CN214099709U - Heat dissipation electric core group - Google Patents
Heat dissipation electric core group Download PDFInfo
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- CN214099709U CN214099709U CN202120269508.7U CN202120269508U CN214099709U CN 214099709 U CN214099709 U CN 214099709U CN 202120269508 U CN202120269508 U CN 202120269508U CN 214099709 U CN214099709 U CN 214099709U
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- current collector
- battery cell
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- battery
- heat
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- 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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Abstract
This patent provides a heat dissipation electric core group, and it can dispel the heat fast, and simple structure, easy production, and production efficiency is high, with low costs. The current collector of the battery core is provided with a current collector extension part extending to the side part and exceeding a battery core main body; the heat dissipation structure body is in direct contact with the current collector extension parts of two adjacent battery cores or in indirect contact with the current collector extension parts through an intermediate component so as to transfer heat.
Description
Technical Field
The patent relates to an electric core group composed of a plurality of electric cores, in particular to an electric storage device.
Background
In the use of the electricity storage device formed by the flaky current collector, the composite material and the like, for example, the heat dissipation is a crucial factor influencing the service life and the reliability of the battery cell, and the heat conductivity of the non-metallic material is poor, so that the heat dissipation is generally adopted from the direction perpendicular to the current collector, and the heat resistance is large, so that the heat exchange time of the battery cell is long, and the effect is poor. Therefore, there is a need for an electric core assembly and an assembly structure that can perform heat exchange rapidly and is easy to produce.
Disclosure of Invention
The purpose of this patent is to provide a heat dissipation electric core group, it can dispel the heat fast, and simple structure, easy production, and production efficiency is high, with low costs.
The heat dissipation battery pack comprises at least two battery cells, wherein each battery cell at least comprises a current collector and a composite material, and the current collector of each battery cell is provided with a current collector extension part extending to the side part to exceed the battery cell main body; the heat dissipation structure body is in direct contact with the current collector extension parts of two adjacent battery cores or in indirect contact with the current collector extension parts through an intermediate component so as to transfer heat.
The current collector in a typical cell includes a positive current collector and a negative current collector that are opposite to each other, and the current collector extension in this case may be a positive current collector extension or a negative current collector extension. The positive current collector extension is formed by extending the positive current collector to the side part beyond the cell main body (such as opposite positive and negative current collectors), and the negative current collector extension is formed by extending the negative current collector to the side part beyond the cell main body (such as opposite positive and negative current collectors). The heat dissipation structure is in direct contact with the positive electrode current collector extension portion or the negative electrode current collector extension portion or in indirect contact through an intermediate member to transfer heat.
However, some cells are cells with only one type of current collector, such as a solid-state battery cell, only a positive current collector, and the electrolyte is a negative electrode, in which case, the current collector extension is a positive current collector extension formed by extending the positive current collector beyond the cell body. At this time, the heat dissipation structure is in direct contact with the positive current collector extension portion thereof or in indirect contact through an intermediate member to transfer heat.
The intermediate member may be an outer packaging aluminium-plastic film or the like.
In the radiating electric core group, the inside of the radiating structure body is provided with the channel, and the channel is internally provided with the radiating medium.
The heat-dissipation battery core group comprises a shell covering each battery cell, and the shell is a heat-dissipation structure.
In the heat-radiating electric core set, the plurality of positive current collectors of the same electric core are attached to the plurality of positive current collector extension portions formed by extending the same side, or the plurality of negative current collectors of the same electric core are attached to the plurality of negative current collector extension portions formed by extending the same side.
The battery core of the heat dissipation battery pack further comprises a battery core outer wrapping body, and the battery core outer wrapping body wraps the current collector and the composite material. If the battery core is a battery core only provided with one current collector, such as a solid-state battery core, the battery core outer inclusion body is coated outside the current collector, the current collector extension part and the electrolyte; if the battery cell is provided with two current collectors, namely a positive current collector and a negative current collector, the battery cell outer wrapping body wraps the positive current collector, the negative current collector and the extension part of the current collectors; the heat dissipation structure body is contacted with the battery cell outer wrapping body outside the current collector extension part of the battery cell. Preferably, the battery core further comprises a positive lead-out tab or a negative lead-out tab, the positive lead-out tab is connected with the positive current collector extension part and extends out of the battery core outer enclosure body and the heat dissipation structure body, and the negative lead-out tab is connected with the negative current collector or the negative current collector extension part and extends out of the battery core outer enclosure body and the heat dissipation structure body.
In the heat dissipation battery pack, the battery cell is a cylindrical battery cell, and the heat dissipation structure body is in contact with the current collector extension part on the same side of each cylindrical battery cell.
In the heat dissipation battery pack, the battery cells are sheet battery cells, a plurality of sheet battery cells are arranged in the thickness direction to form a row of battery cells, and the heat dissipation structure body is in contact with the current collector extension parts of the battery cells on the same side in the row of battery cells. Preferably, the battery comprises at least two rows of battery cells, and the current collector extension parts adjacent to the two rows of battery cells are in contact with the heat dissipation structure together. Two rows of current collector extending parts adjacent to each other in the battery cell are arranged in a staggered mode in the thickness direction of the battery cell.
The beneficial effect of this patent: in this patent, the mass flow body extension that heat conductivility is good and heat radiation structure are used for electric core and external heat exchange to and the heat balance between each layer inside the electric core, so the radiating efficiency of electric core is high, the time is short, and is effectual, and the inside temperature gradient of electric core is little, has improved the life cycle of electric core. Meanwhile, the current collector extension part and the current collector are integrated, and only the original current collector is laterally extended, so that the size is increased, and the production is simple and convenient.
The channel is arranged in the heat dissipation structure body, the heat dissipation medium is arranged in the channel, and heat exchange can be further carried out between the flowing heat dissipation medium and the outside, so that the heat of the battery cell is quickly dissipated, and the heat dissipation effect is better.
The plurality of positive electrode current collector extension portions or the plurality of negative electrode current collector extension portions may be directly attached together, or may be partially or completely bent and then attached together.
When the shell covering each electric core is used as a heat radiation structure body, the heat radiation area is large, and the heat radiation effect is good.
And a positive lead-out tab or a negative lead-out tab is arranged, so that the electric core is conveniently and electrically connected with the outside.
When the positive current collector, the negative current collector, the composite material between the positive current collector and the negative current collector, the current collector extension part and the like are coated together by the battery cell outer bag body, the heat dissipation structure body is contacted with the battery cell outer bag body outside the current collector extension part of the battery cell, and therefore the heat of the current collector extension part can be rapidly conducted to the heat dissipation structure body through the battery cell outer bag body. Of course, if a positive lead-out tab or a negative lead-out tab exists, the positive lead-out tab or the negative lead-out tab needs to extend out of the battery cell outer enclosure body and the heat dissipation structure body, so that the lead-out tab is conveniently electrically connected with the outside.
When the electric core is a cylindrical electric core, the heat dissipation structure body is contacted with the current collector extension parts on the same side of each cylindrical electric core, and when the electric core is a sheet-shaped electric core, the heat dissipation structure body is contacted with the current collector extension parts on the same side of each electric core in a row of electric cores, so that the structure is simpler and easy to produce.
When two battery cores are arranged, the two adjacent current collector extension parts of the two battery cores are in contact with the heat dissipation structure body together, so that the arrangement is more compact, and the heat dissipation effect is better.
Drawings
FIG. 1 is a front view of embodiment 1;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a front view of embodiment 2;
FIG. 4 is a front view of embodiment 3;
FIG. 5 is a front view of embodiment 4;
FIG. 6 is a front view of embodiment 5;
FIG. 7 is a top view of embodiment 6;
fig. 8 is a left side view of fig. 7.
The battery comprises a positive current collector 1, a negative current collector 2, a positive lead-out tab 3, a negative lead-out tab 4, a composite material 5, a battery core outer enclosure 6, a side surface 61, an end surface 62, a heat conducting fin 7, a positive current collector extension 11, a negative current collector extension 22, a sheet-shaped battery core 100, a heat dissipation structure 200, a heat dissipation medium 300 and a cylindrical battery core 400.
Detailed Description
Example 1
Referring to fig. 1 and 2, the heat dissipation battery pack includes a plurality of sheet-shaped battery cells 100 and two heat dissipation structures 200. The plurality of sheet-shaped battery cells are arranged in a row in the thickness direction. Each battery cell 100 is provided with a plurality of positive current collectors 1 and negative current collectors 2 which are arranged at intervals in thickness, a positive lead-out tab 3, a negative lead-out tab 4, a composite material 5 positioned between the positive current collectors and the negative current collectors which are opposite to each other, and a battery cell outer inclusion 6.
Each positive current collector of the battery core extends towards the left side and exceeds a plurality of positive current collector extension parts 11 formed by the opposite surfaces of the positive and negative current collectors to be attached together, and each negative current collector extends towards the right side and exceeds a plurality of negative current collector extension parts 22 formed by the opposite surfaces of the positive and negative current collectors to be attached together.
The cell outer bag body 6 covers the positive current collector 1, the positive current collector extension part 11, the negative current collector 2, the negative current collector extension part 22 and the composite material 5.
The positive lead-out tab 3 is connected with the positive current collector extension 11 in a conduction manner and extends out of the cell outer enclosure 6, and the negative lead-out tab 4 is connected with the negative current collector extension 22 in a conduction manner and extends out of the cell outer enclosure 6.
The heat dissipation structure 200 has a channel therein, and a heat dissipation medium 300 is disposed in the channel.
The left heat dissipation structure 200 is in contact with the side surface 61 of the cell sheath 6, which covers the outside of the positive current collector extension 11 on the left side of each cell. The heat dissipation structure 200 on the right side is in contact with the side surface 61 of the cell sheath 6 covering the outside of the negative current collector extension 22 on the right side of each cell.
Example 2
Referring to fig. 3, the heat dissipating electric core set mainly differs from embodiment 1 in that: the left heat dissipation structure 200 is in contact with the side surface 61 and the end surface 62 of the cell sheath 6, which covers the outside of the positive electrode current collector extension 11 on the left side of each cell. The right heat dissipation structure 200 is in contact with the side surface 61 and the end surface 62 of the cell sheath 6 covering the outside of the negative current collector extension 22 on the right side of each cell.
Example 3
Referring to fig. 4, the heat dissipating electric core set mainly differs from embodiment 2 in that: it has two rows of cells and three heat dissipating structures 200. The left heat dissipation structure 200 is in contact with the side surface 61 and the end surface 62 of the cell sheath 6 covering the outside of the left row of cell positive electrode current collector extension portions 11. The right heat dissipation structure 200 is in contact with the side surface 61 and the end surface 62 of the cell sheath 6 covering the outside of the right row of cell negative current collector extensions 22. The middle heat dissipation structure 200 is in contact with the side surface 61 and the end surface 62 of the cell exterior enclosure 6 coated outside the left row of cell negative electrode current collector extension portions 22, and is also in contact with the side surface 61 and the end surface 62 of the cell exterior enclosure 6 coated outside the right row of cell positive electrode current collector extension portions 11.
Example 4 referring to the heat dissipating electric core pack shown in fig. 5, it is mainly different from example 1 in that: it has three rows of cells and four heat dissipating structures 200. The positive current collector extension parts 11 and the negative current collector extension parts 22 of the middle row of cells are respectively arranged in a staggered manner with the negative current collector extension parts 22 of the left row of cells and the positive current collector extension parts 11 of the right row of cells in the thickness direction of the cells.
The left heat dissipation structure 200 is in contact with the side surface 61 of the cell sheath 6 covering the outside of the left row of cell positive current collector extension portions 11. The right heat dissipation structure 200 is in contact with the side surface 61 of the cell sheath 6 covering the outside of the right row of cell negative current collector extensions 22. The two heat dissipation structures 200 in the middle are both in contact with the side surfaces 61 of the cell outer bag body 6 wrapped outside the staggered positive electrode current collector extension parts 11 and the negative electrode current collector extension parts 22.
Example 5 referring to fig. 6, a heat-dissipating electric core pack is mainly different from example 2 in that: the heat dissipation structure 200 is a casing that covers each sheet-shaped battery cell 100, and the casing is a heat dissipation structure. Of course, the heat dissipation structure body has no channel and no heat dissipation medium.
Example 6
Referring to the heat dissipation cell assembly shown in fig. 7 and 8, the heat dissipation structure is in contact with the current collector extension on the same side of each cylindrical battery cell.
Including a plurality of cylindrical battery cells 400 and two heat dissipation structure bodies 200. Each cylindrical battery cell 400 is provided with a positive current collector and a negative current collector which are wound into a cylindrical shape and arranged at intervals, a positive lead-out tab 3, a negative lead-out tab 4, a composite material positioned between the positive current collector and the negative current collector which are opposite, and a battery cell outer bag body 6.
The positive current collector of the cylindrical battery 400 extends to the left beyond the opposite surfaces of the positive and negative current collectors to form a positive current collector extension 11, and the negative current collector extends to the right beyond the opposite surfaces of the positive and negative current collectors to form a negative current collector extension 22.
The battery core outer bag body 6 covers the positive current collector, the positive current collector extension part 11, the negative current collector extension part 22 and the composite material.
The positive lead-out tab 3 is connected with the positive current collector extension 11 in a conduction manner and extends out of the cell outer enclosure 6, and the negative lead-out tab 4 is connected with the negative current collector extension 22 in a conduction manner and extends out of the cell outer enclosure 6.
The heat dissipation structure 200 has a channel therein, and a heat dissipation medium 300 is disposed in the channel.
The left heat dissipation structure 200 is in contact with the side surface 61 of the cell sheath 6, which covers the outside of the positive current collector extension 11, on the left side of each cylindrical cell. The right heat dissipation structure 200 is in contact with the side surface 61 of the cell sheath 6 covering the outside of the negative current collector extension 22 on the right side of each cylindrical cell.
Constitute the positive negative mass flow body of electric core in this patent, have the partly of the mass flow body of a polarity at least and surpass the opposite face boundary formation mass flow body extension between two mass flow bodies, the direct or folding back laminating of the mass flow body extension of multilayer homopolarity is in the same place, or set up the material that the heat conductivity is good then each other laminating in the mass flow body extension and be in the same place, constitute electric core from this, a plurality of aforementioned electric core arrange and constitute electric core group the mass flow body extension of electric core between part or whole set up the heat radiation structure body.
The cell, which may be any cell made of at least one current collector, may be a laminated structure or a wound flat structure or a wound cylindrical structure, without affecting the scope of protection of the claims of the present patent.
The number and the connection form of the heat dissipation structures do not affect the protection scope of the claims of the patent.
The structure, type, etc. of the heat dissipating structure does not affect the scope of protection of the claims of this patent.
The number of cells constituting the cell pack does not affect the scope of protection claimed in this patent.
The connection structure and the connection mode of the leading-out lug and the current collector do not influence the protection scope of the patent claims.
The existence and form of the cell sheath body do not affect the protection scope of the claims of the patent.
The electric connection between the battery cells, and the connection structure and method between the battery cell electrodes do not affect the protection scope of the claims of the patent.
The electric core group can be a row of electric cores or a plurality of rows of electric cores, and the arrangement number does not influence the protection scope of the claims of the patent.
The electric core group can be a combination of multiple columns, and can also be a staggered arrangement among multiple columns, which does not affect the protection scope of the patent claims.
The current collector refers to a substrate for coating a battery core composite material, such as copper, aluminum, graphene, etc., which constitutes a battery core, and the specific material, composition, etc. of the current collector do not affect the protection scope of the claims of the present patent.
The composite material belongs to the prior art, and the material, the structural form and the like of the composite material do not influence the protection scope of the patent claims.
The arrangement order of the current collector and the composite material does not affect the protection scope of the patent claims.
The heat dissipation structure may be an independent machine component or a combination of components, or may be a structure in which a fluid such as a heat dissipation medium flows through a space between the cell casing and the casing to cool the current collector extension.
Claims (10)
1. The utility model provides a heat dissipation electric core group, includes two at least electric cores, and electric core has a mass flow body and combined material at least, characterized by: the current collector of the battery cell is provided with a current collector extension part extending to the side part and exceeding the battery cell main body; the heat dissipation structure body is in direct contact with the current collector extension parts of two adjacent battery cores or in indirect contact with the current collector extension parts through an intermediate component so as to transfer heat.
2. The heat sink electrical core assembly of claim 1, wherein: the heat radiation structure body is internally provided with a channel, and a heat radiation medium is arranged in the channel.
3. The heat sink electrical core assembly of claim 1, wherein: the battery comprises a shell for coating each battery cell, wherein the shell is a heat dissipation structure.
4. The heat sink electrical core assembly of claim 1, wherein: the positive current collectors of the same battery cell are attached to the positive current collector extension portions formed by extending the positive current collectors to the same side, or the negative current collectors of the same battery cell are attached to the negative current collector extension portions formed by extending the negative current collectors to the same side.
5. The heat sink electrical core assembly of claim 1, wherein: the battery cell also comprises a battery cell outer wrapping body, and the battery cell outer wrapping body is wrapped outside the current collector, the composite material and the current collector extension part; the heat dissipation structure body is contacted with the battery cell outer wrapping body outside the current collector extension part of the battery cell.
6. The heat sink electrical core assembly of claim 5, wherein: the battery core also comprises a positive lead-out tab or a negative lead-out tab, the positive lead-out tab is connected with the extension part of the positive current collector and extends out of the battery core outer enclosure body and the heat dissipation structure body, and the negative lead-out tab is connected with the negative current collector or the extension part of the negative current collector and extends out of the battery core outer enclosure body and the heat dissipation structure body.
7. The heat sink electrical core assembly of claim 1, wherein: the battery cell is a cylindrical battery cell, and the heat dissipation structure body is in contact with the current collector extension parts on the same side of each cylindrical battery cell.
8. The heat sink electrical core assembly of claim 1, wherein: the battery cell is the slice electricity core, and a plurality of slice electricity cores are arranged in the thickness direction and are formed a list of electric core, and the heat radiation structure body contacts with the mass flow body extension of each electric core with one side in a list of electric core.
9. The heat sink electrical core assembly of claim 8, wherein: the battery comprises at least two rows of battery cores, wherein two rows of current collector extension parts adjacent to the battery cores are in contact with a heat dissipation structure together.
10. The heat sink electrical core assembly of claim 9, wherein: two rows of current collector extending parts adjacent to each other in the battery cell are arranged in a staggered mode in the thickness direction of the battery cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120269508.7U CN214099709U (en) | 2021-01-29 | 2021-01-29 | Heat dissipation electric core group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120269508.7U CN214099709U (en) | 2021-01-29 | 2021-01-29 | Heat dissipation electric core group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214099709U true CN214099709U (en) | 2021-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120269508.7U Active CN214099709U (en) | 2021-01-29 | 2021-01-29 | Heat dissipation electric core group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214099709U (en) |
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2021
- 2021-01-29 CN CN202120269508.7U patent/CN214099709U/en active Active
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