CN220984657U - Top cover assembly for battery and battery - Google Patents
Top cover assembly for battery and battery Download PDFInfo
- Publication number
- CN220984657U CN220984657U CN202322260773.0U CN202322260773U CN220984657U CN 220984657 U CN220984657 U CN 220984657U CN 202322260773 U CN202322260773 U CN 202322260773U CN 220984657 U CN220984657 U CN 220984657U
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- Prior art keywords
- battery
- pole
- mounting hole
- main body
- cover plate
- Prior art date
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Links
- 238000009434 installation Methods 0.000 claims abstract description 23
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 33
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 239000003792 electrolyte Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract 1
- 239000012212 insulator Substances 0.000 description 7
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 229920001774 Perfluoroether Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920011301 perfluoro alkoxyl alkane Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The application relates to a top cover assembly for a battery and the battery, wherein the battery comprises a battery core, the battery core is positioned below the top cover assembly, the top cover assembly comprises a cover plate and a pole, and the cover plate is provided with an installation space penetrating through the cover plate along a first direction; the mounting space is worn to establish by the utmost point post, and the utmost point post includes main part and the electrically conductive portion of being connected with main part, and electrically conductive portion is sunken to the direction that is close to the electric core from main part, and electrically conductive portion is used for being connected with the electric core to with the energy transmission of electric core to outside. Compared with the prior art, the pole structure is simpler, and the conductive part is recessed from the main body part to the direction close to the battery core to form the pole, so that the assembly complexity of the pole, the manufacturing difficulty of the pole and the assembly process of a finished product are greatly reduced, and the production efficiency and the yield of the product are greatly improved; meanwhile, the weight of the top cover assembly is reduced to the greatest extent, and manufacturing materials are saved.
Description
Technical Field
The present application relates to the field of battery technologies, and in particular, to a top cap assembly for a battery and a battery.
Background
The lithium ion battery is used as a novel secondary battery, has the advantages of high energy density and power density, high working voltage, light weight, small volume, long cycle life, good safety, environmental protection and the like, and has wide application prospect in the aspects of portable electric appliances, electric tools, large energy storage, transportation, power supply and the like. Lithium ion batteries are being developed towards a high lifetime, high safety, high magnification and low cost as green and environment-friendly new energy sources.
In the related art, a square lithium ion battery generally comprises a shell, a top cover plate, an electric core and the like. The battery core is an electrochemical battery core containing a positive electrode and a negative electrode, a plurality of battery cores are combined in a series-parallel connection mode to form a battery module, and the pole is an important component in the battery module. The pole is a part communicated with the inside and the outside of the battery, one end of the pole is connected with the electric core inside the battery, and the other end of the pole is connected with a circuit of electric equipment outside the battery, so that the battery can supply power to the electric equipment outside, and meanwhile, the battery can be charged.
However, the above-mentioned battery module has the problems of complex structure, complex stamping process and complex assembly steps during manufacturing, resulting in lower yield of the manufactured electrode product, and therefore, how to improve the structure of the electrode to simplify the stamping process is a problem to be solved by those skilled in the art.
Disclosure of Invention
Based on this, it is necessary to provide a top cap assembly for a battery and a battery, which are directed to the problems of the complicated structure, the complicated stamping process, and the complicated assembly steps, resulting in low yield of the manufactured pole product, when the pole is manufactured.
A first aspect of the present application provides a top cap assembly for a battery, including a cap plate provided with an installation space penetrating the cap plate in a first direction, and a post; the pole is installed in the installation space at least partially, and the pole includes main part and the electrically conductive portion of being connected with main part, and electrically conductive portion is sunken to be formed from main part to the direction that is close to the electric core, and electrically conductive portion protruding stretches out the installation space in order to be connected with the electric core.
In one embodiment, the mounting space includes a first mounting hole, a second mounting hole having an inner diameter smaller than that of the first mounting hole, and a step surface formed between the bottom end of the first mounting hole and the second mounting hole, the second mounting Kong Xiangjiao is closer to the battery cell in the first mounting hole, and the conductive portion is at least partially disposed in the second mounting hole.
In one embodiment, the top cover assembly further comprises an insulating member at least partially sandwiched between the inner wall of the mounting space and the main body portion.
In one embodiment, the insulating member includes a first insulating portion and a second insulating portion connected to the first insulating portion, the first insulating portion is sandwiched between the hole wall of the first mounting hole and the main body portion, and the second insulating portion is sandwiched between the main body portion and the step surface.
In one embodiment, the cap assembly further comprises a seal at least partially sandwiched between the wall of the mounting space and the body or conductive portion.
In one embodiment, the sealing member includes a first sealing portion and a second sealing portion connected to the first sealing portion, the first sealing portion being sandwiched between the step surface and the main body portion, the second sealing portion being sandwiched between an inner wall of the second mounting hole and the conductive portion.
A second aspect of the present application provides a battery including a battery cell, a case, and a top cap assembly for a battery according to any one of the above embodiments, wherein the case is provided with an opening, and the top cap assembly is disposed at the opening to block a receiving cavity and an external space.
In one embodiment, the cover plate is provided with a liquid injection hole which is communicated with the input end of the battery cell and used for injecting electrolyte into the battery cell.
In one embodiment, the electrode post comprises an anode post and a cathode post, the anode post and the cathode post are arranged on the cover plate along the second direction at intervals, the second direction is perpendicular to the first direction, the anode post is made of aluminum, and the cathode post is made of copper and aluminum.
In one embodiment, the battery further comprises a switching assembly, and the switching assembly is connected between the conductive part and the battery cell and is used for electrically connecting the conductive part and the battery cell.
In the top cover assembly for the battery, the structure of the pole is simpler than the prior art, and the conductive part is recessed from the main body part to the direction close to the battery core to form the pole, so that the assembly complexity of the pole, the manufacturing difficulty of the pole and the assembly process of a finished product are greatly reduced, and the production efficiency and the yield of the product are greatly improved; meanwhile, the weight of the top cover assembly is reduced to the greatest extent, and manufacturing materials are saved. In addition, the process steps of downwards stamping the conductive part during manufacturing the pole column are relatively simplified, the conductive part can be directly and tightly welded with the adapter, the stability and the safety performance of the battery are improved, and the safe performance of the battery charge and discharge operation is ensured.
Drawings
Fig. 1 is a schematic view of a battery according to an embodiment of the application.
Fig. 2 is an exploded view of a top cap assembly for a battery according to an embodiment of the present application.
Fig. 3 is a cross-sectional view of a cap assembly and a battery cell for a battery according to an embodiment of the present application.
Wherein, the reference numerals are as follows: the cap assembly 1 for a battery, the cap plate 11, the first mounting hole 111, the second mounting hole 112, the step surface 113, the top surface 114, the bottom surface 115, the injection hole 116, the explosion-proof hole 117, the post 12, the main body portion 121, the conductive portion 122, the insulator 13, the first insulator portion 131, the second insulator portion 132, the seal 14, the first seal portion 141, the second seal portion 142, the top sheet 15, the substrate 16, the case 2, the opening 21, the battery cell 3, the positive tab 31, the negative tab 32, the switching assembly 4, the positive tab 41, the negative tab 42, the explosion-proof assembly 5, the explosion-proof member 51, the protector 52.
Detailed Description
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.
In the description of the present application, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus 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 application.
Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.
In the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.
Referring to fig. 1, an embodiment of the present application provides a battery including a top cap assembly 1 for a battery, a case 2, and a battery cell 3. In the disclosed embodiments, the battery includes, but is not limited to, a square lithium ion battery. The housing 2 is provided with a containing cavity for containing the battery cell 3; the casing 2 is provided with opening 21, and top cap subassembly 1 sets up in the opening 21 department of casing 2, and is connected with electric core 3, and the electric energy of electric core 3 storage is transmitted to outside through top cap subassembly 1 for the power supply of the consumer of outside, top cap subassembly 1 is used for cutting off and holds chamber and external space.
Referring to fig. 2, the cap assembly 1 includes a cap plate 11 and a post 12. The cover plate 11 is connected to the opening 21 of the housing 2, and the cover plate 11 is an important carrier for assembling the components as a main part of the top cover assembly 1, and plays roles of sealing and explosion protection. The cover plate 11 is provided with an installation space penetrating the cover plate 11 in a first direction; the mounting space is worn to establish by the utmost point post 12, and the utmost point post 12 includes positive pole post and negative pole post, and correspondingly, the mounting space also is provided with two, and in positive pole post and negative pole post set up two mounting space along the second direction interval respectively, second direction perpendicular to first direction, positive pole post and negative pole post are used for switching on the inside and outside electric current of battery, and it can be understood that the structure, the size, the effect of positive pole post and negative pole post are basically the same, consequently only do detailed description to one of them below, and another utmost point post structure is not repeated.
Preferably, the positive pole is made of aluminum, and the negative pole is made of copper-aluminum composite.
As shown in fig. 2 and 3, the installation space includes a first installation hole 111, a second installation hole 112 having an inner diameter smaller than that of the first installation hole 111, and a stepped surface 113 formed between the bottom end of the first installation hole 111 and the second installation hole 112, the second installation hole 112 being closer to the cell 3 than the first installation hole 111, i.e., the second installation hole 112 being located between the first installation hole 111 and the cell 3.
The pole 12 includes a body portion 121 and a conductive portion 122. The main body 121 is parallel to the cover plate 11, the main body 121 is connected with the conductive part 122, the conductive part 122 penetrates through the first mounting hole 111 and the second mounting hole 112, the conductive part 122 is recessed from the main body 121 towards the direction close to the battery cell 3, and the conductive part 122 protrudes out of the second mounting hole 112 to be connected with the battery cell 3 for transmitting energy of the battery cell 3 to the outside. Compared with the prior art, the structure of the pole 12 is simpler, and the conductive part 122 is recessed from the main body part 121 towards the direction close to the battery core 3 to form the pole 12, so that the assembly complexity of the pole 12, the manufacturing difficulty of the pole 12 and the assembly process of a finished product are greatly reduced, and the production efficiency and the yield of the product are greatly improved; and simultaneously, the weight of the top cover assembly 1 is reduced to the greatest extent, and the manufacturing materials are saved. In addition, the process steps of punching the conductive part 122 downwards during manufacturing the pole 12 are relatively simplified, the conductive part 122 can be directly and tightly welded with the adapter, the stability and the safety performance of the battery are improved, and the safe performance of the battery charging and discharging operation is ensured.
The cap assembly 1 further includes an insulator 13, the insulator 13 being disposed between the cap plate 11 and the body portion 121 for insulating between the cap plate 11 and the pole 12.
The insulating member 13 is at least partially sandwiched between the inner wall of the installation space and the main body portion. Specifically, the insulator 13 includes a first insulating portion 131 and a second insulating portion 132. The first insulating portion 131 is connected to the second insulating portion 132, the first insulating portion 131 is bent by 90 degrees with respect to the second insulating portion 132, the first insulating portion 131 is sandwiched between the hole wall of the first mounting hole 111 and the main body portion 121, and the second insulating portion 132 is sandwiched between the stepped surface 113 and the main body portion 121.
The insulating member 13 may be an insulating mat having insulating properties, and in particular, the insulating member 13 may be made of insulating plastic or insulating rubber, and further, the insulating plastic includes one or more of polyphenylene sulfide PPS, perfluoroalkoxy resin PFA, or polypropylene PP.
The cap assembly 1 further includes a sealing member 14, the sealing member 14 being disposed between the cap plate 11 and the pole 12 for sealing a gap between the cap plate 11 and the pole 12.
The sealing member 14 is at least partially sandwiched between the inner wall of the installation space and the main body portion or the conductive portion. Specifically, the seal 14 includes a first seal portion 141 and a second seal portion 142. The first sealing portion 141 is connected to the second sealing portion 142, the first sealing portion 141 is bent by 90 degrees with respect to the second sealing portion 142, and the first sealing portion 141 is sandwiched between the step surface 113 and the main body portion 121 and is connected to the second insulating portion 132 of the insulating material 13; the second sealing portion 142 is sandwiched between the hole wall of the second mounting hole 112 and the conductive portion 122.
The sealing member 14 has good sealing performance, and the sealing member 14 can be made of fluororubber, ethylene propylene diene monomer or PFA.
In the embodiment disclosed in the present application, the first mounting hole 111 is a square hole, the second mounting hole 112 is a circular hole, and correspondingly, the main body 121 of the pole 12 is a square body, and the conductive portion 122 of the pole 121 is a circular body; further, the first insulating portion 131 of the insulating member 13 is square, the second insulating portion 132 of the insulating member 13 is provided with a circular hole, and the first sealing portion 141 and the second sealing portion 142 of the sealing member 14 are circular, so that the cover plate 11, the pole 12, the insulating member 13 and the sealing member 14 are matched and mounted. In other embodiments, the cover plate 11, the pole 12, the insulator 13, and the seal 14 may be formed in other shapes, so long as mating mounting between the components is achieved in the disclosed embodiments.
It will be appreciated that the insulating member 13 and the sealing member 14 ensure that the sealing is perfect at the position where the pole 12 is located, while ensuring that the pole 12 and the cover plate 11 are insulated from each other. The insulating piece 13 and the sealing piece 14 are buckled between the cover plate 11 and the pole 12, so that the pole 12 can be supported and limited, the stability of the pole 12 is ensured, and the structural strength and the use safety of the battery are improved.
The cover plate 11 includes a top surface 114 and a bottom surface 115 disposed opposite in the first direction. The top surface 114 of the cover plate 11 is provided with a top patch 15 (as shown in fig. 1), the top patch 15 is made of a metal insulating material, preferably, the top patch 15 is made of aluminum, which can prevent electrolyte inside the battery from corroding the top patch 15, and of course, the top patch 15 can be made of other metals with electrolyte corrosion preventing functions. The bottom surface 115 of the cover plate 11 is provided with a base plate 16, and the base plate 16 is used for supporting the cover plate 11. The cover plate 11 is provided with a liquid injection hole 116, and the liquid injection hole 116 is communicated with the input end of the battery cell 3 and is used for injecting electrolyte into the battery cell 3.
The battery also includes a switch assembly 4. The switching assembly 4 comprises a positive electrode switching piece 41 and a negative electrode switching piece 42, and a positive electrode column and a negative electrode column are respectively connected with the positive electrode lug 31 and the negative electrode lug 32 of the battery cell 3 through the positive electrode switching piece 41 and the negative electrode switching piece 42 so as to ensure the normal operation of the charge and discharge operation of the battery cell 3. The positive electrode tab 41 and the negative electrode tab 42 are made of copper or aluminum, and the copper or aluminum wire has good performance and is easily welded to the post 12. In other embodiments, the material of the switching piece may be selected according to the material of the pole 12 and the pole ear, preferably, the switching piece is made of the same material as the material of the pole ear and the pole 12, which is beneficial to improving the welding effect of the switching piece and the pole 12 and ensuring the service performance of the battery.
The battery also comprises an explosion-proof component 5, the explosion-proof component 5 comprises an explosion-proof piece 51 and a protective piece 52, and the explosion-proof component 5 can protect the airtight seal of the cover plate 11 and the battery cell 3 and also plays an explosion-proof role. Specifically, the cap plate 11 is provided with explosion-proof holes 117, the explosion-proof holes 117 being located between the positive and negative electrode posts, and the explosion-proof pieces 51 and the protection pieces 52 being disposed in the explosion-proof holes 117 at intervals. Specifically, the explosion-proof piece 51 is arranged at the end part of the explosion-proof hole 117, which is close to the bottom surface 115, and under the condition that the internal pressure of the battery shell 2 is too high, the explosion-proof piece 41 can be naturally opened for pressure relief, so that the explosion of the battery core 3 is prevented, and the use safety of the battery is ensured; further, the explosion-proof member 51 is configured to be able to be exploded, when the temperature of the gas inside the battery case 2 is overheated or the gas pressure is too high, the explosion-proof member 51 is able to be exploded, an exhaust port is formed at the explosion-proof hole 117, and the accommodating chamber is promptly subjected to the pressure relief. Further, the explosion-proof member 51 can also prevent the electrolyte from overflowing from the explosion-proof hole 117. The protection piece 52 is disposed at the end of the explosion-proof hole 117 near the top surface 114, and the protection piece 52 can prevent foreign objects from extruding the explosion-proof piece 51, and can prevent the explosion-proof piece 51 from being polluted by the external environment.
According to the application, through the installation and matching among the cover plate 11, the pole 12, the insulating piece 13 and the sealing piece 14, the manufacturing difficulty and the manufacturing process of each component can be effectively reduced, the assembly process of the finished product of the top cover assembly 1 can be effectively reduced, meanwhile, the weight of the top cover assembly 1 is reduced to the greatest extent, the manufacturing materials are saved, the forming structure of the top cover assembly 1 is more compact, and the structural strength is more stable.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (10)
1. A top cap assembly for a battery, the top cap assembly comprising:
the cover plate is provided with an installation space penetrating through the cover plate along a first direction; and
The pole is at least partially installed in the installation space, the pole comprises a main body part and a conductive part connected with the main body part, the conductive part is formed by sinking from the main body part towards a direction close to the battery cell, and the conductive part protrudes out of the installation space to be connected with the battery cell.
2. The top cap assembly for a battery according to claim 1, wherein the mounting space includes a first mounting hole, a second mounting hole having an inner diameter smaller than that of the first mounting hole, and a stepped surface formed between a bottom end of the first mounting hole and the second mounting hole, the second mounting hole being closer to the battery cell than the first mounting hole, the conductive portion being at least partially penetrated in the second mounting hole.
3. The top cap assembly for a battery according to claim 2, further comprising an insulating member at least partially interposed between an inner wall of the installation space and the main body portion.
4. The top cap assembly for a battery according to claim 3, wherein the insulating member includes a first insulating portion interposed between the hole wall of the first mounting hole and the main body portion, and a second insulating portion connected to the first insulating portion interposed between the main body portion and the step surface.
5. The top cover assembly for a battery according to any one of claims 2 to 4, further comprising a sealing member at least partially interposed between an inner wall of the installation space and the main body portion or the conductive portion.
6. The top cap assembly for a battery according to claim 5, wherein the sealing member includes a first sealing portion interposed between the step surface and the main body portion, and a second sealing portion connected to the first sealing portion interposed between a wall of the second mounting hole and the conductive portion.
7. A battery, comprising:
A battery cell;
the shell is provided with an accommodating cavity which is used for accommodating the battery cell; and
The top cap assembly for a battery according to any one of claims 1 to 6;
Wherein, the casing is provided with the opening, the top cap subassembly set up in the opening is used for cutting off hold chamber and external space.
8. The battery of claim 7, wherein the cover plate is provided with a fluid injection hole in communication with an input of the cell for injecting electrolyte into the cell.
9. The battery of claim 7, wherein the positive electrode post comprises a positive electrode post and a negative electrode post, the positive electrode post and the negative electrode post are arranged on the cover plate at intervals along a second direction, the second direction is perpendicular to the first direction, the positive electrode post is made of aluminum, and the negative electrode post is made of copper-aluminum composite.
10. The battery of any of claims 7-9, further comprising a transfer assembly coupled between the conductive portion and the cell for electrically connecting the conductive portion and the cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322260773.0U CN220984657U (en) | 2023-08-22 | 2023-08-22 | Top cover assembly for battery and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322260773.0U CN220984657U (en) | 2023-08-22 | 2023-08-22 | Top cover assembly for battery and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220984657U true CN220984657U (en) | 2024-05-17 |
Family
ID=91063738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322260773.0U Active CN220984657U (en) | 2023-08-22 | 2023-08-22 | Top cover assembly for battery and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220984657U (en) |
-
2023
- 2023-08-22 CN CN202322260773.0U patent/CN220984657U/en active Active
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