CN209104249U - Battery modules - Google Patents

Abstract

The utility model provides a kind of battery modules comprising the first battery, the second battery and confluence component.Confluence component is set on the upside of the first battery and the second battery and including first part, second part and Part III, and first part is connected to the first battery, and second part is connected to the second battery, and Part III connects first part and second part.Along short transverse, the position of Part III is higher than first part and second part；The upper surface of Part III is plane and the heat exchange component for being used to support the battery modules.In the course of work of battery modules, the heat to converge on component can be absorbed by heat exchange component, to reduce the temperature of confluence component, reduced the heat of conduction to the first battery and the second battery, avoided battery temperature rise excessively high, improve the performance of battery.

Description

Battery modules

Technical field

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

Background technique

Battery modules generally include multiple batteries and confluence component, and confluence component is connected to the multiple battery to realize The electrical connection of the multiple battery.However, the sectional area of confluence component is smaller, it is easy to generate heat in the battery modules course of work Aggregation in the heat transfer to battery converged on component, may result in that battery temperature rise is excessively high, influence the performance of secondary cell.

Utility model content

In view of the problems in the background art, the purpose of this utility model is to provide a kind of battery modules, can mention The radiating efficiency of high confluence component, avoids battery temperature rise excessively high, improves the performance of battery.

To achieve the goals above, the utility model provides a kind of battery modules comprising the first battery, the second battery With confluence component.Confluence component is set on the upside of the first battery and the second battery and including first part, second part and third Part, first part are connected to the first battery, and second part is connected to the second battery, and Part III connects first part and second Part.Along short transverse, the position of Part III is higher than first part and second part；The upper surface of Part III be plane simultaneously It is used to support the heat exchange component of the battery modules.

Part III is the plate perpendicular to short transverse.

Confluence component further includes Part IV and Part V, Part IV from the close second part of first part one End upwardly extends and is connected to Part III, and Part V upwardly extends and connects from one end of the close first part of second part It is connected to Part III.

Part IV and Part V are connected to the lower surface of Part III, and the both ends of Part III along longitudinal direction surpass respectively Part IV and Part V out.

Confluence component further includes Part VI, Part VII and Part VIII, and Part VI is set to the first battery and the Between a part, Part VII is set between the second battery and second part, and Part VIII connects Part VI and the 7th Point.Part VIII is set to the downside of Part III.

Confluence component further includes Part IX and Part X, Part IX from the close Part VII of Part VI one End extends downwardly and is connected to Part VIII, and Part X extends downwardly simultaneously from one end of the close Part VI of Part VII It is connected to Part VIII.

Transversely, one end of Part VI is connected with one end of first part, one end of Part VII and second part One end is connected.

The component that converges further includes protrusion, is extended downwardly from the lower surface of Part III.

First part and second part are all provided with fluted.

Confluence component is integral type component.

The beneficial effects of the utility model are as follows: in application, the position of Part III is higher than first part and second Point, it in this way can be to avoid other component interferences of heat exchange component and battery modules.In the course of work of battery modules, converge structure Heat on part can be absorbed by heat exchange component, to reduce the temperature of confluence component, reduce conduction to the first battery and the second electricity The heat in pond avoids battery temperature rise excessively high, improves the performance of battery.The upper surface of Part III is plane, so Part III There is biggish contact area between heat exchange component, to improve heat transfer efficiency；Meanwhile plane can also effectively support heat exchange Component increases connection area, improves uniform force, reduces the probability of heat exchange component and Part III separation.

Detailed description of the invention

Fig. 1 is the schematic diagram according to the battery modules of the utility model.

Fig. 2 to Fig. 5 is the schematic diagram according to the different embodiments of the confluence component of the battery modules of the utility model.

Another schematic diagram for the confluence component that Fig. 6 is Fig. 5.

Wherein, the reference numerals are as follows:

1 first battery, 39 Part IX

2 second battery 3A Part X

3 confluence component 3B protrusions

31 first part's 3C grooves

32 second part, 4 heat exchange component

33 Part III, 5 end plate

34 Part IV, 6 side plate

35 Part V T electrode terminals

36 Part VI X are lateral

37 Part VII Y are longitudinal

38 Part VIII Z height directions

Specific embodiment

It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, and It is not used in restriction the application.

In the description of the present application unless specifically defined or limited otherwise, term " first ", " second ", " third " are only For descriptive purposes, it is not understood to indicate or imply relative importance；Term " multiple " refers to two or more； Unless otherwise prescribed or illustrate, term " connection ", " fixation " etc. shall be understood in a broad sense, for example, " connection " can be fixed company It connects, may be a detachable connection, or be integrally connected, or electrical connection or signal connection；" connection " can be directly connected, It can also be indirectly connected through an intermediary.For the ordinary skill in the art, can understand as the case may be The concrete meaning of above-mentioned term in this application.

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.In addition, within a context, It is also to be appreciated that can not only directly connect when mentioning an element and being connected to another element "upper" or "lower" Connect another element "upper" perhaps "lower" can also be indirectly coupled to by intermediary element another element "upper" or "lower".The application is described in further detail below by specific embodiment and in conjunction with attached drawing.

Referring to Fig.1, the battery modules of the application include battery, confluence component 3, heat exchange component 4, end plate 5 and side plate 6.

Battery can be prismatic lithium ion battery, and have two electrode terminal T outstanding, i.e. positive terminal at top And negative terminal.Battery is multiple and Y is arranged successively along longitudinal direction.End plate 5 is two and is respectively arranged at the multiple battery edge The both ends of longitudinal Y, side plate 6 is two and is respectively arranged at the two sides of the multiple battery transversely X, and end plate 5 and side plate 6 weld Together and form the frame of rectangle.The multiple battery can be fixed on the frame by modes such as bondings.

Confluence component 3 is multiple and connects the multiple battery.Specifically, the component 3 that respectively converges is connected to the electrode of battery Terminal T, so that the multiple battery be linked together with series, parallel or series-parallel mode.

Illustrate the battery of the application by taking a confluence component 3 of two batteries and the described two batteries of connection as an example below Mould group.

Specifically, the multiple battery includes the first battery 1 and the second battery 2, and confluence component 3 is set to the first battery 1 With 2 upside of the second battery and the first battery 1 of connection and the second battery 2.

The component 3 that converges includes first part 31, second part 32 and Part III 33, and first part 31 is connected to the first electricity Pond 1, second part 32 are connected to the second battery 2, and Part III 33 connects first part 31 and second part 32.

In one embodiment, the first battery 1 and the second battery 2 are one.First part 31 can be fixed by welding to The positive terminal of first battery 1, second part 32 are fixed by welding to the negative terminal of the second battery 2, and confluence component 3 is by the One battery 1 and the series connection of the second battery 2.

In another embodiment, the first battery 1 can be multiple and be disposed adjacent, and first part 31 is welded in the multiple the The positive terminal of one battery 1, so that the multiple first battery 1 is in parallel.Accordingly, the second battery 2 can be multiple and adjacent Setting, second part 32 are welded in the negative terminal of the multiple second battery 2, so that the multiple second battery 1 is in parallel. The component 3 that converges is series-parallel by the multiple first battery 1 and the multiple second battery 2.

Along short transverse Z, the position of Part III 33 is higher than first part 31 and second part 32.Part III 33 it is upper Surface is plane and the heat exchange component 4 for supporting the battery modules.

Heat exchange component 4 can be coldplate, and the coolant liquid in coldplate is connected to the cooling system outside battery modules.It is cooling Liquid is in coldplate internal circulation flow, so as to absorb the heat of confluence component 3.Heat exchange component 4 can be adhered to by heat-conducting glue The upper surface of Part III 33.

The battery modules further include harness plate, and harness plate can be connected to first part 31 or second part by nickel sheet 32, thus the information such as electric current, voltage of the first battery 1 of acquisition and the second battery 2.

In application, the position of Part III 33 is higher than first part 31 and second part 32, in this way can be to avoid heat exchange Component 4 and other components (such as described nickel sheet) of battery modules are interfered.In the course of work of battery modules, converge component 3 On heat can be absorbed by heat exchange component 4, to reduce the temperature of confluence component 3, reduce conduction to the first battery 1 and the second electricity The heat in pond 2 avoids battery temperature rise excessively high, improves the performance of battery.The upper surface of Part III 33 is plane, so third portion Dividing has biggish contact area between 33 and heat exchange component 4, to improve heat transfer efficiency；Meanwhile plane can also effective twelve Earthly Branches Heat exchange component 4 is supportted, connection area is increased, improves uniform force, reduces heat exchange component 4 and the isolated probability of Part III 33.

Referring to Fig. 2, Part III 33 is the plate perpendicular to short transverse Z.Plate is convenient for molding and has biggish table Area helps to improve radiating efficiency.Plate can also effectively support heat exchange component 4.Similarly, first part 31 and second Part 32 is tabular and is parallel to Part III 33.

Confluence component 3 further includes Part IV 34 and Part V 35, and Part IV 34 is from first part 31 close to the One end of two parts 32 upwardly extends and is connected to Part III 33, close first part of the Part V 35 from second part 32 31 one end upwardly extends and is connected to Part III 33.Part IV 34 be tabular and towards close to Part V 35 direction Inclination, Part V 35 are tabular and tilt towards the direction close to Part IV 34.Part III 33, Part IV 34 and Five parts 35 surround a groove.

In the assembling process of battery modules, need to stack gradually battery；And due to rigging error, thus adjacent cell it Between may there are differences in height on short transverse Z.If confluence component 3 generally tabular, when the first battery 1 and the There are the bonding strengths and second part 32 that when difference in height, will affect between first part 31 and the first battery 1 between two batteries 2 With the bonding strength of the second battery 2.And in this application, Part IV 34 and Part V 35 have elasticity, in the work of external force Under, the angle that Part IV 34 and Part V 35 are bent can change, thus absorb the first battery 1 and the second battery 2 it Between difference in height, guarantee welding quality.

In addition, battery will appear expansion in the course of work of battery modules, to stretch confluence component 3.And in this Shen Please in, when the first battery 1 and the second battery 2 expand, Part IV 34 and Part V 35 can be under the action of expansive forces Deformation avoids confluence component 3 from being pulled off to absorb expansive force.

The component 3 that converges is preferably one-piece member.For example, confluence component 3 can be by bending, squeezing metal plate (such as aluminium Plate or copper sheet) it is made.

The confluence component 3 of the application is described in detail with different embodiments below.

In the first embodiment, reference Fig. 2, Part IV 34 and Part V 35 are connected to the following table of Part III 33 Face, and the both ends of the Y along longitudinal direction of Part III 33 exceed Part IV 34 and Part V 35 respectively.Along short transverse Z, third portion Points 33 can be Chong Die with first part 31 and second part 32.

In the first embodiment of the application, by increasing the Y width along longitudinal direction of Part III 33, Part III can be increased 33 surface area improves the contact area of Part III 33 and heat exchange component 4, improves heat dissipation effect.

The component 3 that converges further includes protrusion 3B, is extended downwardly from the lower surface of Part III 33.Protrusion 3B can further increase The surface area of big confluence component 3, improves the radiating efficiency of confluence component 3.Protrusion 3B can be multiple and arranged for interval.

In a second embodiment, referring to Fig. 3, first part 31 and second part 32 are all provided with fluted 3C.

The quantity of heat production of confluence component 3 is directly proportional to resistance, and thickness of the resistance then with confluence component 3 is inversely proportional, that is, It says, by increasing the whole thickness of confluence component 3, can reduce the quantity of heat production of confluence component 3, improve the overcurrent of confluence component 3 Ability avoids battery temperature rise excessively high.

And first part 31 is generally fixed to the electrode terminal T of the first battery 1 by laser welding, if first part 31 Thickness is excessive, it will influences the bonding strength of first part 31 and the first battery 1.

In a second embodiment, first part 31 is equipped with groove 3C, so the bottom wall of groove 3C has lesser thickness, it can The bottom wall of groove 3C is directly welded to the electrode terminal T of the first battery 1.That is, the application can increase confluence component 3 Integral thickness, thus reduce confluence component 3 quantity of heat production, meanwhile, reduced by opening up groove 3C in first part 31 Welding difficulty guarantees the bonding strength of first part 31 and the first battery 1.

Similarly, it can guarantee the company of second part 32 and the second battery 2 by opening up groove 3C on second part 32 also Connect intensity.

In the third embodiment, referring to Fig. 4, confluence component 3 further includes Part VI 36, Part VII 37 and Part VIII 38, Part VI 36 is set between the first battery 1 and first part 31, and Part VII 37 is set to the second battery 2 and second Between part 32, Part VIII 38 connects Part VI 36 and Part VII 37.Part VIII 38 is set to Part III 33 Downside.

Specifically, in the third embodiment, first part 31 and Part VI 36 are stacked on top of one another and be welded and fixed to first Battery 1；In addition to welding region, first part 31 and about 36 Part VI are separated, and have small gap between the two；When When a part 31 and 36 heat production of Part VI, heat can distribute outward via the gap.

Similarly, second part 32 and Part VII 37 are stacked on top of one another and be welded and fixed to the second battery 2；Except welding region Outside, also there is small gap between second part 32 and Part VII 37；When 37 heat production of second part 32 and Part VII, Heat can distribute outward via the gap.

Part VIII 38 and about 33 Part III are kept completely separate, and also have small gap between the two.When the 8th When dividing 38 and 33 heat production of Part III, heat can distribute outward via the gap.

The first part 31 of 3rd embodiment and the overall thickness of Part VI 36 can be equal to the first part of first embodiment 31 thickness, the second part 32 of 3rd embodiment and the overall thickness of Part VII 37 can be equal to the second part of first embodiment 32 thickness, the Part III 33 of 3rd embodiment and the overall thickness of Part VIII 38 can be equal to the Part III of first embodiment 33 thickness.Compared with the integral structure of first embodiment, radiating efficiency is can be improved in the double-layer structure of 3rd embodiment, is reduced Hot stack.

Confluence component 3 further includes Part IX 39 and Part X 3A, and Part IX 39 is from Part VI 36 close to the One end of seven parts 37 upwardly extends and is connected to Part VIII 38, close six of the Part X 3A from Part VII 37 36 one end is divided to upwardly extend and be connected to Part VIII 38.Part IV 34 and Part IX 39 are stacked, Part V 35 and Part X 3A is stacked, and Part III 33 and Part VIII 38 are stacked.

Although Part III 33, Part IV 34 and Part V 35 fit in Part VIII 38, Part IX 39 respectively With Part X 3A, but compared with integral structure, there will necessarily be small gap between each section, to improve heat dissipation Efficiency.

The component 3 that converges can be split type component.For example, first part 31, second part 32, Part III 33, the 4th Points 34 and Part V 35 be an independent metal plate, Part VI 36, Part VII 37, Part VIII 38, Part IX 39 and Part X 3A is another independent metal plate, and two metal plates can be first stacked together, then simultaneously by welding Fixed to battery.

Certainly, confluence component 3 can be directly bent to two layers by a metal plate.Specifically, transversely X, Part VI 36 One end be connected with one end of first part 31, one end of Part VII 37 is connected with one end of second part 32.The position of bending It sets as Part VI 36 and the junction of first part 31 and the junction of Part VII 37 and second part 32.

Referring to figure 5 and figure 6, compared with 3rd embodiment, the leaning on from Part VI 36 of Part IX 39 of fourth embodiment One end of nearly Part VII 37 extends downwardly, and one end of Part X 3A from the close Part VI 36 of Part VII 37 is downward Extend.

Fourth embodiment can increase the gap of Part III 33 and Part VIII 38, Part IV 34 and Part IX 39 Gap and Part V 35 and Part X 3A gap, thus increase confluence component 3 expose surface area, be convenient for air Flowing, improve heat exchange efficiency.

Claims (10)

1. a kind of battery modules, which is characterized in that including the first battery (1), the second battery (2) and confluence component (3)；

Confluence component (3) is set on the upside of the first battery (1) and the second battery (2) and including first part (31), second part (32) it is connected to the first battery (1) with Part III (33), first part (31), second part (32) is connected to the second battery (2), Part III (33) connection first part (31) and second part (32)；

Along short transverse (Z), the position of Part III (33) is higher than first part (31) and second part (32)；

The upper surface of Part III (33) is plane and the heat exchange component (4) for being used to support the battery modules.

2. battery modules according to claim 1, which is characterized in that Part III (33) is perpendicular to short transverse (Z) Plate.

3. battery modules according to claim 2, which is characterized in that confluence component (3) further include Part IV (34) and Part V (35), Part IV (34) are upwardly extended and are connected from one end of the close second part (32) of first part (31) In Part III (33), Part V (35) upwardly extends and connects from one end of the close first part (31) of second part (32) It is connected to Part III (33).

4. battery modules according to claim 3, which is characterized in that Part IV (34) and Part V (35) are connected to The lower surface of Part III (33), and the both ends of Part III (33) (Y) along longitudinal direction exceed Part IV (34) and the 5th respectively Partially (35).

5. battery modules according to claim 3, which is characterized in that

Confluence component (3) further includes Part VI (36), Part VII (37) and Part VIII (38), Part VI (36) setting Between the first battery (1) and first part (31), Part VII (37) be set to the second battery (2) and second part (32) it Between, Part VIII (38) connects Part VI (36) and Part VII (37)；

Part VIII (38) is set to the downside of Part III (33).

6. battery modules according to claim 5, which is characterized in that confluence component (3) further include Part IX (39) and Part X (3A), Part IX (39) are extended downwardly and are connected from one end of the close Part VII (37) of Part VI (36) In Part VIII (38), Part X (3A) extends downwardly simultaneously from one end of the close Part VI (36) of Part VII (37) It is connected to Part VIII (38).

7. battery modules according to claim 5, which is characterized in that transversely (X), one end of Part VI (36) and the The one end of a part of (31) is connected, and one end of Part VII (37) is connected with one end of second part (32).

8. battery modules according to claim 2, which is characterized in that confluence component (3) further includes protrusion (3B), from third Partially the lower surface of (33) extends downwardly.

9. battery modules according to claim 1, which is characterized in that first part (31) and second part (32) are equipped with Groove (3C).

10. battery modules according to claim 1, which is characterized in that confluence component (3) is integral type component.