CN216054977U - Cylindrical lithium battery module for energy storage of container - Google Patents
Cylindrical lithium battery module for energy storage of container Download PDFInfo
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- CN216054977U CN216054977U CN202121687884.4U CN202121687884U CN216054977U CN 216054977 U CN216054977 U CN 216054977U CN 202121687884 U CN202121687884 U CN 202121687884U CN 216054977 U CN216054977 U CN 216054977U
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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
The utility model relates to a lithium battery module, in particular to a cylindrical lithium battery module for container energy storage. The technical scheme adopted by the utility model is as follows: the battery comprises a cylindrical battery cell, a combined support, a busbar and a gasket, wherein the combined support is divided into an upper support and a lower support, a battery cell positive end placing groove is recessed in the lower side of the upper support, a positive electrode hole is formed in the middle of the battery cell positive end placing groove, a recessed battery cell negative end placing groove is formed in the upper side surface of the lower support, and a negative electrode hole is formed in the middle of the battery cell negative end placing groove; the combined bracket is provided with a positive bus bar at the upper part and a negative bus bar at the lower part. The equipment of cylinder electricity core support, good heat dissipation, the charge-discharge multiplying power is high. The bus bar is specially designed for bus output, the module internal resistance is small, and the discharge heat productivity is low. The positive and negative electrode tabs are output in a plane, and the fixed threads and the fastening gaskets are designed, so that the serial-parallel combination is convenient, and the contact internal resistance is small.
Description
Technical Field
The utility model relates to a lithium battery module, in particular to a cylindrical lithium battery module for container energy storage.
Background
With the development of science and technology and the improvement of living standard of people, the consumption of electric energy is larger and larger. Due to the increasingly prominent environmental problems, the development of clean energy sources, such as hydraulic power, wind power, solar power, etc., is urgent. In order to improve the efficient utilization of clean energy, a miniaturized, movable integrated container chemical energy storage system formally enters the visual field of people.
The container chemical energy storage system can be produced in an industrial mode, has the characteristics of strong environmental adaptability, simplicity and convenience in installation and high expandability, and at present, more and more container chemical energy storage systems appear in the whole country and even all over the world.
At present, the battery cell used by the container energy storage system is composed of a soft-package battery cell, a cylindrical battery cell and a battery cell for using automobile retirement. No matter which kind of electric core, container energy storage system all have the energy storage big, and inside heat dissipation requires highly, manages complicated problem.
In the container energy storage system using the cylindrical battery cells, the cylindrical battery cells are arranged closely, and the stability of heat dissipation and battery cell connection is very important for stable operation of the container energy storage system.
Disclosure of Invention
The utility model aims to provide a cylindrical lithium battery module for container energy storage, which can be applied to the use of large container energy storage.
In order to achieve the purpose, the utility model adopts the technical scheme that:
the cylindrical lithium battery module for energy storage of the container comprises a cylindrical battery cell, a combined support, a busbar and a gasket, wherein the combined support is divided into an upper support and a lower support, a battery cell positive end placing groove is recessed in the lower side of the upper support, a positive electrode hole is formed in the middle of the battery cell positive end placing groove, a recessed battery cell negative end placing groove is formed in the upper side surface of the lower support, and a negative electrode hole is formed in the middle of the battery cell negative end placing groove;
placing the positive end of the cylindrical battery cell into a battery cell positive end placing groove of the upper support, wherein the positive electrode penetrates through and leaks out of the positive electrode hole, placing the negative end of the cylindrical battery cell into a battery cell negative end placing groove of the lower support, and penetrating through and leaking out of the negative electrode hole;
the combined support is provided with an anode bus bar on the upper part, the anode bus bar is contacted and welded with the anode end of the cylindrical battery cell, the combined support is provided with a cathode bus bar on the lower part, and the cathode bus bar is contacted and welded with the cathode end of the cylindrical battery cell.
Preferably, a fixing column is arranged on the side face where the upper support core anode end placing groove of the combined support is located, a screw hole is formed in the end face of the fixing column, a screw through hole is formed in the side face where the battery core cathode end placing groove of the corresponding position of the lower support is located, and the upper support and the lower support of the combined support are fastened and then screwed into the upper screw hole of the fixing column through screws to fix the upper support and the lower support.
Preferably, the battery cell modules are formed by transversely and vertically arranging a plurality of cylindrical battery cells, the battery cell modules are fixed together by an upper support and a lower support of the combined support, and heat dissipation round holes are formed in the upper support of the combined support and adjacent to positive electrode holes.
Preferably, a convex supporting edge is arranged on the periphery of one upper side face of the upper support, a supporting column is arranged at the connecting position of the positive electrode hole and the positive electrode hole, a convex retaining edge is arranged on the edge of one side of the upper support, and a long groove is arranged in the retaining edge and is perpendicular to the upper side face of the upper support.
Preferably, a convex supporting edge is arranged on the periphery of one lower side surface of the lower support, a supporting column is arranged at the connecting position of the negative electrode hole and the negative electrode, a convex retaining edge is arranged on the edge of one side of the lower support, and a long groove is arranged in the retaining edge and is perpendicular to the lower side surface of the lower support.
Further preferably, the positive busbar and the negative busbar are of a copper-nickel composite structure and comprise copper sheets and nickel sheets, the copper sheets and the nickel sheets are connected into a whole through laser spot welding, the copper sheets are of a bending structure, bolt mounting holes are formed in bending positions and used for mounting bolts to achieve series-parallel connection of adjacent modules, spot welding lugs are uniformly distributed on the nickel sheets according to the positions of the battery cell positive end placing grooves, and the spot welding lugs are spot-welded on positive and negative end faces of the cylindrical battery cell to achieve parallel connection of the battery cell.
Further preferably, the anode busbar and the cathode busbar are provided with round holes at positions adjacent to the spot-welding lug, and after the anode busbar and the cathode busbar are installed on the cylindrical battery core, the round holes and the heat dissipation round holes are of a concentric structure, so that module heat dissipation is realized.
The module further preferably comprises a gasket, the gasket is a red copper piece and is arranged in the long groove, a mounting hole is formed in the gasket, a copper nut is arranged on the lower plane of the long groove, and the bolt mounting hole, the mounting hole and the copper nut are concentric structures, so that the electrode lugs are tightly contacted with the connecting piece when the modules are connected in series and in parallel, and the contact internal resistance is reduced.
Preferably, the upper bracket and the lower bracket of the combined bracket are respectively integrally formed brackets made of flame-retardant ABS.
The utility model has the advantages that: the equipment of cylinder electricity core support, good heat dissipation, the charge-discharge multiplying power is high. The bus bar is specially designed for bus output, the module internal resistance is small, and the discharge heat productivity is low. The positive and negative electrode tabs are output in a plane, and the fixed threads and the fastening gaskets are designed, so that the serial-parallel combination is convenient, the contact internal resistance is small, various safety distances and safety protection structural designs are adopted, and the safety is high.
Drawings
Fig. 1 is a schematic diagram of an appearance structure of a cylindrical lithium battery module for energy storage of a container;
fig. 2 is an exploded structural schematic diagram of a cylindrical lithium battery module for energy storage of a container;
FIG. 3 is a schematic view of the lower frame structure of the combination frame;
FIG. 4 is a schematic structural view of an upper bracket of the combination bracket;
FIG. 5 is a schematic view of an external structure of the bus bar;
FIG. 6 is a schematic view of the gasket;
in the drawings: 1. a cylindrical cell; 2. a combined bracket; 3. a positive electrode bus bar; 4. a gasket; 5. a battery cell positive terminal placing groove; 6. fixing a column; 7. a heat dissipation circular hole; 8. a support rim; 9. a support pillar; 10. a long groove; 11. a copper nut; 12. blocking edges; 14. a copper sheet; 15. a nickel sheet; 16. a bolt mounting hole; 17. spot welding lug, 18, round hole, 19, mounting hole, 20, battery core negative pole end placing groove, 21, negative electrode bus bar, 22, positive electrode hole, 23, negative electrode hole, 201 upper support, 202 lower support.
Detailed Description
The utility model will be further described with reference to the following figures and specific examples:
the cylindrical battery cell 1 has long cycle life, large monomer capacity and high safety performance, and is suitable for the use of a container energy storage system.
The cylindrical lithium battery module for energy storage of the container has a structure shown in fig. 1 and comprises a cylindrical battery cell 1, a combined support 2, a positive bus bar 3, a negative bus bar 21 and a gasket 4. The combined support is divided into an upper support 201 and a lower support 202, the lower side surface of the upper support 201 is provided with an indent serving as a battery cell positive end placing groove 5, a positive electrode hole 22 is formed in the middle of the battery cell positive end placing groove 5, the upper side surface of the lower support 202 is provided with an indent battery cell negative end placing groove 20, and a negative electrode hole 23 is formed in the middle of the battery cell negative end placing groove 20.
The positive end of the cylindrical battery core 1 is placed in the battery core positive end placing groove 5 of the upper support 201, the positive electrode penetrates through and leaks out of the positive electrode hole 22, the negative end of the cylindrical battery core 1 is placed in the battery core negative end placing groove 20 of the lower support 202, and the negative electrode penetrates through and leaks out of the negative electrode hole 23.
The combined support 2 is provided with a positive bus bar 3 at the upper part, the positive bus bar 3 is contacted and welded with the positive end of the cylindrical battery cell 1, the combined support 2 is provided with a negative bus bar 21 at the lower part, and the negative bus bar 21 is contacted and welded with the negative end of the cylindrical battery cell 1.
Fig. 2 is an exploded view of a cylindrical lithium battery module for energy storage of a container, and an upper bracket 201 and a lower bracket 202 of a combined bracket 2 are respectively integrally formed brackets made of flame-retardant ABS.
The side of 5 places in the positive terminal standing groove of upper bracket 201 electric core of built-up support 2 is equipped with fixed column 6, the terminal surface of fixed column 6 is equipped with the screw hole, the side of 20 places in the corresponding position electric core negative pole end standing groove of lower carriage 202 is equipped with the screw through-hole, twist fixed column 6 upper screw hole through the screw behind the upper bracket 201 of built-up support 2 and the lock of lower carriage 202 and fix upper bracket 201 and lower carriage 202, electric core module is constituteed to the horizontal vertical range of a plurality of cylinder electricity cores 1, the upper bracket 201 and the lower carriage 202 of built-up support fix electric core module together, make whole electric core module become a whole behind the cylinder electricity core.
And a heat dissipation round hole 7 is arranged at the position adjacent to the positive electrode hole 22 on the upper bracket 201 of the combined bracket 2. The heat dissipation round hole 7 is convenient for module heat dissipation and reduces module weight.
The detailed structure of the combination bracket will be described in detail, fig. 3 is a structure diagram of the lower bracket, fig. 4 is a structure diagram of the upper bracket,
a convex supporting edge 8 is arranged on the periphery of one upper side face of the upper support 201, a supporting column 9 is arranged at the connecting position of the positive electrode hole 22 and the positive electrode hole 22, a convex flange 12 is arranged on the edge of one side face of the upper support 201, and a long groove 10 is arranged in the flange and is perpendicular to the upper side face of the upper support 201. The support column 9 supports the anode busbar and keeps a proper distance from the upper bracket. The support rim 8 and the support posts 9 keep the modules in a sufficiently safe distance after assembly.
A convex supporting edge 8 is arranged on the periphery of the lower side surface of the lower support 202, and a supporting column 9 is also arranged at the connecting position of the negative electrode hole 23 and the negative electrode hole 23. One side edge of the upper bracket 201 and one side edge of the lower bracket 202 are respectively provided with a convex flange 12, and a long groove 10 is arranged in the flange. The elongated slot is perpendicular to the underside of the lower bracket 202. The support column 9 supports the cathode bus bar and keeps a proper distance with the lower bracket.
The positive busbar 3 and the negative busbar 21 are identical in structure, and are both copper-nickel composite structures as shown in fig. 5, and comprise copper sheets 14 and nickel sheets 15, the copper sheets 14 are connected into a whole through laser spot welding, the bending structure is adopted for the copper sheets 14, bolt mounting holes 16 are formed in the bending position and used for mounting bolts to realize series-parallel connection of adjacent modules, spot welding lugs 17 are uniformly distributed on the nickel sheets 15 according to the positions of the battery cell positive end placing grooves 5, and the spot welding lugs 17 are spot-welded on the positive and negative end faces of the cylindrical battery cell 1 to realize parallel connection of the battery cells.
The anode busbar 3 and the cathode busbar 21 are provided with round holes 18 at positions adjacent to the spot-welding lug 17, and after the anode busbar 21 and the cathode busbar 21 are installed on the cylindrical battery core, the round holes 18 and the heat dissipation round holes 7 are of a concentric structure, so that module heat dissipation is realized.
The gaskets 4 are respectively arranged in the elongated slots 10 of the upper support and the lower support, the gaskets 4 are made of red copper pieces and are arranged in the elongated slots 10, mounting holes 19 are formed in the gaskets, copper nuts 11 are arranged on the lower plane of the elongated slots 10, and the bolt mounting holes 16, the mounting holes 19 and the copper nuts 11 are of concentric structures and are used for series and parallel connection of subsequent modules, so that the tight contact between the lugs and the connecting pieces when the modules are connected in series and parallel is ensured, and the internal contact resistance is reduced.
The cylindrical battery cell bracket is assembled, so that the heat dissipation performance is good, and the charge-discharge multiplying power is high. The bus bar is specially designed for bus output, the module internal resistance is small, and the discharge heat productivity is low. The positive and negative electrode tabs are output in a plane, and the fixed threads and the fastening gaskets are designed, so that the serial-parallel combination is convenient, the contact internal resistance is small, various safety distances and safety protection structural designs are adopted, and the safety is high.
Claims (9)
1. A cylindrical lithium battery module for container energy storage comprises a cylindrical battery cell (1), a combined support (2), a positive busbar (3), a negative busbar (21) and a gasket (4), and is characterized in that the combined support is divided into an upper support (201) and a lower support (202), a battery cell positive end placing groove (5) is recessed in the lower side of the upper support (201), a positive electrode hole (22) is formed in the middle of the battery cell positive end placing groove (5), a recessed battery cell negative end placing groove (20) is formed in the upper side surface of the lower support (202), and a negative electrode hole (23) is formed in the middle of the battery cell negative end placing groove (20);
the positive end of the cylindrical battery cell (1) is placed in the battery cell positive end placing groove (5) of the upper support (201), the positive electrode penetrates through and leaks out of the positive electrode hole (22), the negative end of the cylindrical battery cell (1) is placed in the battery cell negative end placing groove (20) of the lower support (202), and the negative electrode penetrates through and leaks out of the negative electrode hole (23);
the combined support (2) is provided with a positive busbar (3) at the upper part, the positive busbar (3) is contacted and welded with the positive end of the cylindrical battery cell (1), the combined support (2) is provided with a negative busbar (21) at the lower part, and the negative busbar (21) is contacted and welded with the negative end of the cylindrical battery cell (1).
2. The cylindrical lithium battery module for energy storage in containers as claimed in claim 1, wherein a fixing post (6) is disposed on a side surface of the combined support (2) where the cell positive end placing groove (5) is disposed on the upper support (201) and the cell negative end placing groove (20) is disposed on a side surface of the fixing post (6), a screw hole is disposed on an end surface of the fixing post (6), a screw through hole is disposed on a side surface of the cell negative end placing groove (20) corresponding to the lower support (202), and the upper support (201) and the lower support (202) are fastened and then screwed into the screw hole of the fixing post (6) through a screw to fix the upper support (201) and the lower support (202).
3. The cylindrical lithium battery module for energy storage in containers as claimed in claim 1, wherein a plurality of cylindrical battery cells (1) are arranged in a horizontal direction and a vertical direction to form a battery cell module, the battery cell module is fixed by an upper bracket (201) and a lower bracket (202) of a combined bracket, and heat dissipation round holes are formed in positions adjacent to the positive electrode holes (22) in the upper bracket (201) of the combined bracket (2).
4. The cylindrical lithium battery module for energy storage of containers as claimed in claim 1, wherein a raised support edge (8) is provided on a periphery of an upper side of the upper support (201), a support column (9) is provided at a position where the positive electrode hole (22) is connected to the positive electrode hole (22), a raised retaining edge (12) is provided on an edge of one side of the upper support (201), and an elongated slot (10) is provided in the retaining edge, and is perpendicular to the upper side of the upper support (201).
5. The cylindrical lithium battery module for energy storage of containers as claimed in claim 1, wherein a protruding support edge (8) is provided at a periphery of a lower side surface of the lower support (202), a support column (9) is provided at a position where the negative electrode hole (23) is connected to the negative electrode hole (23), a protruding flange (12) is provided at an edge of one side of the lower support (202), and an elongated slot (10) is provided in the flange and is perpendicular to the lower side surface of the lower support (202).
6. The cylindrical lithium battery module for energy storage of the container as claimed in claim 5, wherein the positive busbar (3) and the negative busbar (21) are of a copper-nickel composite structure and comprise a copper sheet (14) and a nickel sheet (15) which are connected into a whole by laser spot welding, the copper sheet (14) is of a bending structure, a bolt mounting hole (16) is formed in a bending position and used for mounting a bolt to realize series-parallel connection of adjacent modules, spot welding lugs (17) are uniformly distributed on the nickel sheet (15) according to the position of the battery cell positive end placing groove (5), and the spot welding lugs (17) are spot-welded on the positive and negative end faces of the cylindrical battery cell (1) to realize parallel connection of the battery cells.
7. The cylindrical lithium battery module for energy storage of containers as claimed in claim 6, wherein the positive busbar (3) and the negative busbar (21) are provided with circular holes (18) at positions adjacent to the spot welding tabs (17), and after the positive busbar (3) and the negative busbar (21) are mounted on the cylindrical battery cell, the circular holes (18) and the heat dissipation circular holes (7) are in a concentric structure, so that heat dissipation of the module is realized.
8. The cylindrical lithium battery module for energy storage of the container as claimed in claim 6, further comprising a gasket (4), wherein the gasket (4) is a red copper member, is installed in the elongated slot (10), and has a mounting hole (19), the lower plane of the elongated slot (10) is provided with a copper nut (11), the bolt mounting hole (16), the mounting hole (19) and the copper nut (11) are concentric, so that the electrode tabs and the connecting member are tightly contacted when the modules are connected in series and in parallel, and the internal contact resistance is reduced.
9. The cylindrical lithium battery module for energy storage of containers as claimed in claim 1, wherein the upper support (201) and the lower support (202) of the combined support (2) are respectively an integrally formed support made of flame-retardant ABS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121687884.4U CN216054977U (en) | 2021-07-23 | 2021-07-23 | Cylindrical lithium battery module for energy storage of container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121687884.4U CN216054977U (en) | 2021-07-23 | 2021-07-23 | Cylindrical lithium battery module for energy storage of container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216054977U true CN216054977U (en) | 2022-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121687884.4U Active CN216054977U (en) | 2021-07-23 | 2021-07-23 | Cylindrical lithium battery module for energy storage of container |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216054977U (en) |
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2021
- 2021-07-23 CN CN202121687884.4U patent/CN216054977U/en active Active
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