CN208014793U - Connecting elements and rechargeable battery - Google Patents
Connecting elements and rechargeable battery Download PDFInfo
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- CN208014793U CN208014793U CN201820067980.0U CN201820067980U CN208014793U CN 208014793 U CN208014793 U CN 208014793U CN 201820067980 U CN201820067980 U CN 201820067980U CN 208014793 U CN208014793 U CN 208014793U
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- guide plate
- connecting plate
- plate
- battery core
- connecting elements
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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
Abstract
The utility model discloses a kind of connecting elements and rechargeable batteries.The connecting elements includes guide plate (353) and the first connecting plate (351) being shaped on the guide plate (353), first connecting plate (351) relative to the guide plate (353) it is bent be arranged, it is characterized in that, the end of the bending part of first connecting plate (351) and the guide plate (353) is equipped with from edge recessed groove inwardly.Rechargeable battery includes battery core and connecting elements above-mentioned.The utility model can prevent the connecting elements of rechargeable battery from occurring the phenomenon that cracking ends in the process of bending, improve the quality of rechargeable battery.
Description
Technical field
The utility model is related to battery technology field, more particularly to a kind of connecting elements and rechargeable battery.
Background technology
With the development of science and technology, higher and higher to the requirement of rechargeable battery.By taking lithium ion battery as an example, with energy
The advantages that metric density height, power density height, recycling are often, storage time is long, in mobile phone, DV and hand
It carries and being widely used in the portable electronic devices such as computer, and in the electronic traffic work such as electric vehicle, electric bicycle
It has a wide range of applications in terms of the large and medium-sized electrical equipment such as tool and energy storage facility, becomes and solve energy crisis and environmental pollution
Etc. global problems important technical.Electric vehicle etc. needs to fill to providing energy for it using the equipment of rechargeable battery
More stringent requirements are proposed for the energy density and security performance of battery.
In the rectangular rechargeable battery of the prior art, the lug of battery core is connect with connecting elements.Connect with lug in connecting elements
The first connecting plate connect is generally parallel to battery core longitudinal direction.As market is increasingly required the battery of larger current, it is
Meet battery overcurrent temperature increase requirement, need the bonding area for having enough between the first connecting plate and lug, to need first
Connecting plate has enough sizes on battery core longitudinal direction, this will certainly occupy more spaces, leads to the space utilization of battery core
Rate is not high, and energy density is low.
In order to improve the space availability ratio of battery core, often the first connecting plate is bent, but in the first connection of bending
During plate, in fact it could happen that the phenomenon that end of bending part is broken influences the quality of rechargeable battery.
Utility model content
The purpose of this utility model is to provide a kind of connecting elements and rechargeable batteries, it is intended to prevent the connection of rechargeable battery
There is the phenomenon that cracking ends in the process of bending in component, improves the quality of rechargeable battery.
The utility model first aspect provides a kind of connecting elements of rechargeable battery, the connecting elements include guide plate and
The first connecting plate being shaped on the guide plate, first connecting plate relative to the guide plate it is bent set
It sets, the end of the bending part of first connecting plate and the guide plate is equipped with from edge recessed groove inwardly.
In some embodiments, the end of first connecting plate and the bending part of the guide plate includes being respectively at
The first root and the second root of the opposite end of the bending part, the groove include positioned at first root and being arranged
In on first connecting plate and the guide plate the first groove and/or positioned at second root and be set to described first
The second groove on connecting plate and the guide plate.
In some embodiments, the groove is smoothly connected with first connecting plate and/or the guide plate.
In some embodiments, there is indentation between first connecting plate and the guide plate.
In some embodiments, the indentation be set to first connecting plate when being bent relative to the guide plate by
The side of pressure.
In some embodiments, the connecting elements includes opposite two for being connected to the guide plate width direction
Two first connecting plates of side, the connecting elements further include the second connecting plate being connect with the guide plate, and described
Two connecting plates are connected to the upper end of the guide plate, and the starting altitude on the top of described two first connecting plates is different.
In some embodiments, the connecting elements further includes the second connecting plate being connect with the guide plate, and described
Two connecting plates are connected to the upper end of the guide plate, and second connecting plate is formed with the guide plate one bending, described
The bending part of guide plate and second connecting plate is equipped at least one convex epirelief.
The utility model second aspect provides a kind of rechargeable battery, including in battery core and the utility model first aspect it is any
The connecting elements, first connecting plate are connect with the lug of the battery core.
In some embodiments, the guide plate extends in the width direction, and first connecting plate is along the width direction
Extend to the outside of the guide plate, the guide plate is at least partly relative to first connecting plate towards the electricity of the battery core
Core main body is protruded to form protrusion, and the protrusion is against the battery core.
In some embodiments, the lug extends from the side of the width direction.
In some embodiments, the rechargeable battery further includes being fixedly connected with first connecting plate and the lug
Gasket, the lug are located between first connecting plate and the gasket.
Based on connecting elements provided by the utility model and rechargeable battery, wherein the first connecting plate of connecting elements and guiding
The end of the bending part of plate is equipped with from edge recessed groove inwardly, can prevent connecting elements from occurring in the process of bending
The phenomenon that cracking ends, improves the quality of rechargeable battery.
The rechargeable battery of the utility model includes aforementioned connecting elements, therefore is had the advantages that identical as connecting elements.
By referring to the drawings to the detailed description of the exemplary embodiment of the utility model, the utility model it is other
Feature and its advantage will become apparent.
Description of the drawings
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
The exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the improper of the utility model
It limits.In the accompanying drawings：
Fig. 1 is that the connecting elements of the rechargeable battery of one embodiment of the utility model is curved relative to guide plate in the first connecting plate
Dimensional structure diagram before folding.
Fig. 2 is the portions the B enlarged structure schematic diagram of Fig. 1.
Fig. 3 is the portions the C enlarged structure schematic diagram of Fig. 1.
Fig. 4 is stereochemical structure of the connecting elements of embodiment illustrated in fig. 1 after the first connecting plate is bent relative to guide plate
Schematic diagram.
Fig. 5 is the portions the D enlarged structure schematic diagram of Fig. 4.
Fig. 6 is the portions the E enlarged structure schematic diagram of Fig. 4.
Fig. 7 is that the rechargeable battery of one embodiment of the utility model eliminates the dimensional structure diagram after shell, wherein the
One connecting plate is connect with lug to be finished but not yet bends.
Fig. 8 is the partial enlargement structural representation of the upward view of the rechargeable battery of embodiment illustrated in fig. 7.
Fig. 9 is the structural schematic diagram of the battery core of the rechargeable battery of one embodiment of the utility model.
Figure 10 is the front view of battery core shown in Fig. 9.
Figure 11 is the upward view of battery core shown in Fig. 9.
Figure 12 be one embodiment of the utility model rechargeable battery connecting elements in the first connecting plate relative to guide plate
Structural schematic diagram before bending.
Figure 13 is the present invention looks up structural representation of Figure 12.
Figure 14 is the portions the F enlarged structure schematic diagram of Figure 13.
Figure 15 is that the connecting elements of rechargeable battery shown in Figure 12 is vertical after the first connecting plate is bent relative to guide plate
Body structural schematic diagram.
Figure 16 is the present invention looks up structural representation of Figure 15.
Figure 17 is the portions the G enlarged structure schematic diagram of Figure 16.
Figure 18 is that the rechargeable battery of one embodiment of the utility model eliminates the partial enlargement structure of the upward view after shell
Schematic diagram.
Figure 19 is the partial structural diagram of an alternate embodiment of connecting elements shown in Figure 12.
Figure 20 is the partial structural diagram of the another alternate embodiment of connecting elements shown in Figure 12.
Figure 21 is that the rechargeable battery of one embodiment of the utility model eliminates the dimensional structure diagram after shell.
Figure 22 is the partial enlargement structural representation of the upward view of the rechargeable battery of embodiment illustrated in fig. 21.
Figure 23 is that the rechargeable battery of one embodiment of the utility model eliminates the dimensional structure diagram after shell.
Figure 24 is the schematic cross-sectional view of the upward view of the rechargeable battery of embodiment illustrated in fig. 23.
Figure 25 is the portions the I enlarged structure schematic diagram of Figure 24.
Figure 26 is that the rechargeable battery of one embodiment of the utility model eliminates the dimensional structure diagram after shell.
Figure 27 is the partial enlargement structural representation of the upward view of the rechargeable battery of embodiment illustrated in fig. 26.
Figure 28 be one embodiment of the utility model rechargeable battery connecting elements in the first connecting plate relative to guide plate
Structural schematic diagram before bending.
Figure 29 is that structure of the connecting elements of embodiment illustrated in fig. 28 after the first connecting plate is bent relative to guide plate is shown
It is intended to.
Figure 30 is that the rechargeable battery of one embodiment of the utility model eliminates the dimensional structure diagram after shell.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.It is illustrative to the description only actually of at least one exemplary embodiment below, is never used as to this practicality
Novel and its application or any restrictions used.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
There is the every other embodiment obtained under the premise of making creative work, shall fall within the protection scope of the present invention.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
Up to the unlimited the scope of the utility model processed of formula and numerical value.Simultaneously, it should be appreciated that for ease of description, attached shown in the drawings each
The size of a part is not to be drawn according to actual proportionate relationship.For skill known to person of ordinary skill in the relevant
Art, method and apparatus may be not discussed in detail, but in the appropriate case, and technology, method and apparatus, which should be considered as authorizing, to be said
A part for bright book.In shown here and discussion all examples, any occurrence should be construed as merely illustrative,
Not as limitation.Therefore, the other examples of exemplary embodiment can have different values.It should be noted that：Similar mark
Number and letter similar terms are indicated in following attached drawing, therefore, once be defined in a certain Xiang Yi attached drawing, then subsequent
It need not be further discussed in attached drawing.
In the description of the present invention, it should be understood that limiting zero using the words such as " first ", " second "
Part, it is only for convenient for being distinguished to corresponding parts, there is no Stated otherwise such as, above-mentioned word there is no particular meaning,
Therefore it should not be understood as the limitation to scope of protection of the utility model.
In the description of the present invention, it should be understood that the noun of locality such as " front, rear, top, and bottom, left and right ", " laterally,
Vertically, vertically, it is horizontal " and " pushing up, bottom " etc. indicated by orientation or positional relationship be normally based on orientation or position shown in the drawings
Relationship is set, is merely for convenience of describing the present invention and simplifying the description, in the absence of explanation to the contrary, these nouns of locality
Do not indicate that and imply that signified device or element must have a particular orientation or with specific azimuth configuration and operation, because
This should not be understood as the limitation to scope of protection of the utility model；The noun of locality " inside and outside " refers to the wheel relative to each component itself
Wide is inside and outside.
In the description of the present application, " longitudinal direction " refers to the longitudinal direction and battery core 100 of rechargeable battery
Longitudinal direction corresponds to the X-direction in Fig. 7；" width direction " refers to the width direction of rechargeable battery, corresponds to figure
Y-direction in 7, " width direction " are also the width direction of connecting elements and its guide plate；" short transverse "
It refers to being transversely to the machine direction direction and the direction of width direction, corresponds to the Z-direction in Fig. 7, " short transverse " is to fill
The short transverse and connecting elements of battery and battery core and its short transverse of guide plate.
Fig. 1 to Figure 30 shows the rechargeable battery of various embodiments of the utility model and its structure of parts.
Each embodiment of the utility model provides a kind of connecting elements 35 of rechargeable battery.Connecting elements 35 includes guide plate
353 and the first connecting plate 351 for being shaped on guide plate 353.First connecting plate 351 is bent relative to guide plate 353
Ground is arranged.The end of first connecting plate 351 and the bending part of guide plate 353 is equipped with from edge recessed groove inwardly.
Due to the first connecting plate 351 of connecting elements 35 and the end of the bending part of guide plate 353 be equipped with from edge to
The recessed groove in inside, can prevent connecting elements from occurring the phenomenon that cracking ends in the process of bending, improve rechargeable battery
Quality.
The rechargeable battery of various embodiments of the utility model includes aforementioned connecting elements, therefore with identical with connecting elements
Advantage.
The rechargeable battery and connecting elements of various embodiments of the utility model are carried out below in conjunction with Fig. 1 to Figure 30 more detailed
Explanation.
Connecting elements 35 is used to make the battery core 100 of rechargeable battery to be electrically connected with formation outside rechargeable battery.Such as Fig. 1 to Fig. 6
It is shown, first connecting plate 351 of the connecting elements 35 including guide plate 353, the lateral edges for the width direction for being connected to guide plate 353
With connect with guide plate 353 and for the second connecting plate 352 with rechargeable battery external electrical connections.First connecting plate 351 is used for
It is connect with battery core.Second connecting plate 352 is used for and rechargeable battery external electrical connections.
The end of first connecting plate 351 and the bending part of guide plate 353 includes be respectively at bending part opposite two
First root and the second root at end, aforementioned grooves include positioned at the first root and being set to the first connecting plate 351 and guide plate
It the first groove 35B on 353 and/or positioned at the second root and is set on the first connecting plate 351 and guide plate 353 second recessed
Slot 35C.
As shown in Figures 1 to 6, in the connecting elements 35 of the present embodiment, two the first connecting plates 351 are respectively arranged at guiding
The both sides lateral edges of the width direction of plate 353.Wherein, the second groove 35B is located at the first root of bending part, i.e. Fig. 1 and Fig. 4
Top；Second groove 35C is located at second root opposite with the first root of bending part, i.e. bottom end in Fig. 1 and Fig. 4.
As shown in Figure 1 and Figure 4, bending part extends along the short transverse Z of connecting elements 35, and the first groove 35B is from the upper of bending part
Edge is downwardly concaved, and the lower edge of the second groove 35C from bending part is upwardly recessed.
The first groove 35B and the second groove 35C, which is arranged, can make connecting elements 35 be less prone in the process of bending
The phenomenon that end of bending part is destroyed, is effectively improved the cracking ends problem of connecting elements 35 in the process of bending.
In some preferred embodiments, groove is smoothly connected with the first connecting plate 351 and/or guide plate 353.
Additionally preferably, the section of groove is smoothed curve section or the multistage lines to be smoothly connected.For example, the first groove
35B or the second groove 35C can be the square groove that corner is connected by arc transition.
In other embodiments (not shown), groove may be set to be the shapes such as U-lag, arc groove, and arc groove is cut
Face shape for example can be semi arch or major arc.
Arrangement above can make the end of crooked place and/or the end of crooked place not have stress concentration point nearby, have
Conducive to preventing Local Cracking due to the first connecting plate 351 is bent of connecting elements 35.
As shown in Figure 7 and Figure 8, in the rechargeable battery of some embodiments of the utility model, rechargeable battery includes mainly shell
Body, head cover 30, battery core 100 and connecting elements 35.Its middle casing is not shown；The longitudinal direction of battery core 100 and longitudinal direction X mono-
It causes, the thickness direction of battery core 100 is consistent with width direction Y；The short transverse of battery core 100 is consistent with short transverse Z.
There are explosion-proof valve 32, liquid injection hole 33, anode electrode component 31 and negative electrode component 34 on head cover 30.W is represented in Fig. 7
The welding position of first connecting plate 351 and lug 120.
Shell and head cover 30 form installation space, battery core 100, connecting elements 35 guide plate 353 and the first connecting plate
351 parts for being located at 30 lower section of head cover are located in installation space.The second connecting plate 352 and the electricity on head cover 30 of connecting elements 35
Pole component connection.In Fig. 7, connecting hole is provided on the second connecting plate 352, the second connecting plate 352 passes through the connecting hole and electrode
Component connects.
As shown in fig. 7, the electrod assembly on head cover 30 includes the anode electrode portion being electrically connected for the anode with battery core 100
Part 31 and negative electrode component 34 for being electrically connected with the cathode of battery core 100.Explosion-proof valve 32 is additionally provided on head cover 30.In head cover
The other structures such as filling liquid hole 33 can also be set on 30.
The connecting elements 35 of rechargeable battery usually can first with head cover 30 and thereon electrod assembly be fixedly connected, then with electricity
Core 100 connects.When connecting elements 35 is connect with battery core 100, after guide plate 353 is relative to 110 location determination of battery core main body,
First connecting plate 351 is fixedly connected in the state of angled with the end face of battery core main body 110 with lug 120, Zhi Hou
One connecting plate 351 is bent to the first connecting plate 351 in rigging position, such as the present embodiment and is bent to the end with battery core main body 110
Face is parallel.After connecting elements 35 is completed with battery core 100, connecting elements 35 and battery core 100 are packed into shell together.It installs
After connecting elements 35 and battery core 100, head cover 30 covers the open-mouth in shell just, is tightly connected head cover 30 and shell again later.
As shown in Figures 9 to 11, battery core 100 includes battery core main body 110 and the lug extended from battery core main body 110
120。
Battery core 100 is to wind the square electric cell of formation after stacked by positive plate, isolation film, negative plate.Positive plate, isolation film
The longitudinal direction of battery core 100 is formed with the width direction of negative plate.
Positive plate and negative plate are respectively including substrate and coated on the active material on substrate.Active matter is coated on substrate
The region of matter forms coating zone.Isolation film is for being isolated positive plate and negative plate to prevent rechargeable battery internal short-circuit.Positive plate
Substrate can be the first metal foil, for example, aluminium foil；The substrate of negative plate can be the second metal foil, for example, copper foil.
Lug 120 includes positive pole ear and negative lug.Positive pole ear by the first metal foil the uncoated work of one side edge
The part of property substance is formed.Negative lug is formed by the part of the uncoated active material in the second metal foil one side edge.This
In embodiment, positive pole ear and negative lug are located at the both ends of the longitudinal direction of battery core 100, and protrude from the respective end of isolation film
Portion.
As shown in Figures 9 to 11, in the battery core 100 of the present embodiment, lug 120 is from the thickness direction of battery core main body 110
Extend side.As shown in fig. 7, lug 120 extends in the rear side of the thickness direction of battery core main body 110 from battery core main body 110,
And the front side on 110 thickness direction of battery core main body does not extend lug, so as to form the vacancy 122 of thickness direction.This sets
It sets so that the ruler that the first connecting plate 351 is occupied relative to lug 120 after the bending of guide plate 353 on the longitudinal direction of battery core 100
Very little to be thinned, so that the first connecting plate 351 can be closer to battery core main body 110, connecting elements 35 and battery core 100 exist
Overall dimensions on longitudinal direction reduce, to improve the energy density of rechargeable battery.
In the present embodiment, position consistency that positive pole ear and negative lug are distributed in thickness direction.
As shown in figure 11, in a preferred embodiment, lug 120 concentrated setting is in the thickness direction of battery core main body 110
Side.In the present embodiment, lug 120 is set to the side of the split of the thickness direction of battery core main body 110.
As shown in Figure 9 and Figure 10, lug 120 is located at the middle part of the short transverse of battery core main body 110.As shown in Figure 10, exist
In the short transverse of battery core 100, lug 120 respectively forms a vacancy 121 up and down.The setting makes lug 120 be easier to bend, from
And make lug 120 between the first connecting plate 351 and battery core main body 110.
Connecting elements 35 is located at the longitudinal direction end of battery core 100.In the present embodiment, the longitudinal direction both ends of battery core 100
A connecting elements 35 is respectively set.One of connecting elements 35 is connect with the positive pole ear of battery core 100, another connection
Component is connect with the negative lug of battery core 100.On the connecting elements 35 and head cover 30 being connect with the positive pole ear of battery core 100 just
Pole electrod assembly 31 connects, the connecting elements 35 being connect with the negative lug of battery core 100 and the negative electrode component on head cover 30
32 connections, to lug 120 be made to be realized with corresponding electrod assembly by connecting elements 35 and be electrically connected.
In the present embodiment, the connecting elements 35 at 100 both ends of battery core is identical as the corresponding connection type of lug 120 of one end,
Therefore, in the following description, only with positioned at the connecting elements 35 of one end longitudinal direction X of battery core 100 and connecting elements 35 with
It is illustrated for the connection relation of battery core 100.
As shown in Figures 1 to 8, connecting elements 100 includes two of the both sides for the width direction for being connected to guide plate 353 the
One connecting plate 351.Second connecting plate 352 is located at the top of battery core 100, is bent relative to guide plate 353 in the first connecting plate 351
Before, the second connecting plate 352 is opposite with the extending direction of the first connecting plate 351.After rechargeable battery set fills, the second connection
Plate 352 is bent to relative to guide plate 353 towards 100 side of battery core parallel with the end face of battery core main body 100.In the present embodiment,
Second connecting plate 352 is electrically connected with electrod assembly.In embodiment (not shown), the second connecting plate can also be used as rechargeable battery
Electrod assembly, without electrod assembly is specially arranged.
It, will be positioned at the width side of guide plate 353 after the bending of the first connecting plate 351 in the present embodiment as shown in Fig. 7 to Fig. 8
To inside and be parallel to the end face of battery core main body 110, i.e., perpendicular to the longitudinal direction X of battery core 100.
In the present embodiment, connecting elements 35 is integrally formed by sheet material.When connecting elements 35 and battery core assemble, guide plate
After 353 relative to 100 location determination of battery core, the first connecting plate 351 in the state of being parallel to the longitudinal direction X of battery core 100 with
Lug 120 is fixedly connected, and bends the first connecting plate 351 to the inside of guide plate 353 later, completes connecting elements 35 and battery core
100 assembling.
In some embodiments (not shown), after location determination of the guide plate 353 relative to battery core 100, the first connecting plate
351 can also be fixedly connected in the state of deviateing the longitudinal direction X certain angles of battery core 100 with lug 120, later to guiding
The inside of plate 353 bends the first connecting plate 351, completes the assembling of connecting elements 35 and battery core 100.
The first connecting plate 351 and the lug 120 of battery core 100 of connecting elements 35 can pass through ultrasonic bonding or laser
Welding or resistance welding realize electrical connection, while realizing being fixedly connected for some strength.By by connecting elements after being welded to connect
35 the first connecting plate 351 bends to reduce connecting elements 35 and battery core 100 in the inside that longitudinal direction X is occupied sky inwardly
Between, it is conducive to improve energy density.
In the present embodiment, the lug 120 of each battery core 100 is located remotely from the one of another battery core 100 in two battery cores 100
Side.In embodiment (not shown), the lug 120 of each battery core 100 can also be located at close to another electricity in two battery cores 100
The side of core 100.
First connecting plate 351 is bent inwardly relative to guide plate 353, effectively reduces connecting elements 35 in longitudinal direction
The occupied space in the ends X, and the side of the Y in the width direction of lug 120 is extended, and the thickness of lug 120 is effectively reduced,
It can be further reduced connecting elements 35 and 120 junction the space occupied of lug, to effectively improve the space of rechargeable battery
The energy density of utilization rate and rechargeable battery.In addition, the integral thickness due to lug 120 is thinned, lug 120 and connecting elements 35
Between the distance of X along the longitudinal direction smaller can be set to obtain, the activity space of the X along the longitudinal direction of lug 120 effectively reduces, and charges
When battery is vibrated or impacts, lug 120 is hardly damaged, and lug 120 is inserted into the possibility of battery core main body 110 after being squeezed
Property reduce, to reduce the risk of resulting rechargeable battery internal short-circuit, improve service life and the safety of battery core 100
Energy.
In addition, in the present embodiment, as shown in Figure 7 and Figure 8, rechargeable battery further includes and the first connecting plate 351 and lug 120
The gasket 310 being fixedly connected, lug 120 are located between the first connecting plate 351 and gasket 310.
Gasket 310, which is arranged, can be such that rechargeable battery is reduced in the separate of connecting elements 35 after vibration and impact occurs
The direct impact of the lug 120 of 110 side of battery core main body, to which conducive to protection lug 120, that improves rechargeable battery uses the longevity
Life.
As shown in Figure 12 to Figure 20, in some embodiments preferably, the first connecting plate 351 and the guiding of connecting elements 35
There is indentation 35K between plate 353.
Indentation 35K is arranged to form weak link at indentation 35K between the first connecting plate 351 and guide plate 353,
Bending position is more acurrate when to the first connecting plate 351 relative to 353 bending of guide plate, after being conducive to the bending of connecting elements 35
Size is accurate, is also beneficial to the assembling that rechargeable battery smoothly completes battery core 100 and connecting elements 35 and shell.Moreover, indentation 35K
It is more effortless when making the first 351 bending of connecting plate, to reduce because bending is to the 120 issuable damage of battery core 100 and its lug.
In the present embodiment preferably, indentation 35K is set to when the first connecting plate 351 is bent relative to guide plate 353 and is pressurized
Side.The setting makes the possibility being damaged at indentation when the first 351 bending of connecting plate reduce.
In order to realize the bulk for effectively bending and efficiently controlling after connecting elements 1 is bent of connecting elements 1, preferably
Ground, the distance of mainboard bodies of the indentation 35K away from guide plate 353 are 1~2 times of the thickness of main plate body.
Figure 18 shows that connection of the connecting elements 35 with indentation 35K with the equal components of battery core 100 in rechargeable battery is closed
System.Wherein, the lug 120 of two battery cores 100 is each located on the side far from another battery core 100.Lug 120 is fixed on first
Between connecting plate 351 and gasket 310.Two the first connecting plates 351 of connecting elements 35 are bent to the inside of guide plate 353.
In addition, the cross-sectional shape of indentation 35K can be a variety of, for example, the cross-sectional shape of indentation 35K can be as schemed
Arc shown in 17 or triangle that is as shown in figure 19 trapezoidal or showing such as Figure 20.
In embodiment shown in Figure 21 to Figure 22, connecting elements 35 on the basis of equipped with groove, the first connecting plate 351
Thickness can be arranged to be thinner than the thickness of guide plate 353, and be provided with indentation 35K simultaneously.Wherein, the lug of two battery cores 100
120 are each located on the side far from another battery core 100.Lug 120 is fixed on the first connecting plate 351, in lug 120
Gasket is not arranged for the side opposite with the first connecting plate 351.Two the first connecting plates 351 of connecting elements 35 will be to guide plate
353 inside bending.
Compared with guide plate and the identical connecting elements of the first connection plate thickness, the thickness of the first connecting plate 351, which is less than, leads
The thickness of corbel back slab 353 can make the rechargeable battery space that connecting elements 35 occupies after bending further decrease, so as to
Further promote the energy density of rechargeable battery.Simultaneously as 351 thickness of the first connecting plate reduces, first can be effectively improved
The assemble welding quality of connecting plate 351 and the lug 120 of rechargeable battery.And the thickness of guide plate 353 still keeps relatively large, then
The resistance that guide plate 353 can be reduced makes the internal resistance of rechargeable battery meet demand, ensures rechargeable battery in big multiplying power current charge-discharge
It will not drastically generate heat when electric.In addition, the thickness of the first connecting plate 353 is smaller relative to the thickness of guide plate 353, it is additionally favorable for first
Connecting plate 353 is bent, to the relative position conducive to connecting elements 35 and battery core 100 after guarantee bending, to conducive to assembling, go back
Conducive to the damage reduced in bending process to battery core body 110 or lug 120.
In some embodiments (not shown), the first connecting plate 351 can also be bent outward.Preferably, guide plate 353
Relative to the first connecting plate 351 protrusion is formed at least partly towards the protrusion of battery core main body 110.It is highly preferred that protrusion and electricity
Core 100 abuts.
As shown in Figure 23 to Figure 25, rechargeable battery includes shell, head cover 30, battery core 100 and connecting elements 35.Head cover 30
On be provided with for the anode electrode component 31 that is electrically connected of anode of battery core 100 and for being electrically connected with the cathode of battery core 100
Negative electrode component 34 and explosion-proof valve 32.
In the embodiment, lug 120 extends from the side of the thickness direction (i.e. width direction Y) of battery core main body 110.
First connecting plate 351 of connecting elements 35 is connected to the side of the width direction of guide plate 353.First connecting plate 351 and lug
120 connections, and extend along the outside of width direction Y-direction guide plate 353.The end face of first connecting plate 351 and battery core main body 110
It is parallel, i.e. longitudinal direction X of the first connecting plate 351 perpendicular to battery core 100.Guide plate 353 is at least partly relative to the first connection
Plate 351 protrudes to form protrusion towards 110 side of battery core main body, and protrusion is resisted against in battery core 100.
Since guide plate 353 at least partly protrudes to form protrusion relative to the first connecting plate 351 towards 100 side of battery core
Portion, protrusion are resisted against in battery core 100, and when vibration or impact occur for rechargeable battery, the first connecting plate 351 is towards battery core 100
The protrusion of side can contact with battery core 100 and connecting elements 35 is made to undertake stress, so as to which lug 120 is effectively relieved
The lug drawing crack phenomenon caused by vibrating or impacting, while the activity space of lug 120 reduces, and battery core master is inserted into after being squeezed
The possibility of body 110 reduces, to reduce the risk of resulting internal short-circuit of battery.Due to the possibility of 120 drawing crack of lug
Property and lug be inserted into the possibility of battery core main body 110 and reduce, the service life and security performance of battery core 100 can be improved.
As shown in figures 24 and 25, guide plate 353 is at least partly bonded with battery core main body 110.The setting can make lug
120 are damaged and are inserted into the possibility smaller of battery core main body 110 when rechargeable battery is vibrated or impact, to further carry
The service life and security performance of high battery core 100.
As shown in figure 25, guide plate 353 includes mainboard body 3531 and turn-up portion 3532, and turn-up portion 3532 is located at mainboard body
The lateral edges of 3531 width direction and the direction extension for being directed away from battery core 100, the first connecting plate 351 pass through turn-up portion
3532 connect with guide plate 353.
In embodiment shown in Figure 23 to Figure 25, mainboard body 3531 is tablet.Turn-up portion 3532 is hung down with mainboard body 3531
Directly.In other embodiments (not shown), turn-up portion 3532 can also be tilted to the inside of mainboard body 3531 or turn-up portion
3532 tilt to the outside of mainboard body 3531.
In the present embodiment, the first connecting plate 351 is parallel to mainboard body 3531.First connecting plate 351 and mainboard body at this time
3531 are each perpendicular to longitudinal direction X.
In embodiment (not shown), the first connecting plate 351 and mainboard body 3531 can also shape have a certain degree, example
Such as, the first connecting plate 351 the outer end of width direction Y can than in the inner end of width direction Y closer to battery core main body 110.
In embodiment as shown in Figure 23 to Figure 25, the lug 120 of each battery core 100 can be located in two battery cores 100
Side far from another battery core 100.
In some preferred embodiments, guide plate 353 is at least partly bonded with battery core 100, in the present embodiment, guide plate
353 entirety are bonded with the side of battery core main body 110.The setting can make lug 120 rechargeable battery it is vibrated or impact when
It is damaged and is inserted into the possibility smaller of battery core main body 110, to further increase service life and the safety of battery core 100
Energy.
In the present embodiment, the mainboard body 3531 of connecting elements 35 is bonded with battery core main body 110, i.e., with 100 longitudinal direction side of battery core
It is bonded to the isolation film end face of the ends X.Wherein lug 120 hardly undertakes the longitudinal direction X of battery core 100 and fixes and position work(
Can, so as to more effectively protect lug 120 injury-free.The mainboard body 3531 of connecting elements 35, which is bonded battery core 100, is isolated
Battery core 100 is compressed behind film end face, is played the role of X supports along the longitudinal direction and is fixed and positioned battery core 100, prevents rechargeable battery
It assembles rear battery core 100 and generates shaking inside housings.
As shown in FIG. 26 to 27, the first connecting plate 351 is bent outward and guide plate 353 is relative to the first connecting plate
351 at least partly towards battery core main body when protruding, and can also be being located at for the lug 120 of each battery core 100 in two battery cores 100
Close to the side of another battery core 100, i.e. lug 120 is located at the width of rechargeable battery from the position that battery core main body 110 is extended
The inside of direction Y.Wherein, the mainboard body 3511 of guide plate 351 is resisted against on the surface of lug 120.
In the present embodiment, the first connecting plate 351 is bent to parallel with the end face of battery core main body 110, effectively reduces connection
Component 35 is in the occupied space in the ends longitudinal direction X, and the side of the Y in the width direction of lug 120 is extended, and is effectively reduced
The thickness of lug 120, can be further reduced connecting elements 35 and 120 junction the space occupied of lug, to effectively carry
The space availability ratio of high charge battery and the energy density of rechargeable battery.The position position of lug 120 being connect with battery core main body 110
Between guide plate 353 and battery core main body 110, when rechargeable battery is vibrated or impacts, guide plate 353 connects relative to first
The part that fishplate bar 351 is protruded to battery core 100 can be resisted against in battery core 100, and stress is led by the guide plate 353 of connecting elements 35
It undertakes, so as to which the lug drawing crack phenomenon caused by vibrating or impacting of lug 120, while the work of lug 120 is effectively relieved
Dynamic space becomes smaller, and the possibility that battery core main body 110 is inserted into after being squeezed reduces, to reduce resulting inside battery
The risk of short circuit improves the service life and security performance of battery core 100.
As shown in Figure 28 to 30, connecting elements 35 includes the first connecting plate for being located at guide plate 353 in width direction both sides
351A and the first connecting plate 351B, the second connecting plate 353 are connected to 353 top of guide plate.First connecting plate 351A's is guiding
The starting altitude for the side that plate 353 is connect with the second connecting plate 352 is higher than the first connecting plate 351B in guide plate 353 and the
The starting altitude of the side of two connecting plates 352 connection.In Figure 29, the first connecting plate 351A and the first connecting plate 351B are represented with H
In the difference in height of the starting altitude for the side that guide plate 353 is connect with the second connecting plate 352.
Since the fast charge demand of rechargeable battery is increasing, connecting elements 35 is needed to have larger area of passage, connects structure
The electric current that the side of part 35 and the second connecting plate 352 is the first connecting plate 351A and the first connecting plate 351B passes in and out side, due to the
One connecting plate has bending demand, to which the partial width that guide plate 353 is connect with the first connecting plate is limited, can only be arranged sometimes
It is relatively narrow, to there is a necking on the current carrying paths of connecting elements 35, if the positioned at 353 both sides of guide plate
One connecting plate overhead height is consistent, then the mainboard body of the size of necking to be in guide plate 353 some embodiments be guide plate 353
Width dimensions, if the initial position of two the first connecting plates is different, the size of necking becomes in guide plate 353 or mainboard body
Width direction both ends the line with the point of two the first connecting plate respective heights, so as to expand area of passage, profit
In the quick charge capability and security performance that improve rechargeable battery.
In a preferred embodiment, guide plate 353 is integrally formed with the second connecting plate 352 by sheet material bending, in guide plate
353 and second the bending part of connecting plate 352 at least one convex epirelief 35D is set.As shown in Figure 28 and Figure 29, in 353 He of guide plate
Two convex epirelief 35D are arranged in the bending part of second connecting plate 352.Two convex epirelief 35D are along guide plate 353 and second in the present embodiment
The bending part of connecting plate 352 is uniformly arranged.
Convex epirelief 35D can make guide plate 353 and the second connecting plate 352 be easy to keep phase when the first connecting plate 351 is bent
To position, each component such as phases such as battery core 100, head cover 30 and shell to be connect with connecting elements 35 when making assembling rechargeable battery
Position between mutually is accurately unified, and is smoothly completed conducive to assembly working, is also conducive to improve the quality of rechargeable battery.Moreover, charging
When battery is impacted or vibrated, guide plate 353 can reduce relative to the deflection of the second connecting plate 352, to conducive to pair
The protection of lug 120.
In addition, in the present embodiment, the connection with electrod assembly is realized by welded connection 3521.
Above example should not be construed as limiting the utility model.For example, the first connecting plate can also be with one group of battery core 100
Connection.For example, connecting elements may include two the first connecting plates positioned at width direction both sides, each first connecting plate and one
Group battery core connection, lug are set to the side of the thickness direction of battery core main body, and each group may include two electricity in two groups of battery cores
Core, the lug of each battery core is located at close to the side of another battery core in one group of two battery cores.In another example in the first connecting plate
Can also be the first connecting plate 351 to guide plate 353 in the case that 351 thickness is set smaller than the thickness of guide plate 353
Guide plate 353 is bent on the outside of width direction to protrude towards 110 side of battery core main body relative to the first connecting plate 351.This reality
With novel the above various embodiments, as long as technical characteristic does not conflict, can refer to or in conjunction with other embodiments the relevant technologies
Content.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model rather than limits it
System；Although the utility model is described in detail with reference to preferred embodiment, those of ordinary skill in the art should
Understand：It can still modify to specific embodiment of the present utility model or some technical characteristics are equally replaced
It changes；Without departing from the spirit of technical solutions of the utility model, should all cover in the claimed technical solution of the utility model
In range.
Claims (11)
1. a kind of connecting elements of rechargeable battery (35), including guide plate (353) and it is shaped on the guide plate (353)
The first connecting plate (351), first connecting plate (351) relative to the guide plate (353) it is bent be arranged, feature
It is, the end of first connecting plate (351) and the bending part of the guide plate (353) is equipped with recessed inwardly from edge
Groove.
2. connecting elements (35) according to claim 1, which is characterized in that first connecting plate (351) is led with described
The end of the bending part of corbel back slab (353) include the opposite end for being respectively at the bending part the first root and second
Portion, the groove include positioned at first root and being set on first connecting plate (351) and the guide plate (353)
The first groove (35B) and/or positioned at second root and be set to first connecting plate (351) and the guide plate
(353) the second groove (35C) on.
3. connecting elements (35) according to claim 1, which is characterized in that the groove and first connecting plate
(351) and/or the guide plate (353) is smoothly connected.
4. connecting elements (35) according to claim 1, which is characterized in that first connecting plate (351) is led with described
There is indentation (35K) between corbel back slab (353).
5. connecting elements (35) according to claim 4, which is characterized in that the indentation (35K) is set to described first
The side of connecting plate (351) being pressurized when being bent relative to the guide plate (353).
6. connecting elements (35) according to claim 1, which is characterized in that the connecting elements (35) includes being separately connected
Two first connecting plates in the opposite both sides of the guide plate (353) width direction, the connecting elements (35) is also
Include the second connecting plate (352) being connect with the guide plate (353), second connecting plate (352) is connected to the guiding
The starting altitude of the upper end of plate (353), the top of described two first connecting plates is different.
7. connecting elements (35) according to claim 1, which is characterized in that the connecting elements (35) further include with it is described
The second connecting plate (352) of guide plate (353) connection, second connecting plate (352) are connected to the upper of the guide plate (353)
End, the one bending of second connecting plate (352) and the guide plate (353) are formed, in the guide plate (353) and described the
The bending part of two connecting plates (352) is equipped at least one convex epirelief (352D).
8. a kind of rechargeable battery, including battery core (100) and the connecting elements (35) according to any in claim 1 to 7, institute
The first connecting plate (351) is stated to connect with the lug (120) of the battery core (100).
9. rechargeable battery according to claim 8, which is characterized in that (Y) prolongs the guide plate (353) in the width direction
It stretches, first connecting plate (351) extends along the width direction (Y) to the outside of the guide plate (353), the guide plate
(353) the battery core main body (110) at least partly relative to first connecting plate (351) towards the battery core (100) protrudes shape
At protrusion, the protrusion is against the battery core (100).
10. rechargeable battery according to claim 9, which is characterized in that the lug (120) is from the width direction (Y)
Side extend.
11. rechargeable battery according to claim 8, which is characterized in that the rechargeable battery further includes connecting with described first
The gasket (310) that fishplate bar (351) is fixedly connected with the lug (120), the lug (120) are located in first connecting plate
(351) between the gasket (310).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820067980.0U CN208014793U (en) | 2018-01-16 | 2018-01-16 | Connecting elements and rechargeable battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820067980.0U CN208014793U (en) | 2018-01-16 | 2018-01-16 | Connecting elements and rechargeable battery |
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| CN208014793U true CN208014793U (en) | 2018-10-26 |
Family
ID=63883685
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