CN217158409U

CN217158409U - Battery module and battery pack

Info

Publication number: CN217158409U
Application number: CN202220565221.3U
Authority: CN
Inventors: 罗阳成; 周元; 王峥嵘; 张国江
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2022-03-15
Filing date: 2022-03-15
Publication date: 2022-08-09
Anticipated expiration: 2032-03-15

Abstract

The utility model discloses a battery module and battery package, this battery module include casing and electric core, are equipped with mounting structure on the lateral wall of casing, and mounting structure is used for linking to each other with the shell of battery package, and electric core is a plurality of, and a plurality of electric cores are arranged in proper order in the casing along the length direction of casing, and the inside wall of casing is equipped with the adhesive linkage, and the adhesive linkage bonds on electric core. The battery module is provided with more battery cores and is more stable in connection with the shell of the battery pack.

Description

Battery module and battery pack

Technical Field

The utility model relates to a battery technology field especially relates to a battery module and battery package.

Background

The battery package of car is by the shell with establish a plurality of battery module in the shell, every battery module includes the casing again and establishes a plurality of electric cores in the casing, the casing has end plate and curb plate, end plate, curb plate and electric core adopt the ribbon to tie up, is equipped with the connection structure who is connected with the shell on the end plate, but because the area of end plate is less, just can not guarantee the stability of being connected of end plate and shell when electric core is too much. Therefore, in order to ensure stability, the quantity of electric core of present battery module is relatively limited, is unfavorable for promoting the energy density of battery package to be unfavorable for promoting the continuation of the journey mileage of trolley-bus.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery module, electric core in this battery module is more, and is connected comparatively stably with the shell of battery package.

A second object of the utility model is to provide a battery pack, this battery pack's energy density is great, and spare part is less, is favorable to promoting the continuation of the journey mileage of trolley-bus.

In order to realize the technical effect, the technical scheme of the utility model as follows:

the utility model discloses a battery module, include: the battery pack comprises a shell, wherein the outer side wall of the shell is provided with a mounting structure, and the mounting structure is used for being connected with a shell of the battery pack; the battery comprises a plurality of battery cells, and the plurality of battery cells are sequentially arranged in the shell along the length direction of the shell; the inner side wall of the shell is provided with a bonding layer, and the bonding layer is bonded on the battery cell.

In some embodiments, the casing includes a top plate, an end plate, and a side plate, the end plate extends along a length direction of the battery cell, the side plate extends along a thickness direction of the battery cell, the top plate is fastened to the end plate and the side plate, the mounting structure is disposed on an outer side wall of the end plate, and the adhesive layer is disposed on an inner side wall of the side plate.

In some specific embodiments, the mounting structure includes a connecting member and a plurality of mounting ears, the mounting ears are distributed on the connecting member at intervals along the length direction of the side plate, the mounting ears are provided with mounting holes, and the housing is connected with the outer shell of the battery pack through mounting pieces arranged in the mounting holes in a penetrating manner.

In some specific embodiments, the two ends of the side plate are provided with connecting flanges, and the connecting flanges are connected with the end faces for the end plates.

In some specific embodiments, an insulating layer is further disposed on the inner side wall of the side plate, and the adhesive layer is disposed on the insulating layer.

In some specific embodiments, fixing holes are formed at two ends of the end plate, and the housing is connected to the outer shell of the battery pack through fixing members inserted into the fixing holes.

In some embodiments, the battery module further includes a heat insulation member, and the heat insulation member is disposed between two adjacent battery cells and is bonded to the battery cells.

In some embodiments, a plurality of the battery cells form a battery pack, the width direction of the battery pack is the width direction of the casing, and the battery module further includes an insulating plate disposed between the side wall of the battery pack in the width direction and the casing.

In some embodiments, the battery module further includes a connecting plate, the connecting plate is disposed at the upper end of the battery core, and the connecting plate is provided with a sensor for detecting parameters of the battery core and an aluminum bar connected to the battery core.

The utility model also discloses a battery package, including shell and the foreland battery module.

The utility model discloses a beneficial effect of battery module: the inside wall of casing is equipped with adhesive linkage and mounting structure, and the adhesive linkage is used for bonding electric core, and mounting structure is used for linking to each other with the shell of battery package, can be guaranteeing under the circumstances of connection stability, thereby increase the number of battery and promote the energy density of battery module.

The utility model discloses a beneficial effect of battery package: due to the battery module, the energy density of the battery pack is high, parts are few, and the duration mileage of the electric car is favorably improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is an exploded schematic view of a battery module according to an embodiment of the present invention;

fig. 2 is a schematic view of a partial structure of a battery module according to an embodiment of the present invention;

fig. 3 is a schematic structural view of an end plate of the battery module according to the present invention;

fig. 4 is a schematic view of an assembly structure of a battery module and a battery pack case according to the present invention;

FIG. 5 is a partial cross-sectional view of the structure shown in FIG. 4;

fig. 6 is another partial cross-sectional view of the structure shown in fig. 4.

Reference numerals:

1. a housing; 11. a top plate; 12. an end plate; 121. a fixing hole; 13. a side plate; 131. connecting the flanging; 2. an electric core; 3. a mounting structure; 31. a connecting member; 32. mounting lugs; 321. mounting holes; 4. an adhesive layer; 5. a thermal insulation member; 6. an insulating layer; 7. an insulating plate; 8. a connecting plate; 9. a housing; 10. a mounting member; 20. and a fixing member.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The battery module according to an embodiment of the present invention is described below with reference to fig. 1 to 6.

The utility model discloses a battery module, as shown in fig. 1, the battery module of this embodiment includes casing 1 and electric core 2, is equipped with mounting structure 3 on casing 1's the lateral wall, and mounting structure 3 is used for linking to each other with the shell 9 of battery package, and electric core 2 is a plurality of, and a plurality of electric cores 2 are arranged in casing 1 along casing 1's length direction in proper order, and casing 1's inside wall is equipped with adhesive linkage 4, and adhesive linkage 4 bonds on electric core 2.

It can be understood that, in this embodiment, the inner side wall of the casing 1 is provided with the adhesive layer 4 for adhering the battery cell 2, so that a binding band in the prior art is not needed, and the assembly of the battery module is facilitated while the structure of the battery module is simplified. Meanwhile, since the mounting structure 3 is provided on the outer side wall of the case 1, the area of the side wall of the case 1 in the length direction thereof is large, and the mounting structure 3 provided with the case 9 for connecting the battery pack can ensure the connection stability of the battery module and the case 9, and can increase the number of batteries to thereby improve the energy density of the battery module while ensuring the connection stability.

In some embodiments, as shown in fig. 1, the casing 1 includes a top plate 11, an end plate 12 and a side plate 13, the end plate 12 extends along a length direction of the battery cell 2, the side plate 13 extends along a thickness direction of the battery cell 2, the top plate 11 is fastened on the end plate 12 and the side plate 13, the mounting structure 3 is disposed on an outer side wall of the end plate 12, and the adhesive layer 4 is disposed on an inner side wall of the side plate 13. It can be understood that the casing 1 is split into the top plate 11, the end plate 12 and the side plate 13, so that the whole battery module is convenient to assemble, and the assembly efficiency of the battery module is improved. And facilitates mounting or machining of the mounting structure 3 and the adhesive layer 4 on the side plate 13. The top plate 11 mainly plays a role in insulation protection, is light in weight and thin in shape, and is made of plastic. The end plate 12 mainly bears the weight of the battery cell 2 transmitted from the side plate 13, and then transmits the weight of the battery cell 2 to the cross beam of the lower box body of the battery pack. The side plate 13 mainly plays a role of connecting the battery cell 2, and ensures that the battery cell 2 can be stably connected to the housing 1. Alternatively, both the end plate 12 and the side plate 13 are provided.

Optionally, the side plate 13 is made of Al5052 or Al6061-T6, and the length thereof can be adjusted according to the design length of the battery module, generally to 0.8m-1.2 m.

In some specific embodiments, as shown in fig. 2, the mounting structure 3 includes a connecting member 31 and a plurality of mounting ears 32, the plurality of mounting ears 32 are spaced apart from each other along the length direction of the side plate 13 and distributed on the connecting member 31, the mounting ears 32 have mounting holes 321, as shown in fig. 6, and the housing 1 is connected to the outer shell 9 of the battery pack by the mounting members 10 inserted into the mounting holes 321. It will be appreciated that the plurality of mounting ears 32 ensure the stability of the connection of the mounting structure 3 to the housing 9 of the battery pack, while the connectors 31 ensure the stability of the connection of the mounting structure 3 to the side plates 13, and thus the stability of the connection of the side plates 13 to the housing 9.

Alternatively, the mounting member 10 may be selected from a bolt, a connecting pin, and the like according to actual needs. Preferably, the battery pack is a blind rivet bolt, and a blind rivet nut or a steel wire threaded sleeve matched with the blind rivet bolt is arranged on the shell 9 of the battery pack.

Optionally, the material of the mounting structure 3 is Al5052 or Al6061-T6, which may be the same as the material of the side plate 13, or may be selected from other materials to slightly enhance the structural strength.

It should be additionally noted that the connecting member 31 and the mounting ear 32 may be integrally formed with the side plate 13, or the connecting member 31 may be welded to the side plate 13.

In some specific embodiments, as shown in fig. 2, the side plate 13 is provided with connecting flanges 131 at both ends thereof, and the connecting flanges 131 are used to connect with the end surfaces of the end plates 12. It can be understood that, in the actual connection process, connect turn-ups 131 and end the terminal surface of ending at end plate 12 on, then connect, increased the joint strength of curb plate 13 and end plate 12 on the one hand, ensured the intensity of whole battery module, the great convenient connection of area of contact of on the other hand curb plate 13 and end plate 12 to the packaging efficiency of battery module has been promoted.

The embodiment of the utility model provides an in, connect turn-ups 131 and end plate 12's terminal surface can realize being connected through modes such as welding, joint or threaded connection, specific connected mode can select according to actual need.

In some specific embodiments, as shown in fig. 2, the inner side wall of the side plate 13 is further provided with an insulating layer 6, and the adhesive layer 4 is provided on the insulating layer 6. It can be understood that, be equipped with insulating layer 6 on the inner wall of curb plate 13, on the one hand adhesive linkage 4 can have better adhesive strength with insulating layer 6 to guaranteed curb plate 13 and electric core 2's connection stability, on the other hand, curb plate 13 generally adopts metal manufacturing, and metallic end plate 12 damages easily with the outside blue membrane friction of electric core 2, can avoid this kind of phenomenon to take place betterly after having increased insulating layer 6, thereby promotes electric core 2's life.

It should be noted that, in the embodiment of the present invention, the material of the insulating layer 6 may be selected according to actual needs, and the material of the insulating layer 6 is not limited herein.

In some embodiments, as shown in fig. 3 and 5, the end plate 12 has fixing holes 121 at both ends thereof, and the case 1 is connected to the outer case 9 of the battery pack by fixing members 20 inserted into the fixing holes 121. It can be understood that the fixing member 20 can ensure the connection stability of the end plate 12 and the outer case 9, thereby further improving the connection stability of the battery module and the outer case 9 of the entire battery pack.

Alternatively, the fixing member 20 may be a bolt, a connecting pin, or the like according to actual needs. Preferably, the battery pack is provided with a rivet bolt, and a rivet nut or a steel wire threaded sleeve matched with the rivet bolt is arranged on the shell 9 of the battery pack.

In some embodiments, as shown in fig. 1, the battery module further includes a heat insulation member 5, where the heat insulation member 5 is disposed between two adjacent battery cells 2 and is bonded to the battery cells 2. From this, can not transmit to adjacent electric core 2 after single electric core 2 thermal runaway, the battery module level also has splendid thermal safety.

Preferably, heat insulating part 5 is aerogel pad, and thickness 1 mm-3 mm, aerogel pad have splendid thermal insulation effect, under suitable lectotype, can not transmit to adjacent electric core 2 after reaching single electric core 2 thermal runaway, and battery module level also has splendid thermal safety nature. Of course, the heat insulation member 5 may be made of other materials according to actual needs.

In some embodiments, as shown in fig. 1, the plurality of electric cores 2 form an electric core group, the width direction of the electric core group is the width direction of the casing 1, and the battery module further includes an insulating plate 7, and the insulating plate 7 is disposed between the side wall of the electric core group in the width direction and the casing 1. . It is understood that the insulating plate 7 can be damaged to prevent the external blue film of the cell 2 from rubbing against the end plate 12 and increase the thermal resistance between the first cell 2 and the end plate 12, and can prevent the cell 2 from being shorted with the end plate 12. Note that the material of the insulating plate 7 may be selected according to actual needs, and the material of the insulating plate 7 is not specifically limited.

Optionally, the insulating plate 7 is bonded to the housing 1, so that the insulating plate 7 can be conveniently mounted. Of course, the insulating plate 7 can also be connected by other means, such as welding, riveting, snapping, etc.

In some embodiments, as shown in fig. 1, the battery module further includes a connection board 8, the connection board 8 is disposed above the battery cell 2, and the connection board 8 is provided with a sensor for detecting parameters of the battery cell 2 and an aluminum bar connected to the battery cell 2. Therefore, the parallel connection and/or the series connection of the battery cells 2 can be realized, and the working condition of the battery cells 2 can be monitored in real time.

Example (b):

a battery module according to an embodiment of the present invention will be described with reference to fig. 1 to 6.

As shown in fig. 1 to 6, the battery module of the present embodiment includes a case 1 and a battery cell 2. Casing 1 includes roof 11, end plate 12 and curb plate 13, and end plate 12 extends the setting along the length direction of electric core 2, and the both ends of end plate 12 are equipped with fixed orifices 121, and casing 1 links to each other with the shell 9 of battery package through wearing to establish mounting 20 in fixed orifices 121. The side plate 13 extends along the thickness direction of the battery cell 2, the two ends of the side plate 13 are provided with connecting flanges 131, and the connecting flanges 131 are connected with the end faces of the end plates 12 in a welding manner. The top plate 11 is buckled on the end plate 12 and the side plate 13, the mounting structure 3 is arranged on the outer side wall of the end plate 12, the mounting structure 3 comprises a connecting piece 31 and a plurality of mounting lugs 32, the mounting lugs 32 are distributed on the connecting piece 31 at intervals along the length direction of the side plate 13, the mounting lugs 32 are provided with mounting holes 321, and the shell 1 is connected with the shell 9 of the battery pack through the mounting pieces 10 arranged in the mounting holes 321 in a penetrating mode. The inner side wall of the side plate 13 is also provided with an insulating layer 6, and the insulating layer 6 is arranged on the bonding layer 4. Electric core 2 is a plurality of, and a plurality of electric cores 2 are arranged in casing 1 along casing 1's length direction in proper order, and electric core 2's lateral wall bonds on adhesive linkage 4. Be equipped with insulation board 7 between end plate 12 and electric core 2, insulation board 7 bonds on end plate 12, and connecting plate 8 is established between the top of electric core 2 and roof 11.

The utility model also discloses a battery package, including the battery module in shell 9 and the foreland.

The utility model discloses a battery pack is owing to have the foretell battery module for this battery pack's energy density is great, and spare part is less, is favorable to promoting the continuation of the journey mileage of trolley-bus.

In the description herein, references to the description of "some embodiments," "other embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. A battery module, comprising:

the battery pack comprises a shell (1), wherein the outer side wall of the shell (1) is provided with a mounting structure (3), and the mounting structure (3) is used for being connected with a shell (9) of the battery pack;

the battery cell comprises a plurality of battery cells (2), and the plurality of battery cells (2) are sequentially arranged in the shell (1) along the length direction of the shell (1);

the battery cell is characterized in that an adhesive layer (4) is arranged on the inner side wall of the shell (1), and the adhesive layer (4) is adhered to the battery cell (2).

2. The battery module according to claim 1, wherein the housing (1) comprises a top plate (11), an end plate (12) and a side plate (13), the end plate (12) extends along the length direction of the battery cell (2), the side plate (13) extends along the thickness direction of the battery cell (2), the top plate (11) is fastened on the end plate (12) and the side plate (13), the mounting structure (3) is arranged on the outer side wall of the end plate (12), and the adhesive layer (4) is arranged on the inner side wall of the side plate (13).

3. The battery module according to claim 2, wherein the mounting structure (3) comprises a connecting member (31) and a plurality of mounting lugs (32), the mounting lugs (32) are distributed on the connecting member (31) at intervals along the length direction of the side plate (13), the mounting lugs (32) are provided with mounting holes (321), and the shell (1) is connected with the outer shell (9) of the battery pack through mounting pieces (10) arranged in the mounting holes (321).

4. The battery module according to claim 2, wherein the side plates (13) are provided at both ends thereof with connecting flanges (131), and the connecting flanges (131) are used for connecting with the end faces of the end plates (12).

5. The battery module according to claim 2, wherein an insulating layer (6) is further provided on the inner side wall of the side plate (13), and the adhesive layer (4) is provided on the insulating layer (6).

6. The battery module according to claim 2, wherein the end plates (12) are provided at both ends thereof with fixing holes (121), and the case (1) is connected to the outer case (9) of the battery pack by fixing members (20) inserted into the fixing holes (121).

7. The battery module according to any one of claims 1-6, further comprising a thermal insulation member (5), wherein the thermal insulation member (5) is arranged between two adjacent electric cores (2) and is bonded to the electric cores (2).

8. The battery module according to any one of claims 1-6, wherein a plurality of the electric cores (2) form a core pack, the width direction of the core pack is the width direction of the shell (1), and the battery module further comprises an insulating plate (7), and the insulating plate (7) is arranged between the side wall of the core pack along the width direction and the shell (1).

9. The battery module according to any of claims 1-6, characterized in that the battery module further comprises a connecting plate (8), wherein the connecting plate (8) is arranged at the upper end of the battery cell (2), and the connecting plate (8) is provided with a sensor for detecting parameters of the battery cell (2) and an aluminum bar connected with the battery cell (2).

10. A battery pack, characterized by comprising a housing (9) and the battery module according to any one of claims 1 to 9.