CN208045591U - Connecting elements and rechargeable battery - Google Patents

Abstract

The utility model discloses a kind of connecting elements of rechargeable battery and rechargeable batteries.The connecting elements (1) includes guide plate (11) and is shaped on the guide plate (11) and the first connecting plate (12) for being connect with the battery core (2) of rechargeable battery, first connecting plate (12) relative to the guide plate (11) it is bent be arranged, the thickness of first connecting plate (12) is less than the thickness of the guide plate (11).Rechargeable battery includes battery core and connecting elements above-mentioned, and the first connecting plate of the connecting elements is connect with the lug of the battery core.The connecting elements and rechargeable battery of the utility model can promote the space availability ratio of rechargeable battery, be conducive to improve the energy density of rechargeable battery.

Description

Connecting elements and rechargeable battery

Technical field

The utility model is related to rechargeable battery technical field, more particularly to a kind of connecting elements and rechargeable battery.

Background technology

Rechargeable battery is got in mobile phone, DV, in the uses of the every field such as electric vehicle, electric bicycle Come more frequent.To being widely used but also people are higher and higher to the energy density requirement of rechargeable battery for rechargeable battery.

The connecting elements of rechargeable battery is mainly by connecting the lug of battery core and the pole of rechargeable battery come to rechargeable battery The electric current of electrode is guided and is conveyed.

Bent connecting elements in the prior art, by the first connecting plate for being connected with lug to connecting elements into Row bending, makes the first connecting plate perpendicular to the longitudinal direction of battery core to improve the space availability ratio of rechargeable battery.

In the process of implementing the utility model, designer has found, the connecting elements and rechargeable battery of the prior art, i.e., Connecting elements is set to bend, however it remains connecting elements occupies the larger problem in space 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 promote the space of rechargeable battery Utilization rate and energy density.

The utility model first aspect provides a kind of connecting elements of rechargeable battery, the connecting elements include guide plate and It is shaped in the first connecting plate on the guide plate and for being connect with the battery core of rechargeable battery, the first connecting plate phase For the guide plate it is bent be arranged, the thickness of first connecting plate is less than the thickness of the guide plate.

In some embodiments, the guide plate includes mainboard body and is set to the flange of the mainboard lateral edge, institute Guide plate is stated to connect with first connecting plate by the flange.

In some embodiments, the position of the guide plate being connect with first connecting plate from the guide plate to Thickness is gradually thinned on the direction of first connecting plate.

In some embodiments, the connecting elements includes two of the opposite both sides for being connected to the guide plate First connecting plate.

In some embodiments, there is indentation between first connecting plate and the guide plate.

In some embodiments, first connecting plate relative to the guide plate it is bent be arranged, it is described first connect The bending part of fishplate bar and the guide plate includes the first root and the second root for being respectively at opposite end, wherein in institute State the first groove being provided at the first root on first connecting plate and the guide plate and/or at described second The second groove being provided at portion on first connecting plate and the guide plate.

In some embodiments, the connecting elements includes two of the opposite both sides for being connected to the guide plate First connecting plate, the connecting elements further include the second connecting plate, and second connecting plate is connected to the guide plate The starting altitude of upper end, the top of described two first connecting plates is different.

In some embodiments, the connecting elements further includes the second connecting plate, and second connecting plate is connected to described The upper end of guide plate, second connecting plate are arranged relative to the guide plate bending, connect in the guide plate and described second The bending part of fishplate bar 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 First connecting plate of the connecting elements, the connecting elements is connect with the lug of the battery core.

In some embodiments, first connecting plate is bent to the outside of the guide plate, the guide plate at least portion Split-phase is protruded to form protrusion for the battery core main body of first connecting plate towards the battery core, and the protrusion is against described Battery core.

In some embodiments, the lug extends from the side of the width direction of the battery core main body of the battery core.

In some embodiments, the connecting elements includes the two of the width direction both sides for being connected to the guide plate A first connecting plate, the homopolarity lug of battery core described in every group connect with one described first in described two first connecting plates Fishplate bar connects.

In some embodiments, battery core described in every group includes a battery core, and the lug of each battery core is described Extend from the side far from battery core described in another group of the battery core main body in width direction, alternatively, each battery core The lug extending from the battery core main body close to the side of battery core described in another group in the width direction.

Based on connecting elements provided by the utility model, the thickness for the first connecting plate for being used to connect with lug, which is less than, leads The thickness of corbel back slab, the connecting elements with guide plate in the prior art compared with the connecting elements of the same thickness of the first connecting plate, can So that the inner space for the rechargeable battery that connecting elements occupies after bending further decreases, rechargeable battery is further promoted Space availability ratio is conducive to improve the energy density of rechargeable battery.Since the first connection plate thickness reduces, the can also be effectively improved The assemble welding quality of one connecting plate and lug, and guide plate thickness and still keep relatively large, then it can reduce the electricity of guide plate Resistance makes the internal resistance of rechargeable battery meet demand, ensures that rechargeable battery will not drastically generate heat in big multiplying power current charging and discharging.Separately Outside, the thickness of the first connecting plate is smaller relative to the thickness of guide plate, and the first connecting plate is easy to bend, and is conducive to ensure connecting elements Size after being assembled with battery core is also conducive to reduce the damage in the first connecting plate bending process to battery core main body or lug.

The rechargeable battery of the utility model has all advantages of the connecting elements of the utility model.

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 a are the connecting elements of the utility model one embodiment before the first connecting plate is bent relative to guide plate Structural schematic diagram；

Fig. 1 b are the upward view of connecting elements shown in Fig. 1 a；

Fig. 1 c are the portions the A partial enlarged view of Fig. 1 b；

Fig. 2 a are that structure of the connecting elements of Fig. 1 a illustrated embodiments after the first connecting plate is bent relative to guide plate is shown It is intended to；

Fig. 2 b are the upward view of connecting elements shown in Fig. 2 a；

Fig. 2 c are the portions the B partial enlarged view of Fig. 2 b；

Fig. 3 a are the connecting elements of the utility model one embodiment after the first connecting plate is bent relative to guide plate Structural schematic diagram；

Fig. 3 b are the upward view of connecting elements shown in Fig. 3 a；

Fig. 3 c are the portions the C partial enlarged view of Fig. 3 b；

Fig. 4 a are knot of the connecting elements of one embodiment of the utility model before the first connecting plate is bent relative to guide plate Structure schematic diagram；

Fig. 4 b are the upward view of the connecting elements of Fig. 4 a illustrated embodiments；

Fig. 4 c are the portions the D partial enlarged view of Fig. 4 b, wherein the cross-sectional shape of indentation is arc；

Fig. 4 d are the partial structural diagram of the connecting elements of an alternate embodiment of embodiment shown in Fig. 4 b, wherein The cross-sectional shape of indentation is trapezoidal；

Fig. 4 e are the partial structural diagram of the connecting elements of another alternate embodiment of embodiment shown in Fig. 4 b, In, the cross-sectional shape of indentation is triangle；

Fig. 5 a are that structure of the connecting elements of Fig. 4 a illustrated embodiments after the first connecting plate is bent relative to guide plate is shown It is intended to；

Fig. 5 b are the upward view of the connecting elements of Fig. 5 a illustrated embodiments；

Fig. 5 c are the portions the E partial enlarged view of Fig. 5 b；

Fig. 6 a are knot of the connecting elements of one embodiment of the utility model before the first connecting plate is bent relative to guide plate Structure schematic diagram；

Fig. 6 b are the portions the F partial enlarged view of Fig. 6 a；

Fig. 6 c are the portions the G partial enlarged view of Fig. 6 a；

Fig. 7 a are that structure of the connecting elements of Fig. 6 a illustrated embodiments after the first connecting plate is bent relative to guide plate is shown It is intended to；

Fig. 7 b are the portions the H partial enlarged view of Fig. 7 a；

Fig. 7 c are the portions the I partial enlarged view of Fig. 7 a；

Fig. 8 a are the connecting elements of the utility model one embodiment before the first connecting plate is bent relative to guide plate Structural schematic diagram；

Fig. 8 b are that structure of the connecting elements of Fig. 8 a illustrated embodiments after the first connecting plate is bent relative to guide plate is shown It is intended to.

Fig. 9 a are connecting elements in the rechargeable battery (removal shell) of one embodiment of the utility model in the first connecting plate phase Structural schematic diagram before being bent for guide plate；

Fig. 9 b look up partial enlarged view for rechargeable battery shown in Fig. 9 a；

Figure 10 a be Fig. 9 a illustrated embodiments rechargeable battery (removal shell) in connecting elements the first connecting plate relative to Structural schematic diagram after guide plate bending；

Figure 10 b are the partial enlarged view of the upward view of rechargeable battery shown in Figure 10 a；

Figure 11 a are connecting elements in the rechargeable battery (removal shell) of the utility model one embodiment in the first connecting plate Structural schematic diagram after being bent relative to guide plate；

Figure 11 b look up partial enlarged view for rechargeable battery shown in Figure 11 a.

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 the technology, method and apparatus should be considered as awarding Weigh part of specification.In shown here and discussion all examples, any occurrence should be construed as merely example Property, not as limitation.Therefore, the other examples of exemplary embodiment can have different values.It should be noted that：It is similar Label and letter similar terms are indicated in following attached drawing, therefore, once be defined in a certain Xiang Yi attached drawing, then with It need not be further discussed in attached drawing afterwards.

For ease of description, herein can with use space relative terms, as " ... on ", " in ... top ", " ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure Except different direction in use or operation.For example, if the device in attached drawing is squeezed, it is described as " in other devices It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction " Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and " in ... lower section " two kinds of orientation.The device can also other different modes positioning (be rotated by 90 ° or be in other orientation), and And respective explanations are made to the opposite description in space used herein above.

In the description of the present application, " longitudinal direction " refers to the longitudinal direction of rechargeable battery and indulging for battery core 2 To direction, correspond to the X-direction in Fig. 9 a；" width direction " refers to the width direction of rechargeable battery, corresponds to figure Y-direction in 9a, " 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. 9 a, " short transverse " is to fill The short transverse and connecting elements of battery and battery core and its short transverse of guide plate.

As shown in Fig. 1 a to Figure 11 b, the utility model embodiment provides a kind of connecting elements 1 of rechargeable battery.Connect structure Part 1 is used to make the battery core 2 of rechargeable battery to be connected with formation outside rechargeable battery.Connecting elements 1 include guide plate 11 and one at Type is in the first connecting plate 12 on guide plate 11 and for being connect with battery core.First connecting plate 12 is bent relative to guide plate 11 Ground is arranged.Wherein, the thickness of the first connecting plate 12 is less than the thickness of guide plate 11.

The thickness of the first connecting plate 12 for being connect with lug of connecting elements 1 is less than the thickness of guide plate 11, and existing There is the guide plate in technology compared with the connecting elements of the same thickness of the first connecting plate, can make connecting elements 12 after bending The inner space of the rechargeable battery of occupancy further decreases, so as to further promote the space availability ratio of rechargeable battery, profit In the energy density for improving rechargeable battery.Since the thickness of the first connecting plate 12 reduces, the first connecting plate can also be effectively improved 12 with the assemble welding quality of lug 21.And the thickness of guide plate 11 still keeps relatively large, then can reduce guide plate 11 Resistance makes the internal resistance of rechargeable battery meet demand, ensures that rechargeable battery will not drastically generate heat in big multiplying power current charging and discharging.Separately Outside, the thickness of the first connecting plate 12 is smaller relative to the thickness of guide plate 11, the bending of the first connecting plate 12 is additionally favorable for, to reduce To the 21 issuable damage of battery core 2 or lug in bending process.

Below in conjunction with each attached drawing, to the utility model, some preferred embodiments are described in detail.

As shown in Fig. 1 a to Fig. 2 c, connecting elements 1 includes guide plate 11 and the width direction for being shaped in guide plate 11 Second connecting plate 15 of two first connecting plates 12 and the top for being shaped in guide plate 11 of upper opposite sides.First connection Plate 12 relative to guide plate 11 it is bent be arranged.

In the present embodiment, the first connecting plate 12 is in the state vertical with guide plate before being bent relative to guide plate 11. First connecting plate 12 relative to guide plate 11 before bending, and the second connecting plate 15 is relative to the first connecting plate 12 to the first connecting plate 12 opposite direction is bent to form.In the present embodiment, connecting hole is provided on the second connecting plate 15, the second connecting plate 15 passes through The pole of connecting hole and rechargeable battery connects.

As shown in Fig. 1 a to Fig. 2 c, the thickness of the first connecting plate 12 is less than the thickness of guide plate 11.It is preferred real at some It applies in example, the position of guide plate 11 being connect with the first connecting plate 12 gradually subtracts from 11 to the first connecting plate of guide plate, 12 thickness It is thin.In some embodiments (not shown), guide plate and the first connecting plate can also form step-like structure.

In some preferred embodiments, guide plate 11 includes mainboard body 111 and is set to turning over for 111 lateral edges of mainboard body Side 112, guide plate 11 are connect by flange 112 with the first connecting plate 12.

As shown in Fig. 1 a to Fig. 2 c, in the embodiment, the first connecting plate 12 is connect with mainboard body 111 by flange 112, the One connecting plate 12 is bent to the inside of guide plate 11.After bending, between having centainly between the first connecting plate 12 and mainboard body 111 Every.

First connecting plate 12 is bent inwardly to guide plate 11, relative to the first connecting plate 12 to the outer lateral bending of guide plate 11 For folding, the minimum overcurrent width of guide plate 11 can be widened under conditions of rechargeable battery thickness is certain, to conducive to raising The quick charge capability of rechargeable battery.

Two the first connecting plates 12 are respectively used to connect with the homopolarity lug 21 of two groups of battery cores 2, to pass through connecting elements 1 It is connected in parallel two groups of battery cores 2.Wherein, every group of battery core 2 may include a battery core 2, can also include more than two battery cores 2.

In the embodiment as shown in Fig. 3 a to Fig. 3 c, the opposite sides of the width direction of the guide plate 11 of connecting elements 1 is each From one the first connecting plate 12 of connection, the top of guide plate 11 is connected with the second connecting plate 15.It is provided on second connecting plate 15 Connecting hole.The position that guide plate 11 is connect with the first connecting plate 12 is gradually thinned from 11 to the first connecting plate of guide plate, 12 thickness. Guide plate 11 includes mainboard body 111 and the flange 112 for being set to 111 lateral edges of mainboard body, the first connecting plate 12 and mainboard body 111 It is connected by flange 112.

Embodiment shown in Fig. 3 a to Fig. 3 c unlike embodiment shown in Fig. 1 a to Fig. 2 c, the first connecting plate 12 to The outside of guide plate 11 is bent.

In embodiment shown in Fig. 3 a to Fig. 3 c, have centainly between mainboard body 111 after the bending of the first connecting plate 12 Interval, for connecting elements 1 when being connect with battery core 2, guide plate 11 is at least partly relative to the first connecting plate 12 towards the electricity of battery core 2 22 side of core main body protrudes to form protrusion, and preferably, protrusion and battery core 2 against.Using the connection structure of this structure Part, when vibration or impact occur for rechargeable battery, stress is mainly undertaken by the guide plate 11 of connecting elements 1, so as to effective Alleviate the 21 drawing crack phenomenon of lug caused by vibrating or impacting, and then service life and the safety of rechargeable battery can be improved Energy.Further, the scope of activities of lug 21 is opposite is reduced, and lug 21 is inserted into battery core main body 22 possibility after being squeezed subtracts It is small, so as to reduce the risk of resulting internal short-circuit of battery, be also beneficial to improve rechargeable battery service life and Security performance.

As shown in Fig. 4 a to Fig. 5 c, in some preferred embodiments, have between the first connecting plate 12 and guide plate 11 Indentation 13.

As shown in Fig. 4 a, Fig. 4 b, Fig. 4 c, it is arranged in advance in 12 bending place of the first connecting plate before connecting elements 1 is bent and carves Trace 13 can make connecting elements 1 form weak link at indentation 13.As shown in Fig. 5 a, 5b, 5c, indentation 13 can to connect Connection member 1 is more easy to reach the shape of design requirement after its bending.

Bending position is more acurrate when setting indentation 13 makes the first connecting plate 12 relative to 11 bending of guide plate, is conducive to connect Size after connection member 1 is bent is accurate, to be conducive to rechargeable battery assembling, improves rechargeable battery quality.Moreover, indentation 13 makes It is more effortless when the first 12 bending of connecting plate, it reduces because bending is to the 21 issuable damage of battery core 2 and its lug.

In the present embodiment, in order to realize the sky for effectively bending and efficiently controlling after connecting elements 1 is bent of connecting elements 1 Between size, it is preferable that distance of the indentation 13 away from mainboard body 11 is 1~2 times of thickness of main plate body.

The cross-sectional shape of indentation 13 can be a variety of, for example, the cross-sectional shape of indentation 13 can be as illustrated in fig. 4 c Arc or as shown in figure 4d trapezoidal or triangle as shown in fig 4e.

In some preferred embodiments, the end of the first connecting plate 12 and the connecting portion of guide plate 11 is used equipped with crack arrest Groove.

As shown in Fig. 6 a to Fig. 7 c, in the connecting elements 1 of the embodiment, the first connecting plate 12 is relative to 11 bendable of guide plate The bending part of the setting of folding ground, the first connecting plate 12 and guide plate 11 includes the first root and second for being respectively at opposite end Root, wherein the first groove 141 on the first connecting plate 12 and guide plate 11 is provided at the first root, second The second groove 142 on the first connecting plate 12 and guide plate 11 is provided at root.Setting crack arrest groove can make Connecting elements 1 is less prone to connecting elements 1 the cracking ends of connecting portion the phenomenon that in the process of bending, is effectively improved connection The problem of Cracking of component 1 in the process of bending.

In some preferred embodiments, connecting elements 1 includes two the first connecting plates for being set to 11 both sides of guide plate It is different with the starting altitude of the second connecting plate 15 for being connected to 11 upper end of guide plate, the top of the first connecting plate of two of which.

As shown in Fig. 8 a to Fig. 8 b, connecting elements 1 include positioned at guide plate 11 opposite sides the first connecting plate 12A and First connecting plate 12B, wherein the side that the guide plate 11 of connecting elements 1 is connect with the second connecting plate 15 is that electric current passes in and out side, i.e., The upside of connecting elements 1, the top of the first connecting plate 12A are higher than the top of the first connecting plate 12B.As shown in Figure 8 b, the two Difference in height is labeled as h.

Since the fast charge demand of rechargeable battery is increasing, connecting elements 1 is needed to have larger area of passage, due to first Connecting plate 12 has bending demand, to which the partial width that guide plate 11 is connect with the first connecting plate 12 is limited, can only be arranged sometimes It is relatively narrow, to there is a necking on the current carrying paths of connecting elements 1, if the positioned at 11 both sides of guide plate One connecting plate overhead height is consistent, then the size of necking is the width dimensions of main plate body, if the top of two the first connecting plates Initial position is different, then the size of necking become the width direction both sides of mainboard body respectively with two the first connecting plate tops The line of corresponding height point improves the security performance of rechargeable battery so as to expand the area of passage of guide plate 11.

As figures 8 a and 8 b show, in some preferred embodiments, in the bending of guide plate 11 and the second connecting plate 15 At least one convex epirelief 15D is arranged in place.Convex epirelief 15D can make guide plate 11 and the second connecting plate 15 when the first connecting plate 12 is bent It is easy to keep relative position, each component such as battery core, head cover and shell to connect with connecting elements 1 when making assembling rechargeable battery Accurately unify etc. mutual position, to smoothly complete conducive to assembly working, is also conducive to improve the quality of rechargeable battery.Separately Outside, when rechargeable battery is by shock and vibration, convex epirelief 15D is conducive to ensure the opposite position of guide plate 11 and the second connecting plate 15 It sets, to conducive to protection lug.

In the embodiment, two convex epirelief 15D have been uniformly arranged along the bending part of guide plate 11 and the second connecting plate 15.

In addition, in the present embodiment, weld part 151 is set on second connecting plate 15.Connecting elements 1 by weld part 151 with The pole of rechargeable battery is welded to connect.

As shown in Fig. 9 a to Figure 11 b, the utility model embodiment also provides a kind of rechargeable battery, including battery core 2 and this reality It is connect with the lug 21 of battery core 2 with the first connecting plate 12 of the connecting elements 1 of novel previous embodiment, connecting elements 1.

Fig. 9 a to Figure 10 b show the rechargeable battery that the first connecting plate 12 is bent inwardly relative to guide plate 11.

As shown in Fig. 9 a to Figure 10 b, rechargeable battery includes shell, head cover 3, battery core 2 and connecting elements 1, and middle casing is not Diagram.Shell and head cover 3 form installation space, and the part that battery core 2 and connecting elements 1 are located at 3 lower part of head cover is located at installation space It is interior.Connecting elements 1 is connect with the pole on head cover 3.Head cover 3 is equipped with Positive Poles 31 and cathode pole 32.On head cover 3 also The other structures such as explosion-proof valve, filling liquid hole can be set.

The connecting elements 1 of rechargeable battery can first with head cover 3 and thereon pole 31 be fixedly connected, then connect with battery core 2. After connecting elements 1 is completed with battery core 2, the part for being located at 3 lower section of head cover of connecting elements 1 is packed into shell together with battery core 2 In vivo.After installing connecting elements 1 and battery core 2, head cover 3 covers the open-mouth in shell just, is tightly connected head cover 3 and shell again later Body.

Battery core 2 includes battery core main body 22 and the lug 21 extended from battery core main body 22.

Winding forms square electric cell after battery core 2 can be stacked by positive plate, isolation film, negative plate.Positive plate, isolation film and The width direction of negative plate forms the longitudinal direction of battery core 2.

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.

In the present embodiment, battery core 2 includes positive pole ear and negative lug.Positive pole ear by the first metal foil one side edge On the part of uncoated active material formed.Negative lug is by the uncoated active material in the second metal foil one side edge Part is formed.Positive pole ear and negative lug are located at the both ends of the longitudinal direction of battery core 2, and protrude from the respective end of isolation film Portion.

As shown in Fig. 9 a to Figure 10 b, the lug 21 of battery core 2 from the thickness direction (width direction Y) of battery core main body 22 one It draws side.In the present embodiment specifically, lug 21 is set to the side of the split of the width direction Y of battery core main body 22.

As shown in Fig. 9 a to Figure 10 b, mutually separate side is prolonged respectively on the width direction Y for two battery cores 2 being arranged in parallel Lug 21 is stretched out, and lug 21 is not arranged in side adjacent on width direction Y, so as to form the vacancy of width direction Y. The size that lug 21 occupies on the longitudinal direction of battery core 2 after the setting makes the first connecting plate 12 be bent relative to guide plate 11 subtracts Small, so that the first connecting plate 12 can be closer to battery core main body 22, connecting elements 1 and battery core 2 are in the longitudinal direction Overall dimensions reduce, to improve the energy density of rechargeable battery.In addition, the activity space of lug 21 in the longitudinal direction reduces, from And reduce the possibility that rechargeable battery internal short-circuit is caused because of insertion battery core main body 22 of lug 21.

In the present embodiment battery core 2 include be respectively arranged at battery core main body 22 longitudinal direction X both ends positive pole ear and Negative lug.Preferably, the position consistency that positive pole ear and negative lug are distributed in width direction Y.

As shown in Fig. 9 a and Figure 10 a, the lug 21 of battery core 2 is located at the middle part of the short transverse of battery core main body 22.In battery core 2 Short transverse Z on, lug 21 up and down respectively formed a vacancy.The setting makes lug 120 be easier to bend, to make lug 120 are located at the first connecting plate 351 back to the side of battery core main body 110.

As shown in Fig. 9 a to Figure 10 b, connecting elements 1 is located at the end of the longitudinal direction X of battery core 2.The longitudinal direction of battery core 2 A connecting elements 1 is respectively set in the both ends X.One of connecting elements 1 is connect with the positive pole ear of battery core 2, another connection Component 1 is connect with the negative lug of battery core 2.The connecting elements 1 being connect with the positive pole ear of battery core 2 and the positive pole on head cover 3 Column 31 connects, and the connecting elements 1 being connect with the negative lug of battery core 2 is connect with the cathode pole 32 on head cover 3, to pass through Connecting elements 1 can make lug 21 realize connection with corresponding pole.

The connecting elements 1 at 2 both ends of battery core is identical as the corresponding connection type of lug 21 of one end, therefore, in theory below In bright, only by taking the connection relation positioned at the connecting elements 1 of one end longitudinal direction X of battery core 2 and connecting elements 1 with battery core 2 as an example It illustrates.

Connecting elements 1 includes two the first connecting plates 12 of the both sides of the width direction Y set on guide plate 11, each to connect Two the first connecting plates 12 of component 1 are connect with the lug of two battery cores 21 respectively.First connecting plate 12 is into guide plate 11 Lateral bending is rolled over.In the present embodiment, the first connecting plate 12 is bent to the inside of the width direction Y of guide plate 11 after being welded with lug 21 And it is vertical with the longitudinal direction X of battery core 2, also, two the first connecting plates 12 are non-overlapping on the width direction Y of guide plate 11.

Wherein, in two battery cores 2 lug 21 of each battery core be located remotely from the width direction Y of battery core main body 22 it is another The side of a battery core 2.

First connecting plate 12 is parallel with guide plate 11 after being bent relative to guide plate 11, and to the interior lateral bending of guide plate 11 Folding, it is possible to reduce to connecting elements 1 in the occupied space of rechargeable battery longitudinal end, width of the lug 21 from battery core main body 22 A part of position of direction Y is drawn, and is effectively reduced the thickness of lug 21, can be further reduced connecting elements 1 and lug 21 The space hold of junction, to effectively improve the space availability ratio of rechargeable battery and the energy density of rechargeable battery.Due to pole The integral thickness of ear 21 is thinned, and the distance of the longitudinal direction along battery core 2 of lug 21 is reduced, along the work of the longitudinal direction of battery core 2 Dynamic space effectively reduces, and when rechargeable battery is vibrated or impacts, lug 21 is hardly damaged；Meanwhile after lug 21 is squeezed The possibility for being inserted into battery core main body 22 reduces, and to reduce the risk of resulting internal short-circuit of battery, and then improves battery core 2 Service life and security performance.Also, the set-up mode is relative to first connecting plate 12 to the width direction of guide plate 11 For the bending of outside so that the minimum overcurrent width that guide plate 11 can be widened under conditions of rechargeable battery thickness is certain, from And conducive to the quick charge capability of raising rechargeable battery.

Figure 11 a to Figure 11 b show the rechargeable battery that the first connecting plate 12 is bent outward relative to guide plate 11.

As shown in Figure 11 a to Figure 11 b, connecting elements 1 includes two of the both sides of the width direction Y set on guide plate 11 the Two the first connecting plates 12 of one connecting plate 12, each connecting elements 1 are connect with the lug of two battery cores 21 respectively, the first connection Plate 12 is bent to the direction far from guide plate 11.First connecting plate 12 is located at the outside of the width direction of guide plate 11 and is parallel to The end face of battery core main body 22, i.e., perpendicular to the longitudinal direction of battery core 2.

In the present embodiment preferably, guide plate 11 is at least partly protruded relative to the first connecting plate 12 towards 2 side of battery core Protrusion is formed, protrusion is resisted against battery core 2.

It is convex since guide plate 11 at least partly protrudes to form protrusion relative to the first connecting plate 12 towards 2 side of battery core Go out portion and is resisted against battery core 2, when vibration or impact occur for rechargeable battery, most of stress is undertaken by 1 guide plate 11 of connecting elements, So as to which the lug drawing crack phenomenon caused by vibrating or impacting of lug 21 is effectively relieved, while lug 21 is along the longitudinal direction of battery core 2 Activity space effectively reduced, lug 21 is inserted into battery core main body 22 possibility after being squeezed reduces, to reduce thus The risk of the internal short-circuit of battery of generation.Since the possibility and lug 21 of 21 drawing crack of lug are inserted into the possibility of battery core main body 22 Reduce, the service life and security performance of battery core 2 can be improved.

In the present embodiment, after guide plate 11 is relative to 2 location determination of battery core, the first connecting plate 12 is being parallel to battery core 2 It is fixedly connected with lug 21 in the state of longitudinal direction, bending the first connecting plate 12 to the outside of guide plate 11 later completes connecting elements 1 with the assembling of battery core 2.

In some embodiments (not shown), after location determination of the guide plate 11 relative to battery core 2, the first connecting plate 12 It can be fixedly connected with lug 21 in the state of deviateing longitudinal certain angle of battery core 2, later to the outer lateral bending of guide plate 11 The first connecting plate 12 is rolled over, the assembling of connecting elements 1 and battery core 2 is completed.

In above each assembling mode, in fixed lug 21, operating space is larger, it is easy to accomplish lug 21 is connect with first It is fixedly connected between plate 12, is conducive to ensure the quality of connection of the two.

Guide plate 11 includes mainboard body and flange, and flange is located at the lateral edges of the width direction of mainboard body and is directed away from electricity The direction of core 2 extends, and the first connecting plate 12 is connect by flange with guide plate 11.

In the present embodiment, flange is vertical with mainboard body.In other embodiments (not shown), flange can also be to mainboard body Inside tilt or flange to the outside of mainboard body tilt.

Connecting elements 1 includes two the first connecting plates 12 of the both sides for the width direction for being set to guide plate 11, charging electricity Pond includes two battery cores 2 arranged side by side, and the homopolarity lug 21 of two battery cores 2 is connect with two the first connecting plates 12 respectively.

In the present embodiment, two battery cores 2 are symmetrical arranged.The lug 21 of each battery core 2 is located at close to another in two battery cores 2 The side of a battery core 2.That is, lug 21 is located at the inside of the width direction Y of rechargeable battery from the position that battery core main body 22 is extended. Wherein, the mainboard body of guide plate 11 is resisted against on the surface of lug 21.

In the present embodiment, the first connecting plate 12 is bent to parallel with the end face of battery core main body 22, effectively reduces connection structure Part 1 is in the occupied space of rechargeable battery longitudinal end, and lug 21 is drawn from the side of the width direction Y of battery core main body 22, The thickness of lug 21 is effectively reduced, connecting elements 1 and 21 junction the space occupied of lug can be further reduced, to have Effect improves the energy density of the space availability ratio and rechargeable battery of rechargeable battery.The activity space of lug 21 along longitudinal direction is limited, from And the 21 drawing crack phenomenon of lug caused by vibrating or impacting of lug 21 can be effectively relieved, while lug 21 be squeezed after be inserted into The possibility of battery core main body 22 reduces, and to reduce the risk of resulting internal short-circuit of battery, that improves battery core 2 uses the longevity Life and security performance.

When the first connecting plate 12 turns down outward relative to guide plate, the lug 21 of each battery core 2 in two battery cores 2 The side of another battery core 2 can be located remotely from.That is, lug 21 is located at rechargeable battery from the position that battery core main body 22 is extended The outside of thickness direction.At this time preferably, it can be at least partly bonded with battery core main body 22 with guide plate 12, in charging electricity When pond is vibrated or impacts, the stress smaller of lug 21, also smaller, the security performance of rechargeable battery are more preferable in movable space.

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 (13)

1. a kind of connecting elements of rechargeable battery (1), the connecting elements (1) includes guide plate (11) and is shaped in described The first connecting plate (12) on guide plate (11) and for being connect with the battery core (2) of rechargeable battery, first connecting plate (12) Relative to the guide plate (11) it is bent be arranged, which is characterized in that the thickness of first connecting plate (12) is less than described The thickness of guide plate (11).

2. connecting elements (1) according to claim 1, which is characterized in that the guide plate (11) includes mainboard body (111) With the flange (112) for being set to mainboard body (111) lateral edges, the guide plate (11) passes through the flange (112) and institute State the first connecting plate (12) connection.

3. connecting elements (1) according to claim 1, which is characterized in that the guide plate (11) connects with described first The position of fishplate bar (12) connection thickness on the direction from the guide plate (11) to first connecting plate (12) is gradually thinned.

4. connecting elements (1) according to claim 1, which is characterized in that the connecting elements (1) includes being connected to Two first connecting plates (12) of the opposite both sides of the guide plate (11).

5. connecting elements (1) according to claim 1, which is characterized in that first connecting plate (12) and the guiding There is indentation (13) between plate (11).

6. connecting elements (1) according to claim 1, which is characterized in that first connecting plate (12) is relative to described Guide plate (11) is arranged bently, and the bending part of first connecting plate (12) and the guide plate (11) includes locating respectively In the first root and the second root of opposite end, wherein be provided at first root positioned at first connecting plate (12) it and the first groove on the guide plate (11) and/or is provided with positioned at first connecting plate at second root (12) and the second groove on the guide plate (11).

7. connecting elements (1) according to claim 1, which is characterized in that the connecting elements (1) includes being connected to Two first connecting plates of the opposite both sides of the guide plate (11), the connecting elements (1) further includes the second connection Plate (15), second connecting plate (15) are connected to the upper end of the guide plate (11), the top of described two first connecting plates Starting altitude it is different.

8. connecting elements (1) according to claim 1, which is characterized in that the connecting elements (1) further includes the second connection Plate (15), second connecting plate (15) are connected to the upper end of the guide plate (11), second connecting plate (15) relative to Guide plate (11) the bending setting is equipped at least one in the bending part of the guide plate (11) and second connecting plate (15) A convex epirelief (15D).

9. a kind of rechargeable battery, which is characterized in that including battery core (2) and according to any connection structure in claim 1 to 8 Part (1), the first connecting plate (12) of the connecting elements (1) are connect with the lug (21) of the battery core (2).

10. rechargeable battery according to claim 9, which is characterized in that first connecting plate (12) is to the guide plate (11) outside bending, the guide plate (11) is at least partly relative to first connecting plate (12) towards the battery core (2) Battery core main body (22) protrusion form protrusion, the protrusion is against the battery core (2).

11. rechargeable battery according to claim 9, which is characterized in that battery core of the lug (21) from the battery core (2) Extend the side of the width direction (Y) of main body (22).

12. rechargeable battery according to claim 11, which is characterized in that the connecting elements (1) includes being connected to Two first connecting plates of both sides width direction (Y) of the guide plate (11), the homopolarity lug of battery core (2) described in every group It is connect with first connecting plate in described two first connecting plates.

13. rechargeable battery according to claim 12, which is characterized in that battery core (2) described in every group includes a battery core (2), the lug (21) of each battery core (2) in the width direction (Y) far from the battery core main body (22) The side of battery core (2) described in another group is extended, alternatively, the lug (21) of each battery core (2) is in the width side The extending close to the side of battery core (2) described in another group from the battery core main body (22) on (Y).