CN103178231A - Assembly process for electrode lead-out structure - Google Patents
Assembly process for electrode lead-out structure Download PDFInfo
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- CN103178231A CN103178231A CN2013101030264A CN201310103026A CN103178231A CN 103178231 A CN103178231 A CN 103178231A CN 2013101030264 A CN2013101030264 A CN 2013101030264A CN 201310103026 A CN201310103026 A CN 201310103026A CN 103178231 A CN103178231 A CN 103178231A
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000003466 welding Methods 0.000 claims abstract description 18
- 230000007704 transition Effects 0.000 claims abstract description 15
- 238000005516 engineering process Methods 0.000 claims description 22
- 238000007789 sealing Methods 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 4
- 235000019994 cava Nutrition 0.000 claims description 2
- 238000004146 energy storage Methods 0.000 abstract description 30
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000002203 pretreatment Methods 0.000 abstract 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000004534 cecum Anatomy 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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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 invention discloses an assembly process for an electrode lead-out structure. According to the assembly process for an electrode lead-out structure, firstly, the mode of transition inserting and welding is adopted, a locating projection is inserted in a locating hole by being pressed or knocked in generally, without the need of cooling pre-treatment or heating pre-treatment on an end cover and a flow-collecting plate, thus saving assembly time, increasing production efficiency, and reducing cost; secondly, the electrode lead-out structure inserted in a transition manner is adopted, if the performance of an energy storage device is much influenced by the defects of the end cover or the flow-collecting plate, the end cover or the flow-collecting plate can be detached and replaced to achieve standard requirements; thirdly, via welding, the conducting contact area between the flow-collecting plate and the end cover can be enlarged, and contact resistance can be reduced, thus being beneficial to reduction of the internal resistance of the energy storage device; and additionally, a welding effect is not influenced basically by a high-temperature environment or a low-temperature environment, thus improving the reliability and stability of the electrode lead-out structure, and prolonging the service life of the energy storage device.
Description
Technical field
The present invention relates to electrode deriving structure technical field, relate in particular to the electrode deriving structure assembly technology of a kind of battery or super capacitor.
Background technology
Battery or ultracapacitor are widely used in the fields such as industry, the energy, military affairs as energy storage device.Its electrode deriving structure mainly plays the effect that connects inner core body and outside end cap.Which kind of electrode deriving structure is key link as producing adopt not only the resistance of energy storage device is had material impact, and is also most important to reliability and the life-span of monomer.
at present, electrode deriving structure commonly used as shown in Figure 1, comprise collector plate 02 and the end cap 03 of buckle closure on collector plate 02 that the inside battery core with battery or super capacitor electrically contacts, convex with the connection projection 02-1 of column on the side plate face of collector plate 02, corresponding offers on an end end face of end cap 03 and the described connection blind hole 03-1 that is connected projection 02-1 interference fit, and convex with post terminal guiding 03-2 on the other end end face of end cap 03, end cap 03 conducts electricity and is connected by the projection 02-1 interference inserting that is connected that connects blind hole 03-1 and collector plate 02, and by post terminal guiding 03-2, the electric power of battery or super capacitor is drawn, thereby realize being fixedly connected with between end cap 03 and collector plate 02, although the kind electrode deriving structure connects reliable, compact conformation, but generally can only utilize the principle of expanding with heat and contracting with cold of metal, assemble by hot charging or cold charge mode.In use, if meet high temperature or low temperature, may occur to connect between end cap and collector plate and become flexible, cause the sudden change of energy storage device performance, even lose efficacy, make the performance of energy storage device have many uncertainties; Secondly, the kind electrode deriving structure adopts interference fit, need to accurately control the precision of coupling part, has increased difficulty of processing; In addition, before assembling, need are to end cap and collector plate is lowered the temperature or the intensification preliminary treatment, affected the production efficiency of energy storage device, increased assembly cost.
Summary of the invention
The purpose of this invention is to provide that a kind of technique is simple, the shorter electrode deriving structure assembly technology of operation.
In order to realize above purpose, the technical scheme of electrode deriving structure assembly technology of the present invention is as follows:
A kind of electrode deriving structure assembly technology, comprise the following steps: step 1, the locator protrusions that arranges on one of them of end cap and collector plate is pressed into or knocks in the location hole of another setting, so that location hole is in the same place with locator protrusions transition inserting, and be provided with the joint portion in location hole and locator protrusions periphery in end cap and collector plate end face binding site place; Step 2 is welded on described joint portion, so that the welding of end cap and collector plate is fixed into the electrode deriving structure that is in the battery core end.
The periphery of described electrode deriving structure is provided with the groove that caves inward, and after described step 2, sheathed insulated enclosure cover on the periphery of electrode deriving structure, the upper end of described insulated enclosure cover have to be set up at end cap dorsad on the periphery that the location turns edge, the lower end is set in battery core on the end face of collector plate; Sheathed housing on the periphery of insulated enclosure cover again; Then on described housing outer peripheral face in the inside extruding in the position of described groove or roll extrusion, put at insulated enclosure with the distortion fold that produces on by housing and squeeze out the location fold that embeds in described groove, and on housing in end cap dorsad an end of collector plate process the sealing of inwardly turning over and turn edge, described sealing turns edge described location is turned edge and is pressed on the end face of end cap.
Described location hole is opened in extending of end cap on the end face of collector plate and to the direction away from collector plate, described locator protrusions be convexly equipped with collector plate on the end face of end cap, the part of the opposing end surface of described end cap and collector plate beyond location hole and locator protrusions is bonded to each other, and described joint portion is in the position at close edge on end cap and collector plate opposing end surface.
Described end cap comprises that end cap disk body, end cap disk body are in the inner end cap projection and the outer end cap projection that are convexly equipped with on an end end face of collector plate, described inner end cap projection is sleeve-shaped, and described location hole is that the opening that surrounds of the end face by inner end cap projection and end cap is towards the blind hole of collector plate; The outer end cap projection is in the periphery of inner end cap projection, and described location division is in the end face of outer end cap projection and the end face binding site place of collector plate.
Described inner end cap projection is in the center position of end cap disk body end face, and inside and outside endcap bosses and end cap disk body end face part between the two surround the groove of annular.
Described end cap comprises that end cap disk body and end cap disk body are in the endcap bosses that is convexly equipped with on the end face of collector plate, endcap bosses is sleeve-shaped, described location hole is the blind hole that has the end face of the inwall of endcap bosses and end cap disk body to surround, and described joint portion is in the end face of endcap bosses and the end face binding site place of collector plate.
Described collector plate comprises the collector plate projection of extending towards end cap that is convexly equipped with on plate body and plate body edge, the collector plate projection is sleeve-shaped, described location hole is the blind hole that is surrounded by collector plate projection and plate body, described locator protrusions is in end cap and has the gear edge that is surrounded on described locator protrusions periphery on the end face of plate body and on end cap, and described location division is in the opposing end surface position of gear edge and collector plate projection.
Has the gap between described endcap bosses and plate face.
Described locator protrusions is entity or the canular body of column.
In the present invention, the electrode deriving structure has adopted the transition inserting to add the mode of welding, locator protrusions insert in location hole general adopt to be pressed into or to knock in get final product, do not need preliminary treatment that end cap and collector plate are lowered the temperature or heated up, saved installation time, improve production efficiency, reduced cost; Secondly, adopt the electrode deriving structure of transition inserting, if wherein the defective of end cap or collector plate has considerable influence to the energy storage device performance, also can change to reach standard-required to it; Moreover welding can increase the conductive contact area of collector plate and end cap, reduces contact resistance, thereby is conducive to reduce the internal resistance of energy storage device; In addition, high temperature or low temperature environment on welding effect substantially without impact, thereby increased the reliability and stability of electrode deriving structure, be conducive to extend the useful life of energy storage device.
Description of drawings
Fig. 1 is the structural representation of electrode deriving structure in prior art;
Fig. 2 is the structural representation of energy storage device embodiment 1 of the present invention;
Fig. 3 is the structural representation of electrode deriving structure in Fig. 2;
Fig. 4 is the structural representation of electrode deriving structure in energy storage device embodiment 2 of the present invention;
Fig. 5 is the structural representation of electrode deriving structure in energy storage device embodiment 3 of the present invention;
Fig. 6 is the structural representation of electrode deriving structure in energy storage device embodiment 4 of the present invention.
Embodiment
The embodiment of electrode deriving structure assembly technology of the present invention: the assembly technology of electrode deriving structure is comprised of following steps: step 1, the locator protrusions that arranges on one of them of end cap and collector plate is pressed into or knocks in the location hole of another setting, so that location hole is in the same place with locator protrusions transition inserting, and be provided with the joint portion in location hole and locator protrusions periphery in end cap and collector plate end face binding site place;
Can obtain following energy storage device by above assembly technology, the embodiment 1 of energy storage device: as shown in Figures 2 and 3, this energy storage device comprises battery core 3, lower header plate 4, housing 5, the insulated enclosure cover 6 of end cap 1, upper collector plate 2, column, has the electrode deriving structure that is made of end cap 1 and upper collector plate 2 and the insulation and sealing structure that is made of electrode deriving structure, insulated enclosure cover 6 and housing 5 in the upper end of energy storage device.wherein, end cap 1 comprises discoid end cap disk body 1-1, the inner end cap projection 1-2 that is convexly equipped with in center position on end cap disk body 1-1 lower surface, the outer end cap projection 1-3 that is convexly equipped with in the position, edge on the lower surface of end cap disk body 1-1, in, outer end cap projection 1-3 is all the sleeve-shaped with the coaxial distribution of end cap disk body 1-1, and the location hole of besieged city, the lower surface of inner end cap projection 1-2 and end cap disk body 1-1 center position blind hole shape, the outer peripheral face of inner end cap projection 1-2, the lower surface of the inner peripheral surface of outer end cap projection 1-3 and end cap disk body 1-1 is in the pit of between the two part besieged city annular.Upper collector plate 2 comprises the tabular plate body 2-1 in garden, convexes with locator protrusions 2-2 in center position on plate body 2-1 upper surface, and this locator protrusions 2-2 is also the sleeve-shaped of hollow.Locator protrusions 2-2 transition inserting is in above-mentioned location hole, and the applying of the lower surface of outside fix projection 2-2 is pressed on the position, edge, upper surface of plate body 2-1, form the joint portion of end cap 1 and collector plate combination with the position, edge, upper surface of the lower surface of locator protrusions 2-2 outside and plate body 2-1, and by welding on this joint portion, being fixed together so that end cap 1 and collector plate are welded.
Offer the groove that extends along circumferentially on the outer peripheral face of end cap 1, and insulated enclosure cover 6 is set on the periphery of electrode deriving structure, to overlap 6 by insulated enclosure, electrode deriving structure and housing 5 are separated, the upper end of insulated enclosure cover 6 have set up the 6-1 that turns edge in the location of inwardly turning over of end cap 1 position, edge, upper surface, the lower end is set on the outer peripheral face of battery core 3 upper ends.the upper end open place of housing 5 is provided with the sealing of inwardly the turning over 5-1 that turns edge, the sealing 5-1 that turns edge is pressed on the position, edge, upper surface of end cap 1 with the location 6-1 that turns edge, and rolling and processing has the distortion fold 5-2 that is in above-mentioned groove location place on housing 5, distortion fold 5-2 is absorbed in to the inside of housing 5, and the corresponding part of insulated enclosure cover 6 is pressed in above-mentioned groove, go out to locate fold 6-2 with the corresponding position extrusion process at insulated enclosure cover 6, namely the location fold 6-2 on insulated enclosure cover 6 is pressed in above-mentioned groove by the distortion fold 5-2 on housing 5, 5-1 and distortion fold 5-2 position end cap 1 in the axial direction to turn edge by described sealing, guarantee end cap 1 assembling and the reliability of using.
Bottom position place at energy storage device, lower header plate 4 welding conductions are connected on the lower surface of battery core 3, and the lower end of housing 5 is the cecum housing 5 of parcel lower header plate 4 and battery core 3 rear surfaces, the lower end of housing 5 and lower header plate 4 conductive communication together, to form the positive and negative external electrode of energy storage device by end cap 1 and housing 5.
In the present invention, the electrode deriving structure has adopted the transition inserting to add the mode of welding, locator protrusions 2-2 insert in location hole general adopt to be pressed into or to knock in get final product, do not need preliminary treatment that end cap 1 and collector plate are lowered the temperature or heated up, saved installation time, improve production efficiency, reduced cost; Secondly, adopt the electrode deriving structure of transition inserting, if wherein the defective of end cap 1 or collector plate has considerable influence to the energy storage device performance, also can change to reach standard-required to it; Moreover welding can increase the conductive contact area of collector plate and end cap 1, reduces contact resistance, thereby is conducive to reduce the internal resistance of energy storage device; In addition, high temperature or low temperature environment on welding effect substantially without impact, thereby increased the reliability and stability of electrode deriving structure, be conducive to extend the useful life of energy storage device.
the embodiment 2 of energy storage device: as shown in Figure 4, the difference of the present embodiment and embodiment 1 is, end cap 21 is made of end cap 21 projections that are convexly equipped with on end cap disk body 21-1 and end cap disk body 21-1 lower surface, end cap 21 projections are sleeve-shaped, the lower surface of the inwall of end cap 21 projections and end cap disk body 21-1 in end cap 21 projections with the interior part location hole of having encircled a city, and the collector plate projection that is convexly equipped with on the plate body 22-1 upper surface of upper collector plate 22 is also sleeve-shaped, upper collector plate projection 22-2 transition is inserted in location hole, and the applying position, upper surface of the ring end face by end cap 21 projections and collector plate plate body 22-1 forms the joint portion of end cap 21 and upper collector plate 22, by the welding in this joint portion, end cap 21 and upper collector plate 22 are welded and are fixed together, the effect of pre-determined bit is played in the transition inserting meeting of going up simultaneously between collector plate projection 22-2 and endcap bosses 21-4 in end cap 21 and upper collector plate 22 connection procedures, guaranteed the reliable connection of end cap 21 and upper collector plate 22.
the embodiment 3 of energy storage device: as shown in Figure 5, the difference of the present embodiment and embodiment 1 is, upper collector plate 32 is made of the collector plate projection 32-2 that is convexly equipped with on plate body 32-1 and plate body 32-1 upper edge, collector plate projection 32-2 is sleeve-shaped, the inner peripheral surface of this collector plate projection 32-2 and the part of plate body 32-1 in the collector plate projection surround the location hole of blind hole shape, and the endcap bosses 31-4 that is convexly equipped with on the lower surface of end cap 31 by end cap disk body 31-1 and end cap disk body 31-1 consists of, endcap bosses 31-4 is solid column, endcap bosses 31-4 transition is inserted into described location hole upper end, have on the lower surface of end cap disk body 31-1 and be looped around endcap bosses 31-4 gear edge on every side, this gear is along the upper end of block in the collector plate projection, so that have the gap between the upper surface of the lower surface of endcap bosses 31-4 and collector plate plate body 32-1, has the gap between namely making at the bottom of the hole of the lower surface of endcap bosses 31-4 and location hole.Simultaneously, in ring end face and the joint portion of gear along block matching part formation end cap 31 and collector plate of collector plate projection 32-2, by the welding in this joint portion, end cap 31 and upper collector plate 32 being welded is fixed together.
the embodiment 4 of energy storage device: as shown in Figure 6, the difference of the present embodiment and embodiment 1 is, the lower surface of this end cap 1 offers the location hole of the blind hole shape that upwards is absorbed in end cap 41 in center position, and upper collector plate 42 is to be made of the locator protrusions 42-2 that plate body 42-1 and plate body 42-1 center position are convexly equipped with, wherein locator protrusions 42-2 is sleeve-shaped, and locator protrusions 42-2 transition is inserted in location hole, and form the joint portion of end cap 41 and upper collector plate 42 in the position, edge in the lower surface of end cap 41 and the upper surface of upper collector plate 42, by welding in the joint portion, end cap 41 and upper collector plate 42 are fixed together.
In the above-described embodiments, upper and lower collector plate and end cap are discoid, to adapt on the existing market most of energy storage devices as columned situation, in other embodiments, upper and lower collector plate and end cap can be also prism-shaped, to be applicable to the energy storage device of prism-shaped.
In the above-described embodiments, the assembly technology of energy-storage battery not only comprises the assembly technology of electrode deriving structure, but also has the assembly technology of electrode sealing construction, in other embodiments, do not considering electrode sealing construction, perhaps in the situation that electrode sealing construction adopts prior art, the assembly technology of described electrode deriving structure also can be made of following steps:
Claims (9)
1. electrode deriving structure assembly technology, it is characterized in that, comprise the following steps: step 1, the locator protrusions that arranges on one of them of end cap and collector plate is pressed into or knocks in the location hole of another setting, so that location hole is in the same place with locator protrusions transition inserting, and be provided with the joint portion in location hole and locator protrusions periphery in end cap and collector plate end face binding site place; Step 2 is welded on described joint portion, so that the welding of end cap and collector plate is fixed into the electrode deriving structure that is in the battery core end.
2. electrode deriving structure assembly technology according to claim 1, it is characterized in that, the periphery of described electrode deriving structure is provided with the groove that caves inward, and after described step 2, sheathed insulated enclosure cover on the periphery of electrode deriving structure, the upper end of described insulated enclosure cover have to be set up at end cap dorsad on the periphery that the location turns edge, the lower end is set in battery core on the end face of collector plate; Sheathed housing on the periphery of insulated enclosure cover again; Then on described housing outer peripheral face in the inside extruding in the position of described groove or roll extrusion, put at insulated enclosure with the distortion fold that produces on by housing and squeeze out the location fold that embeds in described groove, and on housing in end cap dorsad an end of collector plate process the sealing of inwardly turning over and turn edge, described sealing turns edge described location is turned edge and is pressed on the end face of end cap.
3. electrode deriving structure assembly technology according to claim 1, it is characterized in that, described location hole is opened in extending of end cap on the end face of collector plate and to the direction away from collector plate, described locator protrusions be convexly equipped with collector plate on the end face of end cap, the part of the opposing end surface of described end cap and collector plate beyond location hole and locator protrusions is bonded to each other, and described joint portion is in the position at close edge on end cap and collector plate opposing end surface.
4. electrode deriving structure assembly technology according to claim 1, it is characterized in that, described end cap comprises that end cap disk body, end cap disk body are in the inner end cap projection and the outer end cap projection that are convexly equipped with on an end end face of collector plate, described inner end cap projection is sleeve-shaped, and described location hole is that the opening that surrounds of the end face by inner end cap projection and end cap is towards the blind hole of collector plate; The outer end cap projection is in the periphery of inner end cap projection, and described location division is in the end face of outer end cap projection and the end face binding site place of collector plate.
5. electrode deriving structure assembly technology according to claim 4, is characterized in that, described inner end cap projection is in the center position of end cap disk body end face, and inside and outside endcap bosses and end cap disk body end face part between the two surround the groove of annular.
6. electrode deriving structure assembly technology according to claim 1, it is characterized in that, described end cap comprises that end cap disk body and end cap disk body are in the endcap bosses that is convexly equipped with on the end face of collector plate, endcap bosses is sleeve-shaped, described location hole is the blind hole that has the end face of the inwall of endcap bosses and end cap disk body to surround, and described joint portion is in the end face of endcap bosses and the end face binding site place of collector plate.
7. electrode deriving structure assembly technology according to claim 1, it is characterized in that, described collector plate comprises the collector plate projection of extending towards end cap that is convexly equipped with on plate body and plate body edge, the collector plate projection is sleeve-shaped, described location hole is the blind hole that is surrounded by collector plate projection and plate body, described locator protrusions is in end cap and has the gear edge that is surrounded on described locator protrusions periphery on the end face of plate body and on end cap, and described location division is in the opposing end surface position of gear edge and collector plate projection.
8. electrode deriving structure assembly technology according to claim 7, is characterized in that, has the gap between described endcap bosses and plate face.
9. the described electrode deriving structure of any one assembly technology according to claim 1 to 8, is characterized in that, described locator protrusions is entity or the canular body of column.
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| CN201310103026.4A CN103178231B (en) | 2013-03-28 | 2013-03-28 | Assembly process for electrode lead-out structure |
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| CN201310103026.4A CN103178231B (en) | 2013-03-28 | 2013-03-28 | Assembly process for electrode lead-out structure |
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| CN103178231B CN103178231B (en) | 2017-04-12 |
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| CN104200993A (en) * | 2014-08-29 | 2014-12-10 | 安徽普和电子有限公司 | Capacitor |
| CN104952635A (en) * | 2014-03-28 | 2015-09-30 | 库珀技术公司 | Electrochemical energy storage device with flexible metal contact current collector and methods of manufacture |
| CN105006369A (en) * | 2015-06-29 | 2015-10-28 | 深圳市智胜新电子技术有限公司 | Aluminum electrolytic capacitor |
| CN106784974A (en) * | 2016-12-31 | 2017-05-31 | 深圳市沃特玛电池有限公司 | Annular electrokinetic cell |
| CN107689301A (en) * | 2017-07-04 | 2018-02-13 | 佛山市英飞翎电子有限公司 | Aluminium electrolutic capacitor electric wire connecting junction |
| CN109904379A (en) * | 2019-03-13 | 2019-06-18 | 芜湖天弋能源科技有限公司 | A kind of power battery switching piece welding structure and its welding method |
| CN111727527A (en) * | 2018-09-13 | 2020-09-29 | 株式会社Lg化学 | Battery module, battery pack including the same, and vehicle including the battery pack |
| CN115051123A (en) * | 2022-08-11 | 2022-09-13 | 楚能新能源股份有限公司 | Full utmost point ear electricity core structure |
| CN115566332A (en) * | 2022-11-11 | 2023-01-03 | 深圳海润新能源科技有限公司 | End cover assembly, energy storage device and electric equipment |
| WO2023226190A1 (en) * | 2022-05-24 | 2023-11-30 | 微宏公司 | Battery assembly, battery, and electric vehicle |
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| CN109904379A (en) * | 2019-03-13 | 2019-06-18 | 芜湖天弋能源科技有限公司 | A kind of power battery switching piece welding structure and its welding method |
| CN109904379B (en) * | 2019-03-13 | 2022-02-01 | 芜湖天弋能源科技有限公司 | Power battery adapter plate welding structure and welding method thereof |
| WO2023226190A1 (en) * | 2022-05-24 | 2023-11-30 | 微宏公司 | Battery assembly, battery, and electric vehicle |
| WO2024016911A1 (en) * | 2022-07-21 | 2024-01-25 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, and electric device |
| CN115051123A (en) * | 2022-08-11 | 2022-09-13 | 楚能新能源股份有限公司 | Full utmost point ear electricity core structure |
| CN115566332A (en) * | 2022-11-11 | 2023-01-03 | 深圳海润新能源科技有限公司 | End cover assembly, energy storage device and electric equipment |
| US11894567B1 (en) | 2023-06-29 | 2024-02-06 | Shenzhen Hithium Energy Storage Control Technology Co. Ltd. | End cover assembly, energy storage device and electrical equipment |
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| CN103178231B (en) | 2017-04-12 |
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