CN113594610A

CN113594610A - Battery module for vehicle and vehicle

Info

Publication number: CN113594610A
Application number: CN202010366657.5A
Authority: CN
Inventors: 王稳; 王珏; 陈森; 高顺航; 孙新乐
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2021-11-02
Anticipated expiration: 2040-04-30
Also published as: CN113594610B

Abstract

The invention discloses a battery module for a vehicle and the vehicle, wherein an electricity storage assembly is arranged in the battery module, and the electricity storage assembly comprises: the shell is internally provided with an accommodating space; a baffle assembly disposed within the accommodation space to divide the accommodation space into a plurality of chambers; the pole groups are multiple and each pole group is arranged in the corresponding cavity; wherein a plurality of the chambers are arranged in sequence along the front-back direction, each chamber extends along the left-right direction, the thickness of the chamber is T1, the height of the shell is T2, and the relationship between the thickness of the chamber T1 and the height of the shell T2 is as follows: T1/T2 is more than or equal to 0.05 and less than or equal to 0.5. From this, can arrange a plurality of utmost point groups in making a casing, reduce the quantity of casing to make the clearance between the adjacent utmost point group littleer, so that have more utmost point groups in the battery module, improved battery module's energy density.

Description

Battery module for vehicle and vehicle

Technical Field

The present application relates to the field of vehicle technology, and in particular, to a battery module for a vehicle and a vehicle.

Background

In the correlation technique, traditional electric core is fixed to the casing for the utmost point group, and through apron welded seal, electric core assembles into the battery module through structure shell again, and the battery module is fixed in the box and is assembled into the battery package again.

According to the assembly scheme, the battery module needs more space for fixing and is provided with the plurality of shells, so that the space utilization rate is reduced, the energy density of the battery pack is lower, and the assembly process is complex, low in efficiency and high in cost.

Content of application

The present application is directed to solving at least one of the problems in the prior art. To this end, an object of the present application is to provide a battery module for a vehicle, which has a higher energy density.

The application further provides a vehicle adopting the battery module.

According to the battery module for a vehicle of the embodiment of the first aspect of the present invention, an electricity storage assembly is provided in the battery module, and the electricity storage assembly includes: the shell is internally provided with an accommodating space; a baffle assembly disposed within the accommodation space to divide the accommodation space into a plurality of chambers; the pole groups are multiple and each pole group is arranged in the corresponding cavity; wherein a plurality of the chambers are arranged in sequence along the front-back direction, each chamber extends along the left-right direction, the thickness of the chamber is T1, the height of the shell is T2, and the relationship between the thickness of the chamber T1 and the height of the shell T2 is as follows: T1/T2 is more than or equal to 0.05 and less than or equal to 0.5.

According to the battery module for the vehicle of the embodiment of the invention, the proportional relation between the thickness of the cavity and the height of the shell is more than or equal to 0.05 and less than or equal to T1/T2 and less than or equal to 0.5, so that a plurality of pole groups can be arranged in one shell, even though the plurality of pole groups can be assembled in the shell with a plurality of cavities, the number of the shells is reduced, the gap between the adjacent pole groups is smaller, the space occupation of parts of the battery module except the shell is smaller, more pole groups are arranged in the battery module, and the energy density of the battery module is improved.

According to some embodiments of the invention, the relationship between the thickness T1 of the chamber and the height T2 of the housing is: T1/T2 is more than or equal to 0.1 and less than or equal to 0.4.

In some embodiments, the distance between two adjacent chambers is T3, the thickness of the pole group is T4, the relationship between the thickness of the chambers T1, the distance between two adjacent chambers T3, and the thickness of the pole group T4 is: T4/(T1+ T3) is not less than 0.75 and not more than 0.99.

Further, the relationship between the thickness T1 of the chamber, the distance T3 between two adjacent chambers, and the thickness T4 of the pole group is: T4/(T1+ T3) is not less than 0.8 and not more than 0.9.

According to some embodiments of the invention, the battery module further comprises: a mounting base within which the housing is disposed, the mounting base having an effective width W1, the vehicle having a width W2, the mounting base having an effective width W1 in relation to the vehicle width W2: W1/W2 is more than or equal to 0.4 and less than or equal to 0.8.

Further, the width of the electric storage assembly is W3, and the relationship between the width of the electric storage assembly W3 and the effective width of the mounting base W1 is: W3/W1 is more than or equal to 0.75 and less than or equal to 0.95.

Further, the effective length of the mounting base is S1, the wheelbase of the vehicle is S2, and the relationship between the effective length of the mounting base S1 and the wheelbase of the vehicle S2 is: 0.3-0.95% of S1/S2.

Further, the length of the power storage assembly is S3, and the relationship between the length of the power storage assembly S3 and the effective length of the mounting base S1 is: S3/S1 is more than or equal to 0.8 and less than or equal to 0.98.

According to some embodiments of the invention, the baffle plate assembly is configured as a serpentine plate and comprises: the U-shaped structure is constructed into a plurality of U-shaped structures, and the U-shaped structures are arranged at intervals; the connecting plate is arranged between two adjacent U-shaped structures, and at least one of the top wall, the free end of the side wall or the connecting plate of each U-shaped structure is fixedly connected with the inner side wall of the shell.

A vehicle according to an embodiment of the second aspect of the invention includes: the battery module for a vehicle described in the above embodiment.

Additional aspects and advantages of the present application 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 present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

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

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

fig. 3 is a schematic view of a pole group of a battery module according to an embodiment of the present invention;

fig. 4 is a schematic view of an electricity storage assembly of a battery module according to an embodiment of the present invention.

Fig. 5 is a schematic view of a case of a battery module according to an embodiment of the present invention;

FIG. 6 is a schematic illustration of a vehicle according to an embodiment of the invention;

fig. 7 is another schematic view of a case of a battery module according to an embodiment of the present invention.

Reference numerals:

the battery module 100 is provided with a battery case,

the mounting base 10, the electricity storage component 20, the shell 21, the baffle plate component 22, the pole group 23 and the buffer layer 231.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

A battery module 100 for a vehicle and a vehicle according to an embodiment of the present application are described below with reference to fig. 1 to 6.

As shown in fig. 2 and 4, according to a battery module 100 for a vehicle according to an embodiment of the first aspect of the present invention, an electricity storage assembly 20 is provided in the battery module 100, and the electricity storage assembly 20 includes: a housing 21, a baffle assembly 22 and a pole set 23.

Wherein, a containing space is arranged in the shell 21; the baffle plate assembly 22 is disposed in the accommodating space to divide the accommodating space into a plurality of chambers; the pole group 23 is multiple and each pole group 23 is arranged in a corresponding chamber; wherein a plurality of cavities arrange in proper order along fore-and-aft direction, and each cavity extends along left and right direction, and the thickness of cavity is T1, and the height of casing 21 is T2, and the relation between the height T2 of the thickness T1 of cavity and casing 21 is: T1/T2 is more than or equal to 0.05 and less than or equal to 0.5.

According to the battery module 100 for a vehicle of the embodiment of the present invention, the proportional relationship between the thickness of the cavity and the height of the case 21 satisfies 0.05 ≦ T1/T2 ≦ 0.5, so that a plurality of pole groups 23 can be arranged within one case 21, even though a plurality of pole groups 23 can be assembled into a case 21 having multiple cavities, the number of cases 21 is reduced, and the gap between adjacent pole groups 23 is made smaller, so that the space occupation of components of the battery module 100 other than the case 21 is made smaller, so that more pole groups 23 are included in the battery module 100, and the energy density of the battery module 100 is improved.

The thickness of the cavity is a distance between two side walls of the same cavity facing each other in the front-rear direction of the battery module 100, and the direction in which the height of the housing 21 is located coincides with the direction in which the height of the vehicle is located.

In addition, referring to fig. 7, it can be understood that, in some embodiments, the electric storage assemblies 20 of the present application are multiple, the housings 21 of the multiple electric storage assemblies 20 are each provided with a connecting lug, and the connecting lugs of two adjacent electric storage assemblies 20 are overlapped and fastened by a fastener to realize the connection of the multiple electric storage assemblies 20, so as to improve the structural strength of the battery module 100.

Preferably, the relationship between the thickness T1 of the chamber and the height T2 of the housing 21 is: T1/T2 is more than or equal to 0.1 and less than or equal to 0.4. Therefore, the thickness of the cavity and the height of the shell 21 are more reasonable, at least two pole groups 23 can be arranged in the same shell 21, the space occupancy rate of the pole groups 23 in the shell 21 can be improved, the pole groups 23 with larger capacitance can be arranged in the shell 21, and the energy density is improved.

In some embodiments, the distance between two adjacent chambers is T3, the thickness of pole group 23 is T4, the relationship between the thickness of the chambers T1, the distance between two adjacent chambers T3, and the thickness of pole group 23T 4 is: T4/T1+ T3 of more than or equal to 0.75 and less than or equal to 0.99.

Wherein, the distance between two adjacent chambers refers to the thickness of the gap between two adjacent chambers or the solid piece between the two chambers.

Like this, make the thickness of utmost point group 23 be close the distance between two cavities and the sum of the thickness of cavity, make the volume of utmost point group 23 more reasonable, when conveniently arranging, make battery module 100's electric capacity higher, energy density is higher.

Preferably, the relationship between the thickness T1 of the chamber, the distance T3 between two adjacent chambers, and the thickness T4 of the pole group 23 is: T4/T1+ T3 is more than or equal to 0.8 and less than or equal to 0.9.

As shown in fig. 1 and 6, the battery module 100 further includes: the mounting base 10, the housing 21 is disposed in the mounting base 10, the effective width of the mounting base 10 is W1, the width of the vehicle is W2, and the relationship between the effective width W1 of the mounting base 10 and the width W2 of the vehicle is: W1/W2 is more than or equal to 0.4 and less than or equal to 0.8.

It will be understood that the effective width of the mounting base 10 refers to: the remaining dimensions of the mounting base 10, excluding the dimensions of the mounting lugs and the footprint of the side walls, correspond to the dimensions of the space defined by the mounting base 10, which in particular characterizes the width dimension of the space defined by the mounting base 10.

According to the battery module 100 for the vehicle of the embodiment of the invention, the ratio of the effective width of the mounting base 10 to the width of the vehicle satisfies the proportional relationship, so that in the vehicle with the same specification and size, the space for accommodating the battery cell of the vehicle adopting the battery module 100 of the embodiment is larger, the energy density in the unit volume is higher, the energy density of the battery module 100 can be effectively improved, and the driving range of the vehicle is further improved.

Note that, in the present application, the longitudinal direction, the width direction of the mounting base 10, and the longitudinal direction and the width direction of the electricity storage module 20 correspond to the front-rear direction of the vehicle and the left-right direction of the vehicle, respectively.

In the particular embodiment shown in fig. 1, the width of the electrical storage assembly 20 is W3, and the relationship between the width W3 of the electrical storage assembly 20 and the effective width W1 of the mounting base 10 is: W3/W1 is more than or equal to 0.75 and less than or equal to 0.95. In this way, the space for disposing the electricity storage components 20 in the mounting base 10 is made larger, and more electricity storage components 20 can be disposed in the same volume of the battery module 100 to improve the energy density of the battery module 100.

As shown in fig. 1 and 6, the effective length of the mounting base 10 is S1, the wheelbase of the vehicle is S2, and the relationship between the effective length S1 of the mounting base 10 and the wheelbase S2 of the vehicle is: 0.3-0.95% of S1/S2.

It will be understood that the effective length of the mounting base 10 refers to: the remaining dimensions of the mounting base 10, excluding the dimensions of the mounting lugs and the footprint of the side walls, correspond to the dimensions of the space defined by the mounting base 10, which in particular characterizes the length dimension of the space defined by the mounting base 10.

According to the battery module 100 for the vehicle of the embodiment of the invention, the ratio of the effective length of the mounting base 10 to the wheelbase of the vehicle satisfies the proportional relationship, so that in the vehicle with the same specification and size, the space for accommodating the battery cell of the vehicle adopting the battery module 100 of the embodiment is larger, the energy density in the unit volume is higher, the energy density of the battery module 100 can be effectively improved, and the driving range of the vehicle is further improved.

Here, it should be noted that the effective length and the effective width of the mounting base 10 of the embodiment of the present application satisfy 0.3 ≦ S1/S2 ≦ 0.95, and 0.4 ≦ W1/W2 ≦ 0.8, respectively, and the occupation ratio of the space for fixing or mounting the pole group 23 in the mounting base 10 is made larger to provide more pole groups 23, thereby improving the energy density of the battery module 100.

Further, the length of the power storage module 20 is S3, and the relationship between the length S3 of the power storage module 20 and the effective length S1 of the mounting base 10 is as follows: S3/S1 is more than or equal to 0.8 and less than or equal to 0.98. In this way, the space for disposing the electricity storage components 20 in the mounting base 10 is made larger, and more electricity storage components 20 can be disposed in the same volume of the battery module 100 to improve the energy density of the battery module 100.

As shown in fig. 5, the baffle plate assembly 22 is configured as a serpentine plate and includes: the U-shaped structure is constructed into a plurality of U-shaped structures, and the U-shaped structures are arranged at intervals; and the connecting plate is arranged between two adjacent U-shaped structures, and at least one of the top wall, the free end of the side wall or the connecting plate of the U-shaped structures is fixedly connected with the inner side wall of the shell 21.

Specifically, the opening direction of each U-shaped structure is the same, and two ends of the connecting plate are respectively connected with one side wall of two adjacent U-shaped structures and the other side wall of the two adjacent U-shaped structures.

Like this, baffle plate assembly 22 is fixed in casing 21 to a plurality of accommodation space are injectd in casing 21, make the setting of utmost point group 23 in casing 21 simpler, convenient, and can improve the structural strength of casing 21, reduce the clearance between the adjacent utmost point group 23, so that can set up more utmost point groups 23 in the casing 21, improve energy density.

Referring to fig. 3, buffer layers 231 are disposed at both sides of the electrode assembly 23, and the buffer layers 231 may be compressed to absorb the expansion amount of the electrode assembly 23 during the charge and discharge of the electrode assembly 23, thereby improving the operation stability of the battery module 100.

See table 1: table 1 is a table of the height of the housing, the thickness of the chamber, the thickness of the pole set 23, T1/T2, T3/T4.

Referring to table 2, table 2 is a table of the width of the vehicle, the wheelbase of the vehicle, the effective width of the mounting base 10, the effective length, the length of the electrical storage assembly 20, and the width.

Referring to table 3, table 3 is a table of ratios of the effective width of the mounting base 10 to the width of the vehicle, the effective length of the mounting base 10 to the width of the vehicle, the width of the electric storage component 20 to the effective width of the mounting base 10, and the length of the electric storage component 20 to the length of the mounting base 10.

	W1/W2	S1/S2	W3/W1	S3/S1
					Range	0.4-0.8	0.3-0.95	0.75-0.95	0.8-0.98
Example 1	0.50	0.62	0.90	0.91
					Example 2	0.54	0.65	0.84	0.91
Example 3	0.57	0.39	0.88	0.88
					Example 4	0.72	0.71	0.84	0.91
Example 5	0.73	0.56	0.90	0.81
					Example 6	0.76	0.88	0.86	0.93

As shown in tables 1-3, in some specific embodiments of the present application, the height T2 of the housing 21 and the thickness T1 of the chambers satisfy 0.05 ≦ T1/T2 ≦ 0.5, the distance T3 between two adjacent chambers and the thickness T4 of the pole group 30 satisfy 0.75 ≦ T4/(T1+ T3) ≦ 0.99, the effective width W1 of the mounting base 10 and the width W2 of the vehicle satisfy 0.4 ≦ W1/W2 ≦ 0.8, the effective width W1 of the mounting base 10 and the width W3 of the electric storage assembly 20 satisfy 0.75 ≦ W3/W9 ≦ 0.95, the effective length S1 of the mounting base 10 and the axial distance S2 of the vehicle satisfy 0.3 ≦ S1/S2 ≦ 0.95, the effective degree S1 of the mounting base 10 and the length S3 of the electric storage assembly 20 satisfy 0.8 ≦ S8740.3698/3698.

That is to say, the width of the vehicle of the embodiment of the present application is 1500mm-2500mm (for example: 953mm, 1080mm, 1095mm, 1447mm, 1472mm, 1545mm), the wheel base is 2000mm-3500mm (for example: 1560mm, 2620mm, 2625mm, 2980mm, 2530mm, 2950mm), and the relevant data of the battery module 100 satisfy the above proportional relationship, so that the space ratio of the battery module 100 can be effectively increased, the energy density of the battery module 100 can be increased, and the cruising range of the vehicle can be increased.

In conclusion, what the electricity storage component 20 of this application accounts for in the mount pad 10 is more reasonable than the ratio of the geometric dimensions of mount pad 10 and vehicle, makes the vehicle that adopts this application battery module 100, compares prior art, under the same specification and dimension, can set up the bigger battery module 100 of volume to improve the continuation of the journey mileage of vehicle effectively.

A vehicle according to an embodiment of the second aspect of the invention includes: the battery module 100 for a vehicle in the above embodiment.

According to the vehicle of the embodiment of the invention, the battery module 100 has the same technical effect as the battery module 100, and the description thereof is omitted.

In the description of the present application, 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 are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

In the description of the present application, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present application, "a plurality" means two or more.

In the description of the present application, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact not directly but via another feature therebetween.

In the description of the present application, the first feature being "on," "above" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means 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 application. 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.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery module (100) for a vehicle, characterized in that an electricity storage component (20) is provided in the battery module (100), the electricity storage component (20) comprising:

the device comprises a shell (21), wherein an accommodating space is arranged in the shell (21);

a baffle assembly (22), the baffle assembly (22) disposed within the accommodation space to divide the accommodation space into a plurality of chambers;

a plurality of pole groups (23), wherein each pole group (23) is arranged in the corresponding cavity; wherein

The chambers are sequentially arranged along the front-back direction, each chamber extends along the left-right direction, the thickness of each chamber is T1, the height of the shell (21) is T2, and the relationship between the thickness T1 of each chamber and the height T2 of the shell (21) is as follows: T1/T2 is more than or equal to 0.05 and less than or equal to 0.5.

2. The battery module (100) for the vehicle according to claim 1, wherein a relationship between a thickness T1 of the cavity and a height T2 of the case (21) is: T1/T2 is more than or equal to 0.1 and less than or equal to 0.4.

3. The battery module (100) for the vehicle according to claim 3, wherein a distance between adjacent two of the chambers is T3, a thickness of the pole group (23) is T4, and a relationship between a thickness T1 of the chambers, a distance T3 between adjacent two of the chambers, and a thickness T4 of the pole group (23) is: T4/(T1+ T3) is not less than 0.75 and not more than 0.99.

4. The battery module (100) for the vehicle according to claim 2, wherein the relationship among the thickness T1 of the chambers, the distance T3 between two adjacent chambers, and the thickness T4 of the pole group (23) is: T4/(T1+ T3) is not less than 0.8 and not more than 0.9.

5. The battery module (100) for a vehicle according to claim 1, further comprising: a mounting base (10), the housing (21) disposed within the mounting base (10), the mounting base (10) having an effective width W1, the vehicle having a width W2, the mounting base (10) having an effective width W1 in relation to the vehicle width W2: W1/W2 is more than or equal to 0.4 and less than or equal to 0.8.

6. The battery module (100) for the vehicle according to claim 5, wherein the width of the electric storage component (20) is W3, and the relationship between the width W3 of the electric storage component (20) and the effective width W1 of the mounting base (10) is: W3/W1 is more than or equal to 0.75 and less than or equal to 0.95.

7. The battery module (100) for the vehicle according to claim 5, wherein the mounting base (10) has an effective length S1, the vehicle has a wheelbase S2, and the effective length S1 of the mounting base (10) and the wheelbase S2 of the vehicle are in a relationship: 0.3-0.95% of S1/S2.

8. The battery module (100) for the vehicle according to claim 7, wherein the length of the power storage assembly (20) is S3, and the relationship between the length S3 of the power storage assembly (20) and the effective length S1 of the mounting base (10) is: S3/S1 is more than or equal to 0.8 and less than or equal to 0.98.

9. The battery module (100) for a vehicle according to claim 1, wherein the baffle plate assembly (22) is configured as a serpentine plate and includes:

the U-shaped structure is constructed into a plurality of U-shaped structures, and the U-shaped structures are arranged at intervals;

the connecting plate is arranged between two adjacent U-shaped structures, and at least one of the top wall, the free end of the side wall or the connecting plate of each U-shaped structure is fixedly connected with the inner side wall of the shell (21).

10. A vehicle, characterized by comprising: the battery module (100) for a vehicle according to any one of claims 1 to 9.