CN212085123U

CN212085123U - Battery cell and battery module

Info

Publication number: CN212085123U
Application number: CN202020832405.2U
Authority: CN
Inventors: 许杰城; 吴佳凡
Original assignee: Zhuhai Cosmx Power Battery Co Ltd
Current assignee: Zhuhai Cosmx Power Battery Co Ltd
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2020-12-04
Anticipated expiration: 2030-05-18

Abstract

A battery core and a battery module are provided, wherein the battery module comprises a plurality of stacked battery cores, a first bus bar and a second bus bar, the first bus bar and the second bus bar are respectively arranged at two ends of the battery module, the battery cores are the battery cores, and a third pole lug of each battery core is positioned at the same side of the battery module; there are signal acquisition board, utmost point ear cylinder manifold and communication connector on the first cylinder manifold, and the signal acquisition board links to each other with the third pole ear, and utmost point ear cylinder manifold links to each other with the utmost point ear that the third pole ear is located same one side, is used for converging and signal acquisition, signal acquisition board and utmost point ear cylinder manifold and communication connector communication connection. The both ends of electric core are provided with first utmost point ear and second utmost point ear respectively, still include: and the third tab is arranged at one end of the battery core and is a signal acquisition tab, and the polarity of the third tab is opposite to that of the tab arranged on the same side. The utility model discloses can realize using the battery module of "B" type electricity core at homonymy acquisition signal, simplify the structure of battery module, improve the security performance, the cost is reduced.

Description

Battery cell and battery module

Technical Field

The utility model belongs to the technical field of lithium ion battery, especially, relate to a lithium cell and soft packet of polymer lithium ion battery module.

Background

The popularization of new energy technology drives the rapid development of the lithium ion battery industry, the battery module is used as an important part of a new energy automobile, and various performance requirements of various host factories on the battery module are higher and higher. In order to meet the requirements of new energy vehicles, battery modules are developed towards flattening. Along with battery cooling system's addition, under the same capacity, the length dimension of battery module is longer and longer, and the thickness dimension then reduces relatively, and this has also led to the electric core in the battery module to be longer and longer toward length, and the width development of direction that the width is shorter and shorter (module height is lower and lower). The "B" type cell refers to a cell in which positive and negative electrode tabs are respectively disposed at two ends of the cell in the length direction. To the battery module group that adopts "B" type electricity core to constitute, need use pencil or FPC to gather positive, negative pole signal from the both ends of electricity core, then summarize in one end output. Under the more and more long condition of electricity core length, the pencil overlength can make its security greatly reduced, also can bring the lower problem of space utilization simultaneously, on the other hand, if use FPC, will bring the problem of too high cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can homonymy gather electric core and battery module of electric core data information.

In order to achieve the above object, the present invention adopts the following technical solutions:

the utility model provides an electric core, the both ends of electric core are provided with first utmost point ear and second utmost point ear respectively, still include: the third pole lug is a signal acquisition pole lug, and the polarity of the third pole lug is opposite to that of the pole lug arranged on the same side.

Further, the size of the third tab is smaller than that of the first tab or the second tab.

The utility model also provides a battery module, including a plurality of electric cores that are stacked, a first collecting plate and a second collecting plate that are respectively arranged at two ends of the battery module, wherein the electric core is the above electric core, and a third pole ear of the electric core is positioned at the same side of the battery module; be provided with signal acquisition board, utmost point ear cylinder manifold and communication connector on the first cylinder manifold, the signal acquisition board with the third pole ear links to each other, utmost point ear cylinder manifold with the third pole ear is located the utmost point ear with one side and links to each other, is used for converging and signal acquisition, the signal acquisition board with utmost point ear cylinder manifold with communication connector communication connection.

According to the technical scheme provided by the utility model, electric core adopts three utmost point ear's structure, except setting up on electric core, the negative pole ear, still be provided with the third utmost point ear that is used for carrying out signal acquisition, the third utmost point ear is just rather than electric core, cooperate rather than a utmost point ear opposite in polarity in the negative pole ear, it is just to carry out electric core, the collection of negative pole signal, can realize using the battery module of "B" type electricity core to gather the signal at the homonymy, not only the structure of battery module has been simplified, and do not have collection pencil or FPC who stridees across the setting from the both ends of battery module, the not enough or with high costs problem of security that adopts pencil or FPC to gather the signal existence from the module both ends has also been solved, the security performance is improved, and. In addition, the structural style of adopting utmost point ear carries out the collection of battery signal, can improve the space utilization of electric core and module, is favorable to improving battery capacity.

More specifically, at least one signal acquisition board is arranged on the first bus board.

More specifically, be provided with at least one utmost point ear cylinder manifold on the first cylinder manifold.

The number of signal acquisition board or utmost point ear cylinder manifold on the cylinder manifold can be one or more to can set up the structure of battery module as required, the flexibility ratio is high.

Drawings

In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive effort.

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

fig. 2 is a schematic diagram of a structure of a battery cell according to an embodiment of the present invention.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings, wherein for convenience of illustration, the drawings showing the structure of the device are not to scale and are partially enlarged, and the drawings are only examples, which should not limit the scope of the invention. It should be noted that the drawings are in simplified form and are not to precise scale, which is only used for the purpose of facilitating and clearly assisting in the description of the embodiments of the present invention.

Referring to fig. 1 and 2, the battery module of the present embodiment includes a battery cell 1, a first bus bar 2, and a second bus bar 3. A plurality of battery cells 1 are stacked together and mounted in a frame (not shown) to form a battery module, and adjacent battery cells 1 are separated by a separator 4 such as an aluminum plate, foam or a bracket. The first bus plate 2 and the second bus plate 3 are respectively arranged at two ends of the battery module (battery core) in the length direction. Be provided with utmost point ear cylinder manifold 5, signal acquisition board 6 and communication connector 7 on first cylinder manifold 2, also be provided with utmost point ear cylinder manifold (not shown) on second cylinder manifold 3, but the utmost point ear cylinder manifold on the second cylinder manifold 3 only has the function of converging, and utmost point ear cylinder manifold 5 on first cylinder manifold 2 is except the function of converging, and signal acquisition's function in addition to cooperate with signal acquisition board 6 to accomplish the collection of electric core data information. The positions of the lug collecting plates, the signal acquisition plates and the communication connector on the collecting plates can be adjusted according to production needs, and the quantity of the lug collecting plates and the signal acquisition plates can also be correspondingly set according to demands.

The battery cell 1 is provided with a first tab 1-1, a second tab 1-2 and a third tab 1-3, wherein the first tab 1-1 and the second tab 1-2 are respectively a positive tab and a negative tab of the battery cell, and the first tab 1-1 and the second tab 1-2 are respectively arranged at two ends of the battery cell 1 in the length direction and extend out of the battery cell body. The third tab 1-3 is disposed at one end of the battery cell 1, and the third tab 1-3 may be disposed at the same side as the first tab 1-1, or may be disposed at the same side as the second tab 1-2. The third tab 1-3 is a signal collecting tab for collecting a voltage signal of the battery cell, and the third tab 1-3 is only used for signal collection and does not need to have the same overcurrent capacity as the positive and negative tabs, so that the size of the third tab 1-3 can be aligned with each other and the negative tab is smaller, and the occupation of the internal space of the battery cell is reduced as much as possible. The polarity of the third tab 1-3 is determined according to the setting position, the polarity of the third tab 1-3 is opposite to the polarity of the tab located on the same side of the third tab 1-3, if the third tab 1-3 and the positive tab are arranged on the same side of the battery cell (i.e. the third tab and the positive tab are arranged on the same end of the battery cell in the length direction), the polarity of the third tab 1-3 is a negative electrode, and if the third tab 1-3 and the negative tab are arranged on the same side of the battery cell, the polarity of the third tab 1-3 is a positive electrode, so that the third tab 1-3 and the tab located on the same side of the third tab can jointly realize the function of collecting the positive and negative signals.

When assembling the battery module, stack electricity core 1 in proper order, first utmost point ear 1-1 of electricity core 1 is connected on utmost point ear cylinder manifold 5 of first cylinder manifold 2 with welding or other modes, second utmost point ear 1-2 is connected on the utmost point ear cylinder manifold of second cylinder manifold 3 with same mode, third utmost point ear 1-3 of electricity core 1 is connected on signal acquisition board 6 of first cylinder manifold 2 with welding or other modes, utmost point ear cylinder manifold 5 on the first cylinder manifold 2, signal acquisition board 6 and communication connector 7 communication connection, gather the battery data signal who gathers, export through communication connector 7. The utility model discloses a set up the third utmost point ear that is used for carrying out signal acquisition on electric core, the third utmost point ear with electric core just, in the negative pole ear rather than the utmost point ear cooperation that polarity is opposite, carry out the collection of electric core just, negative pole signal, can realize using the battery module of "B" type electricity core at homonymy acquisition signal, solved and adopted pencil or FPC from the not enough or with high costs problem of security that module both ends acquisition signal exists.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides an electric core, the both ends of electric core are provided with first utmost point ear and second utmost point ear respectively, its characterized in that still includes:

the third pole lug is a signal acquisition pole lug, and the polarity of the third pole lug is opposite to that of the pole lug arranged on the same side.

2. The cell of claim 1, wherein: the size of the third tab is smaller than that of the first tab or the second tab.

3. The battery module, include a plurality of stacks the electric core that sets up, set up respectively in the first cylinder manifold and the second cylinder manifold at battery module both ends, its characterized in that: the battery cell of claim 1 or 2, wherein a third tab of the battery cell is located on the same side of the battery module;

be provided with signal acquisition board, utmost point ear cylinder manifold and communication connector on the first cylinder manifold, the signal acquisition board with the third pole ear links to each other, utmost point ear cylinder manifold with the third pole ear is located the utmost point ear with one side and links to each other, is used for converging and signal acquisition, the signal acquisition board with utmost point ear cylinder manifold with communication connector communication connection.

4. The battery module according to claim 3, wherein: at least one signal acquisition board is arranged on the first bus board.

5. The battery module according to claim 3, wherein: and at least one lug bus bar is arranged on the first bus bar.