CN217562767U - Secondary battery assembly structure and secondary battery - Google Patents
Secondary battery assembly structure and secondary battery Download PDFInfo
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- CN217562767U CN217562767U CN202221295163.3U CN202221295163U CN217562767U CN 217562767 U CN217562767 U CN 217562767U CN 202221295163 U CN202221295163 U CN 202221295163U CN 217562767 U CN217562767 U CN 217562767U
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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 application relates to a secondary battery assembly structure and a secondary battery, which belong to the technical field of secondary batteries and comprise: the switching conductor comprises two pole connecting sheets and two lug connecting sheets which are arranged in a height difference manner, the two lug connecting sheets are respectively connected to the two sides of the pole connecting sheets, and the lug connecting sheets are positioned above the pole connecting sheets; the battery cell assembly comprises at least two battery cells arranged side by side, the battery cells extend to form pole lugs, and the pole lugs of the battery cells are welded and connected with the top surfaces of the pole lug connecting sheets after being folded. The utility model provides a utmost point ear welding is at the top surface of utmost point ear connection piece, and the switching conductor can support the utmost point ear of electric core through utmost point ear connection piece, effectively improves the form of closing utmost point ear behind the core, and utmost point ear can not redundant, sink, and utmost point ear does not have the risk of inserting in the pole piece, and secondary battery does not have short circuit safety risk.
Description
Technical Field
The present disclosure relates to secondary battery technologies, and particularly to a secondary battery assembly structure and a secondary battery.
Background
At present, a secondary battery usually comprises a top cover, a shell, an electric core and an adapter plate, the assembly structure inside the battery usually comprises two types, the first type is that one or more electric core pole lugs are arranged below the adapter plate and are connected with the adapter plate in a welding manner, and the adapter plate for connecting the electric core pole lugs is connected with the pole columns of the top cover in a welding manner. The second is to arrange one or more battery cell tabs above the pole and directly connect the battery cell tabs with the top cover pole in a welding manner. After the connection of the pole lugs and the pole columns is realized, the battery cell is arranged in the shell through bending the pole lugs, and the structural assembly of the secondary battery is completed.
The two assembling structures have various problems respectively, the first assembling structure is that the lug is positioned below the adapter plate, the lug folding space is reduced, meanwhile, the paths from each layer of lug to the welding position of the adapter plate are inconsistent, the loosening states are different, the problems of lug redundancy, lug sinking and the like can be caused, the lug is in contact with the pole piece, and the short circuit safety risk of the battery is increased. Meanwhile, the tab of the connection mode is longer, so that the internal resistance of the battery is increased, the performance of the battery is influenced, and the capacity density of the battery is also influenced. On the other hand, the tabs are extruded, the tabs on the outer side are stressed, the tabs are easy to damage and break, overcurrent capacity is reduced, and performance and service life of the battery are affected.
The second assembly structure is that the tabs are positioned below the poles, and although the adapter plate is cancelled, the problems of inconsistent paths and different loosening states of each layer of tabs to the welding part of the poles still exist, and the tabs are not supported by the adapter plate, so that the problems of tab redundancy, tab sinking and the like are easily caused, the tabs are easily inserted into the pole pieces, and the safety risk of short circuit of the battery is increased. Meanwhile, the assembly structure is only suitable for the secondary battery with smaller thickness and size and has larger limitation. The secondary battery with larger thickness dimension has longer length of the electrode lug of the battery core, the problem of electrode lug redundancy and sinking is more serious, and the short circuit safety risk of the battery is higher while the performance of the battery is influenced.
Disclosure of Invention
The embodiment of the application provides a secondary battery assembly structure and a secondary battery to solve the problem that in the prior art, a pole lug is located below an adapter plate, and the problem that the pole lug is redundant and sinks can be caused due to the fact that the path from each layer of pole lug to the welding position of the adapter plate is inconsistent and the relaxation state is different.
A first aspect of an embodiment of the present application provides a secondary battery assembly structure, including:
the switching conductor comprises two pole connecting sheets and two pole lug connecting sheets which are arranged in a height difference manner, the two pole lug connecting sheets are respectively connected to the two sides of each pole connecting sheet, and the pole lug connecting sheets are positioned above the pole connecting sheets;
the battery core assembly comprises at least two battery cores arranged side by side, and the battery cores extend to form pole lugs, and the pole lugs of the battery cores are welded and connected with the top surfaces of the pole lug connecting sheets after being folded.
In some embodiments: the pole connecting sheet and the pole lug connecting sheet are of a copper plate or aluminum plate integrated structure with set thickness, and one end of the pole connecting sheet is provided with an avoidance hole or an avoidance groove for avoiding the liquid injection hole;
the other end of the pole connecting sheet is provided with a pole connecting end extending away from the groove direction, and one side of the pole lug connecting sheet away from the pole connecting sheet is provided with a chamfer or a fillet.
In some embodiments: and the lug is wound to the upper part of the adapter conductor from the side part of the adapter conductor and is connected with the top surface of the lug connecting sheet in a welding way.
In some embodiments: the switching conductor comprises a positive switching conductor and a negative switching conductor, and the tabs comprise positive tabs connected with the positive switching conductor in a welded mode and negative tabs connected with the negative switching conductor in a welded mode.
In some embodiments: the top cover assembly comprises a top cover plate and an insulating piece positioned at the bottom of the top cover plate, and the insulating piece is positioned at the top of the switching conductor;
the top welding of switching conductor has the lower utmost point post that upwards sees through the insulating part, the top surface of lamina tecti is equipped with and sees through lamina tecti downwards and with lower utmost point post welded last utmost point post.
In some embodiments: the bottom surface of insulating part is equipped with the location the lower positioning groove of utmost point post down, the top surface of lamina tecti is equipped with the location go up the last positioning groove of utmost point post, be equipped with the last plastic of insulating utmost point post and lamina tecti in the last positioning groove.
In some embodiments: the lower pole column is connected with the top cover plate in a sealing mode through a first sealing ring, and the upper pole column is connected with the top cover plate in a sealing mode through a second sealing ring.
In some embodiments: the terminal post connecting piece is provided with a connecting hole connected with a lower terminal post, the bottom surface of the lower terminal post is provided with a boss positioned in the connecting hole, and the boss is welded with the terminal post connecting piece.
In some embodiments: the electric core assembly comprises four electric cores arranged side by side, and lugs of two adjacent electric cores with the same polarity are welded and connected with the top surfaces of the lug connecting sheets after being folded.
A second aspect of the embodiments of the present application provides a secondary battery including the secondary battery assembly structure according to any one of the embodiments described above; and a battery case accommodating the secondary battery assembly structure.
The technical scheme who provides this application brings beneficial effect includes:
the embodiment of the application provides a secondary battery assembly structure and a secondary battery, and the secondary battery assembly structure is provided with a switching conductor, wherein the switching conductor comprises a pole connecting sheet and a pole lug connecting sheet which are arranged in a height difference manner, the two pole lug connecting sheets are respectively connected to two sides of the pole connecting sheet, and the pole lug connecting sheets are positioned above the pole connecting sheets; the battery cell assembly comprises at least two battery cells arranged side by side, the battery cells extend to form pole lugs, and the pole lugs of the battery cells are welded and connected with the top surfaces of the pole lug connecting sheets after being folded.
Therefore, the secondary battery assembly structure of this application draws in the utmost point ear of electric core in the back and the top surface welded connection of the utmost point ear connection piece of switching conductor, and the switching conductor has set up the utmost point post connection piece of being connected with utmost point post to and the utmost point ear connection piece of being connected with utmost point ear, be the difference in height setting between utmost point post connection piece and the utmost point ear connection piece, and utmost point ear connection piece is located the top of utmost point post connection piece. Tab welding is at the top surface of utmost point ear connection piece, and the switching conductor can support the utmost point ear of electric core through utmost point ear connection piece, effectively improves the form of utmost point ear behind the core that closes, and utmost point ear can not redundant, sink, and utmost point ear does not have the risk of inserting in the pole piece, and secondary battery does not have short circuit safety risk.
In addition, the secondary battery assembly structure of this application draws in the utmost point ear of electric core in the back and the top surface welded connection of the utmost point ear connection piece of switching conductor, has reduced the height between top cap subassembly to the electric core, has promoted the height of electric core, very big promotion secondary battery's volume energy density. And meanwhile, the lug is positioned at the top of the switching conductor, so that the lug cannot be extruded and is not stressed, the lug cannot be damaged and broken, and the performance and the service life of the secondary battery are improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a bottom view of the structure of the electric core assembly and the transition conductor core assembly of the present application before being inserted into the housing;
fig. 2 is a schematic structural diagram of a battery cell according to an embodiment of the present application;
FIG. 3 is a schematic view of a transition conductor according to an embodiment of the present application;
fig. 4 is a bottom view of the electric core assembly, the transition conductors and the top cover assembly of the present application before the combined core is inserted into the housing;
FIG. 5 is a left side view of the core assembly, transition conductor and cap assembly of the present application prior to insertion into the housing;
FIG. 6 is a partial enlarged view of the portion A in FIG. 5;
fig. 7 is an exploded view of the structure of a secondary battery according to an embodiment of the present application;
fig. 8 is a sectional view showing the structure of a secondary battery of the embodiment of the present application;
FIG. 9 is an enlarged view of a portion of FIG. 8 at B;
fig. 10 is a sectional view showing the structure of a four-cell secondary battery according to an embodiment of the present application;
fig. 11 is a partially enlarged view of fig. 10 at C.
Reference numerals:
11. a cap assembly; 12. a positive transfer conductor; 13. a negative transfer conductor; 14. an electric core; 15. a battery case; 111. a top cover plate; 112. an insulating member; 113. a lower pole column; 114. arranging a pole; 115. plastic is coated; 116. a second seal ring; 117. a first seal ring; 121. connecting the pole column with a connecting sheet; 122. a tab connecting sheet; 141. a first cell; 141a, a first positive electrode tab; 141b, a first negative electrode tab; 142. a second cell; 142a, a second positive electrode tab; 142b, a second negative electrode tab; 143. a third cell; 143a, a third positive electrode tab; 144. a fourth cell; 144a, a fourth positive electrode tab, and S1 to S6 are first to sixth welding points in sequence.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making creative efforts shall fall within the protection scope of the present application.
The embodiment of the application provides a secondary battery assembly structure and a secondary battery, which can solve the problems that in the related art, a pole lug is positioned below an adapter plate, and the path from each layer of pole lug to the welding position of the adapter plate is inconsistent and the loose state is different, so that the pole lug is redundant and sinks.
Referring to fig. 1 to 3, a first aspect of an embodiment of the present application provides a secondary battery assembly structure including:
the switching conductor comprises a positive switching conductor 12 and a negative switching conductor 13, the positive switching conductor 12 and the negative switching conductor 13 respectively comprise a pole connecting piece 121 and a pole connecting piece 122 which are arranged in a height difference mode, the pole connecting pieces 122 are two, the two pole connecting pieces 122 are connected to the two sides of the pole connecting piece 121 respectively, and the pole connecting pieces 122 are located above the pole connecting pieces 121.
The battery cell assembly comprises at least two battery cells 14 arranged side by side, the two battery cells 14 arranged side by side are respectively a first battery cell 141 and a second battery cell 142, and the first battery cell 141 and the second battery cell 142 respectively extend to form a tab. The tabs include a positive tab welded to the positive adapter conductor 12 and a negative tab welded to the negative adapter conductor 13. After being folded, the tab of each cell is wound from the side part of the switching conductor to the upper part of the switching conductor and is connected with the top surface of the tab connecting piece 122 in a welding way.
The positive electrode tabs include a first positive electrode tab 141a located on the first cell 141, and a second positive electrode tab 142a located on the second cell 142, and the negative electrode tabs include a first negative electrode tab 141b located on the first cell 141, and a second negative electrode tab 142b located on the second cell 142.
The first positive electrode tab 141a is welded to the top surface of one of the tab connecting pieces 122 of the positive electrode adapting conductor 12 to form a first welding point S1, and the second positive electrode tab 142a is welded to the top surface of the other tab connecting piece 122 of the positive electrode adapting conductor 12 to form a second welding point S2. The first negative electrode tab 141b is welded to the top surface of one of the tab connection pieces 122 of the negative electrode transfer conductor 13 to form a third welding point S3, and the second negative electrode tab 142b is welded to the top surface of the other tab connection piece 122 of the negative electrode transfer conductor 13 to form a fourth welding point S4.
The secondary battery assembly structure of the embodiment of the application is connected with the lug connecting piece 122 of the switching conductor in a welding manner after the lug of the battery cell 14 is folded, the switching conductor is provided with the pole connecting piece 121 connected with the pole and the lug connecting piece 122 connected with the pole, the height difference is formed between the pole connecting piece 121 and the lug connecting piece 122, and the lug connecting piece 122 is positioned above the pole connecting piece 121. The utmost point ear welding is at utmost point ear connection piece 122's top surface, and the conductor of switching can support the utmost point ear of electric core 14 through utmost point ear connection piece 122, effectively improves the form of closing core back utmost point ear, and utmost point ear can not redundant, sink, and utmost point ear does not have the risk of inserting in the pole piece, and secondary battery does not have short circuit safety risk.
In addition, the secondary battery assembly structure of this application embodiment draws in the back with the utmost point ear of electric core and the top surface welded connection of the utmost point ear connection piece 122 of switching conductor in, has reduced the height between top cap subassembly 11 to electric core 14, has promoted electric core 14's height, very big promotion secondary battery's volume energy density. And meanwhile, the lug is positioned at the top of the switching conductor, so that the lug cannot be extruded and is not stressed, the lug cannot be damaged and broken, and the performance and the service life of the secondary battery are improved.
In some alternative embodiments: referring to fig. 3, the present embodiment provides a secondary battery assembly structure, in which a terminal connecting sheet 121 and a terminal connecting sheet 122 are integrally formed by stamping a copper plate or an aluminum plate with a predetermined thickness, and one end of the terminal connecting sheet is provided with an avoiding hole or an avoiding groove for avoiding a liquid injection hole. The other end of the pole connecting sheet 121 is provided with a pole connecting end extending away from the groove direction, and one side of the pole connecting sheet 122 away from the pole connecting sheet 121 is provided with a chamfer or a fillet.
Utmost point post connection piece 121 and utmost point ear connection piece 122 are for setting for the integrative stamping forming structure of copper or aluminum plate of thickness, guarantee the electrically conductive reliability of switching conductor, and the one end of utmost point post connection piece is equipped with dodges and annotates the hole of dodging or dodge the groove of liquid hole, can make top cap subassembly 11 pour into electrolyte into to electric core 14. One side of the tab connecting piece 122, which is far away from the pole connecting piece 121, is provided with a chamfer or a fillet, and when the tab connecting piece 122 supports a tab, the chamfer or the fillet is favorable for supporting the tab, so that the tab cannot be torn due to burrs and sharp corners.
In some alternative embodiments: referring to fig. 4 to 6, the present embodiment provides a secondary battery assembly structure, further including a top cap assembly 11, where the top cap assembly 11 includes a top cap plate 111 and an insulating member 112 located at the bottom of the top cap plate 111, and the insulating member 112 is located at the top of the via conductor. The top of the switching conductor is welded with a lower pole 113 which upwards penetrates through the insulating part, the positive switching conductor 12 is welded with the lower pole 113 to form a fifth welding point S5, the negative switching conductor 13 is welded with the lower pole 113 to form a sixth welding point S6, and the top surface of the top cover plate 111 is provided with an upper pole 114 which downwards penetrates through the top cover plate 111 and is welded with the lower pole 113.
The bottom surface of the insulating part 112 is provided with a lower positioning groove for positioning the lower pole 113, the top surface of the top cover plate 111 is provided with an upper positioning groove for positioning the upper pole 114, and the upper positioning groove is internally provided with an upper insulating pole 114 and upper plastic 115 of the top cover plate 111. The lower pole 113 is hermetically connected with the top cover plate 111 through a first sealing ring 117, and the upper pole 114 is hermetically connected with the top cover plate 111 through a second sealing ring 116, so that the sealing performance is improved, and the electrolyte is prevented from leaking.
A connection hole (not shown) for connecting the lower pole is formed in the pole connection plate 121, and a boss located in the connection hole is formed in the bottom surface of the lower pole 113 and is welded to the pole connection plate 121. The boss of lower pole post 113 is located the connecting hole, and the bottom surface of boss flushes with the bottom surface of utmost point post connection piece 121 to reduce the space height between utmost point post connection piece 121 and lower pole post 113, increase electric core 14's height promotes secondary battery's volume energy density.
In some alternative embodiments: referring to fig. 10 and fig. 11, an embodiment of the present application provides a secondary battery assembly structure, where the battery core assembly of the secondary battery assembly structure includes four battery cores 14 arranged side by side, the four battery cores 14 arranged side by side are a first battery core 141, a second battery core 142, a third battery core 143, and a fourth battery core 144, and tabs with the same polarity in two adjacent battery cores 14 in the four battery cores 14 are collected and then welded to the top surface of the tab connecting plate 122.
The first positive electrode tab 141a of the first cell 141 and the second positive electrode tab 142a of the second cell 142 are gathered together and then welded to the top surface of one of the tab connecting pieces 122 of the positive electrode transition conductor 12. The third positive tab 143a of the third cell 143 and the fourth positive tab 144a of the fourth cell 144 are collected together and then welded to the top surface of the other tab connecting piece 122 of the positive adapter conductor 12.
Referring to fig. 7 to 11, a second aspect of the embodiments of the present application provides a secondary battery including the secondary battery assembly structure according to any one of the embodiments described above; and a battery case 15 accommodating the secondary battery mounting structure. When the two battery cells 14 are provided, the first battery cell 141 and the second battery cell 142 are stacked and inserted into the battery case 15, and the top cover assembly 11 closes the top opening of the battery case 15. When the number of the battery cells 14 is four, the first to fourth battery cells 141 to 144 are stacked and inserted into the battery case 15, and the top cap assembly 11 closes the top opening of the battery case 15.
Principle of operation
The embodiment of the application provides a secondary battery assembly structure and a secondary battery, because the secondary battery assembly structure is provided with a switching conductor, the switching conductor comprises a pole connecting piece 121 and a pole connecting piece 122 which are arranged in a height difference manner, two pole connecting pieces 122 are arranged and are respectively connected to two sides of the pole connecting piece 121, and the pole connecting piece 122 is positioned above the pole connecting piece 121; the battery core assembly comprises at least two battery cores 14 arranged side by side, the battery cores 14 extend out to form polar lugs, and the polar lugs of each battery core 14 are welded and connected with the top surfaces of the polar lug connecting sheets 122 after being folded.
Therefore, the secondary battery assembly structure of this application draws in the utmost point ear of electric core 14 back and the top surface welded connection of the utmost point ear connection piece 122 of switching conductor in, and the switching conductor has set up the utmost point post connection piece 121 of being connected with utmost point post to and the utmost point ear connection piece 122 of being connected with utmost point ear, be the difference in height setting between utmost point post connection piece 121 and the utmost point ear connection piece 122, and utmost point ear connection piece 122 is located the top of utmost point post connection piece 121. Tab welding is on the top surface of utmost point ear connection piece 122, and the switching conductor can support the utmost point ear of electric core 14 through utmost point ear connection piece 122, effectively improves the form of closing utmost point ear behind the core, and utmost point ear can not redundant, sink, and utmost point ear does not have the risk of inserting in the pole piece, and secondary battery does not have short circuit safety risk.
In addition, the secondary battery assembly structure of this application draws in the back with the utmost point ear connection piece 122's of switching conductor top surface welded connection in the utmost point ear of electric core, has reduced the height between top cap subassembly 11 to electric core 14, has promoted electric core 14's height, very big promotion secondary battery's volume energy density. Meanwhile, the tab is positioned at the top of the switching conductor, so that the tab cannot be extruded and is not stressed, the tab cannot be damaged and broken, and the performance and the service life of the secondary battery are improved.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A secondary battery assembling structure, characterized by comprising:
the switching conductor comprises pole connecting sheets (121) and pole lug connecting sheets (122) which are arranged in a height difference mode, the two pole lug connecting sheets (122) are arranged and are respectively connected to the two sides of the pole connecting sheets (121), and the pole lug connecting sheets (122) are located above the pole connecting sheets (121);
the battery core assembly comprises at least two battery cores (14) arranged side by side, wherein the battery cores (14) extend to form pole lugs, and the pole lugs of the battery cores (14) are connected with the top surfaces of the pole lug connecting plates (122) in a welded mode after being folded.
2. A secondary battery assembling structure as claimed in claim 1, wherein:
the pole connecting piece (121) and the pole lug connecting piece (122) are of a copper plate or aluminum plate integrated structure with set thickness, and one end of the pole connecting piece (121) is provided with an avoidance hole or an avoidance groove for avoiding a liquid injection hole;
the other end of the pole connecting piece (121) is provided with a pole connecting end extending away from the groove direction, and one side of the pole connecting piece (122) away from the pole connecting piece (121) is provided with a chamfer or a fillet.
3. A secondary battery assembling structure according to claim 1 or 2, wherein:
the pole ear is wound from the side part of the transfer conductor to the upper part of the transfer conductor and is connected with the top surface of the pole ear connecting piece (122) in a welding way.
4. A secondary battery assembling structure as claimed in claim 1 or 2, wherein:
the adapter conductor comprises a positive electrode adapter conductor (12) and a negative electrode adapter conductor (13), and the tabs comprise positive electrode tabs connected with the positive electrode adapter conductor (12) in a welded mode and negative electrode tabs connected with the negative electrode adapter conductor (13) in a welded mode.
5. A secondary battery assembling structure according to claim 1, wherein:
the top cover assembly (11) comprises a top cover plate (111) and an insulating piece (112) positioned at the bottom of the top cover plate (111), wherein the insulating piece (112) is positioned at the top of the transit conductor;
the top welding of switching conductor has lower utmost point post (113) that upwards sees through insulating part (112), the top surface of top cover board (111) is equipped with downwards sees through top cover board (111) and with lower utmost point post (113) welded last utmost point post (114).
6. A secondary battery assembling structure according to claim 5, wherein:
the bottom surface of insulating part (112) is equipped with the location the lower positioning groove of utmost point post (113) down, the top surface of lamina tecti (111) is equipped with the location go up the positioning groove of utmost point post (114), go up and be equipped with insulating last utmost point post (114) and last plastic (115) of lamina tecti (111) in the positioning groove.
7. A secondary battery assembling structure according to claim 5, wherein:
the lower pole column (113) is in sealing connection with the top cover plate (111) through a first sealing ring (117), and the upper pole column (114) is in sealing connection with the top cover plate (111) through a second sealing ring (116).
8. A secondary battery assembling structure according to claim 5, wherein:
the terminal post connecting piece (121) is provided with a connecting hole connected with a lower terminal post (113), the bottom surface of the lower terminal post (113) is provided with a boss positioned in the connecting hole, and the boss is welded with the terminal post connecting piece (121).
9. A secondary battery assembling structure according to claim 1, wherein:
the electric core assembly comprises four electric cores (14) arranged side by side, and the lugs with the same polarity in two adjacent electric cores (14) in the four electric cores (14) are welded and connected with the top surface of the lug connecting sheet (122) after being folded.
10. A secondary battery characterized by comprising the secondary battery assembly structure of any one of claims 1 to 9;
and a battery case (15) that houses the secondary battery assembly structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221295163.3U CN217562767U (en) | 2022-05-25 | 2022-05-25 | Secondary battery assembly structure and secondary battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221295163.3U CN217562767U (en) | 2022-05-25 | 2022-05-25 | Secondary battery assembly structure and secondary battery |
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| CN217562767U true CN217562767U (en) | 2022-10-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115458872A (en) * | 2022-11-10 | 2022-12-09 | 瑞浦兰钧能源股份有限公司 | Secondary cell's switching piece |
| CN116780067A (en) * | 2023-08-16 | 2023-09-19 | 深圳海辰储能控制技术有限公司 | Energy storage device and electric equipment |
| WO2024077480A1 (en) * | 2022-10-11 | 2024-04-18 | 宁德时代新能源科技股份有限公司 | Adapter plate, battery cell, battery and electric device |
-
2022
- 2022-05-25 CN CN202221295163.3U patent/CN217562767U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024077480A1 (en) * | 2022-10-11 | 2024-04-18 | 宁德时代新能源科技股份有限公司 | Adapter plate, battery cell, battery and electric device |
| CN115458872A (en) * | 2022-11-10 | 2022-12-09 | 瑞浦兰钧能源股份有限公司 | Secondary cell's switching piece |
| CN116780067A (en) * | 2023-08-16 | 2023-09-19 | 深圳海辰储能控制技术有限公司 | Energy storage device and electric equipment |
| CN116780067B (en) * | 2023-08-16 | 2023-10-24 | 深圳海辰储能控制技术有限公司 | Energy storage device and electric equipment |
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