CN207967103U

CN207967103U - Battery modules

Info

Publication number: CN207967103U
Application number: CN201820318637.9U
Authority: CN
Inventors: 黄小腾; 谷燕龙
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2018-03-08
Filing date: 2018-03-08
Publication date: 2018-10-12
Anticipated expiration: 2028-03-08

Abstract

The utility model provides a kind of battery modules comprising battery and side plate, side plate are set to the both sides of battery transversely.The outer end of the bottom surface of battery transversely has the card slot being recessed upwards；There is side plate main body and flanging, main body to be set to the outside of battery transversely, and flanging extends from the bottom end of main body and is caught in card slot laterally inward.Since the flanging of side plate is caught in card slot, and then the difference in height of the bottom surface of flanging and the bottom surface of battery can be effectively reduced under the premise of ensureing battery module structure intensity.Compared with prior art, the difference in height of the bottom surface of the bottom surface and battery of the flanging of the application is small, it is possible to effectively reduce the thickness of heat conductive pad, and then mitigate the weight of battery modules, improve energy density.

Description

Battery modules

Technical field

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

Background technology

Battery pack is the heart of electric vehicle, and battery pack is usually made of multiple battery modules, and battery modules then by Multiple battery compositions.The battery of battery modules is usually fixed by end plate and side plate, in order to support battery, ensures flatness, side plate Bottom end often to hem processing, the flanging of formation supports battery from downside.And in order to ensure battery module structure intensity, side Plate needs certain thickness, and battery bottom surface is caused to be higher than the bottom surface (being at least higher by a side plate thickness) of side plate.Battery is in work Heat production during work, therefore, battery usually require to exchange heat with the heat management system in electric vehicle；Specifically, the bottom of battery Face needs to contact with the heat exchanger plates of heat management system by heat conductive pad, to realize the heat exchange of battery.Since battery bottom surface wants high Lead to heat conductive pad so the part that battery bottom surface is higher by the bottom surface of side plate needs to be supplemented by heat conductive pad in the bottom surface of side plate Thickness is bigger than normal.Since heat conductive pad density is not much different with metallic aluminium, cause the weight of the heat management system of electric vehicle larger, no Conducive to promotion battery pack energy density.

Utility model content

The problem of in view of background technology, the purpose of this utility model is to provide a kind of battery modules, can drop The difference in height of the bottom surface of low flanging and the bottom surface of battery mitigates the weight of battery modules, improves energy density.

To achieve the goals above, the utility model provides a kind of battery modules comprising battery and side plate, side plate are set It is placed in the both sides of battery transversely.The outer end of the bottom surface of battery transversely has the card slot being recessed upwards；Side plate have main body and Flanging, main body are set to the outside of battery transversely, and flanging extends from the bottom end of main body and is caught in card slot laterally inward.

The beneficial effects of the utility model are as follows：Since the flanging of side plate is caught in card slot, and then it can ensure battery Under the premise of modular structure intensity, it is effectively reduced the difference in height of the bottom surface of flanging and the bottom surface of battery.Compared with prior art, The difference in height of the bottom surface of the flanging of the application and the bottom surface of battery is small, it is possible to effectively reduce the thickness of heat conductive pad, in turn Mitigate the weight of battery modules, improves energy density.

Description of the drawings

Fig. 1 is according to an exploded view of the battery modules of the utility model, and wherein heat exchanger plates and heat conductive pad omit.

Fig. 2 is another exploded view according to the battery modules of the utility model.

Fig. 3 is the schematic diagram according to the battery of the battery modules of the utility model.

Wherein, the reference numerals are as follows：

1 battery, 6 first insulating film

11 card slot, 7 second insulating film

2 side plate, 8 harness plate

21 main body, 9 cover board

22 flanging X are lateral

3 end plate Y are longitudinal

4 heat exchanger plates Z upper and lower directionss

5 heat conductive pads

Specific implementation mode

It is described in detail the battery modules of the utility model with reference to the accompanying drawings.

Referring to figs. 1 to Fig. 3, battery modules according to the present utility model include battery 1 and side plate 2, and side plate 2 is set to battery The both sides of 1 transversely X.The outer end of the bottom surface of battery 1 transversely X has the card slot 11 that is recessed upwards；Side plate 2 has 21 He of main body Flanging 22, main body 21 are set to the outside of the transversely X of battery 1, and from the bottom end of main body 21, transversely X extends internally and blocks flanging 22 Enter card slot 11.

Referring to Fig.1, battery 1 can be multiple and Y is arranged in order along longitudinal direction.Side plate 2 can be two, the flanging 22 of each side plate 2 Battery 1 is supported from downside, to increase the structural strength of battery modules.

Since the flanging 22 of side plate 2 is caught in card slot 11, so can under the premise of ensureing battery module structure intensity, It is effectively reduced the difference in height of the bottom surface of flanging 22 and the bottom surface of battery 1.

With reference to Fig. 2, the battery modules further include heat exchanger plates 4 and heat conductive pad 5, and heat exchanger plates 4 are set to the downside of battery 1, Heat conductive pad 5 is held between heat exchanger plates 4 and battery 1.Heat exchanging liquid (such as glycol water) when flowing through heat exchanger plates 4 via Heat conductive pad 5 exchanges heat with battery 1, ensures that battery 1 works within the temperature range of setting.It is equipped with for heat exchanging liquid stream in heat exchanger plates 4 Dynamic channel.

Compared with prior art, the difference in height of the bottom surface and the bottom surface of battery 1 of the flanging 22 of the application is small, it is possible to have Effect ground reduces the thickness of heat conductive pad 5, and then mitigates the weight of battery modules, improves energy density.

Preferably, the bottom surface of battery 1 is flushed with the bottom surface of flanging 22.In other words, the bottom of the bottom surface of battery 1 and flanging 22 Face is coplanar.At this point, heat conductive pad 5 is used for absorbing build-up tolerance, thickness can reduce accordingly, to reduce battery modules Weight improves energy density, while can also reduce thermally conductive pathways, improves heat transfer effect.In addition, flanging 22 also can be with heat conductive pad 5 contacts, increase heat exchange area, further increase heat transfer effect.

The material of high heat conduction and softness can be used in heat conductive pad 5.Heat conductive pad 5 can absorb the public affairs between battery 1 and heat exchanger plates 4 Difference ensures that heat exchanger plates 4 and the bottom surface of battery 1 are in close contact, reduces the thermal resistance of thermally conductive pathways, improve heat exchange efficiency.

Referring to Figures 1 and 2, battery modules further include being set to the end plate 3 at the both ends of Y along longitudinal direction of battery 1, the master of side plate 2 Body 21 is fixed on end plate 3, and side plate 2 and end plate 3 are connected as framework and fixed battery 1.End plate 3 is two and battery is clamped from both ends 1.Two end plates and two side plates 2 are fixedly connected as the framework of rectangle.

Referring to Fig.1, the battery modules further include the first insulating film 6 being held between end plate 3 and battery 1 and clamping The second insulating film 7 between side plate 2 and battery 1.First insulating film 6 is used to separate end plate 3 and the insulation of battery 1, and second absolutely Velum 7 is used to separate side plate 2 and the insulation of battery 1.Second insulating film, 7 bottom end has flange area, is held on flanging 22 and battery 1 Between.

The battery modules further include harness plate 8, and the top of setting and battery 1 is simultaneously electrically connected to battery 1.Harness plate 8 wraps Include busbar and sampling line.Busbar can be by 1 connection in series-parallel of multiple batteries.Sampling line can acquire the voltage of each battery 1, temperature Etc. information, and the information of acquisition is transferred to battery management system.

The battery modules further include cover board 9, are set to the top of harness plate 8 and are fixed on end plate 3.Cover board 9 is for protecting Protect harness plate 8.

Claims

1. a kind of battery modules, including battery (1) and side plate (2), side plate (2) is set to the both sides of battery (1) transversely (X)；

It is characterized in that,

The outer end of the bottom surface of battery (1) transversely (X) has the card slot (11) that is recessed upwards；

There is side plate (2) main body (21) and flanging (22), main body (21) to be set to the outside of battery (1) transversely (X), flanging (22) from the bottom end of main body (21), transversely (X) extends internally and is caught in card slot (11).

2. battery modules according to claim 1, which is characterized in that the battery modules further include heat exchanger plates (4) and lead Heat pad (5), heat exchanger plates (4) are set to the downside of battery (1), and heat conductive pad (5) is held between heat exchanger plates (4) and battery (1).

3. battery modules according to claim 1, which is characterized in that battery modules further include being set to battery (1) along vertical To the end plate (3) at the both ends of (Y), the main body (21) of side plate (2) is fixed on end plate (3), and side plate (2) and end plate (3) are connected as frame Body and fixed battery (1).

4. battery modules according to claim 3, which is characterized in that the battery modules further include being held on end plate (3) The first insulating film (6) between battery (1).

5. battery modules according to claim 1, which is characterized in that the bottom surface of battery (1) and the bottom surface of flanging (22) are neat It is flat.

6. battery modules according to claim 1, which is characterized in that the battery modules further include being held on side plate (2) The second insulating film (7) between battery (1).

7. battery modules according to claim 1, which is characterized in that the battery modules further include harness plate (8), setting With the top of battery (1) and be electrically connected to battery (1).

8. battery modules according to claim 7, which is characterized in that harness plate (8) includes busbar and sampling line.

9. battery modules according to claim 7, which is characterized in that the battery modules further include cover board (9), are set to The top of harness plate (8).