CN209104221U - Battery modules - Google Patents

Abstract

The utility model provides a kind of battery modules comprising: multiple batteries are arranged successively along its length；Cushion is set to along its length between two neighboring battery；Cushion includes: main part；Extension is extended outward from main part along the end face of short transverse, and extension includes recess portion and protrusion, and protrusion is located at the two sides of extension in the width direction and protrudes outward, and recess portion is located between protrusion in the width direction and opposite lug inwardly concaves.When cushion is by extruding force along its length, the extruding force that cushion is subject to focuses on recess portion and the protrusion of extension, the recess portion stress deformation of extension and protrude outward, deformation in the width direction is squeezed by recess portion positioned at the protrusion of recess portion two sides to be integrally squeezed greater than cushion along the deformation of short transverse, guarantee that cushion, along the correspondence surface of short transverse, and then will not influence battery along the planarization on the correspondence surface of short transverse without departing from battery.

Description

Battery modules

Technical field

The utility model relates to field of batteries more particularly to a kind of battery modules.

Background technique

In the structure of battery modules, cushion is set between battery as a kind of padded coaming.Existing cushion Shape be rectangle or be middle opening frame shape, cushion may exceed along the end face of short transverse when being squeezed Battery is along the surface of short transverse, and then the outside dimension and battery that will affect battery modules are along the smooth of the surface of short transverse Property.On the one hand need in the case of the bottom gluing of battery modules, if using existing cushion, cushion battery it Between by battery modules assembly force squeeze when, cushion can be forced out battery along the bottom surface of short transverse, lead to battery modules Bottom out-of-flatness, glue-line is highly non-uniform, causes the adhesive strength of battery inconsistent, and influences the service life of battery modules.It is another For aspect in the case of the bottom of battery modules is arranged heat exchanger plates and is used for battery heat exchange, cushion is beyond battery along short transverse Bottom surface, make the out-of-flatness of battery modules bottom, influence heat exchange efficiency.

Utility model content

In view of the existing technical defect, the purpose of this utility model is to provide a kind of battery modules, will not shadow Battery is rung along the planarization on the correspondence surface of short transverse.

To achieve the goals above, the utility model provides a kind of battery modules comprising: multiple batteries, along length Direction is arranged successively；Cushion is set to along its length between two neighboring battery；Cushion includes: main part；Extend Portion is extended outward from main part along the end face of short transverse, and extension includes recess portion and protrusion, protrusion position in the width direction In extension two sides and protrude outward, recess portion is located between protrusion in the width direction and opposite lug inwardly concaves.

In one embodiment, the surface of recess portion is cambered surface.

In one embodiment, the surface of recess portion is plane.

In one embodiment, chamfering or fillet are provided between protrusion and recess portion.

In one embodiment, angle of the main part between the end face and extension of short transverse is not more than 90 °.

In one embodiment, main part is provided with chamfering or fillet between the end face and extension of short transverse.

In one embodiment, recess portion is less than protrusion from main part along short transverse along the height that short transverse inwardly concaves End face height outstanding.

In one embodiment, the outer surface of protrusion is cambered surface.

In one embodiment, extension is set to main part along the end face of the downside of short transverse.

In one embodiment, extension is set to main part along the end face of the upside of short transverse.

In one embodiment, main part along the upside of short transverse end face and main part along the downside of short transverse end Face is provided with extension.

In one embodiment, main part is along the extension and main part of the endface setting of the upside of short transverse along height The extension of the endface setting of the downside in direction is with respect to main part mirror symmetry.

In one embodiment, battery modules further include heat exchanger plates, are arranged and are fixed on multiple batteries under short transverse Side.

In one embodiment, the vertex of protrusion is without departing from battery along the correspondence surface of short transverse.

The beneficial effects of the utility model are as follows: when cushion is by extruding force along its length, what cushion was subject to Extruding force focuses on recess portion and the protrusion of extension, the recess portion stress deformation of extension and protrude outward, positioned at recess portion two sides Protrusion is squeezed deformation in the width direction by recess portion and is integrally squeezed greater than cushion along the deformation of short transverse, guarantees cushion Without departing from battery along the correspondence surface of short transverse, and then it will not influence battery along the smooth of the correspondence surface of short transverse Property.

Detailed description of the invention

Fig. 1 is the partial exploded perspective view of the battery modules of the utility model.

Fig. 2 is the perspective view of another angle of the battery modules of Fig. 1, and wherein heat exchanger plates are not shown.

Fig. 3 is the battery of the battery modules of Fig. 1 and the assembling stereogram of cushion.

Fig. 4 is the side view of Fig. 3.

Fig. 5 is the perspective view of an embodiment of the cushion of the battery modules of Fig. 1.

Fig. 6 is the plan view of the cushion of the battery modules of Fig. 5.

Fig. 7 is the plan view of another embodiment of the cushion of battery modules.

Fig. 8 is the enlarged drawing of part A in Fig. 7, and there is shown with a variations of the extension of the cushion of battery modules.

Fig. 9 is the enlarged drawing of part A in Fig. 7, and there is shown with another variations of the extension of the cushion of battery modules.

Figure 10 is the plan view of the another embodiment of the cushion of battery modules.

Wherein, the reference numerals are as follows:

1 battery, 22 extension

11 shell, 221 recess portion

111 bottom surface, 222 protrusion

112 big 3 heat exchanger plates of face

12 top cover G notches

121 top surface L length directions

13 pole H short transverses

14 explosion-proof valve W width directions

2 vertex cushion P

21 main part H1 height

211 end face H2 height

Specific embodiment

Attached drawing shows the embodiments of the present invention, and will be appreciated that the disclosed embodiments are only that this is practical new The example of type, the utility model can be implemented in a variety of manners, and therefore, detail disclosed herein, which should not be construed, to be limited System, but only as the basis of claim and as the basis of representative for instructing those of ordinary skill in the art with various Mode implements the utility model.

In the description of this specification, it is to be understood that the nouns of locality such as "upper", "lower" described in the embodiment of the present application are With angle shown in the drawings come what is be described, the restriction to the embodiment of the present application should not be construed as.

Fig. 1 is the partial exploded perspective view of the battery modules of the utility model.Fig. 2 is another angle of the battery modules of Fig. 1 The perspective view of degree, wherein heat exchanger plates are not shown.Fig. 3 is the battery of the battery modules of Fig. 1 and the assembling stereogram of cushion.Fig. 4 It is the side view of Fig. 3.Fig. 5 is the perspective view of an embodiment of the cushion of the battery modules of Fig. 1.Fig. 6 is the battery modules of Fig. 5 Cushion plan view.Fig. 7 is the plan view of another embodiment of the cushion of battery modules.Fig. 8 is part A in Fig. 7 Enlarged drawing, there is shown with a variations of the extension of the cushion of battery modules.Fig. 9 is the enlarged drawing of part A in Fig. 7, In show battery modules cushion extension another variation.Figure 10 is the another embodiment of the cushion of battery modules Plan view.

The battery modules of the utility model include: multiple batteries 1, and L is arranged successively along its length；Cushion 2, along length Direction L is set between two neighboring battery 1.Battery modules further include heat exchanger plates 3, are arranged and are fixed on multiple batteries 1 along height Spend the downside of direction H.

Battery 1 is hard shell battery (or being pot battery), including electrode assembly (not shown), shell 11, top cover 12, pole Column 13 and explosion-proof valve 14.Shell 11 includes bottom surface 111 and big face 112, and the inside of shell 11 forms accommodating chamber, with accommodate electrod Component and electrolyte.Electrode assembly includes positive plate, negative electrode tab and the isolation film that positive plate and negative electrode tab is spaced apart.Electrode Component can build up type by positive plate, negative electrode tab and isolation film coiling and molding or by positive plate, negative electrode tab and separating film layer. Positive plate, negative electrode tab include the active material layer of collector and setting on a current collector.

In example shown in the figure, cushion 2 includes main part 21 and extension 22；Extension 22 is from 21 edge of main part The end face 221 of height direction H extends outward.Extension 22 includes recess portion 221 and protrusion 222, and protrusion 222 is in the width direction W is located at the two sides of extension 22 and protrudes outward, recess portion 221 in the width direction W between protrusion 222 and opposite lug 222 It inwardly concaves.Here term " outside " refers to the direction of close main part 21 and " inside " refers to the side far from main part 21 To.

When extruding force of the cushion 2 by L along its length, resistance minimum principle when due to deformation, extension 22 Prior to 221 Deformation Flow of end face of main part 21, the extruding force that cushion 2 is subject to focuses on 221 He of recess portion of extension 22 Protrusion 222,221 stress deformation of recess portion of extension 22 and protrude outward, the protrusion 222 positioned at 221 two sides of recess portion is by recess portion 221 The deformation for squeezing W in the width direction is greater than 2 entirety of cushion and is squeezed along the deformation of height direction H, guarantees that cushion 2 will not surpass Battery 1 is along the correspondence surface (i.e. corresponding bottom surface 111 or top surface 121) of height direction H out, and then will not influence battery 1 along height Spend the planarization on the correspondence surface of direction H.Cushion 2 is usually made of elastic compressible material, can guarantee that each battery 1 has foot With analysis lithium diving when to prevent battery 1 be lithium ion battery, cushion 2 can also play heat-insulated effect for enough expansion spaces.It is slow The main part for rushing pad 2 can be plate-like structure.

There are many set-up modes of extension 22: can be only main part 21 and sets along the end face 211 of the downside of height direction H It is equipped with extension 22.It is also possible to only main part 21 and the end face 211 of the upside of height direction H is provided with extension 22.Such as Fig. 1 To shown in Fig. 7 and Figure 10, can also be main part 21 along the upside of height direction H end face 211 and main part 21 along height The end face 211 of the downside of direction H is provided with extension 22.The setting quantity of extension 22 can for one or more, Fig. 1 extremely In embodiment shown in Fig. 7, main part 21 is set to along the end face 211 of the downside of height direction H and is set to 21 edge of main part The extension 22 of the end face 211 of the upside of height direction H is all two, in the embodiment shown in fig. 10, is set to main part 21 extension 22 along the end face 211 of the downside of height direction H is one, is set to main part 21 along the upside of height direction H End face 211 extension 22 be two.The setting quantity of extension 22 is without being limited thereto, is arranged according to specific needs, extends The set-up mode in portion 22 can also select according to the design needs.

Referring to figs. 1 to Figure 10, main part 21 is provided with extension 22 along the end face 211 of the downside of height direction H, by In the case of the fixed battery modules of the bottom gluings of multiple batteries 1, when extruding of the cushion 2 by L along its length, because extending The recess portion 221 in portion 22 and the presence of protrusion 222 guarantee that the minimum surface of cushion 2, can without departing from the bottom surface 111 of battery 1 Guarantee that the bottom glue-line of battery 1 is smooth, glue-line is uniform, keeps adhesive strength consistent and be bonded securely, and the protrusion of extension 22 222 form notch G along the end face 211 that height direction H is located at downside with main part 21, and notch G corresponds to excessive glue space, bottom gluing When glue can spill at this, in impact force of the battery modules by length direction L, the tangential force that glue-line provides can weaken battery The impact force of mould group.In the case of in the downside of multiple batteries 1, setting heat exchanger plates 3 realize the heat exchange of battery 1, cushion 2 Minimum surface, without departing from the bottom surface 111 of battery 1, and then not will lead to the bottom out-of-flatness of multiple batteries 1 when being squeezed, Therefore heat exchange efficiency will not be reduced, the influence that cushion 2 exchanges the thermal efficiency is excluded.Main part 21 is along the upside of height direction H End face 211 is also equipped with extension 22, because of the recess portion 221 of extension 22 and the presence of protrusion 222, guarantees the highest of cushion 2 The installation of other components of battery modules is not interfered without departing from the top surface 121 of battery 1 in surface.

As shown in Figures 1 to 7, the extension 22 and master that main part 21 is arranged along the end face 211 of the upside of height direction H The extension 22 that body portion 21 is arranged along the end face 211 of the downside of height direction H is with respect to 21 mirror symmetry of main part, even if slow When rushing the reverse installation of pad 2, its use will not be influenced, versatility is improved.

Referring to figure 6 and figure 7, included angle of the main part 21 between the end face of height direction H 211 and extension 22 is not more than 90 °, included angle is right angle in Fig. 6, and included angle is acute angle in Fig. 7.Recess portion 221 is set to deform stream due to cushion 2 is squeezed When dynamic, because Deformation Flow recess portion 221 protrudes outward, recess portion 221 tends to be smooth, the protrusion 222 positioned at 221 two sides of recess portion is easier By recess portion 221 extruding and in the width direction W to two sides deform, make protrusion 222 along height direction H deformation generate displacement very Small, the vertex P of the reliable extension 22 for guaranteeing cushion 2 is (i.e. corresponding along the correspondence surface of height direction H without departing from battery 1 Bottom surface 111 or top surface 121), will not influence battery 1 along the planarization on the correspondence surface of height direction H.

The limitation of mold body, main part 21 are set between the end face of height direction H 211 and extension 22 when due to molding It is equipped with chamfering or fillet, the main part 21 as shown in Fig. 4 to Figure 10 is arranged between the end face of height direction H 211 and extension 22 There is fillet, chamfering is set or fillet also can be avoided the stress concentration of wedge angle.

As shown in Fig. 3 to Fig. 7 and Fig. 9 and Figure 10, the surface of recess portion 221 can be cambered surface, as shown in figure 8, can also be flat Face.When cushion 2 is squeezed, the surface of cambered surface makes recess portion 221 deform and protrude outward, positioned at the protrusion of 221 two sides of recess portion 222 are greater than protrusion 222 because cushion 2 is whole by crowded by W deform to two sides in the width direction the degree of squeezing of recess portion 221 The degree deformed upward or downward along height direction H is pressed, the vertex P of the reliable extension 22 for guaranteeing cushion 2 is without departing from electricity Pond 1 is along the correspondence surface of height direction H.The surface of plane make recess portion 221 molding it is simpler, and reduce difficulty of processing, reduce at This.

As shown in Fig. 3 to Fig. 8 and Figure 10, the outer surface of protrusion 222 can be cambered surface, as shown in figure 9, can also be plane. For being set to main part 21 along the extension 22 of the end face 211 of the downside of height direction H, the outer surface of plane makes protrusion 222 flatnesses that contact with battery modules bottom are more preferable, although the outer surface of cambered surface contacts protrusion 222 with battery modules bottom Area is small, and contact flatness is not so good as the outer surface of plane, but the outer surface of cambered surface is conducive to guidance glue when bottom is coated with glue and overflows Stream.

As shown in figure 8, the surface of recess portion 221 is plane, fillet, protrusion 222 are provided between protrusion 222 and recess portion 221 The phenomenon that having may also set up chamfering between recess portion 221, having caused stress to be concentrated to prevent size change dramatically improves cushion 2 service life.

Referring to Fig. 7, recess portion 221 is less than protrusion 222 from main part 21 along height along the height H1 that height direction H inwardly concaves The height H2 outstanding of end face 211 of direction H.It is outside along height direction H when squeezing that the presence of this difference in height meets recess portion 221 Without departing from protrusion 222, without departing from battery 1 along the correspondence surface of height direction H when prominent, and it can guarantee protrusion intensity.

In design and installation cushion 2, make the vertex P of the protrusion 222 of the extension 22 of cushion 2 without departing from battery 1 Along the correspondence surface (corresponding to bottom surface 111 or top surface 121) of height direction H.

In conclusion the extruding force that cushion 2 is subject to, which focuses on, prolongs when extruding force of the cushion 2 by L along its length The recess portion 221 of extending portion 22 and protrusion 222,221 stress deformation of recess portion of extension 22 and protrude outward, be located at 221 two sides of recess portion Protrusion 222 squeezed W in the width direction by recess portion 221 and deform and be greater than cushion 2 and be integrally squeezed along the change of height direction H Shape guarantees that cushion 2, along the correspondence surface of height direction H, and then will not influence battery 1 along height direction H without departing from battery 1 Correspondence surface planarization.

Detailed description describes multiple exemplary embodiments above, but is not intended to be limited to clearly disclosed combination herein. Therefore, unless otherwise indicated, various features disclosed herein can be combined and be formed and not shown for clarity and Multiple other combinations out.

The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.

Claims (14)

1. a kind of battery modules, comprising:

Multiple batteries (1), (L) is arranged successively along its length；

Cushion (2), (L) is set between two neighboring battery (1) along its length；

Cushion (2) includes:

Main part (21)；

Extension (22) is extended outward from main part (21) along the end face (211) of short transverse (H), and extension (22) includes Recess portion (221) and protrusion (222), protrusion (222) are located at the two sides of extension (22) and protrude outward in the width direction (W), Recess portion (221) is located between protrusion (222) and opposite lug (222) inwardly concaves in the width direction (W).

2. battery modules according to claim 1, which is characterized in that the surface of recess portion (221) is cambered surface.

3. battery modules according to claim 1, which is characterized in that the surface of recess portion (221) is plane.

4. battery modules according to claim 1, which is characterized in that be provided with down between protrusion (222) and recess portion (221) Angle or fillet.

5. battery modules according to claim 1, which is characterized in that main part (21) is along the end face of short transverse (H) (211) angle (φ) between extension (22) is not more than 90 °.

6. battery modules according to claim 1 or 5, which is characterized in that main part (21) is along the end face of short transverse (H) (211) chamfering or fillet are provided between extension (22).

7. battery modules according to claim 1, which is characterized in that recess portion (221) is inwardly concaved along short transverse (H) Highly (H1) is less than protrusion (222) from main part (21) along end face (211) height outstanding (H2) of short transverse (H).

8. battery modules according to claim 1, which is characterized in that the outer surface of protrusion (222) is cambered surface.

9. according to battery modules described in claim 1, which is characterized in that extension (22) is set to main part (21) along height side To the end face (211) of the downside of (H).

10. according to battery modules described in claim 1, which is characterized in that extension (22) is set to main part (21) along height The end face (211) of the upside in direction (H).

11. according to battery modules described in claim 1, which is characterized in that

Main part (21) is along the end face (211) of the upside of short transverse (H) and main part (21) along the downside of short transverse (H) End face (211) is provided with extension (22).

12. according to the battery modules described in claim 11, which is characterized in that

The extension (22) and main part (21) edge that main part (21) is arranged along the end face (211) of the upside of short transverse (H) The extension (22) being arranged at the end face (211) of the downside of short transverse (H) is with respect to main part (21) mirror symmetry.

13. battery modules according to claim 9, which is characterized in that battery modules further include:

Heat exchanger plates (3) are arranged and are fixed on multiple batteries (1) along the downside of short transverse (H).

14. battery modules according to claim 1, which is characterized in that the vertex (P) of protrusion (222) is without departing from battery (1) Along the correspondence surface of short transverse (H).