CN210167410U

CN210167410U - Battery module

Info

Publication number: CN210167410U
Application number: CN201921311775.5U
Authority: CN
Inventors: 许财福; 廖能韦; 刘丽荣; J.W.江
Original assignee: Farasis Energy Ganzhou Co Ltd
Current assignee: Farasis Energy Ganzhou Co Ltd
Priority date: 2019-08-13
Filing date: 2019-08-13
Publication date: 2020-03-20
Anticipated expiration: 2029-08-13

Abstract

The utility model relates to a battery field discloses a battery module, wherein, battery module includes a plurality of battery module (10) and a plurality of connecting plate (7) side by side, every battery module (10) include a plurality of range upon range of electric core (1), and is a plurality of the same end of electric core (1) is provided with utmost point ear (3), every in battery module (10) utmost point ear (3) are connected through a plurality of cylinder manifold (2) electricity, connecting plate (7) respectively with adjacent two battery module (10) cylinder manifold (2) detachably electricity is connected in order to be a plurality of battery module (10) series connection. Through the technical scheme, modularization of assembly of the battery module is achieved, assembly parts are reduced, assembly efficiency is improved, and cost is reduced.

Description

Battery module

Technical Field

The utility model relates to a battery field specifically relates to a battery module.

Background

The existing mode that soft package battery cells are grouped into modules is mainly integrated into a group, namely, single battery cells are grouped basic units, the battery cells are bonded with the large-surface body of the battery cells through foam or a heat conducting pad, all the battery cells in one module have a connection relation with each other, and the grouped battery cells are integrated after being grouped into modules, so that the whole module cannot be disassembled and maintained, and the material cost and the production cost are high because a certain battery cell in the module has a problem and needs to be scrapped; simultaneously, in actual application, required module kind is many, and the shape diverse, each kind of module all need dedicated production line body, leads to the construction cost of production line to drop into very high, and the life cycle of product is one to two years, and production line utilization ratio is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a modular, can be freely nimble battery module of assembly.

In order to achieve the above object, the utility model provides a battery module, wherein, battery module includes a plurality of battery module and a plurality of connecting plate side by side, every battery module includes a plurality of range upon range of electric core, and is a plurality of the same end of electric core is provided with utmost point ear, every among the battery module utmost point ear is connected through a plurality of cylinder manifold electricity, the connecting plate respectively with adjacent two battery module the cylinder manifold detachably electricity is connected in order to be a plurality of battery module series connection.

Optionally, the battery cells of each of the battery modules are stacked in a first direction, one end of each of the battery cells in a second direction is provided with the tab, the plurality of battery modules are arranged in a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

Optionally, each battery module includes a plurality of groups of battery cells, each group of battery cells includes a plurality of battery cells, the battery cells of each group are connected in parallel through the bus bar, and the plurality of groups of battery cells are connected in series through the bus bar.

Optionally, the bus plates include two first bus plates and a plurality of second bus plates, two first bus plates are respectively disposed on two sets of the battery cells end to end along the first direction, the connection plate is connected to two first bus plates of two battery modules, and in two adjacent sets of the battery cells, a positive electrode tab of one set of the battery cells is aligned with a negative electrode tab of another set of the battery cells along the first direction and is electrically connected through the second bus plates.

Optionally, a plurality of the battery modules have the same number of the battery cells, each of the battery modules has an odd number of groups of the battery cells, and each group of the battery cells has the same number of the battery cells.

Optionally, one end of the battery module, which is provided with the tab, is provided with a support portion for accommodating the tab to pass through, the bus plates are arranged on the support portion, and a frame for separating the bus plates is arranged on the support portion.

Optionally, the bus bar is provided with a plurality of strip-shaped holes, the tab includes an extension portion and a bending portion, the extension portion extends through the strip-shaped hole and/or extends across the edge of the bus bar, and the bending portion is attached to the outer side surface of the bus bar.

Optionally, the two side surfaces of each group of the battery cells are provided with elastic plate pieces.

Optionally, in each group of the battery cells, adjacent battery cells are connected through a double-sided adhesive tape.

Optionally, the connecting plate and the bus bar are connected through bolts.

Through the technical scheme, modularization of assembly of the battery module is achieved, assembly parts are reduced, assembly efficiency is improved, and cost is reduced.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

Fig. 1 is a schematic structural diagram of a battery module according to an embodiment of the present invention;

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

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

fig. 4 is a schematic structural diagram of a first bus plate according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a second bus plate according to an embodiment of the present invention;

fig. 6 is a schematic structural view of the bracket portion according to the embodiment of the present invention.

Description of the reference numerals

1 electric core 2 cylinder manifold

3 lug 4 support part

5 elastic plate 6 double faced adhesive tape

7 connecting plate

21 first bus plate 22 second bus plate

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

The utility model provides a battery module, wherein, battery module includes a plurality of battery module 10 and a plurality of connecting plate 7 side by side, every battery module 10 includes a plurality of range upon range of electric core 1 of arranging, and is a plurality of 1 same one end of electric core is provided with utmost point ear 3, every in the battery module 10 utmost point ear 3 is connected through 2 electricity of a plurality of cylinder plates, connecting plate 7 respectively with adjacent two battery module 10 the 2 detachably electricity of cylinder plate are connected in order to be a plurality of battery module 10 series connection.

Referring to fig. 1, a plurality of battery modules 10 are arranged side by side, and adjacent battery modules 10 are electrically connected by connection plates 7 to constitute a battery module, wherein the connection plates 7 are detachably connected to bus bars 2 of the battery modules 10. Referring to fig. 2, each battery module 10 includes a plurality of stacked battery cells 1, the battery cells 1 are arranged to arrange the tabs 3 at the same end, so as to facilitate the electrical connection of the tabs (including parallel connection and series connection) through the bus plates 2, and for the plurality of battery modules 10, the tabs 3 are also arranged at the same end (or the same side), and correspondingly, the bus plates 2 are also located at the same side, so as to facilitate the side-by-side connection of the plurality of battery modules 10 together through the connecting plate 7.

This scheme has simplified the connected mode between the battery module, has reduced module material cost for the operation of constituteing the battery module is more succinct, and with the battery module modularization, has improved the flexibility of assembly, and the equipment operation of being convenient for is applicable to different application demands.

Optionally, the battery cells 1 of each of the battery modules 10 are stacked in a first direction, one end of each of the battery cells 1 in a second direction is provided with the tab 3, and the plurality of battery modules 10 are arranged in a third direction, where the first direction, the second direction, and the third direction are perpendicular to each other. The stacking direction of the battery cells 1, the orientation of the battery cells 1 (the orientation of the end provided with the tab 3), and the arrangement direction of the battery modules 10 are three directions perpendicular to each other, which is more favorable for stacking of the battery cells and arrangement of the battery modules 10, or the stacking arrangement of each unit of the battery module is performed along a more standard direction, rather than being regular, so that the assembly operation can be simplified.

Specifically, each battery module 10 includes a plurality of groups of battery cells 1, each group of battery cells 1 includes a plurality of battery cells 1, each group of battery cells 1 is connected in parallel through the bus bar 2, and the plurality of groups of battery cells 1 are connected in series through the bus bar 2. That is, in each battery module 10, the battery cells 1 are divided into a plurality of groups, the battery cells 1 of each group are connected in parallel (connection of the tabs 3), and the plurality of groups are connected in series, so that the plurality of battery cells 1 of each battery module 10 are electrically connected in a combination of parallel connection and series connection. Note that the packet referred to here is a packet in an electrical connection manner, and is not a packet in a physical sense. In other embodiments, the plurality of battery cells 1 of the battery module 10 may be connected by other electrical connection methods.

Further, the bus bar 2 includes two first bus bars 21 and a plurality of second bus bars 22, two first bus bars 21 set up respectively in following first direction head and the tail two sets of electricity core 1, the connecting plate 7 connects in two of battery module 10 two first bus bars 21, adjacent two sets of in electricity core 1, a set of electricity core 1's positive pole utmost point ear 3 and another group electricity core 1's negative pole utmost point ear 3 aligns along the first direction and passes through the second bus bar 22 electricity is connected. Referring to fig. 2, two first bus plates 21 are provided in each battery module 10, the two first bus plates 21 correspond to the two groups of cells 1 from head to tail, and are respectively connected to a group of positive electrode tabs and a group of negative electrode tabs, and correspondingly, the connecting plate 7 connects the first bus plate 21 connected to the positive electrode tabs with the first bus plate 21 connected to the negative electrode tabs of another battery module 10; in fig. 2, each battery module 10 is provided with two second bus plates 22, in other embodiments, as the number of the grouped battery cells 1 increases, more second bus plates 22 may be added, and the second bus plates 22 may connect the homopolar tabs 3 of the battery cells 1 in the same group together in parallel, and connect the heteropolar tabs 3 of the two battery cells 1 together in series, so as to implement the series connection of the two groups of battery cells 1. In summary, through the cooperation of the first bus bar 21 and the second bus bar 22, a plurality of groups of cells can be connected into a whole in a manner of combining parallel connection and series connection, so that a plurality of battery modules 10 can be connected in series through the connecting plate 7.

Alternatively, a plurality of the battery modules 10 have the same number of the battery cells 1, each of the battery modules 10 has an odd number of groups of the battery cells 1, and each group of the battery cells 1 has the same number of the battery cells 1. That is, the circuit structure of the plurality of battery modules 10 is maintained substantially uniform, standardization of the battery modules, such as assembly of the battery module, is achieved, and for example, any number of battery modules 10 may be used to constitute the battery module. In each battery module 10, the battery cells 1 are divided into multiple groups with the same number, and the specifications of the battery cells 1 are the same, so that the battery cells 1 of each group are connected in parallel to form the same voltage. Specifically, the battery modules 10 are grouped into an odd number group (3 or more) so that the two first bus plates 21 are located on different sides, facilitating the connection of a plurality of battery modules 10 side by side in an end-to-end manner.

In addition, the battery module 10 is provided with a support part 4 for accommodating the pole lug 3 to pass through at one end of the pole lug 3, the plurality of bus bars 2 are arranged on the support part 4, and a frame for separating the plurality of bus bars 2 is arranged on the support part 4. Support portion 4 is insulation system, can support cylinder manifold 2, refers to fig. 6, is provided with frame construction on support portion 4 to form a plurality of relatively independent regions, a plurality of cylinder manifold 2 are in different regions in order to separate each other, avoid appearing the electricity between the cylinder manifold 2 and connect.

Optionally, the bus bar 2 is provided with a plurality of strip holes, the tab 3 includes an extension portion and a bending portion, the extension portion extends through the strip holes and/or extends across the edge of the bus bar 2, and the bending portion is attached to the outer side surface of the bus bar 2. Referring to fig. 3, the bus bar 2 (including the first bus bar 21 and the second bus bar 22) has a substantially plate-like structure and has a bar-shaped hole through which the tab 3 can pass or straddle at an edge portion of the bus bar 2, and then the passed and straddled portion is bent to be attached to the outer side surface of the bus bar 2, i.e., the tab 3 includes an extended portion and a bent portion which is attached to the outer side surface of the bus bar 2, for example, they may be welded.

In addition, elastic plate pieces 5 are arranged on the surfaces of two sides of each group of the battery cell 1. The elastic plate members 5 are located on two sides of each group of the battery cells 1, and can buffer the battery cells 1, for example, the battery cells 1 may generate volume expansion after long-term use, and the elastic plate members 5 can absorb the volume expansion. The elastic plate member 5 may be foam or the like.

In addition, in each group of the battery cells 1, the adjacent battery cells 1 are connected through a double-sided adhesive tape 6. The double-sided adhesive tape 6 can glue two adjacent battery cells 1 together, so as to realize the connection and assembly of the battery module 10.

Alternatively, the connecting plate 7 and the bus bar 2 are connected by bolts. The connecting plate is detachably connected to the bus bar 2 (specifically, the first bus bar 21) by a bolt, and of course, in other embodiments, a snap-fit manner may be adopted to realize the detachable connection.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. In the technical idea scope of the present invention, it is possible to provide the technical solution of the present invention with a plurality of simple modifications, including combining each specific technical feature in any suitable manner, and in order to avoid unnecessary repetition, the present invention does not provide additional description for various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. The utility model provides a battery module, its characterized in that, battery module includes a plurality of battery module (10) and a plurality of connecting plate (7) side by side, every battery module (10) are including a plurality of range upon range of electric core (1) of range, and are a plurality of electric core (1) be provided with utmost point ear (3) with one end, every in battery module (10) utmost point ear (3) are connected through a plurality of cylinder manifold (2) electricity, connecting plate (7) respectively with adjacent two battery module (10) cylinder manifold (2) detachably electricity is connected in order to be a plurality of battery module (10) series connection.

2. The battery module according to claim 1, wherein the battery cells (1) of each of the battery modules (10) are stacked in a first direction, one end of each of the battery cells (1) in a second direction is provided with the tab (3), and a plurality of the battery modules (10) are arranged in a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

3. The battery module according to claim 1, characterized in that each battery module (10) comprises a plurality of groups of cells (1), each group of cells (1) comprises a plurality of cells (1), the cells (1) of each group are connected in parallel by the bus bar (2), and the plurality of groups of cells (1) are connected in series by the bus bar (2).

4. The battery module according to claim 3, wherein the bus plates (2) comprise two first bus plates (21) and a plurality of second bus plates (22), the two first bus plates (21) are respectively arranged in two groups of the battery cells (1) which are arranged end to end along the first direction, the connecting plate (7) is connected to the two first bus plates (21) of the two battery modules (10), and in two adjacent groups of the battery cells (1), the positive electrode tabs (3) of one group of the battery cells (1) are aligned with the negative electrode tabs (3) of the other group of the battery cells (1) along the first direction and are electrically connected through the second bus plates (22).

5. The battery module according to claim 4, characterized in that a plurality of the battery modules (10) have the same number of cells (1), each battery module (10) having an odd number of groups of cells (1), each group of cells (1) having the same number of cells (1).

6. The battery module according to claim 1, wherein one end of the battery module (10) provided with the tab (3) is provided with a bracket portion (4) through which the tab (3) is received, the bus plates (2) are provided on the bracket portion (4), and a frame that partitions the bus plates (2) is provided on the bracket portion (4).

7. The battery module according to claim 1, wherein the bus bar plate (2) is provided with a plurality of bar-shaped holes, the tab (3) comprises an extension portion and a bent portion, the extension portion extends through the bar-shaped holes and/or extends across the edge of the bus bar plate (2), and the bent portion is attached to the outer side surface of the bus bar plate (2).

8. The battery module according to claim 1, wherein each group of the battery cells (1) is provided with an elastic plate member (5) on both side surfaces.

9. The battery module according to claim 8, characterized in that, in each group of the battery cells (1), adjacent battery cells (1) are connected through a double-sided adhesive tape (6).

10. The battery module according to claim 1, wherein the connection plate (7) and the bus bar (2) are connected by bolts.