CN206673012U - Battery modules - Google Patents

Abstract

The utility model discloses a kind of battery modules, the battery modules can take into account lug connection reliability and cell gradient utilize and including：Element cell, the element cell have battery body and lug, and the lug stretches out from the battery body；Battery frame, the battery frame have frame body and supporting plate, and the frame body encapsulates the battery body, and the supporting plate is adjacent with the lug；Clamping plate, the clamping plate is fixed on the supporting plate, and the lug clamping space for accommodating the lug is formed with the supporting plate；Lug connecting elements, the lug connecting elements form conductive contact in the lug clamping space with the lug；Resilient fastening member, the resilient fastening member be fixed in the lug clamping space it is at least one in the supporting plate and the clamping plate, and to the conductive contact apply elastic holding force.

Description

Battery modules

Technical field

It the utility model is related to the lug interconnection technique of battery, more particularly to battery modules.

Background technology

New-energy automobile usually requires to use battery, such as lithium ion battery.Also, apply the electricity in new-energy automobile Pond is typically to be presented in the form of battery modules.

In battery modules, lug generally use bolt connecting mode or welding manner and the lug connecting elements phase of battery Even.

Wherein, bolt connecting mode is difficult to ensure that the reliability of lug connection.That is, bolt may with battery modules by To vibrations and loosen, so as to cause lug virtual connection, and then battery is caused due to local temperature rise that lug virtual connection triggers Safety failure occurs for module.

And although welding manner is unfavorable for cell gradient utilization with the reliability higher than bolt connecting mode.That is, The lug for employing welding manner is difficult to dismantle without breakage.

It can be seen that existing lug connected mode can not take into account reliability and gradient utilizes.Moreover, bolt mode and welding side Formula, even if bolt mode is used in combination with welding manner, can not similarly take into account reliability and gradient profit without complementarity With.This is primarily due to, and bolt mode is not avoided that destruction of the welding manner to lug, so as to improve gradient utilization.

Utility model content

The battery that one embodiment of the present utility model provides the reliability for taking into account lug connection and cell gradient utilizes Module, the battery modules include：

Element cell, the element cell have battery body and lug, and the lug stretches out from the battery body；

Battery frame, the battery frame have frame body and supporting plate, and the frame body encapsulates the battery body, the branch Fagging is adjacent with the lug；

Clamping plate, the clamping plate is fixed on the supporting plate, and the pole for accommodating the lug is formed with the supporting plate Ear clamping space；

Lug connecting elements, the lug connecting elements form conduction with the lug in the lug clamping space and connect Touch；

Resilient fastening member, the resilient fastening member are fixed on the supporting plate and institute in the lug clamping space State it is at least one in clamping plate, and to the conductive contact apply elastic holding force.

Alternatively, the flexible body of the resilient fastening member and the latch positioned at the edge of the elastomer, and And at least one neck having with the latch clamping in the supporting plate and the clamping plate.

Alternatively, the fit tolerance between the neck and the latch makes the elastomer have in one direction pre- Determine the floating free degree of deviation range.

Alternatively, the stretching direction for being oriented parallel to the lug of the floating free degree.

Alternatively, the neck have parallel to the lug stretching direction width, the latch have parallel to The thickness in the stretching direction of the lug, and the width of the neck is more than the thickness of the latch.

Alternatively, the elastomer, which is included in, is extruded and produces the elastic holding force's in the lug clamping space Protrusion and positioned at the edge of a wing portion of the edge of the protrusion, the latch connects the edge of a wing portion.

Alternatively, the elastomer is flexible fingertip.

Alternatively, the clamping plate has flat part and the stage portion positioned at the edge of the flat part, wherein, institute State that stage portion is fixed on the supporting plate and to form the lug clamping empty for support between the flat part and the supporting plate Between.

Alternatively, the stage portion is fixed on the supporting plate by screw.

Based on the above embodiments, lug can be in lug grasping part with the side of conductive contact with lug connecting elements Formula realizes connection, and resilient fastening member can be in lug grasping part to the conduction between lug and lug connecting elements Contact applies elastic holding force.Wherein, the resilient fastening member for applying elastic holding force may insure that lug is connected structure with lug Connection reliability between part, and the connected mode of the conductive contact between lug and lug connecting elements is without prejudice to lug Dismantled without breakage.So as to which the above embodiments can take into account the reliability of lug connection and cell gradient utilizes.

Brief description of the drawings

The following drawings only does schematic illustration and explanation to the utility model, does not limit the scope of the utility model.

Fig. 1 is the exemplary overall schematic of the assembling structure of the battery modules in one embodiment；

Fig. 2 is that Fig. 1 part puts the big figure of signal；

Fig. 3 is the exemplary overall schematic of the decomposition texture of the battery modules in embodiment as shown in Figure 1；

Fig. 4 is Fig. 3 close-up schematic view；

Fig. 5 a and Fig. 5 b are the part sectioned view of the battery modules in embodiment as shown in Figure 1；

Fig. 6 is the partial sectional view of the monocell encapsulation included in part sectioned view shown in Fig. 5 a and Fig. 5 b；

Fig. 7 is the structural representation for the resilient fastening member that the battery modules in embodiment as shown in Figure 1 include；

Fig. 8 a and Fig. 8 b are the connected mode signal of the lug connecting elements of the battery modules in embodiment as shown in Figure 1 Figure；

Fig. 9 a to Fig. 9 e are the assembling process schematic diagram of the battery modules in embodiment as shown in Figure 1.

Label declaration

10 battery modules

11 element cells

110 battery bodies

111 first lugs

112 second lugs

12 battery frames

120 frame bodies

13 supporting plates

130 screw holes

14 clamping plates

140 lug clamping spaces

141 flat parts

142 stage portions

143 screw holes

15 lug connecting elements

Portion built in 151

152 external portions

153 buffer parts

16 resilient fastening members

160 necks

161 elastomers

161a protrusions

161b edges of a wing portion

162 latches

17 lugs draw component

18 lug bridge members

181 rigid portions

182 flexible parts

Embodiment

In order to which the technical characteristic of utility model, purpose and effect are more clearly understood, now control illustrates this The embodiment of utility model, in the various figures identical label represent identical part.

Herein, " schematic " expression " serving as example, example or explanation ", will should not be described herein as " showing Any diagram, the embodiment of meaning property " are construed to a kind of preferred or more advantageous technical scheme.

To make simplified form, only schematically show and the utility model relevant portion, and not generation in each figure Its practical structures as product of table.In addition, so that simplified form readily appreciates, there is identical structure or function in some figures Part, only symbolically depict one of those, or only marked one of those.

Herein, " first ", " second " etc. are only used for mutual differentiation, rather than represent significance level and order and Existing premise etc. each other.

Fig. 1 to Fig. 4 is referred to, in one embodiment, battery modules 10 include multiple element cells 11 and for sealing Fill multiple battery frames 12 of each unit battery 11.That is, battery modules 10 have with the quantity identical battery frame 12 of element cell 11, Each battery frame 12 encapsulates a corresponding element cell 11.

In Fig. 1 into Fig. 4, show multiple battery units 11 and encapsulate the battery frame 12 of battery unit 11, and it is multiple It is encapsulated in battery unit 12 in battery frame 12 stacked arrangement in a thickness direction.It is understood that such stacked arrangement Structure belongs to a kind of application example, is not offered as to the battery unit 11 in the embodiment and encapsulates the battery frame of battery unit 11 12 particular number makes special restriction.I.e., in this embodiment, the battery frame of battery unit 11 and encapsulation battery unit 11 12 quantity can be one or more than one any amount.

Each element cell 11 has battery body 110 and the first lug 111 stretched out from battery body 110 and the Two lugs 112.Wherein, the first lug 111 and the second lug 112 have been not shown due to being blocked in fig. 1 and 2, also, For simplification view, the first lug 111 and the second lug 112 of an element cell 11 are only labelled with figs. 3 and 4.

Correspondingly, each battery frame 12 have encapsulation corresponding to element cell 11 battery body 110 frame body 120, And the supporting plate 13 stretched out in the opening position adjacent with the first lug 111 and the second lug 112 from frame body 120.

In this embodiment, the first lug 111 and the second lug 112 can be flexible that correspondingly, supporting plate 13 is carried The strength support that the support of confession can be understood as the first flexible lug 111 and the second lug 112 and provide.

Also, in this embodiment, the first lug 111 and the second lug 112 are stretched from the same side of battery body 110 Go out, correspondingly, the frame body 120 of battery frame 12 be located at the same side of the first lug 111 and the second lug 112 and respectively with First lug 111 and adjacent two supporting plates 13 of the second lug 112.

Referring also to Fig. 1 to Fig. 4 and in combination with Fig. 5 a and Fig. 5 b and Fig. 6, Fig. 5 a be Fig. 2 in left part to the right The profile of projection, Fig. 5 b are the profile that the right part in Fig. 2 projects to the right, and Fig. 6 is using most right in Fig. 5 a and Fig. 5 b The profile that the element cell encapsulation inductive generalization of side obtains.In this embodiment, battery modules 10 also include clamping plate 14.Clamping plate 14 is fixed on supporting plate 13 and the lug for accommodating the first lug 111 or the second lug 112 is formed with supporting plate 13 Clamping space 140."or" described here refers to：Be fixed on the clamping plate 14 of the supporting plate 13 adjacent with the first lug 111 with In the lug clamping space 140 that the supporting plate 13 is formed, receiving is the first lug 111；And it is fixed on and the phase of the first lug 111 In the lug clamping space 140 that the clamping plate 14 of adjacent supporting plate 13 is formed with the supporting plate 13, receiving is then the second lug 112。

It can be clearly seen that clamping plate 14 has flat part 141 and positioned at the edge of flat part 141 from Fig. 4 Stage portion 142, stage portion 142 be fixed on supporting plate 13 and between flat part 141 and supporting plate 13 support formed it is above-mentioned Lug clamping space 140.That is, stage portion 142 from flat part 141 towards the height t0 of the side rat of supporting plate 13, etc. In or be substantially equal to formed lug clamping space 140 thickness.Wherein, the fixed form of stage portion 142 and supporting plate 13, can With from screw connecting mode.It can be clearly seen that stage portion 142 and supporting plate 13 are respectively formed with for screw from Fig. 4 The screw hole 143 and 130 passed through.

Referring again to Fig. 1 to Fig. 4 and in combination with Fig. 5 a and Fig. 5 b and Fig. 6, in this embodiment, battery modules 10 Also include lug connecting elements 15.First lug 111 of the lug connecting elements 15 in lug clamping space 140 with wherein accommodating Or second lug 112 formed conductive contact.

It is understood that it described herein is leading for lug connecting elements 15 and the first lug 111 or the second lug 112 The position of electrical contact is located in lug clamping space 140, and is not to limit lug connecting elements 15 to be located at lug card on the whole Hold in space 140.It can be clearly seen that lug connecting elements 15, which has, stretches to lug from Fig. 5 a and Fig. 5 b and Fig. 6 In clamping space 140 the built-in portion 151 of conductive contact is formed with the first lug 111 or the second lug 112 and in lug clamping The external portion 152 in portion 151 built in being connected outside space 140.That is, lug connecting elements 15 only some can be located at lug clamping In space 140.

Moreover, in this embodiment, the first lug 111 of the same polarity of two neighboring element cell 11 or the second lug 112 can be multiplexed a lug connecting elements 15, to realize parallel connection, i.e. lug connecting elements 15 has the He of portion 151 built in two pairs External portion 152, it is respectively used to be connected with the first lug 111 of the same polarity of two neighboring element cell 11 or the second lug 112； And the external portion 152 of two centerings is connected for example, by buffer parts 153 such as soft copper rows.Also, when battery modules 10 are given a shock When, the first lug 111 or the second lug 112 of the same polarity of two neighboring element cell 11 may be close to each other or mutual Shaken on remote direction, and above-mentioned buffer part 153 can be then absorbed by rocking caused stress by deformation, to keep away Exempt from the stress be passed to the lug 111 of lug connecting elements 15 and first or the second lug 112 formed conductive contact opening position, And destroy conductive contact.

Or it can also be expected that each form a lug connecting elements 15 to built-in portion 151 and external portion 152, and And two for being respectively used to be connected with the first lug 111 of the same polarity of two neighboring element cell 11 or the second lug 112 Individual lug connecting elements 15, two can be realized by connecting the buffer part 153 such as being arranged soft copper between mutual external portion 152 Individual lug connecting elements 15 it is integrated.

Fig. 4, Fig. 5 a and Fig. 5 b and Fig. 6 are referred to, in this embodiment, battery modules 10 also include resilient fastening member 16.Resilient fastening member 16 is in a manner of the above-mentioned conductive contact to being formed in lug clamping space 140 applies elastic holding force It is fixed on supporting plate 13 and clamping plate 14.In other words, resilient fastening member 16 is fixed on supporting plate in lug clamping space 140 13 and clamping plate 14 in it is at least one, and elastic holding force is applied to foregoing conductive contact.

Specifically, Fig. 7 please is combined while referring to Fig. 4, Fig. 5 a and Fig. 5 b and Fig. 6, resilient fastening member 16 has Elastomer 161 (such as flexible fingertip) and the latch 162 positioned at the edge of elastomer 161, elastomer 161 are included in lug It is extruded in clamping space 140 and produces the protrusion 161a of elastic holding force and positioned at protrusion 161a edge Edge of a wing portion 161b, latch 162 connect edge of a wing portion 161b.Correspondingly, as can be seen that branch from Fig. 4, Fig. 5 a and Fig. 5 b and Fig. 6 Fagging 13 and clamping plate 14 (flat part 141) are respectively provided with the neck 160 with the clamping of latch 162.So as to, using latch 162 with The clamping engagement of neck 160, elastomer 161 can be made to be disposed in the surfaces opposite to each other of supporting plate 13 and clamping plate 14, That is, the inner surface of the opposite sides in lug clamping space 140.

So as to which the first lug 111 and the second lug 112 can be with lug connecting elements 15 in lug grasping part 140 It is interior that connection is realized in a manner of conductive contact, and resilient fastening member 16 can be in lug grasping part 140 to the first pole Connection between the lug 112 of ear 111 and second and lug connecting elements 15 applies elastic holding force.On the one hand, apply elasticity to protect The resilient fastening member 16 of holding force may insure the company between the first lug 111 and the second lug 112 and lug connecting elements 15 Connect reliability, and the connected mode of the conductive contact between the first lug 111 and the second lug 112 and lug connecting elements 15 Dismantled without prejudice to the first lug 111 and the second lug 112 without breakage.Thus, the embodiment can take into account lug connection can Utilized by property and cell gradient.

It should be noted that resilient fastening member 16 is fixed on supporting plate 13 and clamping plate 14, makes supporting plate 13 and clamping The surfaces opposite to each other of plate 14 arrange elastomer 161, are to form the first lug 111 of conductive contact and lug company The built-in portion 151 of connection member 15 forms the second lug 112 of conductive contact and the built-in portion 151 of lug connecting elements 15 Both sides apply elastic holding force.If but in fact, only from the first lug 111 and lug connecting elements 15 for forming conductive contact Built-in portion 151 or formed conductive contact the second lug 112 and lug connecting elements 15 built-in portion 151 side apply Elastic holding force, it can likewise ensure that the connection between the first lug 111 and the second lug 112 and lug connecting elements 15 is reliable Property.That is, resilient fastening member 16 can also be elastically kept with applying to the above-mentioned conductive contact formed in lug clamping space 140 Be fixed in supporting plate 13 and clamping plate 14 one of the mode of power.

It is thus understood that the reliability and the technique effect that utilizes of cell gradient of lug connection are taken into account in order to reach, bullet Property fastening member 16 can consolidate in a manner of the above-mentioned conductive contact to being formed in lug clamping space 140 applies elastic holding force Due at least one in supporting plate 13 and clamping plate 14, rather than must be tight in supporting plate 13 and the fixed elasticity of clamping plate 14 Gu component 16.

In addition, (such as the side that the first lug 111 or the second lug 112 may be moved in one direction of neck 160 To) on can be latch 162 provide skew the free degree.Because when battery modules 10 are given a shock and caused by shaking When stress is transmitted by lug connecting elements, conductive contact is formed with lug connecting elements 15 in lug clamping space 140 First lug 111 or the second lug 112 may its stretch out on direction with lug connecting elements 15 and together with rock, now, If the hard constraints latch 162 in this direction of neck 160, may result in elastomer 161 and is connected with the lug being moved Relative displacement is produced between the lug 111 of component 15 and first or the second lug 112 and thus causes elastomer 161 to deviate from The optimum position for implementing to elastically keep to conductive contact, effect is elastically kept to what conductive contact was implemented so as to weaken.

Specifically, the arragement direction and the first lug 111 and the second lug 112 of the bearing of trend of neck 160 and latch 162 Stretching direction it is vertical (can also actually replace with tilt at any angle intersecting), and neck 160 width t1 (parallel to The stretching direction of first lug 111) it is more than the thickness t2 of latch 162 (parallel to the stretching direction of the first lug 111).

So as to, when battery modules 10 are given a shock and stress caused by shaking is transmitted by lug connecting elements, The first lug 111 of conductive contact is formed with lug connecting elements 15 or the second lug 112 may in lug clamping space 140 Its stretch out on direction with lug connecting elements 15 and together with rock, now, neck 160 is provided for latch 162 in this direction The skew free degree can allow elastomer 161 and the lug 111 or the second of lug connecting elements 15 and first being moved Lug 112 is servo-actuated.That is, the fit tolerance between neck 160 and latch 162 makes (such as the first pole in one direction of elastomer 161 The stretching direction of ear 111) on the floating free degree with predetermined migration scope is provided, thus avoid elastomer 161 from deviating from pair Conductive contact implements the optimum position elastically kept, so as to ensure that the effect that elastically keeps that conductive contact is implemented will not be cut It is weak.

It can be seen that in the above-described embodiment, the first lug 111 and the second lug 112 respectively can with lug connecting elements 15 To realize connection in the corresponding lug grasping part 140 in a manner of conductive contact, and resilient fastening member 16 can be Elastic holding force is applied to conductive contact in lug grasping part 140.Wherein, the resilient fastening member 16 of elastic holding force is applied It may insure the connection reliability between the first lug 111 and the second lug 112 and lug connecting elements 15, and the first lug 111 and the connected mode of the second conductive contact between lug 112 and lug connecting elements 15 dismantled without prejudice to lug without breakage. So as to which the above embodiments can take into account the reliability of lug connection and cell gradient utilizes.

It is, of course, understood that compared to a pair of lugs are using the routine side of screw connecting mode or welding manner Formula, at least one scheme using above-described embodiment in the first lug 111 and the second lug 112, which can produce, to be improved lug and connects The reliability that connects and the effect that cell gradient utilizes difficulty is reduced, therefore, although the above embodiments are to the first lug 111 and the Two lugs 112 implement same improvement, but are not meant to necessary simultaneously equal to the first lug 111 and the second lug 112 Implement above-mentioned improvement.

In addition, it can be seen that from Fig. 1 to Fig. 4 and in Fig. 5 a and Fig. 5 b in the above-described embodiment, multiple lugs connections A part in component 15 is further connected with lug extraction component 17 in external portion 152, another part then connects in external portion 152 It is connected to lug bridge member 18.

Wherein, lug is drawn component 17 and may be considered as the offer external terminal of battery modules 10.Can from Fig. 5 a Go out, the first lug 111 of lug connecting elements 15 and two element cells 11 that a lug draws the connection of component 17 forms electricity Contact, another lug draw the second lug 112 of lug connecting elements 15 and another two element cell 11 that component 17 connects Form electrical contact.So as to which two lugs draw component 17 and provide opposite polarity external terminal respectively.

And to be then the element cell 11 for realizing in battery modules 10 connect lug bridge member 18 that (lug at bridge joint both ends connects The lug opposite polarity that connection member 15 connects respectively) or (lug that the lug connecting elements 15 at bridge joint both ends connects respectively in parallel Polarity is identical).As can be seen that the lug connecting elements 15 and two unit electricity of the connection of the one end of lug bridge member 18 from Fig. 5 a Second lug 112 in pond 11 forms electrical contact, the lug connecting elements 15 and another two of the other end connection of lug bridge member 118 First lug 111 of individual element cell 11 forms electrical contact.So as to which lug bridge member 118 realizes series connection.Certainly, if pole The lug connecting elements 15 of the both ends of ear bridge member 18 connection is connected with the lug of identical polar, then can realize parallel connection. That is lug bridge member 18 realizes serial or parallel connection, the lug pole that the lug connecting elements 15 depending on its both ends connects Property.

That is, lug connecting elements 15 can be by drawing component 17 to be formed such as Fig. 8 a institutes in the external connecting tab of portion 152 The external form shown, and/or, lug connecting elements 15 can be formed as schemed in the external connecting tab bridge member 18 of portion 152 Inscribed form shown in 8b.

It is understood that according to different use demands, lug draws the quantity of component 17 and lug bridge member 18 Can arbitrarily it be selected with position, it is not limited to this kind of mode shown in Fig. 1 to Fig. 4 and Fig. 5 a and Fig. 5 b.

Also, as shown in Figure 8 b, the consideration similar with the buffer part 153 being mentioned above, lug bridge member 18 can have There are two rigid portions 181 for connecting tab connecting elements 15 and such as soft copper that is engaged between two rigid portions 181 The flexible parts 182 such as row.

In addition, the assembly technology needed for the lug connected mode provided in above-described embodiment is also very easy.For each Element cell 11, assembly technology can be as shown in Fig. 9 a to Fig. 9 e：

Step1：Referring to Fig. 9 a, resilient fastening member 16 is installed in the supporting plate 13 of battery frame 12, i.e. by elastic fastening structure The latch 162 of part 16 is inserted into the neck 160 of supporting plate 13.

Step2：Referring to Fig. 9 b, element cell 11, which is put, to battery frame 12 encapsulates, the battery body 110 of element cell 11 In the frame body 120 of battery frame 12, and, the first lug 111 and the second lug 112 for making element cell 11 are respectively placed in At corresponding supporting plate 13 and contact is installed in the resilient fastening member 16 of corresponding supporting plate 13.

Step3：Referring to Fig. 9 c, the lug connecting elements 15 of external form and inscribed form is positioned over element cell 11 At first lug 111 and the second lug 112, make the lug 111 of built-in portion 151 and first and the second lug of lug connecting elements 15 112 form conductive contact.

Step4：Referring to Fig. 9 d, resilient fastening member 16 is installed in the flat part 141 of clamping plate 14, i.e. by elastic fastening The latch 162 of component 16 is inserted into the neck 160 of flat part 141.

Step5：Referring to Fig. 9 e, the clamping plate 14 for being equiped with resilient fastening member 16 is installed up to the supporting plate of battery frame 12 13 and the side that will be installed in where the resilient fastening member 16 of clamping plate 14 towards supporting plate 13, make to be installed in clamping plate 14 Resilient fastening member 16 with the resilient fastening member 16 for being installed in supporting plate 13 that it is faced to lug connecting elements 15 and The conductive contact formed between one lug 111 or the second lug 112 applies elastic holding force.

The a series of tool described in detail only for feasibility embodiment of the present utility model of those listed above Body illustrate, and and be not used to limit the scope of protection of the utility model, it is all without departing from the utility model skill spirit made etc. Embodiment or change are imitated, such as the combination, segmentation or repetition of feature, should be included within the scope of protection of the utility model.

Claims (9)

1. a kind of battery modules (10), it is characterised in that the battery modules (10) include：

Element cell (11), the element cell (11) have battery body (110) and a lug (111), the lug (111) from The battery body (110) is stretched out；

Battery frame (12), the battery frame (12) have frame body (120) and supporting plate (13), frame body (120) encapsulation The battery body (110), the supporting plate (13) are adjacent with the lug (111)；

Clamping plate (14), the clamping plate (14) is fixed on the supporting plate (13), and is formed and accommodated with the supporting plate (13) The lug clamping space (140) of the lug (111)；

Lug connecting elements (15), the lug connecting elements (15) in the lug clamping space (140) with the lug (111) conductive contact is formed；

Resilient fastening member (16), the resilient fastening member (16) are fixed on described in the lug clamping space (140) It is at least one in supporting plate (13) and the clamping plate (14), and elastic holding force is applied to the conductive contact.

2. battery modules according to claim 1, it is characterised in that the flexible body of the resilient fastening member (16) And the latch (162) positioned at the edge of the elastomer (161), also, the supporting plate (13) and the clamping (161) At least one neck (160) having with the latch (162) clamping in plate (14).

3. battery modules (10) according to claim 2, it is characterised in that the neck (160) and the latch (162) Between fit tolerance make the elastomer (161) in one direction have predetermined migration scope the floating free degree.

4. battery modules (10) according to claim 3, it is characterised in that the floating free degree is oriented parallel to institute State the stretching direction of lug (111).

5. battery modules (10) according to claim 4, it is characterised in that the neck (160) has parallel to described The width in the stretching direction of lug (111), the latch (162) have the thickness in the stretching direction parallel to the lug (111) Degree, and the width of the neck (160) is more than the thickness of the latch (162).

6. battery modules (10) according to claim 2, it is characterised in that the elastomer (161) is included in the pole It is extruded in ear clamping space (140) and produces the protrusion (161a) of the elastic holding force and positioned at the protrusion The edge of a wing portion (161b) of the edge of (161a), the latch (162) connect the edge of a wing portion (161b).

7. the battery modules (10) according to any one of claim 2 to 6, it is characterised in that the elastomer (161) is Flexible fingertip.

8. battery modules (10) according to any one of claim 1 to 6, it is characterised in that clamping plate (14) tool There are flat part (141) and the stage portion (142) positioned at the edge of the flat part (141), wherein, the stage portion (142) it is fixed on the supporting plate (13) and is supported between the flat part (141) and the supporting plate (13) and forms institute State lug clamping space (140).

9. battery modules (10) according to claim 8, it is characterised in that the stage portion (142) passes through screw (143) It is fixed on the supporting plate (13).