CN212967860U

CN212967860U - Battery module

Info

Publication number: CN212967860U
Application number: CN202020824170.2U
Authority: CN
Inventors: 郭立立; 席兵荣; 程志刚; 夏清松; 王明旺; 王华文
Original assignee: Sunwoda Electric Vehicle Battery Co Ltd
Current assignee: Xinwangda Power Technology Co ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2021-04-13
Anticipated expiration: 2030-05-15

Abstract

The present disclosure relates to a battery module including battery cells arranged in a thickness direction thereof to form a battery pack; the module base comprises a bottom plate, a first side enclosing frame and a first end enclosing frame, the bottom plate, the first side enclosing frame and the first end enclosing frame form a cavity for accommodating the battery pack, and the height of the first side enclosing frame is lower than that of the first end enclosing frame; electric isolator encloses frame, second end including electric isolator body, second side and encloses the frame, the electric isolator body the second side encloses the frame the second end encloses the frame and forms and hold the cavity of group battery, the second side encloses the frame height and is less than the second end encloses the frame height, the electric isolator the group battery the module base connects gradually. The battery module that this disclosure provided can reduce the module temperature, make temperature distribution even, can reduce module weight simultaneously, and then improves battery module's security and energy density, reduce cost.

Description

Battery module

Technical Field

The utility model relates to an electric automobile battery field specifically relates to a battery module.

Background

In a power battery, the safety of the battery pack is closely related to the thermal management system of the battery. The temperature is an important factor influencing the electric quantity and the service life of the battery module, so that a related technical means is required to be adopted, the battery core works at a proper temperature, and the temperature distribution of the battery module is ensured to be uniform. In the battery heat management mode, the air cooling mode is paid much attention due to the advantages of large heat exchange area, high safety, light weight, low cost and the like, but in the air cooling module at present, the problems of light weight and uneven temperature of the module are still overcome in the industry.

SUMMERY OF THE UTILITY MODEL

The purpose of the disclosure is to provide a battery module, which has no side plate, and a channel is formed between single batteries, so that the temperature of the module can be reduced, the temperature distribution is uniform, the weight of the module is reduced, the safety and the energy density of the battery module are improved, and the cost is reduced.

In order to achieve the above object, the present disclosure provides a battery module including battery cells arranged in a thickness direction thereof as a battery pack, further including:

the module base comprises a bottom plate, a first side enclosing frame and a first end enclosing frame, the bottom plate, the first side enclosing frame and the first end enclosing frame form a cavity for accommodating the battery pack, and the height of the first side enclosing frame is lower than that of the first end enclosing frame;

the electric isolation plate comprises an electric isolation plate body, a second side enclosure frame and a second end enclosure frame, wherein the electric isolation plate body, the second side enclosure frame and the second end enclosure frame form a cavity for accommodating the battery pack, and the height of the second side enclosure frame is lower than that of the second end enclosure frame;

the electric isolation plate, the battery pack and the module base are sequentially connected.

Optionally, when the electrical isolation plate is connected with the module base, the first end enclosure frame is connected with the second end enclosure frame in a buckling manner, and/or the first end enclosure frame is glued.

Optionally, the module base further includes a first spacer, and the electrical isolation plate further includes a second spacer, and the first spacer and the second spacer divide the chamber into a plurality of small chambers for accommodating the battery cells.

Optionally, the height ranges of the first isolation piece and the second isolation piece are both 0.5-1.5 cm.

Optionally, in the module base, the bottom plate, the first side enclosure frame, the first end enclosure frame, and the first partition are integrally formed; in the electric isolation plate, the electric isolation plate body, the second side enclosure frame, the second end enclosure frame and the second isolation piece are integrally formed.

Optionally, the module base and the electrical isolation plate are made of non-metallic materials.

Optionally, a fastening piece and a positioning column are arranged on the upper surface of the first end enclosure frame; the second end enclosure frame is provided with a clamping groove and a positioning hole; the clamping piece is matched and connected with the clamping groove, and the positioning column is matched and fixed with the positioning hole.

Optionally, each small chamber is provided with a gluing area.

Optionally, the battery module still includes the mounting, the mounting is the sheetmetal, the mounting with the frame phase-match is enclosed to first end, the mounting lid is established first end encloses the frame surface.

Optionally, the fixing member is provided with two mounting holes.

Optionally, the battery module further comprises a protective cover, and the protective cover is covered on the electrical isolation plate body; the protective cover is provided with a plurality of protruding parts, the electrical isolation plate body is provided with a plurality of grooves matched with the protruding parts, and the protruding parts are buckled and pressed in the grooves to connect the protective cover above the electrical isolation plate body.

According to the module, the electrical isolation plate and the side wall frame of the base are arranged to be lower than the end wall frame, when the electrical isolation plate is connected with the module base, the electrical isolation plate is connected with the end wall frame of the module base, and an opening is formed in the side face of the module, so that the temperature of the module can be reduced, the safety of the module is improved, and the service life of the module is prolonged; the weight of the module can be reduced, the energy density of the module is improved, and the cost of the module is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is an exploded view of a battery module structure;

FIG. 2 is a schematic diagram of a module base according to an embodiment;

FIG. 3 is a front view of an embodiment of an electrical isolation plate structure;

FIG. 4 is a reverse side view of an embodiment of an electrical isolation plate structure;

FIG. 5 is a schematic view of a protective cover according to one embodiment;

FIG. 6 is a schematic view of one embodiment of a fastener.

Description of the reference numerals

1. Battery pack 11 and battery cell

2. Module base 21, first end enclosure frame

22. First side enclosure frame 23 and first spacer

24. Bottom plate 25, glue applying area

26. Chamber 261, Chamber

27. Positioning column 28 and fastener

3. Electric isolation plate 31, second end enclosure frame

32. Second side enclosure frame 33, electrical isolation plate body

34. Groove 35, positioning hole

36. Fastening groove 4 and protective cover

41. Bulge 5, mounting

51. Mounting hole

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise specified, the use of directional terms such as "upper, lower, left, right" and "above" generally refer to orientations and positional relationships illustrated in the drawings, for convenience in describing the present invention and to simplify the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. "first, second" are generally referred to for descriptive purposes and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 to 6, the present disclosure provides a battery module including a plurality of battery cells 11 arranged in a thickness direction thereof to form a battery pack 1;

the module base 2 comprises a bottom plate 24, a first side enclosing frame 22 and a first end enclosing frame 21, wherein the bottom plate 24, the first side enclosing frame 22 and the first end enclosing frame 21 form a cavity 26 for accommodating the battery pack 1, and the height of the first side enclosing frame 22 is lower than that of the first end enclosing frame 21; the height range of the first side surrounding frame 22 is 0-1.5 cm, when the height of the first side surrounding frame 22 is zero, the battery module is of a structure without side plates, the weight of the battery module is reduced to the maximum extent, as shown in fig. 1 and 2, in the embodiment, the height of the first side surrounding frame 22 is 1cm, so that the battery module can be fixed better; the height of the first end enclosure frame 21 is equal to 1/2 the height of the battery pack 1 plus the thickness of the bottom plate 24;

the electric isolation plate 3 comprises an electric isolation plate body 33, a second side enclosure frame 32 and a second end enclosure frame 31, the electric isolation plate body 33, the second side enclosure frame 32 and the second end enclosure frame 31 form a cavity 26 for accommodating the battery pack 1, and the height of the second side enclosure frame 32 is lower than that of the second end enclosure frame 31; the height range of the second side enclosure frame 32 is consistent with the height range of the first side enclosure frame 22, in this embodiment, the height of the second side enclosure frame 32 is 1 cm; the height of the second enclosure frame 31 is equal to 1/2 the height of the battery pack 1 and the electrical isolation plate body 33.

Group battery 1 is fixed on

module base

2, 3 lids of electrical isolation board are in 1 top of group battery, electrical isolation board 3 is connected with module base 2, then enclose the frame 21 and the second end for first end and enclose the connection of frame 31, enclose the frame 21 and the second end when first end and enclose the frame 31 and be connected the back, because first side encloses frame 22, the second side encloses the height that frame 32 highly is less than first end and encloses frame 21 and second end and enclose frame 31, then two sides of battery module form respectively and form a big through-hole that ventilates, for gas business turn over group battery 1, play the low temperature effect that reduces.

Further, frame 21 is enclosed for the buckle with second end to first end encloses frame 31 and is connected, also can be for connecting with the colloid, in order to make the installation of battery module more fastening, then the buckle is connected and is adopted jointly with the colloid.

The module base 2 further comprises a first isolating piece 23, the electric isolation board 3 further comprises a second isolating piece 37, the first isolating piece 23 and the second isolating piece 37 divide the cavity 26 into a plurality of small cavities 261 for accommodating the battery cells 11, each battery cell 11 is correspondingly installed in each small cavity 261, the installation of the battery cells 11 can be more stable, meanwhile, the battery cells 11 expand with heat and contract with cold during working, and the adjacent battery cells 11 cannot be affected.

The height ranges of the first spacer 23 and the second spacer 37 are 0.5-1.5 cm. In this embodiment, the height of the first side frame 22 is equal to the height of the first spacer 23, and the height of the second side frame 32 is equal to the height of the second spacer 37, which are all 1 cm. Form heat dissipation channel between the battery monomer 11, during gaseous accessible battery module side's big via hole business turn over each passageway, the temperature accessible of every battery monomer 11 is cooled down through gaseous circulation, and this heat dissipation channel forms in every battery monomer 11 both sides, can make battery module's temperature distribution more even.

In the module base 2, a bottom plate 24, a first side enclosing frame 22, a first end enclosing frame 21 and a first isolating piece 23 are integrally formed; in the electrical isolation plate 3, an electrical isolation plate body 33, a second side frame 32, a second end frame 31, and a second isolator 37 are integrally formed.

In order to reduce the weight of the module, the module base 2 and the electrical isolation plate 3 are made of non-metal materials, such as PC plastic materials, so that the insulativity of the battery module is improved, and the module cost is reduced.

The upper surface of the first end enclosure frame 21 is provided with a fastener 28 and a positioning column 27; the second end enclosure frame 31 is provided with a fastening groove 36 and a positioning hole 35; the fastening member 28 is connected with the fastening groove 36 in a matching manner, the positioning column 27 is fixed with the positioning hole 35 in a matching manner, and meanwhile, the contact surfaces of the first end surrounding frame 21 and the second end surrounding frame 31 can be bonded by using structural adhesive, so that the battery module is more stable.

Battery cell 11 adopts the mode of gluing fixed with module base 2, electrical isolation board 3, and optional UV glues, fast dry glue, AB glue etc. uses UV glue in this embodiment. Be equipped with in every loculus 261 and glue district 25, glue district 25 and set up on every face of loculus 261, can set up at side or bottom surface, in this embodiment, glue district 25 and set up on four sides of loculus 261, and the distance of gluing district 25 to the electric isolation board body is 7 mm. In electrical isolation board 3, it is long banding to beat gluey district 25, distribute on every lateral wall of loculus 261, and beat gluey district 25 and be end to end connection's continuum region, with battery monomer 11 upper surface seal, make inside the unable infiltration group battery 1 of gas, be equipped with integrated into one piece's exhaust passage on the electrical isolation board body 33, spout from explosion-proof valve when gaseous, directly outside the exhaust passage discharge battery module, so the height of second side enclosure frame 32 sets up to 1cm, can beat gluey on every lateral wall of loculus 261, improve the leakproofness.

The battery module still includes mounting 5, and mounting 5 is the sheetmetal, and mounting 5 encloses frame 21 phase-match with first end, and mounting 5 passes through the nut to be installed and encloses the frame 21 surface at first end. Metal mounting 2 can bear certain assembly pressure, compensaties the less not enough of 2 intensity of plastic module base, and metal material can absorb certain expend with heat and contract with cold size simultaneously, improves battery module's security.

Further, the fixing member 5 is provided with two mounting holes 51, as shown in fig. 6, the number of the mounting holes 51 is two. The mounting holes 51 are used for mounting and fixing the battery module and the battery case.

The battery module further comprises a protective cover 4, and the protective cover 4 is covered on the electrical isolation plate body 33; as shown in fig. 5, the protective cover 4 is provided with a plurality of protrusions 41 protruding toward the lower surface of the protective cover 4; the projections 41 are rectangular and arranged in sequence around the edge of the protective cover 4. Meanwhile, the electrical isolation plate body 33 is provided with a plurality of grooves 34 matched with the protruding portions 41, the protruding portions 41 can be just buckled in the grooves 34, and the protective cover 4 is connected above the electrical isolation plate body 33, so that the electrical isolation plate is convenient to install.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure. For example, the module base can be changed into a structure comprising a bottom plate and an end enclosure frame, the electrical isolation plate comprises an electrical isolation plate body and an end enclosure frame, and the electrical isolation plate and the module base are connected in a buckling mode to completely wrap the battery pack.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention, for example, the electrical separator body of the electrical separator may be replaced by any separator; the side enclosing frame, the end enclosing frame and the isolating piece in the electric isolating plate and the module base can adopt mechanical connection, glue joint and the like. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. The utility model provides a battery module, includes the battery monomer, arranges into the group battery along its thickness direction, its characterized in that still includes:

2. The battery module according to claim 1, wherein when the electrical isolation plate is connected to the module base, the first end enclosure frame and the second end enclosure frame are connected by a snap fit and/or an adhesive.

3. The battery module of claim 1, wherein the module base further comprises a first spacer, and the electrical separator plate further comprises a second spacer, the first and second spacers dividing the chamber into a plurality of small chambers that house the battery cells.

4. The battery module according to claim 3, wherein the first and second spacers each have a height in the range of 0.5-1.5 cm.

5. The battery module according to any one of claims 3 to 4, wherein the bottom plate, the first side enclosure frame, the first end enclosure frame, and the first separator are integrally formed in the module base; in the electric isolation plate, the electric isolation plate body, the second side enclosure frame, the second end enclosure frame and the second isolation piece are integrally formed, and the module base and the electric isolation plate are made of non-metal materials.

6. The battery module as recited in claim 5, wherein the first end frame has a fastening member and a positioning post on the top surface thereof; the second end enclosure frame is provided with a clamping groove and a positioning hole; the clamping piece is matched and connected with the clamping groove, and the positioning column is matched and fixed with the positioning hole.

7. The battery module according to claim 3, wherein each small chamber is provided with a gluing area.

8. The battery module according to claim 1, further comprising a fixing member, wherein the fixing member is made of metal sheet, the fixing member is matched with the first end surrounding frame, and the fixing member is covered on the outer surface of the first end surrounding frame.

9. The battery module as set forth in claim 8, wherein the fixing member is provided with two mounting holes.

10. The battery module according to claim 1, further comprising a protective cover provided on the electrical separator body; the protective cover is provided with a plurality of protruding parts, the electrical isolation plate body is provided with a plurality of grooves matched with the protruding parts, and the protruding parts are buckled and pressed in the grooves to connect the protective cover above the electrical isolation plate body.