CN215644729U

CN215644729U - Battery module for battery pack and battery pack

Info

Publication number: CN215644729U
Application number: CN202122387543.1U
Authority: CN
Inventors: 宋海阳
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-01-25
Anticipated expiration: 2031-09-29

Abstract

The utility model discloses a battery module for a battery pack and the battery pack, wherein the battery module comprises: the battery comprises a shell, wherein a battery cell accommodating grid suitable for accommodating a battery cell is formed in the shell; the fixing part is arranged at the outer edge of the shell and is suitable for being fixed with the box body of the battery pack; the cell accommodating grid is located between two adjacent fixing parts. According to the battery module for the battery pack, the battery core of the battery module is more compact during installation, the arrangement gap between every two battery cores is reduced, and the overall energy density of the battery module is improved.

Description

Battery module for battery pack and battery pack

Technical Field

The utility model relates to the field of battery packs, in particular to a battery module for a battery pack and the battery pack.

Background

Among the correlation technique, current battery package generally adopts the design of no module, and this design utilizes structures such as steel ribbon, plastics ribbon to bind electric core together usually to form a holistic module, then glue the module on battery package inferior valve or water-cooling version through adhesives such as heat conduction glue, heat conduction structure glue in whole package, but adopt to splice and make the module dismantle the difficulty, be unfavorable for maintaining electric core.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a battery module for a battery pack, in which cells of the battery module are more compact when being mounted, an arrangement gap between each of the cells is reduced, and an overall energy density of the battery module is improved.

The utility model also provides a battery pack with the battery module.

The battery module for a battery pack according to the present invention includes: the battery comprises a shell, wherein a battery cell accommodating grid suitable for accommodating a battery cell is formed in the shell; the fixing part is arranged at the outer edge of the shell and is suitable for being fixed with the box body of the battery pack; the cell accommodating grid is located between two adjacent fixing parts.

According to the battery module for the battery pack, the fixing part of the battery module is arranged at the outer edge of the shell, so that the shell and the box body do not need to be separately fixed on the lower surface of the shell, the cells are ensured to be more compact during installation, the arrangement gap between every two cells is reduced, and the overall energy density of the battery module is improved.

According to one embodiment of the utility model, the housing comprises: the shell comprises a shell body, wherein an accommodating cavity with an open top is formed in the shell body; the partition plates are arranged in the accommodating cavity and are arranged at intervals in a first direction, and the partition plates are connected with the inner wall of the accommodating cavity and divide the accommodating cavity into a plurality of battery cell accommodating grids; the bottom wall of each electric core containing grid is provided with a first matching end and a second matching end which are arranged at intervals in the second direction, the first matching end is just opposite to the first electrode of the electric core, the second matching end is just opposite to the second electrode of the electric core, and the fixing parts are arranged at intervals in the second direction and are just opposite to the first matching end or the second matching end.

According to an embodiment of the present invention, a mounting hole adapted to pass a fastener is formed in the fixing part, and the battery module further includes: a bushing configured as a metal piece and disposed within the mounting hole.

According to one embodiment of the utility model, the thickness of the fixing part is D1, and D1 satisfies the following condition: d1 is more than or equal to 6 mm.

According to one embodiment of the utility model, the thickness of the bushing is D2, and D2 satisfies: d2 is more than or equal to 10 mm.

According to an embodiment of the present invention, both ends of the bushing protrude from the surface of the fixing portion, respectively.

According to one embodiment of the present invention, the cell accommodating compartments are configured as a plurality of rows arranged in sequence in a first direction of the casing and a plurality of columns arranged in sequence in a second direction, wherein a row of the cell accommodating compartments is provided between two adjacent fixing portions, the first direction is a width direction of the casing, and the second direction is a length direction of the casing.

According to an embodiment of the present invention, the battery module further includes: and the battery management unit is fixed on the outer side wall of the shell.

According to one embodiment of the utility model, the fastening part and the housing body are configured as an integrally formed insulating part.

The battery pack according to the present invention is briefly described below.

According to the battery pack provided with the battery module in the embodiment, the battery pack provided with the battery module in the embodiment is more compact in installation of the battery cells, arrangement gaps among the battery cells are reduced, and the overall energy density of the battery pack is improved.

Additional aspects and advantages of the utility model 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 utility model.

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 structural diagram of a housing according to an embodiment of the utility model;

FIG. 3 is an enlarged partial view of circle A of FIG. 2;

fig. 4 is a front view of fig. 2.

Reference numerals:

the battery module (10) is provided with a battery,

a housing 11, a bottom plate 111, a first side plate 112, a second side plate 113, a partition plate 114,

a limiting member 115, a separating member 116, a sampling member 12, a battery management unit 13, a battery cell 14,

bus bar 15, fixing portion 16, mounting hole 161, bushing 162.

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 with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

The battery module 10 for a battery pack according to the embodiment of the present invention including the housing 11 and the fixing part 16 will be described below with reference to fig. 1 to 4. A cell accommodating grid suitable for accommodating the cell 14 is formed in the casing 11, and the fixing part 16 is arranged at the outer edge of the casing 11 and is suitable for being fixed with a box body of a battery pack. The fixing portions 16 are configured in multiple numbers, and the cell accommodating cells are located between two adjacent fixing portions 16.

Specifically, as shown in fig. 1, the battery cell 14 is assembled on the casing 11, wherein a cell accommodating grid is formed in the casing 11, the cell accommodating grid is adapted to accommodate the battery cell 14, and the upper end of the casing 11 is open so as to be adapted to be assembled from the upper end of the battery cell 14. The casing 11 may be made of a hard insulating material, so as to be suitable for protecting the electric core 14 in the electric core accommodation lattice, improve the overall strength of the battery module 10, and ensure that any part of the casing 11 may be provided with lightening holes of any shape under the condition of sufficient strength, thereby reducing the weight of the casing 11 and realizing the light-weight design of the battery module 10. Wherein the battery management unit 13 is provided on the housing 11,

the fixing portion 16 is disposed at the outer edge of the housing 11, and the fixing portion 16 can be fixed to the case of the battery pack, thereby eliminating the hinge structure in the prior art. Further, a box body installation part can be arranged on the box body of the battery pack, optionally, the fixing part 16 and the box body are detachably connected through bolts and threads, or the fixing part 16 and the box body are detachably connected through clamping and inserting. The fixing portion 16 may be configured in a plurality, and the case mounting portion of the battery pack case may be provided in one-to-one correspondence with the plurality of fixing portions 16.

The battery cell holding grids are arranged between the two adjacent fixing portions 16, so that the fixing portions 16 are located at the edges of the battery cell holding grids, the lower surface of the shell 11 is not required to be independently fixed to the shell 11 and the box body, the battery cell 14 is more compact when being installed, the arrangement gap between every two battery cells 14 is reduced, and the overall energy density of the battery module 10 is improved.

In short, according to the battery module 10 for a battery pack of the present invention, the fixing portion 16 of the battery module 10 is disposed at the outer edge of the housing 11, so that it is not necessary to separately fix the housing 11 and the case at the lower surface of the housing 11, thereby ensuring that the cells 14 are more compact when being mounted, reducing the arrangement gap between each cell 14, and improving the overall energy density of the battery module 10.

According to one embodiment of the present invention, the housing 11 includes a housing body and a partition 114. An open-topped receiving cavity is formed in the housing body for fitting the cell 14 from the upper end. The shell body can be made of hard insulating materials, so that the shell body is suitable for protecting the battery core 14 in the accommodating cavity, the overall strength of the battery module 10 is improved, lightening holes in any shape can be formed in any position of the shell body under the condition that enough strength is guaranteed, the weight of the shell body is reduced, and the lightweight design of the battery module 10 is achieved.

Further, the housing body includes a bottom plate 111, a first side plate 112 and a second side plate 113, the bottom plate 111 is disposed at the lowest end of the housing 11, and the bottom plate 111 can be connected to the sampling member 12 and the bus bar 15, the first side plate 112 and the second side plate 113 are respectively disposed at two opposite sides of the bottom plate 111 and fixedly connected to the bottom plate 111, but not limited thereto, the first side plate 112, the second side plate 113 and the bottom plate 111 may be configured as an integrally formed part, and under the condition that sufficient strength is ensured, any part of the first side plate 112, the second side plate 113 and the bottom plate 111 may be provided with a weight-reducing hole of any shape, thereby reducing the weight of the housing 11. The first side plate 112, the second side plate 113 and the bottom plate 111 together define an accommodating cavity.

The separators 114 are disposed in the accommodating cavity and connected to the housing 11, the separators 114 may be configured in plural, the separators 114 are disposed in the accommodating cavity and spaced apart in the first direction, the separators 114 are connected to an inner wall of the accommodating cavity and partition the accommodating cavity into a plurality of cell accommodating compartments suitable for accommodating the cells 14, and the cell accommodating compartments may play a role in positioning. The arrangement is convenient for a worker to install the plurality of battery cores 14 in the battery core accommodating grids respectively so as to be positioned quickly, and the battery cores 14 can be stably placed in the accommodating cavities, so that the assembly efficiency of the battery cores 14 is improved.

The bottom wall of each cell receptacle grid has a first mating end that faces a first electrode of the cell 14 and a second mating end that faces a second electrode of the cell 14, wherein the first and second electrodes may be configured as a positive electrode and a negative electrode of the cell 14. The fixing portions 16 may be spaced apart in the second direction, and the fixing portions 16 may be disposed opposite to the first or second mating ends, so as to reduce the arrangement gap between each of the battery cells 14 and improve the overall energy density of the battery module 10, where the fixing portions 16 are disposed opposite to the first or second mating ends in the first direction, or the fixing portions 16 are disposed opposite to the first or second mating ends in the second direction.

Further, the housing 11 further includes a partition 116, and the partition 116 may partition a plurality of receiving chambers within the housing 11. The upper end of separator 116 can be provided with locating part 115, and locating part 115 ends with the top of electric core 14 and supports to be formed with the direction inclined plane on the locating part 115, when installing electric core 14, can promote the protruding outside bending of joint during the contact of electric core 14 direction inclined plane, in order to be suitable for to install electric core 14 in electric core holds the check.

According to one embodiment of the present invention, the fixing portion 16 extends in a direction away from the housing 11, and a mounting hole 161 is formed on the fixing portion 16, the mounting hole 161 being penetratingly provided on the fixing portion 16 to ensure that a fastener can be passed through the fixing portion 16 and engaged with the mounting hole 161 of the housing 11 on the battery pack housing 11, thereby fixing the battery module 10 on the battery pack.

The battery module 10 further includes a bushing 162, the bushing 162 is configured as a metal member, and the bushing 162 is disposed in the mounting hole 161, wherein an outer wall of the bushing 162 abuts against an inner wall of the fixing portion 16, and an inner wall of the bushing 162 abuts against the fastener, so that the reliability of the fitting of the fixing portion 16 with the fastener can be ensured, and the problem that the fixing portion 16 is crushed due to the pressure generated by the fastener when the battery module 10 and the case of the battery pack are fastened is avoided.

According to an embodiment of the present invention, the thickness of the fixing portion 16 may be D1, and the thickness D1 of the fixing portion 16 may satisfy: d1 is more than or equal to 6 mm. The thickness of the bushing 162 may be D2, and the thickness D2 of the bushing 162 may satisfy: d2 is more than or equal to 10 mm.

According to an embodiment of the present invention, both ends of the bushing 162 protrude from the surface of the fixing part 16, respectively, so as to avoid a problem that the fixing part 16 is partially crushed due to the pressure generated by the fastening member to the fixing part 16 when the battery module 10 and the case of the battery pack are fastened.

According to an embodiment of the present invention, the cell containing grids may be configured as a plurality of rows arranged in sequence in a first direction of the casing 11 and a plurality of columns arranged in sequence in a second direction, wherein a row of the cell containing grids is disposed between two adjacent fixing portions 16, so as to ensure that the fixing portions 16 can be arranged opposite to the first mating end or the second mating end of each cell containing grid, thereby reducing the arrangement gap between each cell 14 and improving the overall energy density of the battery module 10, wherein the first direction is a width direction of the casing 11, and the second direction is a length direction of the casing 11.

According to one embodiment of the utility model, two ends of the outer side of each row of the battery cell accommodating grids are respectively arranged opposite to the two fixing parts 16, so that the fixing parts 16 can be uniformly arranged at the edges of the battery cell accommodating grids, and the stability of the matching between the battery module 10 and the box body of the battery pack is improved.

According to an embodiment of the present invention, the battery module further includes a battery management unit 13, the battery management unit 13 is fixed to an outer side wall of the housing 11, optionally, the battery management unit 13 and the housing 11 are detachably connected by being clamped and inserted, and the battery management unit 13 is fixed to the outer side wall of the housing 11, so that a space occupied by the battery management unit can be reduced, and integration of the battery module is improved.

According to an embodiment of the present invention, the fixing portion 16 and the housing body are configured as an integrally formed insulating member, such that the structural strength of the fixing portion 16 can be improved, the connection stability between the fixing portion 16 and the housing body can be improved, the fitting stability between the battery module 10 and the case of the battery pack can be improved, and the fixing portion 16 and the housing body are configured as an insulating member to be suitable for protecting the battery cell 14 in the accommodating cavity and preventing the battery cell 14 from short circuit.

The battery pack according to the present invention is briefly described below.

According to the battery pack provided with the battery module 10 of the embodiment, the battery pack provided with the battery module 10 of the embodiment is more compact in installation of the battery cells 14, arrangement gaps among the battery cells 14 are reduced, and the overall energy density of the battery pack is improved.

In the description of the present invention, it is to be understood that the terms "central," "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 utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

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

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

In the description of the present invention, 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 with each other not directly but through another feature therebetween.

In the description of the utility model, "above", "over" and "above" a first feature in a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like 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 utility model. 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 utility model 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 utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery module for a battery pack, comprising:

a shell (11), wherein a battery cell accommodating grid suitable for accommodating a battery cell (14) is formed in the shell (11);

the fixing part (16) is arranged at the outer edge of the shell (11) and is suitable for being fixed with the box body of the battery pack; wherein

The fixing parts (16) are configured in a plurality, and the cell accommodating cells are located between two adjacent fixing parts (16).

2. The battery module for a battery pack according to claim 1, wherein the case (11) comprises:

the shell comprises a shell body, wherein an accommodating cavity with an open top is formed in the shell body;

the separators (114) are arranged in the accommodating cavity and are arranged at intervals in a first direction, and the separators are connected with the inner wall of the accommodating cavity and divide the accommodating cavity into a plurality of battery cell accommodating grids; wherein

The bottom wall of each electric core containing grid is provided with a first matching end and a second matching end which are arranged at intervals in the second direction, the first matching end is right opposite to a first electrode of an electric core (14), the second matching end is right opposite to a second electrode of the electric core (14), and the fixing parts (16) are arranged at intervals in the second direction and are right opposite to the first matching end or the second matching end.

3. The battery module for a battery pack according to claim 1, wherein the fixing portion (16) has a mounting hole (161) formed therein for a fastener to pass through, the battery module further comprising: a bushing (162), the bushing (162) configured as a metal piece and disposed within the mounting hole (161).

4. The battery module for a battery pack according to claim 3, wherein the fixing part (16) has a thickness D1, D1 satisfying: d1 is more than or equal to 6 mm.

5. The battery module for a battery pack, as set forth in claim 3, wherein the bushing (162) has a thickness D2, D2 satisfying: d2 is more than or equal to 10 mm.

6. The battery module for a battery pack according to claim 3, wherein both ends of the bushing (162) protrude from the surface of the fixing part (16), respectively.

7. The battery module for a battery pack according to claim 1, wherein the cell accommodating compartments are configured in a plurality of rows arranged in sequence in a first direction of the housing (11), and a plurality of rows arranged in sequence in a second direction, wherein a row of the cell accommodating compartments is provided between two adjacent fixing portions (16), the first direction is a width direction of the housing (11), and the second direction is a length direction of the housing (11).

8. The battery module for a battery pack according to claim 1, further comprising: and the battery management unit is fixed on the outer side wall of the shell.

9. The battery module for a battery pack according to any one of claims 1 to 8, wherein the fixing portion (16) is configured as an integrally molded insulator with the case body.

10. A battery pack comprising the battery module according to any one of claims 1 to 9.