CN213401334U - Battery top cap structure, battery and battery module - Google Patents
Battery top cap structure, battery and battery module Download PDFInfo
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- CN213401334U CN213401334U CN202022170367.1U CN202022170367U CN213401334U CN 213401334 U CN213401334 U CN 213401334U CN 202022170367 U CN202022170367 U CN 202022170367U CN 213401334 U CN213401334 U CN 213401334U
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- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
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- 239000011149 active material 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 utility model belongs to the technical field of battery production and manufacture, in particular to a battery top cover structure, a battery and a battery module, which comprises a top cover plate; the pole column is arranged on the top cover plate and is used for being electrically connected with the bus bar; the plastic part at least partially surrounds the pole and fixes the pole to the top cover plate; and one surface of the plastic part corresponding to the bus bar is provided with a convex part and/or a concave part which is used for being in concave-convex fit with the contact surface of the bus bar. The utility model discloses can improve the positioning accuracy with the busbar, help improving the welding effect, reduce the risk that the module took place to become invalid.
Description
Technical Field
The utility model belongs to the technical field of the battery production is made, concretely relates to battery top cap structure, battery and battery module.
Background
Nowadays, green, high-efficiency secondary batteries are vigorously developed in various countries. The lithium ion battery 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. The secondary battery has been widely used in the fields of consumer mobile phones, electric tools, medical electronics and the like due to its excellent performance, and simultaneously has also shown good application prospects in the fields of new energy automobiles, energy storage base stations and the like.
When a plurality of secondary batteries are connected into a module, the batteries need to be assembled in series or in parallel through a bus bar, and two ends of the bus bar are respectively welded to electrode terminals of different batteries to achieve series or parallel connection.
However, in the welding process, the positioning accuracy between the electrode terminal of the battery and the bus bar is not enough, so that the welding position deviation is easily caused, the welding strength is reduced, the connection effect is influenced, and the performance of the battery module is reduced or even the battery module is out of work.
SUMMERY OF THE UTILITY MODEL
One of the purposes of the utility model lies in: to prior art's not enough, provide a battery top cap structure, can improve with the positioning accuracy of busbar, help improving welding effect, reduce the risk that the module takes place to become invalid.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a battery top cap structure comprises a top cap sheet; the pole column is arranged on the top cover plate and is used for being electrically connected with the bus bar; the plastic part at least partially surrounds the pole and fixes the pole to the top cover plate; and one surface of the plastic part corresponding to the bus bar is provided with a convex part and/or a concave part which is used for being in concave-convex fit with the contact surface of the bus bar.
As an improvement of the battery top cover structure, the convex portion or the concave portion is located keeping away from the plastic part one side of the top cover plate.
As an improvement of a battery top cap structure, the plastic part is provided with the through-hole, the inner wall of through-hole is provided with the arch, the lateral wall of utmost point post is provided with first recess, protruding with the unsmooth cooperation of first recess, the lateral wall of through-hole is provided with the second recess, the top cap piece is provided with utmost point post mounting hole, the second recess is fixed in utmost point post mounting hole.
As an improvement of the battery top cover structure of the utility model, the height of the convex part is 0.5-4mm, and the depth of the concave part is 0.5-4 mm.
As an improvement of the battery top cover structure of the present invention, the number of the convex portions and the concave portions is greater than 2.
As an improvement of a battery top cap structure, the convex part is cylinder, oval cylinder, cone or square body, the shape of concave part is circular, bar or V-arrangement, utmost point post with the plastic part is square, circular or oval.
As an improvement of the battery top cover structure, the plastic part and the convex part are integrally formed by PP or PPs materials.
As an improvement of a battery top cap structure, still be provided with explosion-proof valve bleeder vent on the top cap piece and annotate at least one in the liquid hole, explosion-proof valve is installed to explosion-proof valve bleeder vent.
A second object of the present invention is to provide a battery, which comprises a housing having an opening; the battery cell is accommodated in the shell; in the above battery top cap structure, the top cover sheet covers the opening, and is used for sealing the battery core in the casing.
A third object of the present invention is to provide a battery module, which comprises a plurality of busbars, wherein the busbars are provided with convex portions and/or concave portions, and the busbars are concave-convex matched with plastic parts; a plurality of above-mentioned battery, adjacent the battery passes through the busbar electricity and connects.
The utility model has the advantages that the utility model comprises a top cover plate; the pole column is arranged on the top cover plate and is used for being electrically connected with the bus bar; the plastic part at least partially surrounds the pole and fixes the pole to the top cover plate; and one surface of the plastic part corresponding to the bus bar is provided with a convex part and/or a concave part which is used for being in concave-convex fit with the contact surface of the bus bar. When a plurality of secondary batteries are connected into a module, the batteries are required to be assembled in series or in parallel through a bus bar, two ends of the bus bar are respectively welded on electrode terminals of different batteries to achieve series or parallel connection, but in the welding process, the positioning precision between the electrode terminals of the batteries and the bus bar is not enough, welding position deviation is easily caused, the welding strength is reduced, the connection effect is influenced, and the performance of the battery cell module is reduced or even loses efficacy, therefore, a convex part is arranged on a plastic part and can be matched with the concave part on the bus bar in a concave-convex mode, before the polar column and the bus bar are welded, the positioning effect is achieved, the welding strength is improved, the problem caused by welding deviation is reduced, in addition, the fastening force of mutual joint of the plastic part and the bus bar is increased, the polar column is stably connected with the bus bar, the contact area of the polar column and the bus bar is, on the other hand, other fixing parts are omitted, so that the height space occupied by the battery top cover structure in the battery module can be reduced, and the energy density of the battery module is improved; the pole and the top cover plate are separated by the plastic part and are not in direct contact with each other, and the pole and the busbar can be made of metal materials so as to ensure enough connection strength; welded connection between utmost point post and the busbar to realize series connection or parallel connection between the battery, the plastic part surrounds utmost point post partially at least, has increased the frictional force between plastic part and the utmost point post, makes the difficult relative top cap piece of utmost point post take place to rotate or the displacement. The utility model discloses can improve the positioning accuracy with the busbar, help improving the welding effect, reduce the risk that the module took place to become invalid.
Drawings
Features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a schematic view of a cross-sectional structure of the post according to the first embodiment of the present invention after being mounted.
Fig. 3 is an exploded schematic view of a section of the post according to the first embodiment of the present invention after being mounted.
Fig. 4 is a schematic structural diagram of a fourth embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a seventh embodiment of the present invention.
Fig. 6 is a schematic structural view of a bus bar according to a seventh embodiment of the present invention.
Wherein the reference numerals are as follows:
1-top cover sheet; 11-pole mounting hole; 13-air holes of an explosion-proof valve; 14-liquid injection hole; 15-an explosion-proof valve;
2-pole column; 21-a first groove;
3-plastic parts; 31-a through hole; 311-bumps; 312 — a second groove;
4-a convex part;
5-a recess;
6-a busbar;
7-a battery;
8-a shell;
9-electric core.
Detailed Description
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.
Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, detachable connections, 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 invention can be understood according to specific situations by those skilled in the art.
The present invention will be described in further detail with reference to fig. 1 to 6, but the present invention is not limited thereto.
Implementation mode one
A battery top cover structure comprises a top cover plate 1; the pole column 2 is arranged on the top cover plate 1 and is used for being electrically connected with the bus bar 6; the plastic part 3 at least partially surrounds the pole 2 and fixes the pole 2 to the top cover plate 1; one surface of the plastic part 3 corresponding to the bus bar 6 is provided with a convex part 4 for concave-convex matching with the contact surface of the bus bar 6.
Because when a plurality of secondary batteries are connected into a module, the batteries need to be assembled in series or in parallel through the bus bars, and the two ends of the bus bars are respectively welded to the electrode terminals of different batteries to achieve series or parallel connection, but in the welding process, the positioning precision between the electrode terminals of the batteries and the bus bars is not enough, which easily causes welding position deviation, causes welding strength reduction, affects the connection effect, and causes the performance reduction and even failure of the battery module, therefore, as shown in fig. 1 to 3, the plastic part 3 is provided with the convex part 4 which can be matched with the concave part 5 on the bus bar 6 in a concave-convex way, plays a positioning role before the polar post 2 and the bus bar 6 are welded, improves the welding strength, reduces the problem caused by welding deviation, in addition, increases the fastening force of the mutual joint of the plastic part 3 and the bus bar 6, enables the polar post 2 to be stably connected with the bus bar 6, and increases the contact area of the polar, the overall overcurrent capacity of the pole 2 is improved, other fixing parts are omitted, the height space occupied by the battery top cover structure in the battery module can be reduced, and the energy density of the battery module is improved; wherein, utmost point post 2 and top cap piece 1 are separated by plastic part 3, and both do not take place direct contact, and utmost point post 2 and busbar 6 can be the metal material to guarantee to have sufficient joint strength, and is optional, welded connection between utmost point post 2 and the busbar 6, thereby realize series connection or parallel connection between the battery, and plastic part 3 surrounds utmost point post 2 at least partially, has increased the frictional force between plastic part 3 and the utmost point post 2, makes utmost point post 2 difficult relative top cap piece 1 take place to rotate or the displacement.
In the battery top cover structure according to the utility model discloses an in, convex part 4 is located one side of keeping away from top cap piece 1 of plastic part 3. After busbar 6 and plastic part 3 fix a position, busbar 6 can apply the pressure towards top cap piece 1 to utmost point post 2 and plastic part 3, in order to compress tightly utmost point post 2, guarantee and the stability of position between utmost point post 2, help preventing plastic part 3 towards the direction motion of keeping away from top cap piece 1, on the other hand, make busbar 6 and utmost point post 2 between the pressure increase, help increasing the area of contact between busbar 6 and the utmost point post 2, not only improve both welded effect, can also improve the overcurrent performance between utmost point post 2 and the busbar 6.
According to the utility model discloses an among the battery top cap structure, see that fig. 2 and fig. 3 are shown, plastic part 3 is provided with through-hole 31, and the inner wall of through-hole 31 is provided with protruding 311, and utmost point post 2's lateral wall is provided with first recess 21, protruding 311 and the unsmooth cooperation of first recess 21, and the lateral wall of through-hole 31 is provided with second recess 312, and top cap piece 1 is provided with utmost point post mounting hole 11, and second recess 312 is fixed in utmost point post mounting hole 11. Still be provided with first recess 21 around through-hole 31 on utmost point post 2, the arch 311 of plastic part 3 can hold in first recess 21, it is spacing to plastic part 3 through first recess 21, avoid plastic part 3 to take place to remove between utmost point post 2 and top cap piece 1, the second recess 312 and the cooperation of utmost point post mounting hole 11 of the lateral wall of through-hole 31, be equivalent to with plastic part 3 card at utmost point post mounting hole 11, play the effect of being fixed in top cap piece 1 with plastic part 3, be about to utmost point post 2 is fixed in top cap piece 1, under the prerequisite of guaranteeing the steadiness, simplify plastic part 3's structure, can reduce the whole thickness of top cap group structure, thereby improve the energy density of battery. The pole 2 comprises a column body and a bottom plate arranged at the bottom of the column body, and the first groove 21 is arranged around the side wall of the column body.
In order to prevent the electrolyte inside the housing 8 from leaking out of the pole mounting hole 11, the plastic part 3 extends between the bottom of the pole 2 and the top cover plate 1, and the sealing part surrounds the pole mounting hole 11, specifically, the plastic part 3 is annular and surrounds the whole pole 2, so that the installation sealing ring is omitted, the top cover structure is simplified, and the production cost is reduced.
In the battery top cover structure according to the present invention, the height of the convex portion 4 is 0.5-4mm, and the number of the convex portions 4 is greater than 2. The height of the convex part 4 is limited, the convex part 4 is prevented from being too large, the production cost of the plastic part 3 is increased, the probability that the convex part 4 inclines in use is increased, meanwhile, the height of the convex part 4 is prevented from being too small, the contact area between the convex part 4 of the plastic part 3 and the concave part 5 of the bus bar 6 is reduced, the stability between the plastic part 3 and the bus bar 6 is not favorably improved, the number of the convex parts 4 is not limited to 2, the convex parts can be other numbers, the plurality of convex parts 4 can be arranged around the plastic part 3, the contact area between the convex parts 4 of the plastic part 3 and the concave parts 5 of the bus bar 6 is increased, and therefore the probability that the bus bar 6 displaces in welding is reduced. Further, the height of the convex portion 4 is preferably 2mm, the width of the convex portion 4 may be set to 1 to 10mm, and the width of the concave portion 5 of the bus bar 6 is slightly larger than the width of the convex portion 4, preferably 3 mm.
In the battery top cover structure according to the present invention, the convex portion 4 is a cylinder, an elliptical cylinder, a cone, or a square. According to actual battery structure and cost demand, the convex part 4 at 3 tops of plastic part can adopt the cylinder, the elliptic cylinder, cone or square body, it is corresponding, the concave part 5 of busbar 6 can adopt the round hole, the elliptical hole, bell mouth or square hole, be favorable to guaranteeing convex part 4 of plastic part 3 and the concave part 5 full contact laminating of busbar 6, avoid the convex part 4 at 3 tops of plastic part and the concave part 5 formation cavity of busbar 6, lead to area of contact to reduce, guarantee the steadiness that both connect.
According to the utility model discloses an among the battery top cap structure, utmost point post 2 and plastic part 3 are square, circular or oval. According to actual product and manufacturing cost's demand, can be square, circular or oval with utmost point post 2 and plastic part 3 equal design, nevertheless the utility model discloses do not so limit for, utmost point post 2 and plastic part 3 also can be inequality, satisfy to utmost point post 2 insulating and sealed can.
According to the utility model discloses an among the battery top cap structure, plastic part 3 and convex part 4 are by PP or PPS material integrated into one piece structure. Plastic part 3 and convex part 4 can adopt integrative injection moulding's mode to be made by high temperature resistant insulating plastic material, and for example mounting 22 can adopt one or more materials in PP or the PPS material to make to plastic part 3 can also guarantee and the holding power between the top flap 1 when can closely laminating with utmost point post 2.
According to the utility model discloses an among the battery top cap structure, still be provided with explosion-proof valve bleeder vent 13 on the top cap piece 1 and annotate at least one in the liquid hole 14, explosion-proof valve 15 is installed to explosion-proof valve bleeder vent 13. The pouring hole 14 is formed in the top lid piece 1 in a predetermined size so that the electrolyte can be poured into the accommodating space of the case 8 through the pouring hole 14 after the top lid piece 1 is closed to the opening of the case 8 and is sealingly connected to the case 8. The explosion-proof valve 15 may be in the form of an explosion-proof sheet, the explosion-proof valve 15 being disposed at a substantially middle position of the top cover plate 1, and when the internal pressure of the battery is excessive due to gas generation caused by overcharge, overdischarge, or overheating of the battery, the explosion-proof sheet in the explosion-proof valve 15 may be broken, so that the gas formed inside the secondary battery may be discharged to the outside through the explosion-proof valve vent 13, whereby the secondary battery can be prevented from exploding.
The utility model discloses a theory of operation is:
set up convex part 4 at plastic part 3, can with the 5 unsmooth cooperations of concave part on the busbar 6, before utmost point post 2 and the 6 welding of busbar, play the effect of location, promote welding strength, reduce the problem that leads to because of the welding skew, in addition, still increase the fastening force that plastic part 3 and busbar 6 joined each other, make utmost point post 2 firm connection busbar 6, still make the area of contact increase of utmost point post 2 and busbar 6, help improving 2 holistic ability of overflowing of utmost point post, on the other hand, other fixed parts have been saved, can reduce the high space that battery top cap structure took in battery module, help improving the energy density of battery module.
Second embodiment
The difference from the first embodiment is that: the plastic part 3 of the present embodiment is provided with a concave portion 5 on one surface corresponding to the bus bar 6 for concave-convex matching with the contact surface of the bus bar 6, the concave portion 5 is located on one side of the plastic part 3 far away from the top cover plate 1, the depth of the concave portion 5 is 0.5-4mm, and the shape of the concave portion 5 is circular, strip-shaped or V-shaped. In the present embodiment, the plastic part 3 is provided with the concave portion 5, correspondingly, the bus bar 6 is provided with the convex portion 4, the concave portion 5 and the convex portion 4 are in concave-convex fit, before the pole 2 and the bus bar 6 are welded, the positioning effect is achieved, the welding strength is improved, the problem caused by welding offset is reduced, the depth of the concave portion 5 is limited, the depth of the concave portion 5 is prevented from being too large, the production cost of the plastic part 3 is increased, a cavity is formed between the concave portion 5 of the plastic part 3 and the convex portion 4 of the bus bar 6, the contact area is reduced, meanwhile, the contact area between the concave portion 5 of the plastic part 3 and the convex portion 4 of the bus bar 6 is prevented from being too small, the stability between the plastic part 3 and the bus bar 6 is not improved, the number of the concave portions 5 is not limited to 2, but may be other numbers, a plurality of concave portions 5 may be arranged around the plastic part 3 to increase the contact area between the concave portion 5 of the plastic, thereby reducing the probability of displacement of the bus bar 6 during welding; according to actual battery structure and cost demand, the concave part 5 at 3 tops of plastic part can adopt circular, bar or V-arrangement, is favorable to guaranteeing that the concave part 5 at 3 plastic parts and the convex part 4 of busbar 6 contact the laminating completely, avoids the concave part 5 at 3 tops of plastic parts and the convex part 4 of busbar 6 to form the cavity, guarantees the steadiness that both connect.
Other structures are the same as those of the first embodiment, and are not described herein again.
Third embodiment
The difference from the first embodiment is that: the plastic part 3 of the present embodiment is provided with a convex portion 4 and a concave portion 5 on a surface corresponding to the bus bar 6 for concave-convex engagement with the contact surface of the bus bar 6, and the number of the convex portion 4 and the concave portion 5 is greater than 2. In the embodiment, the plastic part 3 is provided with the convex part 4 and the concave part 5, correspondingly, the bus bar 6 is provided with the concave part 5 and the convex part 4, and the concave part 5 and the convex part 4 are in concave-convex fit, so that before the pole 2 and the bus bar 6 are welded, a positioning effect is achieved, the welding strength is improved, and the problem caused by welding offset is reduced; the number of the convex portions 4 and the concave portions 5 on the top of the plastic member 3 is not limited to 2, but may be other numbers, and a plurality of convex portions 4 and concave portions 5 may be disposed around the plastic member 3 to increase the contact area between the plastic member 3 and the bus bar 6, thereby reducing the probability of displacement of the bus bar 6 during welding.
Other structures are the same as those of the first embodiment, and are not described herein again.
Embodiment IV
A battery includes a case 8 provided with an opening; the battery cell 9 is accommodated in the shell 8; in the battery top cover structure according to the first embodiment, the top cover sheet 1 covers the opening to enclose the battery cell 9 in the casing 8.
It should be noted that: referring to fig. 4, the battery has two terminals for outputting electric energy to the outside, one is a positive terminal and the other is a negative terminal. The battery in this embodiment has two poles 2, namely a first pole and a second pole, which are all disposed on the top cover plate 1, wherein the first pole can be a positive pole or a negative pole, and correspondingly, the second pole is a negative pole or a positive pole. The battery cell 9 comprises a positive plate, a diaphragm and a negative plate, and can be sequentially stacked and wound, wherein the positive plate comprises a positive current collector and a positive active material coated on the surface of the positive current collector, and the negative plate comprises a negative current collector and a negative active material coated on the surface of the negative current collector. First utmost point ear is connected in the anodal mass flow body, and the second utmost point ear is connected in the negative pole mass flow body, and the edge of the anodal mass flow body can have the blank area that is not covered by anodal active material, and first utmost point ear can be directly formed through cutting the blank area. Similarly, the second tab can be directly cut through the blank area of the negative current collector, and in addition, the first tab and the second tab can also be fixed on the blank area of the positive plate and the negative plate respectively through welding. The first pole lug and the first pole post are connected in a laser welding mode, and the second pole lug and the second pole post are connected.
Fifth embodiment
A battery includes a case 8 provided with an opening; the battery cell 9 is accommodated in the shell 8; like the battery top cover structure of the second embodiment, the top cover sheet 1 covers the opening for enclosing the battery cell 9 in the case 8.
It should be noted that: the first pole is used as the anode, the bottom plate and the column body can be made of metal aluminum, and an integrally formed structure is adopted, so that the quality of the battery can be ensured not to be influenced, and the production cost of the first pole is reduced; the second pole column is used as a negative pole, the column body can be made of metal aluminum, the bottom plate is made of the same current collecting material of the pole piece of the battery cell electrically connected with the bottom plate, namely the same metal material corresponding to the negative pole piece, the composite pole column is adopted, the quality of the battery can be guaranteed not to be affected, and the production cost of the second pole column is reduced.
Sixth embodiment
A battery includes a case 8 provided with an opening; the battery cell 9 is accommodated in the shell 8; as in the battery top cover structure of the third embodiment, the top cover sheet 1 covers the opening for enclosing the battery cell 9 in the case 8.
Seventh embodiment
A battery module comprises a plurality of bus bars 6, which are provided with convex parts 4 and are in concave-convex fit with plastic parts 3; in a plurality of cells according to the fourth embodiment, adjacent cells 7 are electrically connected by bus bars 6.
It should be noted that: referring to fig. 5 to 6, the bus bar 6 is provided with the convex portion 4, correspondingly, the plastic part 3 is provided with the concave portion 5, and the concave portion 5 and the convex portion 4 are in concave-convex fit, so that before the pole 2 and the bus bar 6 are welded, the positioning effect is achieved, the welding strength is improved, and the problem caused by welding offset is reduced. Wherein, a plurality of battery 7 sets up side by side, and the busbar 6 bridge joint is at two utmost point post 2 of adjacent battery 7, but the polarity of two utmost point post 2 of apron connection realizes establishing ties or parallelly connected.
Embodiment eight
A battery module comprises a plurality of bus bars 6, a plurality of connecting rods and a plurality of connecting rods, wherein the bus bars are provided with concave parts 5 which are matched with plastic parts 3 in a concave-convex manner; in a plurality of cells according to the fifth embodiment, adjacent cells 7 are electrically connected by bus bars 6.
It should be noted that: busbar 6 sets up concave part 5, and is corresponding, and plastic part 3 sets up convex part 4, and concave part 5 and the 4 unsmooth cooperations of convex part play the effect of location before utmost point post 2 and busbar 6 welds, promote welding strength, reduce the problem because of welding the skew leads to. Wherein, a plurality of battery 7 sets up side by side, and busbar 6 bridge joint is in two utmost point posts 2 of adjacent battery 7, can change the polarity of two utmost point posts 2 of connecting, realizes establishing ties or parallelly connected.
Ninth embodiment
A battery module comprises a plurality of bus bars 6, a plurality of battery modules and a plurality of battery modules, wherein the bus bars are provided with convex parts 4 and concave parts 5 which are matched with plastic parts 3 in a concave-convex manner; in a plurality of cells according to the sixth embodiment, adjacent cells 7 are electrically connected by bus bars 6.
It should be noted that: busbar 6 sets up convex part 4 and concave part 5, and is corresponding, and plastic part 3 sets up concave part 5 and convex part 4, and concave part 5 and the 4 unsmooth cooperations of convex part play the effect of location before utmost point post 2 and busbar 6 welding, promote welding strength, reduce the problem because of welding the skew leads to. Wherein, a plurality of battery 7 sets up side by side, and busbar 6 bridge joint is in two utmost point posts 2 of adjacent 2 battery 7, can change the polarity of two utmost point posts 2 of connecting, realizes establishing ties or parallelly connected.
Variations and modifications to the above-described embodiments may become apparent to those skilled in the art from the disclosure and teachings of the above description. Therefore, the present invention is not limited to the above-mentioned embodiments, and any obvious modifications, replacements or variations made by those skilled in the art on the basis of the present invention belong to the protection scope of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. A battery top cap structure, comprising:
a top cover sheet (1);
the pole column (2) is arranged on the top cover plate (1) and is used for being electrically connected with a bus bar (6);
the plastic part (3) at least partially surrounds the pole post (2) and fixes the pole post (2) to the top cover plate (1);
one surface of the plastic part (3) corresponding to the bus bar (6) is provided with a convex part (4) and/or a concave part (5) which are used for being matched with the contact surface of the bus bar (6) in a concave-convex mode.
2. A battery top cover structure according to claim 1, wherein: the convex part (4) or the concave part (5) is positioned on one side of the plastic part (3) far away from the top cover plate (1).
3. A battery top cover structure according to claim 1, wherein: the plastic part (3) is provided with through-hole (31), the inner wall of through-hole (31) is provided with arch (311), the lateral wall of utmost point post (2) is provided with first recess (21), arch (311) with first recess (21) unsmooth cooperation, the lateral wall of through-hole (31) is provided with second recess (312), top cap piece (1) is provided with utmost point post mounting hole (11), second recess (312) are fixed in utmost point post mounting hole (11).
4. A battery top cover structure according to claim 1, wherein: the height of the convex part (4) is 0.5-4mm, and the depth of the concave part (5) is 0.5-4 mm.
5. A battery top cover structure according to claim 1, wherein: the number of the convex parts (4) and the concave parts (5) is more than 2.
6. A battery top cover structure according to claim 1, wherein: the convex part (4) is a cylinder, an elliptic cylinder, a cone or a square body, the concave part (5) is circular, strip-shaped or V-shaped, and the pole (2) and the plastic part (3) are square, circular or oval.
7. A battery top cover structure according to claim 1, wherein: the plastic part (3) and the convex part (4) are integrally formed by PP or PPS materials.
8. A battery top cover structure according to claim 1, wherein: the top cover plate (1) is further provided with at least one of an explosion-proof valve air hole (13) and a liquid injection hole (14), and the explosion-proof valve (15) is installed on the explosion-proof valve air hole (13).
9. A battery, comprising:
a housing (8) provided with an opening;
the battery cell (9) is accommodated in the shell (8);
the battery top cover structure of any of claims 1 to 8, the top cover sheet (1) covering the opening for enclosing the cell (9) within the housing (8).
10. A battery module, comprising:
the plurality of bus bars (6) are provided with convex parts (4) and/or concave parts (5) and are matched with the plastic parts (3) in a concave-convex mode;
a plurality of the cells of claim 9, adjacent said cells (7) being electrically connected by said busbars (6).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022170367.1U CN213401334U (en) | 2020-09-28 | 2020-09-28 | Battery top cap structure, battery and battery module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022170367.1U CN213401334U (en) | 2020-09-28 | 2020-09-28 | Battery top cap structure, battery and battery module |
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| CN213401334U true CN213401334U (en) | 2021-06-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114267911A (en) * | 2021-12-17 | 2022-04-01 | 厦门海辰新能源科技有限公司 | Top cap subassembly, battery and energy memory |
| CN114709567A (en) * | 2022-04-19 | 2022-07-05 | 江苏正力新能电池技术有限公司 | Battery module |
| CN116014319A (en) * | 2023-02-09 | 2023-04-25 | 深圳海润新能源科技有限公司 | Energy storage device and electric equipment |
-
2020
- 2020-09-28 CN CN202022170367.1U patent/CN213401334U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114267911A (en) * | 2021-12-17 | 2022-04-01 | 厦门海辰新能源科技有限公司 | Top cap subassembly, battery and energy memory |
| CN114709567A (en) * | 2022-04-19 | 2022-07-05 | 江苏正力新能电池技术有限公司 | Battery module |
| CN116014319A (en) * | 2023-02-09 | 2023-04-25 | 深圳海润新能源科技有限公司 | Energy storage device and electric equipment |
| CN116014319B (en) * | 2023-02-09 | 2023-06-06 | 深圳海润新能源科技有限公司 | Energy storage device and electric equipment |
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Effective date of registration: 20220126 Address after: 215500 No. 68, Xin'anjiang Road, Southeast street, Changshu, Suzhou, Jiangsu Patentee after: Jiangsu Zenergy Battery Technologies Co.,ltd Address before: 523000 Dalang Town, Dongguan, Guangdong province Xiangshan Pine Hill Village Xiangshan Industrial Park Jiayuan Road No. 9 Patentee before: DONGGUAN TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. Patentee before: JIANGSU TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. Patentee before: Jiangsu Tafel Power System Co.,Ltd. |