CN215644876U

CN215644876U - Battery module and battery pack

Info

Publication number: CN215644876U
Application number: CN202122383119.XU
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 and a battery pack, wherein the battery module comprises: a housing in which a plurality of cell receiving compartments are formed; the battery cells are configured into a plurality of battery cells and are arranged in the corresponding battery cell accommodating grids; the busbar is arranged on the bottom wall of the battery cell accommodating grid and is suitable for being abutted against one end of the battery cell; and the limiting part is arranged on the shell and is suitable for being abutted against the other end of the battery cell. According to the battery module, the battery core is limited by the busbar and the limiting piece, so that the battery core is convenient to mount or dismount, the assembly time is saved, and the battery module is convenient to maintain.

Description

Battery module and battery pack

Technical Field

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

Background

In the related art, the battery cell and the busbar of the battery system are fixed by welding, and when the battery cell and the busbar are assembled, the pole of the battery cell and the busbar are welded by a welding gun, so that the battery cell is fixed on the busbar and current is transmitted, welding equipment needs to be purchased to fix the battery cell and the busbar by adopting a welding mode, the manufacturing cost of the battery system is increased, the assembly difficulty is improved, and the maintenance efficiency is low when internal parts break down.

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, in which a cell is limited by a busbar and a limiting member, so as to facilitate the installation or removal of the cell, save the assembly time, and facilitate the maintenance of the battery module.

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

The battery module according to the present invention includes: a housing in which a plurality of cell receiving compartments are formed; the battery cells are configured into a plurality of battery cells and are arranged in the corresponding battery cell accommodating grids; the busbar is arranged on the bottom wall of the battery cell accommodating grid and is suitable for being abutted against one end of the battery cell; and the limiting part is arranged on the shell and is suitable for being abutted against the other end of the battery cell.

According to the battery module, one end of the battery core of the battery module is abutted with the busbar, and the other end of the battery core is abutted with the limiting part, so that the battery module respectively limits the battery core through the busbar and the limiting part, a fixing mode of welding in the prior art is omitted, the battery core is convenient to mount or dismount, the assembly time is saved, and the battery module can be simply dismounted when internal parts of the battery module break down, so that the battery module is convenient to maintain.

According to one embodiment of the utility model, the housing comprises: a base plate; the first side plate and the second side plate are respectively arranged on two opposite side edges of the bottom plate; the battery cell accommodating grid comprises a plurality of partition plates, wherein the partition plates are arranged between the first side plate and the second side plate at intervals, and the battery cell accommodating grid is defined by the two adjacent partition plates together with the first side plate and the second side plate.

According to an embodiment of the present invention, the upper edges of the first side plate and the second side plate are both provided with the limiting members which are abutted against the battery cells.

According to one embodiment of the present invention, the bus bar includes: the busbar body is arranged on the bottom wall of the battery cell accommodating grid and is suitable for being abutted against one end of the battery cell; and one end of the connecting part is connected with the busbar body and extends towards the direction far away from the bottom plate.

According to one embodiment of the utility model, each of the partition plates is provided with a lightening hole adapted to pass through the busbar body.

According to one embodiment of the utility model, a battery management unit is arranged on at least one of the separators, the battery management unit is fixedly connected with the separator, and a sampling connecting piece is arranged between the battery management unit and the corresponding battery core.

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

The battery pack according to the present invention includes a battery case, an upper cover, and the battery module of the above-described embodiment. The battery shell is internally provided with a module accommodating cavity, the battery module is arranged in the module accommodating cavity and is constructed into the battery module, and the upper cover is arranged on the upper side of the battery shell and seals the module accommodating cavity.

According to one embodiment of the present invention, the battery module is constructed in a plurality and arranged in a single row and multiple columns or a plurality of rows and multiple columns in the module receiving cavity.

According to an embodiment of the present invention, the battery pack further includes: the buffer piece is arranged between the upper cover and the battery module, and a matching groove matched with the limiting piece is formed in each buffer piece.

According to an embodiment of the present invention, the battery pack further includes: the distribution box, the distribution box set up in the module holds the intracavity, battery module's connecting portion with the distribution box passes through the copper bar and connects, the copper bar with the cooperation of pegging graft of connecting portion.

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 pack according to an embodiment of the present invention;

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

FIG. 3 is a schematic structural diagram of a housing according to an embodiment of the utility model;

fig. 4 is a schematic diagram of the battery cell and the busbar according to the embodiment of the utility model.

Reference numerals:

the number of the battery modules 10 is such that,

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

the battery cell 12, the bus bar 13, the bus bar body 131, the connecting portion 132,

a limiting member 14, a sampling connecting member 15, a battery management unit 16,

the battery pack 20 is provided with a battery pack,

the battery case 21, the upper cover 22, the buffer member 23, the fitting groove 231, and the distribution box 24.

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 following describes, with reference to fig. 1 to 4, a battery module 10 according to an embodiment of the present invention including a case 11, a cell 12, a bus bar 13, and a stopper 14. Form a plurality of electric cores in the casing 11 and hold the check, electric core 12 constructs for a plurality of and sets up in the electric core that corresponds holds the check, and busbar 13 locates the diapire that electric core held the check and is suitable for and ends to with the one end of electric core 12, and locating part 14 sets up on casing 11 and is suitable for and ends to with the other end of electric core 12.

Specifically, a cell housing lattice for housing the cell 12 is formed in the casing 11, and the upper end of the casing 11 is open so as to be suitable for the cell 12 to be assembled from the upper end. The housing 11 may be made of a hard insulating material, so as to be suitable for protecting the battery cells 12 in the cell accommodating grid, improve the overall strength of the battery module 10, and under the condition of ensuring sufficient strength, any part of the housing 11 may be provided with lightening holes in any shape, thereby reducing the weight of the housing 11 and realizing the light-weight design of the battery module 10.

The battery cell 12 may be configured in plurality, and a plurality of battery cells 12 are arranged at intervals in the battery cell accommodating grid. Busbar 13 can set up the diapire that the check were held to electric core to, busbar 13 can end with the one end of electric core 12, and further, the one end of electric core 12 is provided with utmost point post, and at least part of busbar 13 can be with the utmost point post butt of electric core 12 one end, and the surface and the 13 face laminating of busbar of utmost point post.

The limiting member 14 is disposed on the casing 11, and at least a portion of the limiting member 14 abuts against the other end of the battery cell 12. Specifically, the limiting part 14 may extend along the edge of the casing 11 to be disposed, and therefore, the limiting part 14 may respectively limit the electric core 12 on both sides of the electric core 12 after the electric core 12 is placed into the electric core accommodation grid, so as to improve the stability of placing the electric core 12, and may also simplify the structure of the battery module 10, and the limiting part 14 may stop abutting against the other end of the electric core 12, so as to provide a support for the electric core 12 abutting against the busbar 13, and maintain the stable connection between the pole column disposed on one end of the electric core 12 and the busbar 13.

In short, according to the battery module 10 of the present invention, one end of the battery cell 12 of the battery module 10 abuts against the busbar 13, and the other end of the battery cell 12 abuts against the limiting member 14, so that the battery module 10 limits the battery cell 12 through the busbar 13 and the limiting member 14, respectively, a fixing manner of welding in the prior art is omitted, the installation or disassembly of the battery cell 12 is facilitated, the assembly time is saved, and the battery module 10 can be simply disassembled when a component inside the battery module 10 fails, so as to facilitate the maintenance of the battery module 10.

According to an embodiment of the present invention, the housing 11 includes a bottom plate 111, a first side plate 112, a second side plate 113 and a partition plate 114, 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 and the bus bar 13, the first side plate 112 and the second side plate 113 are respectively disposed at two opposite sides of the bottom plate 111 and are 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 any portion of the first side plate 112, the second side plate 113 and the bottom plate 111 may be provided with a weight reduction hole of any shape under the condition that sufficient strength is ensured, so as to reduce the weight of the housing 11. The partition plates 114 are configured to be multiple and spaced between the first side plate 112 and the second side plate 113, and two adjacent partition plates 114 and the first side plate 112 and the second side plate 113 together define a cell accommodating grid. The battery cell accommodating grid can play a positioning role. The arrangement is convenient for the working personnel to install a plurality of battery cores 12 in the battery core containing grids respectively so as to be positioned quickly, and therefore the assembly efficiency of the battery cores 12 is improved.

According to an embodiment of the present invention, the upper edges of the first side plate 112 and the second side plate 113 are both provided with a limiting member 14 that abuts against the battery cell 12, the limiting members 14 on the first side plate 112 and the second side plate 113 extend toward each other and gradually decrease in thickness in the extending direction, a guiding inclined plane is formed on the limiting member 14, and when the battery cell 12 is installed, the limiting member 14 is pushed to bend outward when the battery cell 12 contacts the guiding inclined plane, so as to be suitable for installing the battery cell 12 in the battery cell accommodating cell.

According to one embodiment of the present invention, the bus bar 13 includes a bus bar body 131 and a connecting portion 132, and the bus bar body 131 is disposed on the bottom wall of the cell accommodating grid and is adapted to abut against one end of the cell 12. The connection portion 132 is disposed at one end of the bus bar body 131, and the connection portion 132 is connected to the bus bar body 131, and the connection portion 132 may face away from the bottom plate 111. The connecting portion 132 and the bus bar body 131 may be fixed by welding, or the connecting portion 132 and the bus bar body 131 may be configured as an integral molding.

According to an embodiment of the present invention, each partition plate 114 is provided with a lightening hole suitable for the busbar body 131 to pass through, the lightening hole may be configured as a square hole, and the lightening holes may be provided in multiple numbers, when the weight is assembled by a worker, the worker may pass at least part of the busbar body 131 through the lightening hole and fix the busbar body 131 on the bottom wall of the cell containing grid, so as to facilitate the worker to install the busbar body 131, and the lightening holes may also reduce the weight of the housing 11, thereby realizing the light-weight design of the battery module 10.

According to an embodiment of the present invention, at least one partition 114 is provided with a battery management unit 16, the battery management unit 16 is fixedly connected to the partition 114, specifically, a battery management unit 16 mounting area is provided on the partition 114, the battery management unit 16 is provided on the battery management unit 16 mounting area, and optionally, the battery management unit 16 and the partition 114 are detachably connected through clamping and plugging. A sampling connecting piece 15 is arranged between the battery management unit 16 and the corresponding battery cell 12, the sampling connecting piece 15 is arranged in the battery cell accommodating grid so as to install the sampling connecting piece 15, and the sampling connecting piece 15 can be connected with the busbar body 131 so as to collect information of the busbar body 131, such as the current temperature, current and the like of the busbar body 131, and transmit the information to the battery management unit 16. Alternatively, the sampling connector 15 and the battery management unit 16 may be connected by a connector to transmit information, or the sampling connector 15 may be directly connected to the battery management unit 16. The sampling connecting piece 15 and the battery management unit 16 are detachably connected through clamping, inserting and the like, or the sampling connecting piece 15 and the battery management unit 16 are connected through welding at contact surfaces.

The battery pack 20 according to the present invention is briefly described below.

The battery pack 20 according to the present invention includes a battery case 21, a battery module 10, and an upper cover 22. Be provided with the module in battery case 21 and hold the chamber, the module holds the chamber and is used for holding battery module 10, battery module 10 sets up and holds the intracavity at the module, and battery module 10's top is provided with upper cover 22, upper cover 22 sets up at battery case 21 upside, and can be used for the closed module to hold the chamber, battery case 21 can cooperate with upper cover 22, optionally, form through bolt and screw thread between battery case 21 and the upper cover 22 and can dismantle the connection, or through the joint between battery case 21 and the upper cover 22, peg graft and form and can dismantle the connection, again or the direct welded connection of contact surface between fixing base and the base.

According to an embodiment of the present invention, the battery module 10 is constructed in a plurality, and the plurality of battery modules 10 are arranged in a single row and in multiple columns or in multiple rows and multiple columns in the module receiving cavity, thereby reducing the occupied space of the battery module and improving the integration and energy density of the battery pack 20.

According to an embodiment of the present invention, the battery pack 20 further includes buffer members 23, the buffer members 23 are disposed between the upper cover 22 and the battery module 10, each buffer member 23 is formed with a matching groove 231 matched with the limiting member 14, the limiting member 14 is accommodated in the matching groove 231 by matching the limiting member 14 with the matching groove 231, an outer surface of the limiting member 14 abuts against an inner surface of the matching groove 231, and thus the limiting member 14 is surface-fitted with the matching groove 231. Further, when the upper cover 22 closes the open opening, the upper cover 22 may contact the buffer member 23 and apply pressure to the buffer member 23, and the buffer member 23 may be deformed by compression to provide a pushing force to the cell 12 in a direction toward the busbar 13, thereby tightly pressing the cell 12 and the busbar 13 together, further increasing the connection reliability between the cell 12 and the busbar 13,

according to an embodiment of the present invention, the battery pack 20 further includes a power distribution box 24, the power distribution box 24 is disposed in the module accommodating cavity, and the power distribution box 24 can reasonably distribute electric energy in the battery pack 20, thereby improving the safety performance of the battery pack 20. And the connecting part 132 of the battery module 10 is connected with the distribution box 24 through a copper bar, the copper bar is in inserting fit with the connecting part 132, the time of bolt connection is saved, the risk of fire catching of the battery pack 20 is reduced, the assembling space of the battery pack 20 can be reduced through inserting fit, and the cost of the battery pack 20 is reduced.

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, comprising:

a shell (11), wherein a plurality of battery cell accommodating grids are formed in the shell (11);

the battery cells (12), the battery cells (12) are configured to be multiple and are arranged in the corresponding battery cell accommodating grids;

the busbar (13) is arranged on the bottom wall of the cell containing grid and is suitable for being abutted against one end of the cell (12);

the limiting piece (14) is arranged on the shell (11) and is suitable for being abutted against the other end of the battery cell (12).

2. The battery module according to claim 1, wherein the housing (11) includes:

a base plate (111);

the first side plate (112) and the second side plate (113), the first side plate (112) and the second side plate (113) are respectively arranged on two opposite sides of the bottom plate (111);

the separators (114) are configured to be multiple and arranged between the first side plate (112) and the second side plate (113) at intervals, and the battery cell accommodating grids are defined by the two adjacent separators (114) and the first side plate (112) and the second side plate (113) together.

3. The battery module according to claim 2, wherein the upper edges of the first side plate (112) and the second side plate (113) are provided with the limiting members (14) which are abutted against the battery cells (12).

4. The battery module according to claim 2, wherein the bus bar (13) includes:

the busbar body (131) is arranged on the bottom wall of the cell accommodating grid and is suitable for being abutted against one end of the cell (12);

a connecting part (132), wherein one end of the connecting part (132) is connected with the bus bar body (131) and extends towards the direction far away from the bottom plate (111).

5. The battery module according to claim 4, wherein each of the separators (114) is provided with a lightening hole adapted to pass through the busbar body (131).

6. The battery module according to claim 2, wherein at least one of the separators (114) is provided with a battery management unit (16), the battery management unit (16) is fixedly connected with the separator (114), and a sampling connector (15) is arranged between the battery management unit (16) and the corresponding battery cell (12).

7. A battery pack, comprising:

the battery pack comprises a battery shell (21), wherein a module accommodating cavity is arranged in the battery shell (21);

a battery module disposed within the module-receiving cavity and configured as the battery module of any one of claims 1-6;

and the upper cover (22), wherein the upper cover (22) is arranged on the upper side of the battery shell (21) and seals the module accommodating cavity.

8. The battery pack of claim 7, wherein the battery modules are configured in plurality and are arranged in a single row and multiple columns or multiple rows and multiple columns within the module receiving cavity.

9. The battery pack according to claim 7, further comprising:

the buffer piece (23), buffer piece (23) set up in between upper cover (22) and the battery module, every be formed with on buffer piece (23) with locating part (14) complex cooperation groove (231).

10. The battery pack according to claim 7, further comprising:

the distribution box (24), the distribution box (24) set up in the module holds the intracavity, battery module's connecting portion (132) with the distribution box (24) are connected through the copper bar, the copper bar with connecting portion (132) are pegged graft the cooperation.