CN210349954U

CN210349954U - Battery module and battery module

Info

Publication number: CN210349954U
Application number: CN201921310488.2U
Authority: CN
Inventors: 许财福; 钟远楷; 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: 2020-04-17
Anticipated expiration: 2029-08-13

Abstract

The utility model relates to a battery field discloses a battery module and battery module, wherein, battery module (10) are including a plurality of range upon range of electric core (1) and cylinder manifold (2) of range, and are a plurality of the same one end of electric core (1) all is provided with utmost point ear (3), cylinder manifold (2) and n utmost point ear (3) electricity is connected, and cylinder manifold (2) are provided with n-1 interval arrangement's bar hole, n-1 utmost point ear (3) insert n-1 the bar hole, another one utmost point ear (3) extend stride across the cylinder manifold (2) with the parallel edge in bar hole. Through above-mentioned technical scheme, reduced the trompil quantity of cylinder manifold to the plate size that converges also corresponding reduction has reduced the processing manufacturing cost of cylinder manifold.

Description

Battery module and battery module

Technical Field

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

Background

The mode that current soft-packaged electrical core is the module in groups is mainly that the integral type is in groups, and monomer electric core is unitized basic unit promptly, and electric core bonds together through bubble cotton or heat conduction pad in the aspect of the big face body of electric core, and all electric cores of a module inside all have the relation of connection each other, are a whole behind the module in groups.

The electric cores are connected through the electric connection part, the existing connection part is complex in structure, multiple in manufacturing procedures and relatively high in cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a battery module to a connected mode of electricity core is provided, the cost of battery module accessory is reduced.

In order to achieve the above object, the present invention provides a battery module, wherein, the battery module includes a plurality of electric cores and bus bars arranged in a stacked manner, and is a plurality of the electric cores are all provided with a tab at the same end, the bus bars are n, the tab is electrically connected with n, and the bus bars are provided with n-1 strip holes arranged at intervals, n-1 the tab is inserted into n-1 the strip holes, and the other tab extends across the edge of the bus bars parallel to the strip holes.

Optionally, a notch is arranged at an edge of the bus bar parallel to the strip-shaped hole, and the other tab is located in the notch.

Optionally, the tabs include extension portions and bending portions, the extension portions of n-1 tabs extend through the strip-shaped holes, the extension portions of the other tabs extend across the edge of the bus bar, and the bending portions are attached to the outer side surface of the bus bar.

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

Additionally, the utility model also provides a battery module, wherein, battery module includes above scheme battery module.

Through above-mentioned technical scheme, reduced the trompil quantity of cylinder manifold to the plate size that converges also corresponding reduction has reduced the processing manufacturing cost of cylinder manifold.

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 an exploded view of a battery module according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a first bus plate according to an embodiment of the present invention;

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

fig. 5 is a schematic structural view of a bracket portion according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a battery module according to an 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 10 includes a plurality of range upon range of electric core 1 and cylinder manifold 2 of range upon range of, and is a plurality of 1 with one end of electric core all is provided with utmost point ear 3, cylinder manifold 2 and n 3 electricity of utmost point ear are connected, and cylinder manifold 2 is provided with the bar hole of n-1 interval arrangement, n-1 utmost point ear 3 inserts n-1 the bar hole, another one utmost point ear 3 extend stride across cylinder manifold 2 with the parallel edge in bar hole.

Referring to fig. 1, a battery module 10 includes a plurality of stacked battery cells 1, and the battery cells 1 are arranged such that tabs 3 are provided at the same end so as to electrically connect the tabs 3 via a bus bar 2. A plurality of bus bars 2 may be provided in the battery module 10 to realize a specific electrical connection manner. Wherein, cylinder manifold 2 can connect in a plurality of utmost point ear 3, is provided with the strip hole that allows utmost point ear 3 male on cylinder manifold 2 (refer to fig. 3 and fig. 4), and the quantity in strip hole is less one than the quantity of the utmost point ear 3 who connects to another utmost point ear 3 stride over cylinder manifold 2 in the edge parallel with the strip hole, reduced cylinder manifold 2's trompil quantity, and cylinder manifold 2's the also corresponding reduction of size, reduced cylinder manifold 2's processing manufacturing cost.

Optionally, a notch is formed in an edge of the bus bar 2 parallel to the strip-shaped hole, and the other tab 3 is located in the notch. The width of the notch may be substantially equal to the width of the tab 3, so that the tab 3 may be caught in the notch to achieve relative positioning. The notch structure is not specifically shown in the drawings, but the specific form of the notch structure will be apparent to those skilled in the art from the foregoing description.

Specifically, the tab 3 comprises an extending portion and a bending portion, the extending portion of n-1 tabs 3 extends through the strip-shaped hole, the extending portion of the other tab 3 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. The bus bar 2 (including the first bus bar 21 and the second bus bar 22) is generally a plate-shaped structure having a strip-shaped hole through which a portion of the tab 3 can pass, and the other tab 3 crosses over at an edge portion of the bus bar 2, and then the passed and crossed portion is bent to be attached to the outer side surface of the bus bar 2, that is, 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 together.

Optionally, the battery module 10 includes a plurality of sets of battery cells 1, each set of battery cells 1 includes a plurality of battery cells 1, the battery cells 1 of each set are connected in parallel through the bus bar 2, and the plurality of sets 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. 1, 2, 3 and 4, 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 and 3, each battery module 10 is provided with two second bus plates 22, in other embodiments, as the number of the grouped 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 cells 1 in the same group together in parallel and connect the heteropolar tabs 3 of the two cells 1 together in series, so as to realize the series connection of the two groups of cells 1. In summary, by matching the first bus bar 21 and the second bus bar 22, a plurality of sets of battery cells can be connected into a whole in a combination of parallel connection and series connection, so as to facilitate the series connection of a plurality of battery modules 10 (for example, through the connecting plate 7 in fig. 6).

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. 5, 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.

In addition, elastic plate pieces 5 are arranged on the surfaces of two sides of each group of the battery cell 1. Referring to fig. 1 and 2, the elastic plate members 5 are disposed on both sides of each group of the battery cells 1, and may 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 may absorb the volume expansion. The elastic plate member 5 may be foam or the like.

Optionally, in each group of the battery cells 1, 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.

Additionally, the utility model also provides a battery module, wherein, battery module includes above scheme battery module. As shown in fig. 6, a plurality of battery modules 10 are arranged side by side to constitute the battery module, and adjacent battery modules 10 are connected by a connecting plate 7, and the connecting plate 7 is connected to two bus bars 2, for example, a second bus bar 21.

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 (10) include a plurality of range upon range of electric core (1) and cylinder manifold (2), and is a plurality of electricity core (1) all is provided with utmost point ear (3) with one end, cylinder manifold (2) are with n utmost point ear (3) electricity is connected, and cylinder manifold (2) are provided with n-1 interval arrangement's bar hole, n-1 utmost point ear (3) insert n-1 the bar hole, another utmost point ear (3) extend stride across the cylinder manifold (2) with the parallel edge in bar hole.

2. The battery module as claimed in claim 1, characterized in that the bus bar (2) is provided at its edge parallel to the bar-shaped hole with a notch in which the other tab (3) is located.

3. The battery module according to claim 1, wherein the tabs (3) include extended portions through which the extended portions of n-1 tabs (3) extend, and bent portions which are fittingly attached to the outer side surface of the bus bar (2) and through which the extended portions of the other tabs (3) extend across the edge of the bus bar (2).

4. The battery module according to claim 1, characterized in that the 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).

5. The battery module according to claim 4, wherein the bus plates (2) include two first bus plates (21) and a plurality of second bus plates (22), the two first bus plates (21) are respectively disposed in two sets of the battery cells (1) that are end to end in the first direction, a connection plate (7) is connected to the two first bus plates (21) of the two battery modules (10), and in two adjacent sets of the battery cells (1), the positive electrode tabs (3) of one set of the battery cells (1) are aligned in the first direction with the negative electrode tabs (3) of the other set of the battery cells (1) and are electrically connected by the second bus plates (22).

6. The battery module according to claim 5, 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).

7. The battery module according to claim 5, 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 plurality of bus plates (2) are provided on the bracket portion (4), and a frame that partitions the plurality of bus plates (2) is provided on the bracket portion (4).

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