CN110931697A - Battery combination structure and combined battery pack - Google Patents
Battery combination structure and combined battery pack Download PDFInfo
- Publication number
- CN110931697A CN110931697A CN201911276852.2A CN201911276852A CN110931697A CN 110931697 A CN110931697 A CN 110931697A CN 201911276852 A CN201911276852 A CN 201911276852A CN 110931697 A CN110931697 A CN 110931697A
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- Prior art keywords
- battery
- batteries
- connection
- liquid
- battery assembly
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000007788 liquid Substances 0.000 claims description 47
- 238000001816 cooling Methods 0.000 claims description 30
- 229920000297 Rayon Polymers 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 239000012790 adhesive layer Substances 0.000 abstract description 4
- 239000000110 cooling liquid Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/42—Grouping of primary cells into batteries
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention relates to the technical field of assembled battery packs, and particularly discloses a battery combined structure and an assembled battery pack. The battery combination structure is applied to a plurality of batteries and comprises a connecting structure and conductive connecting sheets, wherein each side face of the connecting structure along the length direction is correspondingly connected with the side face of the battery, an adhesive layer is arranged between the side face of the connecting structure along the length direction and the side face of the battery, each connecting sheet comprises a plurality of first connecting sheets, two ends of each first connecting sheet are connected with electrode ends of two adjacent batteries, and the electrode polarities of the two batteries connected with the first connecting sheets are opposite. The battery combination structure has the advantages of small volume, simple structure, convenient assembly, low cost and small verticality deviation.
Description
Technical Field
The invention relates to the technical field of assembled battery packs, in particular to a battery assembly structure and an assembled battery pack.
Background
Limited by the battery manufacturing process in the prior art and the safety risk problem of the large-volume battery itself, the volume of the existing battery is generally certain, and the single large-capacity battery is rarely produced and manufactured according to the actual use requirement. In the face of the use requirement of a large-capacity battery pack, a plurality of groups of batteries can be connected in series or in parallel to form an assembled battery pack, so that the storable capacity of the batteries is increased. However, in order to fix a plurality of strings of batteries, a wrapping design is generally added on the outer periphery of the batteries, and the wrapping design increases the external dimension of the battery pack, and the verticality deviation is large, so that the energy density of the batteries is reduced, the assembly is inconvenient, and the cost is high.
Disclosure of Invention
An object of an embodiment of the present invention is to provide a battery assembly structure, which has a simplified structure, convenient assembly, low cost, and small verticality deviation.
Another object of an embodiment of the present invention is to provide a battery pack, which has a small size, is convenient to assemble, has a low cost, and has high safety and high energy density.
To achieve the purpose, the embodiment of the invention adopts the following technical scheme:
the first aspect provides a battery composite structure, is applied to a plurality of batteries, including connection structure and electrically conductive connection piece, connection structure all corresponds along length direction's every side and connects the side of battery, connection structure along length direction's side with be provided with the viscose layer between the side of battery, the connection piece includes a plurality of first connection pieces, adjacent two are connected at the both ends of first connection piece the electrode end of battery, and two the battery is connected the electrode polarity of first connection piece is opposite.
As a preferred scheme of the battery combined structure, a liquid cooling pipeline is arranged inside a middle shaft of the connecting structure along the length direction.
As a preferable scheme of the battery assembly structure, the liquid cooling pipeline includes at least one first flow channel and at least one second flow channel, and an inlet of the second flow channel is communicated with an outlet of the first flow channel.
As a preferred scheme of the battery combined structure, one end of the liquid cooling pipeline is provided with a liquid inlet and a liquid outlet, one of the liquid inlet and the liquid outlet is communicated with the first flow passage, and the other is communicated with the second flow passage.
As a preferable scheme of the battery combination structure, the total cross-sectional area of the pipe orifice of the liquid inlet is equal to that of the pipe orifice of the liquid outlet.
As a preferable scheme of the battery combination structure, an integral wrapping structure wrapping the plurality of batteries and the connecting structure is further provided.
As a preferable scheme of the battery combination structure, the integral wrapping structure is a heat shrinkable sleeve.
As a preferable scheme of the battery combination structure, one end of the connection structure is provided with a circuit board, the connection piece further comprises a second connection piece, one end of the second connection piece is connected with one electrode end of the battery, and the other end of the first connection piece is connected with the circuit board.
As a preferable scheme of the battery combination structure, the positive terminals of the plurality of batteries are provided with conductive top covers.
In a second aspect, a battery pack is provided, which includes a plurality of sets of batteries, and a battery assembly structure, each set of the batteries includes a plurality of batteries connected in series, the battery assembly structure fixes the plurality of sets of the batteries, one end of the first connecting piece is connected to one of the sets of the batteries, the electrode end of the battery is connected to the other end of the first connecting piece, the electrode ends of the batteries are connected to the other set of the batteries, and the two batteries are connected to the first connecting piece, and the electrode polarities of the two batteries are opposite.
The embodiment of the invention has the beneficial effects that:
through set up connection structure between a plurality of batteries, make connection structure go up every side along length direction all correspond the side of connecting the battery, again set up the first connecting piece that the connection piece includes between two adjacent batteries and the opposite electrode end of polarity and connect, and set up the viscose layer between connection structure along length direction's side and the side of battery, can make up into the assembled battery package of large capacity with a plurality of batteries, and can not increase the parcel design in the battery periphery, retrench the combined structure of assembled battery package. The battery combination structure provided by the embodiment of the invention has the advantages of small volume, simple structure, convenience in assembly, low cost and small verticality deviation.
Drawings
The invention is explained in more detail below with reference to the figures and examples.
Fig. 1 is a schematic structural diagram of a battery assembly structure according to an embodiment of the present invention.
Fig. 2 is a sectional view of a radial cross-sectional structure of a connection structure according to another embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a connection structure according to another embodiment of the present invention.
Fig. 4 is a structural sectional view in axial section of a connection structure according to another embodiment of the present invention.
Fig. 5 is an exploded view of a battery assembly according to another embodiment of the present invention.
Fig. 6 is a sectional view showing the structure of an assembled battery pack according to another embodiment of the present invention.
In the figure:
1. a battery assembly structure; 11. a connecting structure; 111. an adhesive layer; 112. a liquid cooling pipe; 1121. a first flow passage; 1122. a second flow passage; 1123. a liquid inlet; 1124. a liquid outlet; 12. connecting sheets; 121. a first connecting piece; 122. a second connecting sheet; 13. an integral wrap structure; 14. a top cover; 15. a circuit board;
2. a battery.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1 and 2, an embodiment of the present invention provides a battery assembly structure 1, which includes a connection structure 11 and a conductive connection sheet 12, each side of the connection structure 11 along a length direction corresponds to a side of a battery 2, an adhesive layer 111 is disposed between the side of the connection structure 11 along the length direction and the side of the battery 2 for adhering the battery 2 to the side of the connection structure 11, and the connection sheet 12 includes a plurality of first connection sheets 121, two ends of each first connection sheet 121 are connected to electrode terminals of two adjacent batteries 2, and the electrodes of the two batteries 2 connected to the first connection sheets 121 have opposite polarities.
This embodiment is through setting up connection structure 11 between a plurality of batteries 2, make every side along length direction on connection structure 11 all correspond with the side of a battery 2 and be connected, set up first connecting piece 121 that connection piece 12 includes between two adjacent batteries 2 and the opposite electrode end of polarity and connect, and set up adhesive layer 111 between connection structure 11 along length direction's side and battery 2's side, can make up a plurality of batteries 2 into the assembled battery package of large capacity, and can not increase the parcel design in battery 2 periphery, the integrated configuration of assembled battery package has been simplified, through setting up a plurality of batteries 2 on connection structure 11 on the side, utilize connection structure 11's side to carry on spacingly to a plurality of batteries 2, also can prevent the straightness offset value increase that hangs down of a plurality of batteries 2. Therefore, the battery combination structure 1 provided by the embodiment of the invention has the advantages of small volume, simple structure, convenience in assembly, low cost and small verticality deviation.
In an embodiment, referring to fig. 2 and 4, a liquid cooling pipe 112 may be disposed inside a central axis of the connecting structure 11 along the length direction, so that the connecting structure 11 may provide a fixing function, and at the same time, a cooling liquid may be introduced through the liquid cooling pipe 112 to absorb heat dissipated by the battery 2 mounted on the connecting structure 11 due to the power supply operation.
Further, in another embodiment, referring to fig. 2 and fig. 4, the liquid cooling pipeline 112 may further include at least one first flow channel 1121 and at least one second flow channel 1122, and the amount of the required cooling liquid may be reasonably controlled by setting the first flow channel 1121 and the second flow channel 1122, so that the liquid cooling pipeline 112 may be connected to a liquid cooling device with low flow output in a matching manner, so as to ensure that the cooling liquid with high flow rate can be introduced into the interior, and further achieve low flow output. In addition, the inlet of the second flow channel 1122 may be communicated with the outlet of the first flow channel 1121, so as to increase the cooling path of the liquid cooling pipe 112, increase the retention time of the cooling liquid in the liquid cooling pipe 112, increase the heat exchange efficiency of the liquid cooling pipe 112, and further improve the cooling effect of the liquid cooling device. In this embodiment, the inlet of the second flow channel 1122 and the outlet of the first flow channel 1121 may be communicated at an end portion of the liquid-cooling pipe 112, or may be communicated at a middle portion of the liquid-cooling pipe 112, and this embodiment is not limited in particular.
Further, in a preferred embodiment, referring to fig. 3, an inlet port 1123 and an outlet port 1124 may be disposed at one end of the liquid cooling pipe 112, and the provision of the inlet port 1123 and the outlet port 1124 at the same end of the liquid cooling pipe 112 may increase the convenience of connecting to an external liquid cooling device, and may also reduce the number of pipe joints connected to the liquid cooling pipe 112, so as to reduce the overall volume of the liquid cooling device, further simplify the overall structure of the battery assembly structure 1, and reduce the manufacturing cost. In addition, one of the liquid inlet port 1123 and the liquid outlet port 1124 may be disposed to communicate with the first flow path 1121, and the other one may be disposed to communicate with the second flow path 1122, for example, the first flow path 1121 corresponds to the liquid inlet port 1123 and the second flow path 1122 corresponds to the liquid outlet port 1124, or the first flow path 1121 corresponds to the liquid outlet port 1124 and the second flow path 1122 corresponds to the liquid inlet port 1123, and the corresponding relationship between the first flow path 1121 and the second flow path 1122 and the liquid inlet port 1123 and the liquid outlet port 1124 may be utilized to achieve smooth connection between the liquid cooling apparatus and the liquid cooling pipe 112.
In order to ensure the uniformity of the flow in the liquid-cooling pipe 112 through the first flow channel 1121 and the second flow channel 1122, in another preferred embodiment, referring to fig. 2, the total cross-sectional area of the nozzle of the liquid inlet port 1123 and the total cross-sectional area of the nozzle of the liquid outlet port 1124 may be set to be equal, so that the flow rates of the cooling liquid entering the liquid-cooling pipe 112 and the cooling liquid exiting the liquid-cooling pipe 112 are kept the same.
In order to add the casing protection to the battery assembly structure 1, in some examples, a split casing structure may be provided to provide the casing protection, however, the size of the split casing structure is large, and the installation steps are cumbersome, and in another embodiment, referring to fig. 6, the battery assembly structure 1 may further be provided with an integral wrapping structure 13 wrapping the plurality of batteries 2 and the connection structures 11, and the integral wrapping structure 13 is used to provide the casing protection to the battery assembly structure 1, so as to avoid the split structure, so that the casing of the battery assembly structure 1 is simplified in size and convenient to install.
Further, in an embodiment, the integral packaging structure 13 may be a heat shrinkable sleeve, and after the heat shrinkable sleeve is wrapped around the plurality of batteries 2 and the connection structures 11, the heat shrinkable sleeve is heated until the heat shrinkable sleeve is shrunk and tightly attached to the outer contour formed by the plurality of batteries 2 and the connection structures 11, so that the plurality of batteries 2 and the connection structures 11 can be flatly packaged and fixed, and the increase of the structural size of the battery combined structure 1 is avoided while the protection of the housing is provided.
In one embodiment, referring to fig. 5, a connection circuit board 15 may be disposed at one end of the connection structure 11, the connection piece 12 may further include a second connection piece 122, one end of the second connection piece 122 is connected to one electrode terminal of the battery 2, and the other end of the second connection piece may be connected to the circuit board 15, the first connection piece 121 of this embodiment connects two adjacent electrode terminals of the batteries 2 with opposite polarities, the plurality of batteries 2 may be integrated into an assembled battery with a total positive terminal and a total negative terminal, and the plurality of first connection pieces 121 are connected to the total positive terminal or the total negative terminal of the assembled battery through one end thereof and the other end is connected to the circuit board 15, and one total positive terminal and one total negative terminal are output outwards through the circuit board 15, so as to facilitate connection of the battery assembly structure 1 and an external device.
Generally, in order to save the production cost, the volume of the cap at the positive terminal of the battery 2 is small, however, the small volume of the cap does not facilitate the splicing of the plurality of batteries 2, and in another embodiment, referring to fig. 1 and 5, a conductive cap 14 may be provided at the positive terminal of the plurality of batteries 2, and the cap 14 and the cap at the positive terminal of the battery 2 are connected, so as to increase the contact area of the positive terminal of the battery 2 with other connecting parts, thereby facilitating the splicing of the plurality of batteries 2.
Referring to fig. 6, an embodiment of the present invention further provides an assembled battery pack, which includes a plurality of groups of batteries 2 and a battery assembly structure 1, each group of batteries 2 includes a plurality of batteries 2 connected in series, and the plurality of groups of batteries 2 are fixed by the battery assembly structure 1 to form the assembled battery pack with small verticality deviation, large capacity, small volume, convenient assembly, low cost, high safety performance and high energy density, wherein one end of the first connection tab 121 of this embodiment is connected to an electrode terminal of one group of batteries 2, the other end of the first connection tab is connected to an electrode terminal of one battery 2 of the other group of batteries 2, and polarities of the two batteries 2 connected to the first connection tab 121 are opposite. The battery assembly structure 1 in this embodiment may have the same structure and achieve the same effect as the battery assembly structure 1 in the above embodiment, and details are not repeated in this embodiment.
In the description herein, it is to be understood that the terms "upper", "lower", "right", and the like are used in a descriptive sense or a positional relationship based on the orientation shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used merely for descriptive purposes and are not intended to have any special meaning.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (10)
1. The utility model provides a battery composite structure, is applied to a plurality of batteries, its characterized in that, including connection structure and electrically conductive connection piece, connection structure all corresponds along length direction's every side and connects the side of battery, connection structure along length direction's side with be provided with the viscose layer between the side of battery, the connection piece includes a plurality of first connection pieces, adjacent two are connected at the both ends of first connection piece the electrode end of battery, and two the battery is connected the electrode polarity of first connection piece is opposite.
2. The battery assembly structure of claim 1, wherein the connecting structure is provided with a liquid cooling pipe along the length direction of the central shaft.
3. The battery pack structure of claim 2, wherein said liquid cooling conduit comprises at least one first flow channel and at least one second flow channel, an inlet of said second flow channel being in communication with an outlet of said first flow channel.
4. The battery assembly structure of claim 3, wherein one end of the liquid cooling pipeline is provided with a liquid inlet and a liquid outlet, one of the liquid inlet and the liquid outlet is communicated with the first flow passage, and the other is communicated with the second flow passage.
5. The battery assembly structure of claim 4, wherein the total cross-sectional area of the orifice of the liquid inlet is equal to the total cross-sectional area of the orifice of the liquid outlet.
6. The battery assembly structure of claim 1, further comprising an integral wrapping structure that wraps the plurality of batteries and the connecting structure.
7. The battery pack structure of claim 6, wherein the integral wrap structure is a heat shrink.
8. The battery assembly structure according to any one of claims 1 to 7, wherein a circuit board is provided at one end of the connecting structure, and the connecting sheet further comprises a second connecting sheet, one end of which is connected to one electrode terminal of the battery and the other end of which is connected to the circuit board.
9. The battery pack structure according to any one of claims 1 to 7, wherein the positive terminals of the plurality of cells are provided with a top cover that is electrically conductive.
10. An assembled battery pack comprising a plurality of groups of batteries and the battery assembly structure of any one of claims 1 to 9, wherein each group of batteries comprises a plurality of batteries connected in series, the battery assembly structure fixes a plurality of groups of the batteries, and one end of the first connecting piece is connected with the electrode terminal of one of the batteries of one of the groups of batteries, the other end of the first connecting piece is connected with the electrode terminal of one of the batteries of the other group of batteries, and the electrodes of the two batteries connected with the first connecting piece have opposite polarities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911276852.2A CN110931697A (en) | 2019-12-12 | 2019-12-12 | Battery combination structure and combined battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911276852.2A CN110931697A (en) | 2019-12-12 | 2019-12-12 | Battery combination structure and combined battery pack |
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| CN110931697A true CN110931697A (en) | 2020-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911276852.2A Pending CN110931697A (en) | 2019-12-12 | 2019-12-12 | Battery combination structure and combined battery pack |
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Effective date of registration: 20200429 Address after: 448000 No.38, Huifeng 7th Road, Zhongkai high tech Zone, Jingmen City, Hubei Province Applicant after: Hubei EVE Power Co.,Ltd. Address before: 516006 No. 38 Huifeng seven road, Zhongkai hi tech Zone, Huizhou, Guangdong Applicant before: EVE ENERGY Co.,Ltd. |
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