boss portion 1122, provide the location for the installation of first pole portion 110, improve the installation effectiveness of first pole portion 110, simultaneously, avoid first pole portion 110 installation back along its central line direction up-and-down motion, lead to utmost point post 100 to misplace, and when sealing first pole portion 110, avoid impurity such as dust, moisture to get into utmost point post 100 through the space between first pole portion 110 and the power battery top cap, improve utmost point post 100's leakproofness.
Further, in some embodiments of the present invention, the second pole part 140 includes: a second pole part body 141 and a second pole boss 142 fixedly connected to the second pole part body 141 near the fusing part 120. Through setting up second pole boss 142, provide the location for the installation of second pole portion 140, improve second pole portion 140's installation effectiveness, simultaneously, avoid second pole portion 140 installation back along its central line direction up-and-down motion, lead to utmost point post 100 dislocation, and when sealing second pole portion 140, avoid impurity such as dust, moisture to get into utmost point post 100 through the space between second pole portion 140 and the power battery top cap, further improve utmost point post 100's leakproofness.
Specifically, in practical application, in order to achieve the sealing performance between the pole 100 and the power battery top cover, an insulating pad is usually arranged between the pole 100 and the power battery top cover, the sealing performance between the pole 100 and the power battery top cover can be improved by arranging the first boss portion 1121, the second boss portion 1121 and the second pole boss 142, and meanwhile, the first boss portion 1121, the second boss portion 1121 and the second pole boss 142 are arranged, so that a positioning function can be provided for the installation of the insulating pad, and the installation difficulty is reduced.
Further, as shown in fig. 2, in some embodiments of the present invention, center lines of the first pole part 110, the fusing part 120, the connecting part 130, and the second pole part 140 coincide. Through the above arrangement, the stability of the pole 100 can be improved, and the pole 100 is prevented from being bent or dislocated when the pole 100 is impacted or vibrated, so that the pole 100 is damaged.
It should be noted that: in some embodiments of the present invention, the first pole part 110, the fusing part 120, and the second pole part 140 are integrally formed.
Further, as shown in fig. 3, the embodiment of the present invention further provides a power battery 10, where the power battery 10 includes a terminal post 100, and the terminal post 100 is located in any of the above embodiments.
In some embodiments of the present invention, the power battery 10 includes a top cap 200, an electrical core 300, a tab 400 and an insulating pad 500, the pole 100 penetrates through the top cap 200, one end of the pole 100 is connected to the electrical core 300 through the tab 400, and the other end of the pole 100 protrudes out of the surface of the top cap 200; the two ends of the insulating pad 500 are respectively abutted against the pole 100 and the top cover 200. The insulation between the top cap 200 and the pole post 100 is achieved by providing an insulating pad 500. The pole 100 is the pole 100 in any of the above embodiments.
Further, in some embodiments of the utility model, insulating pad 500 is made by polyphenylene sulfide (PPS), and insulating pad 500 made by PPS is insulating effectual, and its heat conductivility is good, can take place to overflow when producing the heat at utmost point post 100, with heat conduction to top cap 200 or external environment, avoids power battery 10 overheated, improves power battery 10's security.
Further, by providing the insulating pad 500, the pole 100 can be prevented from being broken or dislocated after being subjected to impact or vibration, and the safety of the power battery 10 is further improved.
Specifically, as shown in fig. 3, the insulating pad 500 includes an insulating pad body 510, and a first protruding portion 520, a second protruding portion 530 and a third protruding portion 540 fixedly connected to the insulating pad body 510, wherein the first protruding portion 520 abuts against the fuse portion 120, the second protruding portion 530 and the third protruding portion 540 respectively abut against the first pole portion 110 and the second pole portion 140, and one side of the insulating pad body 510 away from the pole 100 abuts against the top cover 200; the pole 100 passes through the top cover 200, the first pole part 110 protrudes from the top surface of the top cover 200, and the connecting part 130 protrudes from the bottom surface of the top cover 200.
The embodiment of the utility model provides a still provide a battery package, battery package is including utmost point post 100, and utmost point post 100 is utmost point post 100 in above-mentioned arbitrary embodiment.
The embodiment of the utility model provides an electric automobile is still provided, electric automobile includes utmost point post 100, utmost point post 100 in the above-mentioned arbitrary embodiment of utmost point post 100.
To sum up, the embodiment of the utility model provides a through setting up utmost point post portion 101 and connecting portion 130, and the first utmost point post portion 110 of sunken formation of utmost point post portion 101 along predetermineeing the direction and fusing portion 120, make fusing portion 120 global not have the disconnection area to can realize the homogenization of current distribution on fusing portion 120, simultaneously, still can improve fusing portion 120's intensity, and then realize improving the technological effect of utmost point post 100's stability.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and parts that are not described in detail in a certain embodiment may refer to the above detailed descriptions of other embodiments, and are not described herein again. In specific implementation, the above units or structures may be implemented as independent entities, or may be combined arbitrarily and implemented as one or several entities, which is not described herein again.
The pole, the power battery, the battery pack and the electric vehicle provided by the embodiment of the present invention are described in detail, and the principle and the implementation of the present invention are explained by applying specific examples, and the description of the above embodiments is only used to help understand the structure and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be some changes in the specific implementation and application scope, and to sum up, the content of the present specification should not be understood as a limitation to the present invention.
Claims (13)
1. The utility model provides an utmost point post, sets up on utmost point ear, its characterized in that, utmost point post includes utmost point post portion and connecting portion, connecting portion connect in utmost point post portion with between the utmost point ear, along predetermineeing the direction, utmost point post portion is inwards sunken, forms first utmost point post portion and fusing portion, fusing portion connect in first utmost point post portion with between the connecting portion, connecting portion connect in utmost point ear, fusing portion's cross-sectional area is less than the cross-sectional area of first utmost point post portion with the cross-sectional area of connecting portion, just fusing portion fuse after overcurrent flows through with cut off with the connection of utmost point ear.
2. A post according to claim 1, wherein said fuse portion has an overcurrent density of 100A/mm2-260A/mm2。
3. A post according to claim 2, wherein said fuse portion has an overcurrent density of 110A/mm2。
4. A post according to claim 1, wherein the height of the fusing portion is 0.5mm-2 mm.
5. The post according to claim 1, further comprising a second post portion connected between the fusing portion and the connecting portion; the cross-sectional area of the connection portion is larger than that of the second pole portion, and the cross-sectional area of the second pole portion is equal to that of the first pole portion.
6. The post according to claim 5, wherein the first post part comprises a first post part body and a first post boss fixedly connected between the first post part body and the fusing part, the first post boss comprising a first boss part and a second boss part fixedly connected between the first boss part and the fusing part.
7. The pole of claim 6, wherein the second pole portion comprises: the second pole part body and the second pole boss are fixedly connected between the second pole part body and the fusing part.
8. A pole according to claim 5, wherein the centre lines of the first pole part, the fusing part, the connecting part and the second pole part coincide.
9. A power battery, characterized by comprising a pole, wherein the pole is according to any one of claims 1 to 8.
10. The power battery of claim 9, wherein the power battery comprises a top cover, a cell, a tab, and an insulating pad; the pole column penetrates through the top cover, one end of the pole column is connected with the battery cell through the pole lug, the other end of the pole column protrudes out of the surface of the top cover, and two ends of the insulating pad are respectively abutted to the pole column and the top cover.
11. The power cell of claim 10, wherein the insulating mat is made of polyphenylene sulfide.
12. A battery pack, characterized in that it comprises a pole, said pole being according to any one of claims 1-8.
13. An electric vehicle, characterized in that it comprises a pole, said pole being according to any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021786575.8U CN212659648U (en) | 2020-08-24 | 2020-08-24 | Utmost point post, power battery, battery package and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021786575.8U CN212659648U (en) | 2020-08-24 | 2020-08-24 | Utmost point post, power battery, battery package and electric automobile |
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| Publication Number | Publication Date |
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| CN212659648U true CN212659648U (en) | 2021-03-05 |
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| CN202021786575.8U Active CN212659648U (en) | 2020-08-24 | 2020-08-24 | Utmost point post, power battery, battery package and electric automobile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113300036A (en) * | 2021-05-19 | 2021-08-24 | 安徽江淮汽车集团股份有限公司 | Battery module, integrated battery module and car |
| CN114335828A (en) * | 2021-12-30 | 2022-04-12 | 常州瑞德丰精密技术有限公司 | Battery, electric automobile and preparation method of battery |
-
2020
- 2020-08-24 CN CN202021786575.8U patent/CN212659648U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113300036A (en) * | 2021-05-19 | 2021-08-24 | 安徽江淮汽车集团股份有限公司 | Battery module, integrated battery module and car |
| CN114335828A (en) * | 2021-12-30 | 2022-04-12 | 常州瑞德丰精密技术有限公司 | Battery, electric automobile and preparation method of battery |
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