CN217656005U

CN217656005U - Battery module and power battery

Info

Publication number: CN217656005U
Application number: CN202221691756.1U
Authority: CN
Inventors: 曲凡多; 陈荣康; 郑慧苗; 王锋锋; 徐茂
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-10-25
Anticipated expiration: 2032-06-30

Abstract

The utility model discloses a power battery and battery module. The battery module includes: first panel, second panel, frame and a plurality of electric core, the frame encircles and sets up and be formed with two openings, and two openings are spaced each other and the orientation is opposite, and first panel is connected the frame and is sealed one of them opening, and the frame is connected to the second panel and is sealed another opening, and the interval between two openings forms accommodating space, and a plurality of electric cores are arranged and are set up and accommodate in accommodating space. Above-mentioned battery module is injectd through the connection between first panel, second panel and the frame for battery module has better structural strength, makes a plurality of electric cores can have good integrality in battery module.

Description

Battery module and power battery

Technical Field

The utility model relates to a battery technology field, in particular to battery module and power battery.

Background

In the related art, a plurality of cells are integrally provided to form a battery module. When encapsulating the battery module, need carry out more processes, and the battery module after the encapsulation has whole discontinuous condition easily to lead to whole battery module's structural strength to hang down.

SUMMERY OF THE UTILITY MODEL

The utility model discloses embodiment provides a battery module and power battery.

The utility model discloses embodiment's a battery module, include:

a first panel;

a second panel;

the frame, the frame encircles and sets up and is formed with two openings, two openings are mutual interval and opposite orientation, first panel is connected the frame and seals one of them opening, the second panel is connected the frame and seals another opening, the interval between two openings forms accommodating space. And

the battery cells are arranged and contained in the containing space.

Above-mentioned battery module is injectd through the connection between first panel, second panel and the frame for battery module has better structural strength, makes a plurality of electric cores can have good integrality in battery module.

In some embodiments, the projected area of the first panel is greater than the projected area of the second panel along the orientation of the opening.

In some embodiments, the cross-sectional area of the receiving space along the direction of the opening is larger than the projected area of the second panel.

In some embodiments, a projected area of the first panel is larger than a cross-sectional area of the receiving space along an orientation of the opening.

In certain embodiments, the first panel has a thermal conductivity greater than 0.3 watts/(meter kelvin) and/or the second panel has a thermal conductivity greater than 0.3 watts/(meter kelvin) along the orientation of the opening.

In certain embodiments, the first panel has a thermal conductivity of less than 4 watts/(meter kelvin), and/or the second panel has a thermal conductivity of less than 4 watts/(meter kelvin).

In some embodiments, the first panel is connected to the bezel by at least one of: adhesive connection, threaded connection, buckle connection, clamping groove connection, interference connection and welding; and/or the presence of a gas in the gas,

the second panel is connected with the frame in at least one of the following modes: adhesive connection, threaded connection, buckle connection, clamping groove connection, interference connection and welding.

In certain embodiments, the arrangement direction of the plurality of battery cells is parallel to the thickness direction of the battery cells, or the arrangement direction of the battery cells forms an included angle with the thickness direction of the battery cells.

In some embodiments, the end portions of the plurality of battery cells are provided with insulation structures, the insulation structures are arranged in the accommodating spaces, and gaps are formed between the insulation structures and the frames.

The utility model discloses embodiment's a power battery, power battery includes:

the battery module according to any one of the above embodiments.

Above-mentioned power battery is injectd through the connection between first panel, second panel and the frame for the battery module has better structural strength, makes a plurality of electric cores can have good integrality in the battery module.

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

The above and/or additional aspects and advantages of the present invention 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 structural view of a battery module according to an embodiment of the present invention;

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

FIG. 3 isbase:Sub>A cross-sectional view taken along A-A of FIG. 2;

FIG. 4 is an enlarged view of section I of FIG. 3;

fig. 5 is another schematic structural diagram of the battery module according to the embodiment of the present invention;

fig. 6 is a schematic view of another structure of the battery module according to the embodiment of the present invention.

Description of reference numerals: 100. a battery module; 200. a power battery; 14. a first panel; 16. a second panel; 18. a frame; 20. an opening; 22. an upper opening; 24. a lower opening; 26. a convex edge; 28. an accommodating space; 30. an electric core; 32. a cross beam; 34. inter-cell; h1, width.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, 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 by referring to the drawings are exemplary only for the purpose of explaining the embodiments of the present invention, and are not to be construed as limiting the embodiments of the present invention.

In embodiments of the present invention, the first feature "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 not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the invention. In order to simplify the disclosure of embodiments of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Embodiments of the present invention may repeat reference numerals and/or reference letters in the various examples for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, embodiments of the present invention provide examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1 to 6, a battery module 100 according to an embodiment of the present invention includes a first panel 14, a second panel 16, a frame 18, and a plurality of battery cells 30.

The frame 18 is disposed around and formed with two openings 20, the two openings 20 are spaced from each other and face opposite to each other, the first panel 14 is connected to the frame 18 and closes one of the openings 20, the second panel 16 is connected to the frame 18 and closes the other opening 20, and the space between the two openings 20 forms a receiving space 28 for receiving a plurality of battery cells 30. A plurality of battery cells 30 are arranged and housed in the housing space 28.

The battery module 100 is defined by the connection between the first panel 14, the second panel 16 and the frame 18, so that the battery module 100 has better structural strength, and the plurality of battery cells 30 can have good integrity in the battery module 100.

Specifically, referring to fig. 1 and 4, the battery module 100 is provided with a first panel 14, and the first panel 14 is disposed on the lower bottom surface of the plurality of battery cells 30. The battery module 100 is further provided with a second panel 16, and the second panel 16 is disposed on the upper surfaces of the plurality of battery cells 30.

The battery module 100 is provided with a frame 18 around an area where the plurality of battery cells 30 are disposed, the frame 18 is disposed around the plurality of battery cells 30 and forms two openings 20, the two openings 20 may include an upper opening 22 and a lower opening 24, a convex edge 26 is disposed around the opening 20 on an upper surface of the frame 18, the convex edge 26 is fixedly connected with an upper surface of the frame 18 and partially blocks the upper opening 22, the second panel 16 may be mounted on the convex edge 26 to close the upper opening 22, the first panel 14 may be mounted on a lower bottom surface of the frame 18 to close the lower opening 24, the battery module 100 has a good structural strength by connection cooperation between the first panel 14, the second panel 16 and the frame 18, a sealed accommodating space 28 for accommodating the plurality of battery cells 30 may be formed, the battery module is provided with the plurality of battery cells 30, and the plurality of battery cells 30 are arranged and accommodated in the accommodating space 28, so that the plurality of battery cells 30 have good integrity.

In some embodiments, referring to fig. 3 and 4, the projected area of the first panel 14 is greater than the projected area of the second panel 16 along the orientation of the opening 20. In this way, the first panel 14 can have a sufficient bearing area to support a plurality of battery cells 30.

Specifically, the projected area of the first panel 14 may be denoted as S1. The projected area of the second panel 16 may be denoted as S2. The facing directions of the openings 20 may be denoted as A1 and A2. The first panel 14 may be mounted on the lower bottom surface of the frame 18 to close the lower opening 24, and the plurality of battery cells 30 may be placed on the first panel 14, and along the direction of the opening 20, the edge of the first panel 14 exceeds the edge of the second panel 16 by 10mm to 60mm, so that the projection area of the first panel 14 is larger than the projection area of the second panel 16, and thus it may be ensured that the first panel 14 has a sufficient bearing area to bear all the battery cells 30. Wherein mm is a length unit millimeter.

In some embodiments, the cross-sectional area of the receiving space 28 is greater than the projected area of the second panel 16 along the orientation of the opening 20. In this manner, the second panel 16 may be easily installed to close the upper opening 22.

Specifically, the cross-sectional area of the housing space 28 may be denoted as S3. In the embodiment shown in fig. 4, the second panel 16 can be inserted along the lower opening 24 toward the upper opening 22, and along the direction of the opening 20, the projected area of the second panel 16 is smaller than the cross-sectional area of the frame 18 enclosing the receiving space 28, and the edge of the second panel 16 is between 2mm and 50mm from the inner surface of the frame 18, so as to facilitate the installation of the second panel 16 to close the upper opening 22.

Referring to fig. 4, in some embodiments, the projected area of the first panel 14 along the direction of the opening 20 is larger than the cross-sectional area of the accommodating space 28. In this manner, the first panel 14 can be snugly mounted to the lower bottom surface of the rim 18.

Specifically, along the direction of the opening 20, the projected area of the first panel 14 may be larger than the cross-sectional area of the frame 18 enclosing the receiving space 28, the edge of the first panel 14 exceeds the inner surface of the frame 18 by between 2mm and 40mm, and the first panel 14 may be mounted on the lower bottom surface of the frame 18 in a close fit manner.

In certain embodiments, the first panel 14 has a thermal conductivity greater than 0.3 watts/(meter kelvin) and/or the second panel 16 has a thermal conductivity greater than 0.3 watts/(meter kelvin) along the orientation of the opening 20. In this manner, the plurality of battery cells 30 may be cooled or heated.

Specifically, in one embodiment, the first panel 14 has a thermal conductivity greater than 0.3 watts/(meter Kelvin), in one embodiment, the second panel 16 has a thermal conductivity greater than 0.3 watts/(meter Kelvin), and in one embodiment, the first panel 14 and the second panel 16 have a thermal conductivity greater than 0.3 watts/(meter Kelvin). The first and

second panels

14, 16 may be thermal management cooling or heating panels so that the plurality of cells 30 may be cooled or heated.

In certain embodiments, the first panel 14 has a thermal conductivity of less than 4 watts/(meter Kelvin), and/or the second panel 16 has a thermal conductivity of less than 4 watts/(meter Kelvin). Thus, the battery module 100 has good heat insulation performance and collision energy absorption function.

Specifically, in one embodiment, the first panel 14 has a thermal conductivity of less than 4 watts/(meter Kelvin), in one embodiment, the second panel 16 has a thermal conductivity of less than 4 watts/(meter Kelvin), and in one embodiment, the first panel 14 and the second panel 16 have a thermal conductivity of less than 4 watts/(meter Kelvin). The first and

second panels

14 and 16 may be heat insulating materials, such as glass fiber reinforced resin plates or carbon fiber reinforced resin plates, or multi-layer composite sandwich materials, such as PP honeycombs, aluminum honeycombs, aramid honeycombs, etc., which are made of composite materials or metal panels on both sides of the middle layer, and sandwich foamed aluminum plates and non-metal foamed sandwich plates, etc., so that the battery module 100 has good heat insulating and heat preserving performance and functions of collision energy absorption.

In some embodiments, referring to fig. 4, the first panel 14 is connected to the frame 18 by at least one of: adhesive connection, threaded connection, buckle connection, clamping groove connection, interference connection and welding; and/or, the second panel 16 is connected to the bezel 18 by at least one of: adhesive connection, threaded connection, buckle connection, clamping groove connection, interference connection and welding. Thus, the battery module 100 has better structural strength, and the plurality of battery cells 30 are prevented from being damaged.

Specifically, in one embodiment, the first panel 14 may be connected to the frame 18 by an adhesive connection, a threaded connection, a snap connection, a slot connection, an interference connection, or a weld, in one embodiment, the second panel 16 may be connected to the frame 18 by an adhesive connection, a threaded connection, a snap connection, a slot connection, an interference connection, or a weld, and in one embodiment, the first panel 14 and the second panel 16 may be connected to the frame 18 by an adhesive connection, a threaded connection, a snap connection, a slot connection, an interference connection, or a weld.

In the embodiment shown in fig. 4, the edge of the first panel 14 beyond the inner surface of the frame 18 is adhesively attached to the lower surface of the frame 18, and the second panel 16 is adhesively attached to the side of the ledge 26 facing the lower opening 24, so that the first panel 14 can abut against the plurality of battery cells 30, the pressing force is transmitted to the second panel 16, the contact force between the second panel 16 and the ledge 26 is increased, and the battery module 100 has better structural strength and prevents the plurality of battery cells 30 from being damaged.

In some embodiments, referring to fig. 6, the arrangement direction of the plurality of battery cells 30 is parallel to the thickness direction of the battery cells 30, or the arrangement direction of the battery cells 30 forms an angle with the thickness direction of the battery cells 30. As such, the number of the plurality of battery cells 30 may be increased.

Specifically, the arrangement direction of the battery cells 30 may be denoted as B1, and the thickness direction of the battery cells 30 may be denoted as B2. The thickness of the cell 30 formed in the B2 direction may be denoted as H1. The plurality of battery cells 30 are sequentially arranged in the accommodating space 28, in one embodiment, the arrangement direction of the battery cells 30 is parallel to the thickness direction of the battery cells 30, and in one embodiment, the arrangement direction of the battery cells 30 forms an included angle with the thickness direction of the battery cells 30, and the included angle may be 20 ° to 90 °. In the embodiment shown in fig. 6, the cells 30 are arranged in two rows. In other embodiments, the number and the arrangement direction of the battery cells 30 may be adjusted according to specific situations.

It is understood that the cells 30 may be arranged in a single row or in multiple rows. The direction of alignment may also be considered to be an oblique or lateral arrangement and is not specifically limited herein.

In some embodiments, the ends of the plurality of battery cells 30 are provided with an insulating structure (not shown). The insulating structure is disposed in the receiving space 28. The insulating structure forms a gap with the rim 18. As such, assembly may be facilitated while preventing a plurality of battery cells 30 from being displaced significantly.

Specifically, the side surfaces of the plurality of battery cells 30 adjacent to the inner surface of the frame 18 form the end portions of the plurality of battery cells 30. The ends of the plurality of battery cells 30 may be provided with an insulating structure, and the insulating structure is placed in the accommodating space 28 along with the plurality of battery cells 30, and after being assembled to the ends of the plurality of battery cells 30, the insulating structure may form a gap with the inner surface of the frame 18. The width of the gap may be between 0.5mm and 20 mm. By reserving a smaller gap, assembly may be facilitated while preventing a plurality of cells 30 from producing a larger displacement.

The utility model discloses a power battery 200 of embodiment, power battery 200 include the battery module 100 of any above-mentioned embodiment.

The power battery 200 is defined by the connection between the first panel 14, the second panel 16 and the frame 18, so that the battery module 100 has better structural strength, and the plurality of battery cells 30 can have good integrity in the battery module 100.

Specifically, the power battery 200 may include a vehicle battery system, and may also be another power battery, which is not limited in particular herein. Through the connection cooperation between first panel 14, second panel 16 and frame 18 for battery module 100 has better structural strength, can form a sealed accommodating space 28 that accommodates a plurality of battery cores 30, thereby makes a plurality of battery cores 30 can have good integrality in battery module 100.

More specifically, the battery module 100 according to the embodiment of the present invention may be implemented by referring to the following examples, which are only for the convenience of understanding and implementing the technical solution of the present invention, and should not be construed as limiting the scope of the present invention.

The frame 18 may be a placement area constructed for the battery cell 30 in the vehicle body or the vehicle chassis, and the frame 18 may be a part of the vehicle body or the vehicle chassis, and with such a design, the first panel 14 or the second panel 16 may also be a part of the vehicle passenger compartment floor.

In the embodiment shown in fig. 5, the frame 18 of the battery module 100 may form one placement area for placing the battery cells 30, or may form a plurality of placement areas for placing the battery cells 30. In the embodiment shown in fig. 5, the rim 18 is provided with a cross member 32. The beam 32 divides the housing space 28 into a plurality of small sections 34. Each cell 34 may be provided with a module formed by a plurality of battery cells 30.

In addition, the battery cell 30 may be directly or indirectly bonded to the first panel 14 or the second panel 16, and the indirect bonding means that an insulating material or a heating film or a cooling plate or a heat insulating layer is provided between the battery cell 30 and the panels, that is, an insulating board may be formed as the first panel 14 and/or the second panel 16, and a cooling plate is additionally added between the insulating board and the battery cell 30 to be bonded to the battery cell 30 and the insulating board, respectively, so as to achieve the indirect bonding between the first panel 14 or the second panel 16 and the battery cell 30; in another example, the first panel 14 and/or the second panel 16 are cooling plates, and the application of a heating film to the cell 30 also forms an indirect bond to the cell 30.

In the description of the present specification, reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "example", "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 present invention. In this specification, schematic representations of the above terms 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 invention 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 invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a battery module for power battery, its characterized in that includes:

a first panel;

a second panel; and

the frame is arranged in a surrounding mode and is provided with two openings, the two openings are spaced from each other and face opposite directions, the first panel is connected with the frame and closes one opening, the second panel is connected with the frame and closes the other opening, and an accommodating space is formed between the two openings at a spacing; and

and the battery cells are arranged and contained in the containing space.

2. The battery module according to claim 1, wherein a projected area of the first panel is larger than a projected area of the second panel in an orientation of the opening.

3. The battery module according to claim 1, wherein the cross-sectional area of the receiving space is larger than the projected area of the second panel in the direction of the opening.

4. The battery module according to claim 1, wherein a projected area of the first panel is larger than a cross-sectional area of the receiving space in an orientation of the opening.

5. The battery module according to claim 1, wherein the first face sheet has a thermal conductivity greater than 0.3 Watts/(meter Kelvin), and/or the second face sheet has a thermal conductivity greater than 0.3 Watts/(meter Kelvin).

6. The battery module according to claim 1, wherein the first face sheet has a thermal conductivity of less than 4 Watts/(meter Kelvin), and/or the second face sheet has a thermal conductivity of less than 4 Watts/(meter Kelvin).

7. The battery module according to claim 1, wherein the first panel is connected to the frame by at least one of: adhesive connection, threaded connection, buckle connection, clamping groove connection, interference connection and welding; and/or the presence of a gas in the gas,

8. The battery module of claim 1, wherein the arrangement direction of the plurality of battery cells is parallel to the thickness direction of the battery cells, or an included angle is formed between the arrangement direction of the battery cells and the thickness direction of the battery cells.

9. The battery module according to claim 1, wherein end portions of the plurality of battery cells are provided with insulation structures, the insulation structures are arranged in the accommodating spaces, and gaps are formed between the insulation structures and the frame.

10. A power cell, characterized in that the power cell comprises:

the battery module according to any one of claims 1 to 9.