CN208078069U - A kind of battery core component and battery pack - Google Patents

Abstract

The utility model provides an electric core assembly and a battery pack, which relate to the technical field of batteries. The electric core assembly includes a plurality of electric cores, conductive strips, first tabs and second tabs, the plurality of electric cores are arranged side by side, and the conductive strips are connected to the plurality of electric cores, so that two batteries arranged at intervals or adjacent to each other can be connected to each other. The cores are connected in series, the first tab and the second tab are arranged on the same side of multiple battery cells arranged side by side, the first tab is connected to one cell through a conductive tape, and the second tab is connected to the other cell through a conductive tape Connection; Since the two battery cells arranged at intervals are connected in series through the conductive strip, the conductive strip finally leading to the first tab and the second tab is relatively short, which reduces the internal resistance of the cell assembly, thereby reducing the electric current. While reducing the heat generated during the working process of the core assembly, it also reduces the processing cost and saves cost resources.

Description

A battery cell assembly and battery pack

technical field

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

Background technique

With the continuous development of technology, new energy technology is also constantly improving, and the application of batteries is becoming wider and wider.

Existing prismatic batteries include multiple batteries, and the batteries are connected in series according to the order of arrangement, but this will cause the last lead-out aluminum bar to span all the batteries, and the length is very different from other aluminum bars. It is about 12 times the length of the aluminum row, and because there is also a horizontal span, the processing cost is relatively high; in addition, due to the length, the internal resistance of the last aluminum row is also much greater than that of other aluminum rows, so when the battery is working, the aluminum row The calorific value of the row is also much greater than that of other aluminum rows. This will affect the consistency of all cells.

Utility model content

In view of this, the purpose of the present utility model is to provide a cell assembly and a battery pack to solve the above problems.

The utility model is achieved in that:

In the first aspect, the embodiment of the present utility model provides a battery cell assembly, which includes a plurality of battery cells, a conductive strip, a first tab and a second tab, and a plurality of the battery cells are arranged side by side. The conductive strip is connected to a plurality of the electric cores, so as to connect two adjacent electric cores in series, and the first tab and the second tab are arranged on a plurality of side-by-side sets of the electric cores. The first tab is connected to one of the battery cells through the conductive strip, and the second tab is connected to the other battery cell through the conductive strip.

Further, the two adjacent electric cores are arranged in reverse, the first pole and the second pole of the two electric cores arranged at intervals are respectively connected to both ends of one of the conductive strips, and the two ends of the two electric cores are arranged The first pole and the second pole of the adjacent battery cells are respectively connected to both ends of one of the conductive strips.

Further, the cell assembly further includes a first tab and a second tab, the first tab is connected to the second pole of the cell arranged in the first row through the conductive strip, the The second tab is connected to the first pole of the battery cell arranged in the second row through the conductive strip.

Further, the battery cell assembly further includes an installation box, and a plurality of the battery cells are arranged in the installation box.

Further, the cell assembly further includes a plurality of isolation plates arranged in the installation box, and the plurality of isolation plates are arranged at intervals between two adjacent cells.

Further, the battery cell assembly further includes a plurality of positioning pieces, the multiple positioning pieces are arranged in the installation box, and each of the battery cells is arranged in one of the installation boxes.

Further, the cell assembly further includes a heat conduction film covering the inner surface of the installation box.

Further, the heat conduction film is a graphite film.

Further, the conductive strip is aluminum strip, copper strip or nickel strip.

In the second aspect, the embodiment of the present invention provides a battery pack, the battery pack includes a plurality of cell assemblies, the plurality of cell assemblies are connected in parallel, and each cell assembly includes a plurality of cells, A conductive strip, a first tab, and a second tab, a plurality of the electric cores are arranged side by side, the conductive strip is connected to the plurality of the electric cores, so as to connect two adjacent electric cores in series , the first tab and the second tab are arranged on the same side of a plurality of battery cells arranged side by side, the first tab is connected to one of the battery cells through the conductive strip, the The second tab is connected to the other battery core through the conductive strip.

Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a cell assembly and a battery pack, the cell assembly includes a plurality of cells, conductive strips, first tabs and second tabs A battery cell is arranged side by side, and the conductive strip is connected to a plurality of battery cells to connect two adjacent battery cells in series. The first tab and the second tab are arranged on the same side of the multiple battery cells arranged side by side. , the first tab is connected to one battery cell through a conductive strip, and the second tab is connected to the other battery core through a conductive strip; since the two battery cells arranged at intervals are connected in series through the conductive strip, the final leads to the first pole The conductive strips of the ear and the second tab are relatively short, which not only reduces the internal resistance of the cell assembly, thereby reducing the heat generated during the working process of the cell assembly, but also reduces the processing cost and saves cost resources.

In order to make the above-mentioned purpose, features and advantages of the present invention more comprehensible, preferred embodiments are specifically cited below, together with the accompanying drawings, and are described in detail as follows.

Description of drawings

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Fig. 1 shows a schematic view of the structure of the cell assembly provided by the present invention at a first viewing angle.

Fig. 2 shows a partial structural schematic view of the cell assembly provided by the present invention at a first viewing angle.

Fig. 3 shows a partial structural schematic view of the cell assembly provided by the present invention in a second viewing angle.

Fig. 4 shows a schematic diagram of the distribution of battery cells provided by the first embodiment of the present invention.

Fig. 5 shows a schematic diagram of the distribution of battery cells provided by the second embodiment of the present invention.

Icons: 100-cell assembly; 110-installation box; 120-cell; 130-conductive tape; 140-first tab; 150-second tab; 160-isolation plate; 170-positioning piece.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. . The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present utility model.

In the description of the present utility model, it should also be noted that, unless otherwise specified and limited, the terms "setting", "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection , can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediary, and can be internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "up", "down", "left", "right", "inside" and "outside" are based on the The orientation or positional relationship of the utility model, or the orientation or positional relationship that the utility model product is usually placed in use, is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific Orientation, construction and operation in a particular orientation, therefore should not be construed as limiting the invention. The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly inclined.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second" and so on are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.

first embodiment

The embodiment of the present utility model provides a cell assembly 100 for supplying power to new energy vehicles or related equipment requiring electric energy.

Please refer to FIG. 1 , which is a schematic structural diagram of a cell assembly 100 provided by an embodiment of the present invention. The cell assembly 100 includes a plurality of cells 120 , a plurality of conductive strips 130 , a first tab 140 , a second tab 150 , an installation box 110 , a plurality of isolation plates 160 and a plurality of positioning elements 170 . A plurality of electric cores 120, a plurality of isolation plates 160, and a plurality of positioning parts 170 are all arranged in the installation box 110, and the plurality of electric cores 120 are arranged side by side, and the conductive strip 130 is connected with the plurality of electric cores 120, so as to set intervals or phase Two adjacent battery cells 120 are connected in series, the first tab 140 and the second tab 150 are arranged on the same side of multiple battery cells 120 arranged side by side, and the first tab 140 is connected to one battery cell 120 through a conductive strip 130 , The second tab 150 is connected to another cell 120 through the conductive strip 130 .

Please refer to FIG. 2 , which is a partial structural schematic diagram of the battery cell assembly 100 provided by the embodiment of the present invention. The installation box 110 is used for installing the battery cell 120 , the isolation plate 160 and the positioning member 170 .

In a preferred embodiment, the installation box 110 includes a bottom plate, a first side plate, a second side plate, a third side plate and a fourth side plate, one side of the first side plate and one side of the second side plate connection, the other side of the second side plate is connected to one side of the third side plate, the other side of the third side plate is connected to one side of the fourth side plate, and the other side of the fourth side plate is connected to the first side The other side of the plate is connected, so that the first side plate, the second side plate, the third side plate and the fourth side plate enclose to form a quadrangular shell, and the bottom plate covers one side of the quadrangular shell, thus forming An accommodating space for accommodating the battery cell 120 , the isolation plate 160 and the positioning member 170 .

In a preferred embodiment, the inner surface of the installation box 110 is covered with a heat conducting film. It can be understood that a large amount of heat will be generated when the battery cell 120 is working. By covering the inner surface of the installation box 110 with a heat-conducting film, the heat generated by the battery cell 120 can be conducted to the installation box 110, and dissipated through the installation box 110 to improve the battery life. Stability of core assembly 100 during operation.

In a preferred embodiment, the heat conducting film is a graphite film.

A plurality of isolation plates 160 are disposed in the installation box 110 . Specifically, one side of each isolation board 160 is connected to the bottom board of the installation box 110 . The multiple isolation plates 160 divide the installation box 110 into multiple accommodating spaces, and each accommodating space can accommodate one battery cell 120 .

In a preferred embodiment, the isolation plates 160 are arranged in the installation box 110 at equal intervals, and divide the installation box 110 into a plurality of receiving spaces of the same size. By arranging the isolation plate 160 , the solution in the cell 120 can be prevented from leaking into other accommodating spaces, so as to avoid affecting the normal operation of the other cells 120 .

A plurality of positioning components 170 are installed in the installation box 110 . Specifically, a positioning member 170 is disposed in an accommodating space divided by a plurality of isolation plates 160 for fixing the electric core 120 .

In a preferred embodiment, the locating member 170 is a frame conforming to the shape of the battery cell 120, one side of the frame is connected to the installation box 110, and a locating member 170 forms a groove with the installation box 110, and the groove Then it is used to fix the electric core 120 .

A plurality of battery cells 120 are arranged side by side, and each battery cell 120 is arranged on a positioning member 170 . The two adjacent battery cells 120 are arranged in opposite directions, and the first pole and the second pole of the two battery cells 120 arranged at intervals are respectively connected to the two ends of a conductive strip 130, and the two adjacent battery cells 120 arranged at the end The first pole and the second pole are respectively connected to two ends of a conductive strip 130 .

It should be noted that the opposite arrangement of two adjacent battery cells 120 means that the directions of the first poles and the second poles of the two adjacent battery cells 120 are opposite.

In this embodiment, the number of battery cells 120 is an even number.

For example, the cell assembly 100 includes 10 cells 120 (as shown in FIG. 3 ). The 10 cells 120 are numbered sequentially, and they are respectively the first cell, the second cell, the third cell, the fourth cell, the fifth cell, the sixth cell, the seventh cell, and the eighth cell. cell, the ninth cell and the tenth cell. Wherein, the second pole of the first cell is connected to the first tab through a conductive strip 130, the first pole of the first cell is connected to the second pole of the third cell through a conductive strip 130, and the first pole of the third cell is connected to the second pole of the third cell. One pole is connected to the second pole of the fifth cell through a conductive strip 130, the first pole of the fifth cell is connected to the second pole of the seventh cell through a conductive strip 130, and the first pole of the seventh cell is connected to the second pole of the seventh cell. The second poles of the nine cells are connected by a conductive strip 130, the first pole of the ninth cell is connected to the second pole of the tenth cell by a conductive strip 130, the first pole of the tenth cell is connected to the eighth cell The second pole is connected by a conductive strip 130, the first pole of the eighth battery cell is connected to the second pole of the sixth battery cell by a conductive strip 130, the first pole of the sixth battery cell is connected to the second pole of the fourth battery cell by The conductive strip 130 is connected, the first pole of the fourth battery cell is connected with the second pole of the second battery cell through the conductive strip 130 , and the first pole of the second battery cell is connected with the second tab 150 through the electric strip.

It can be understood that, through the above connection method, while ensuring that the first tab 140 and the second tab 150 are on the same side, the length difference of each section of the conductive strip 130 can also be kept within a small range, avoiding the Due to the uneven distribution of the internal resistance of the battery cell assembly 100 caused by the excessive length of the conductive strip 130 , the problem of high local heat generation can be effectively avoided.

It should be noted that the number of battery cells 120 may also be other, such as 4, 6, 10 and so on.

In a preferred embodiment, the conductive strip 130 is an aluminum strip, a copper strip or a nickel strip.

It should be noted that, the first pole or the second pole is respectively a positive pole and a negative pole. Specifically, when the first pole is positive, the second pole is negative, and correspondingly, the first tab 140 is negative, and the second tab 150 is positive; when the second pole is positive, the first pole is negative, and the corresponding , the first tab 140 is a positive pole, and the second tab 150 is a negative pole.

second embodiment

The embodiment of the utility model also provides another battery cell assembly 100. It should be noted that the basic principles and technical effects of the battery cell assembly 100 provided by the embodiment of the utility model are the same as those of the above-mentioned embodiments. For description, for parts not mentioned in this embodiment, reference may be made to the corresponding content in the foregoing embodiments.

In this embodiment, the number of battery cells 120 is an odd number.

For example, the cell assembly 100 includes 9 cells (as shown in FIG. 3 ). Label the 10 batteries in sequence, they are the first battery, the second battery, the third battery, the fourth battery, the fifth battery, the sixth battery, the seventh battery, and the eighth battery and the ninth cell. Wherein, the second pole of the first cell is connected to the first tab through a conductive strip 130, the first pole of the first cell is connected to the second pole of the third cell through a conductive strip 130, and the first pole of the third cell is connected to the second pole of the third cell. One pole is connected to the second pole of the fifth cell through a conductive strip 130, the first pole of the fifth cell is connected to the second pole of the seventh cell through a conductive strip 130, and the first pole of the seventh cell is connected to the second pole of the seventh cell. The second poles of the nine cells are connected by a conductive strip 130, the first pole of the ninth cell is connected to the second pole of the eighth cell by a conductive strip 130, the first pole of the eighth cell is connected to the sixth cell The second pole is connected by a conductive strip 130, the first pole of the sixth cell is connected to the second pole of the fourth cell by a conductive strip 130, the first pole of the fourth cell is connected to the second pole of the second cell by The conductive tape 130 is connected, and the first pole of the second cell is connected to the second tab 150 through the electric tape.

third embodiment

The embodiment of the present utility model provides a battery pack, the battery pack includes a plurality of cell assemblies 100 provided in the first embodiment or the second embodiment, and the plurality of cell assemblies 100 are connected in parallel.

In summary, the utility model provides a cell assembly and a battery pack. The cell assembly includes a plurality of cells, a conductive strip, a first lug, and a second tab. The plurality of cells are arranged side by side, and the conductive strip Connect with a plurality of battery cells to connect two adjacent battery cells in series. The first tab and the second tab are arranged on the same side of multiple battery cells arranged side by side. The first tab is passed through a conductive strip. It is connected to one battery cell, and the second tab is connected to the other battery core through a conductive tape; since the two battery cells arranged at intervals are connected in series through the conductive tape, the conductive wires that are finally drawn out to the first tab and the second tab The shorter belt reduces the internal resistance of the cell assembly, thereby reducing the heat generated during the working process of the cell assembly, and at the same time reduces the processing cost and saves cost resources.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. a kind of battery core component, which is characterized in that the battery core component includes multiple battery cores, conductive strips, the first lug and Two lugs, multiple battery cores be arranged side by side, the conductive strips are connect with multiple battery cores, by interval be arranged or it is adjacent Two battery core series connection, first lug and second lug are set to the same of multiple battery cores arranged side by side Side, first lug are connect by the conductive strips with a battery core, and second lug passes through the conductive strips It is connect with battery core described in another.

2. battery core component according to claim 1, which is characterized in that the two neighboring battery core is oppositely arranged, and interval is set The first pole and the second pole for two battery cores set are connect with the both ends of the conductive strips respectively, are set to the two of end The first pole and the second pole of a adjacent battery core are connect with the both ends of the conductive strips respectively.

3. battery core component according to claim 1, which is characterized in that first lug passes through the conductive strips and setting It is connected in the second pole of the battery core of first row, second lug is by the conductive strips and is set to described in second row First pole of battery core connects.

4. battery core component according to claim 1, which is characterized in that the battery core component further includes mounting box, Duo Gesuo Battery core is stated to be set in the mounting box.

5. battery core component according to claim 4, which is characterized in that the battery core component further includes multiple isolation boards, more A isolation board is set in the mounting box, and multiple isolation boards are arranged at intervals between the two neighboring battery core.

6. battery core component according to claim 4, which is characterized in that the battery core component further includes multiple locating pieces, more A locating piece is set in the mounting box, and each battery core is set to a mounting box.

7. battery core component according to claim 4, which is characterized in that the battery core component further includes heat conducting film, described to lead Hotting mask is covered in the inner surface of the mounting box.

8. battery core component according to claim 7, which is characterized in that the heat conducting film is graphite film.

9. the battery core component according to any one of claim 1-8, which is characterized in that the conductive strips are aluminium strip, copper Band or nickel strap.

10. a kind of battery pack, which is characterized in that the battery pack includes multiple battery core components as described in claim 1-9, multiple The battery core modules in parallel.