CN219658919U - Battery cell charge-discharge balancing structure and battery pack with same - Google Patents
Battery cell charge-discharge balancing structure and battery pack with same Download PDFInfo
- Publication number
- CN219658919U CN219658919U CN202320982715.6U CN202320982715U CN219658919U CN 219658919 U CN219658919 U CN 219658919U CN 202320982715 U CN202320982715 U CN 202320982715U CN 219658919 U CN219658919 U CN 219658919U
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- group
- electric cores
- section
- extension section
- electrode plate
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000007599 discharging Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model provides a battery cell charge-discharge balancing structure and a battery pack with the same, the structure comprises two electrode plates, each electrode plate is provided with an installation section and a connection section which are connected with each other, any one of the two electrode plates is also provided with an extension section, and the head end of the extension section is connected with the tail end of the connection section; each group of electric cores consists of a plurality of electric cores which are connected in series, and each group of electric cores is provided with a first connecting end and a second connecting end; the first connection ends of the first group to the N group of electric cores are electrically connected from the head end side to the tail end side of the connection section of the electrode plate without the extension section in sequence, and the second connection ends of the first group to the N group of electric cores are electrically connected from the tail end side to the head end side of the extension section of the electrode plate with the extension section in sequence. The utility model can lead each group of electric cores to keep equal distance connection wiring, so that the wiring resistance of each group of electric cores is the same, thereby being beneficial to the charge and discharge balance of a plurality of groups of electric cores.
Description
Technical Field
The utility model relates to the technical field of battery packs, in particular to a battery cell charge-discharge balancing structure and a battery pack with the same.
Background
Currently, electric vehicles are being developed in various countries in the world, and power battery packs are also receiving a great deal of attention as a main power source of the electric vehicles. In order to improve the volume energy density of the battery pack and reduce the cost, the battery module or the group of modules is eliminated, the battery cells are directly arranged on the battery pack, and then the battery cells are connected in series-parallel, namely, the battery cells are firstly arranged in the battery pack and then connected. The inventor of the present utility model has found through application research that, since the existing battery pack is formed by connecting a plurality of battery cells in series and in parallel, and the connection distances of each group of battery cells formed by connecting a plurality of battery cells in series are not equal, it is a difficult problem to keep the same voltage and current of each battery cell during charging and discharging, and thus it is needed to solve the difficult problem.
Disclosure of Invention
The utility model provides a battery cell charge-discharge balancing structure and a battery pack with the same, aiming at the technical problems that the prior battery pack is formed by connecting a plurality of battery cells in series and in parallel, and the connection distance of each group of battery cells formed by connecting the battery cells in series is unequal, so that each battery cell can keep the same voltage and current during charge and discharge.
In order to solve the technical problems, the utility model adopts the following technical scheme:
in one aspect, the present utility model provides a cell charge-discharge balancing structure, including:
the electrode plate comprises two electrode plates, wherein each electrode plate is provided with a mounting section and a connecting section which are connected with each other, any one electrode plate in the two electrode plates is also provided with an extension section, and the head end of the extension section is connected with the tail end of the connecting section;
the N groups of electric cores are arranged in parallel, each group of electric cores is formed by connecting a plurality of electric cores in series, and each group of electric cores is provided with a first connecting end and a second connecting end;
the first connection ends of the first group to the N group of electric cores are electrically connected from the head end side to the tail end side of the connection section of the electrode plate of the extension section, which is never arranged, in sequence, and the second connection ends of the first group to the N group of electric cores are electrically connected from the tail end side to the head end side of the extension section of the electrode plate of the extension section.
Further, the mounting section, the connecting section and the extending section are integrally connected.
Further, the electrode plate is a copper sheet.
Further, in the N groups of electric cores, the positive and negative electrodes of two adjacent electric cores in each group of electric cores are connected in series through a connecting sheet.
Further, the connecting sheet is a nickel sheet.
On the other hand, the utility model provides a battery pack, which comprises a shell and the battery cell charge-discharge balancing structure, wherein the battery cell charge-discharge balancing structure is fixedly arranged in the shell.
Compared with the prior art, the battery cell charge-discharge balance structure and the battery pack with the same are characterized in that two electrode plates are arranged, each electrode plate is provided with an installation section and a connecting section which are connected with each other, any electrode plate in the two electrode plates is also provided with an extension section, and the head end of the extension section is connected with the tail end of the connecting section; each group of electric cores is formed by connecting a plurality of electric cores in series, and each group of electric cores is provided with a first connecting end and a second connecting end; the first connection ends of the first group to the N group of electric cores are electrically connected from the head end side to the tail end side of the connection section without the extension section electrode sheet in sequence, and the second connection ends of the first group to the N group of electric cores are electrically connected from the tail end side to the head end side of the extension section with the extension section electrode sheet in sequence; therefore, each group of electric cores can be kept with equal-distance connection wiring, wiring resistances of each group of electric cores are the same, and voltage and current of each group of electric cores in the charging and discharging process are kept consistent, so that charging and discharging balance of multiple groups of electric cores is facilitated.
Drawings
Fig. 1 is a schematic diagram of a front side view structure of a cell charge-discharge balance structure provided by the utility model.
Fig. 2 is a schematic diagram of a rear side view structure of a cell charge-discharge balance structure provided by the utility model.
Fig. 3 is a schematic diagram of a front view structure of a cell charge-discharge balance structure provided by the utility model.
In the figure, 1, electrode plate; 11. a mounting section; 12. a connection section; 13. an extension section; 2. n groups of electric cores; 3. a connecting sheet; 4. and (5) mounting holes.
Detailed Description
The utility model is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the utility model easy to understand.
In the description of the present utility model, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships that are based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
As a specific embodiment, referring to fig. 1 to 3, the present utility model provides a cell charge-discharge balancing structure, which includes:
two electrode plates 1, wherein each electrode plate 1 is provided with a mounting section 11 and a connecting section 12 which are connected with each other, any one electrode plate 1 of the two electrode plates 1 is also provided with an extension section 13, and the head end of the extension section 13 is connected with the tail end of the connecting section 12;
n groups of electric cores 2 (four groups are shown in the figure), wherein the N groups of electric cores 2 are arranged in parallel, each group of electric cores is formed by connecting a plurality of electric cores in series, and each group of electric cores is provided with a first connecting end and a second connecting end;
the first connection ends of the first to nth groups (first to fourth groups are shown in the figure) of the N groups of electric cores 2 are electrically connected in sequence from the head end side to the tail end side of the connection section 12 without the extension section electrode sheet, and the second connection ends of the first to nth groups (first to fourth groups are shown in the figure) of the N groups of electric cores 2 are electrically connected in sequence from the tail end side to the head end side of the extension section 13 with the extension section electrode sheet. Namely, the first connection ends of the first group of electric cores are electrically connected with the head end side of the connection section 12 without the extension section electrode plate, and the second connection ends of the first group of electric cores are electrically connected with the tail end side of the extension section 13 with the extension section electrode plate; the first connection ends of the second group of electric cores are also electrically connected with the connection section 12 without the extension section electrode plate, but the connection points of the first connection ends of the second group of electric cores are farther away from the head end side of the connection section 12 without the extension section electrode plate than the connection points of the first connection ends of the first group of electric cores, the second connection ends of the second group of electric cores are also electrically connected with the extension section 13 with the extension section electrode plate, but the connection points of the second connection ends of the second group of electric cores are farther away from the tail end side of the extension section 13 with the extension section electrode plate than the connection points of the second connection ends of the first group of electric cores; and by analogy, the first connecting end of the nth group of electric cores is electrically connected with the tail end side of the connecting section 12 without the extending section electrode plate, and the second connecting end of the nth group of electric cores is electrically connected with the head end side of the extending section 13 with the extending section electrode plate.
In one embodiment, the mounting section 11, the connecting section 12 and the extension section 13 are integrally formed and connected, whereby the overall connection strength of the electrode sheet 1 can be enhanced.
In a specific embodiment, the electrode plate 1 is a copper plate, so that when the copper plate is used as the electrode plate and electrically connected with the first connection end and the second connection end of each group of electric cells, such as welding, the copper plate can be used for passing the heavy current of the first connection end and the second connection end of each group of electric cells, i.e. the copper plate can be used for passing the heavy current. Of course, other metal sheets such as aluminum sheets may be used as the connection electrode by those skilled in the art.
In a specific embodiment, in the N groups of electric cores 2, the positive and negative electrodes of two adjacent electric cores in each group of electric cores are connected in series through a connecting sheet 3, so that the processing cost of connecting the adjacent electric cores can be reduced, and the assembly process of connecting the adjacent electric cores can be simplified.
In a specific embodiment, the connecting piece 3 is a nickel piece, and the nickel piece has low resistance, so that the nickel piece can be well welded with the positive electrode and the negative electrode of two adjacent cells in each group of cells. Other metal sheets such as aluminum sheets or wires may be used to make the connection by those skilled in the art.
As another specific embodiment, the utility model further provides a battery pack, which comprises a housing and the battery cell charge-discharge balancing structure, wherein the battery cell charge-discharge balancing structure is fixedly arranged in the housing, and the battery cell charge-discharge balancing structure can be fixedly connected with the housing through the mounting section 11 and the mounting hole 4 preset on the connecting sheet 3.
Compared with the prior art, the battery cell charge-discharge balance structure and the battery pack with the same are characterized in that two electrode plates are arranged, each electrode plate is provided with an installation section and a connecting section which are connected with each other, any electrode plate in the two electrode plates is also provided with an extension section, and the head end of the extension section is connected with the tail end of the connecting section; each group of electric cores is formed by connecting a plurality of electric cores in series, and each group of electric cores is provided with a first connecting end and a second connecting end; the first connection ends of the first group to the N group of electric cores are electrically connected from the head end side to the tail end side of the connection section without the extension section electrode sheet in sequence, and the second connection ends of the first group to the N group of electric cores are electrically connected from the tail end side to the head end side of the extension section with the extension section electrode sheet in sequence; therefore, each group of electric cores can be kept with equal-distance connection wiring, wiring resistances of each group of electric cores are the same, and voltage and current of each group of electric cores in the charging and discharging process are kept consistent, so that charging and discharging balance of multiple groups of electric cores is facilitated.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.
Claims (6)
1. The utility model provides a balanced structure of electricity core charge-discharge which characterized in that includes:
the electrode plate comprises two electrode plates, wherein each electrode plate is provided with a mounting section and a connecting section which are connected with each other, any one electrode plate in the two electrode plates is also provided with an extension section, and the head end of the extension section is connected with the tail end of the connecting section;
the N groups of electric cores are arranged in parallel, each group of electric cores is formed by connecting a plurality of electric cores in series, and each group of electric cores is provided with a first connecting end and a second connecting end;
the first connection ends of the first group to the N group of electric cores are electrically connected from the head end side to the tail end side of the connection section of the electrode plate of the extension section, which is never arranged, in sequence, and the second connection ends of the first group to the N group of electric cores are electrically connected from the tail end side to the head end side of the extension section of the electrode plate of the extension section.
2. The cell charge-discharge equalizing structure according to claim 1, wherein the mounting section, the connecting section and the extension section are integrally connected.
3. The cell charge-discharge balancing structure of claim 1, wherein the electrode sheet is a copper sheet.
4. The cell charge-discharge balancing structure according to claim 1, wherein the positive and negative electrodes of two adjacent cells in each group of cells are connected in series through a connecting sheet.
5. The cell charge-discharge balance structure of claim 4, wherein the connecting piece is a nickel piece.
6. A battery pack, characterized by comprising a housing and the cell charge-discharge balance structure according to any one of claims 1 to 5, the cell charge-discharge balance structure being fixedly disposed in the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320982715.6U CN219658919U (en) | 2023-04-26 | 2023-04-26 | Battery cell charge-discharge balancing structure and battery pack with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320982715.6U CN219658919U (en) | 2023-04-26 | 2023-04-26 | Battery cell charge-discharge balancing structure and battery pack with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219658919U true CN219658919U (en) | 2023-09-08 |
Family
ID=87861121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320982715.6U Active CN219658919U (en) | 2023-04-26 | 2023-04-26 | Battery cell charge-discharge balancing structure and battery pack with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219658919U (en) |
-
2023
- 2023-04-26 CN CN202320982715.6U patent/CN219658919U/en active Active
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