CN114050368A - Battery cell module support with high flatness and shock-absorbing function - Google Patents
Battery cell module support with high flatness and shock-absorbing function Download PDFInfo
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- CN114050368A CN114050368A CN202111530484.7A CN202111530484A CN114050368A CN 114050368 A CN114050368 A CN 114050368A CN 202111530484 A CN202111530484 A CN 202111530484A CN 114050368 A CN114050368 A CN 114050368A
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- battery cell
- tongue piece
- module support
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- 238000003466 welding Methods 0.000 claims abstract description 116
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 96
- 239000004020 conductor Substances 0.000 claims abstract description 57
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 48
- 230000005611 electricity Effects 0.000 claims abstract description 16
- 238000010521 absorption reaction Methods 0.000 claims abstract description 12
- 230000035939 shock Effects 0.000 claims abstract description 8
- 239000011810 insulating material Substances 0.000 claims description 10
- 238000013016 damping Methods 0.000 claims description 3
- 229910000679 solder Inorganic materials 0.000 abstract description 8
- 230000003139 buffering effect Effects 0.000 abstract description 4
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 210000002105 tongue Anatomy 0.000 description 55
- 238000009434 installation Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004070 electrodeposition Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 240000005979 Hordeum vulgare Species 0.000 description 1
- 235000007340 Hordeum vulgare Nutrition 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
-
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
-
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
- H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
-
- 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
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
-
- 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
- H01M50/514—Methods for interconnecting adjacent batteries or cells
- H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
-
- 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
- H01M50/572—Means for preventing undesired use or discharge
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a battery cell module support with high flatness and a shock absorption function, which relates to the technical field of battery modules and comprises a conductor bottom plate, a plurality of first battery cells and a plurality of second battery cells, wherein a plurality of welding tongue pieces are uniformly arranged on the top surface and the bottom surface of the conductor bottom plate, and the plurality of second battery cells are correspondingly connected with the welding tongue pieces on the bottom surface of the conductor bottom plate one by one. Through the nickel strap that will weld the tongue piece for being the spring form setting, the nickel strap that the spring form set up has certain elasticity, can guarantee the plane degree of each second electricity core electrode through the compression welding tongue piece when the welding. And the nickel strap that the spring form set up can produce the deformation of certain degree at the welding face normal direction, can be used to the absorption vibration, and the vibration between buffering second electric core and the conductor bottom plate has reduced the risk that the solder joint appears tearing, has effectively avoided the solder joint to tear electrically conductive inhomogeneous, the inhomogeneous scheduling problem that generates heat that leads to, and then has avoided local generating heat to arouse electric core inefficacy or the problem of thermal runaway.
Description
Technical Field
The invention belongs to the technical field of battery modules, and particularly relates to a battery cell module support with high flatness and a damping function.
Background
In the field of batteries, batteries are a general term, and cells, modules and battery packs are different stages in battery applications. In the battery, in order to safely and effectively manage hundreds of single electric cores, the electric cores are not randomly placed in a shell of the power battery, but are orderly placed according to modules and packages. The smallest unit is a battery cell, a group of battery cells can form a module, and several modules can form a battery pack.
Battery cell: the electric core is the minimum unit of the power battery and is also an electric energy storage unit, and the electric core has high energy density to store electric energy as much as possible. In addition, the service life of the battery cell is also the most critical factor, and the damage of any one battery cell can cause the damage of the whole battery pack.
The module: when a plurality of electric cores are packaged together by the same shell frame, and contact is carried out with the outside through unified boundary, a module is formed.
A battery pack: when several modules are controlled or managed together by the BMS and the thermal management system, the unified whole is called a battery pack.
The current cylindrical battery cell modules are grouped, and the battery cell is mechanically fixed by a plastic module bracket; the positive electrode and the negative electrode of the battery core are connected in series and are welded and conducted by a nickel strap; the insulation between two adjacent electric core modules depends on technical schemes of pasting highland barley paper, installing plastic insulation boards additionally and the like, and the insulation effect is unstable. The defects of various battery module parts, relatively low energy density, difficult assembly process, easy electric safety accidents, high cost and the like are caused.
Meanwhile, a tongue piece is cut at the joint of the positive electrode and the negative electrode of each battery cell under each battery cell and is connected with the electrodes in a welding mode to conduct electricity. At present, most of the nickel strap tongues are E-shaped. Before welding, the requirement on the assembly precision of all the coplanar cell electrodes is extremely high, and if the cell electrodes are not on the same plane, the cell electrodes may not be welded. After welding, the tongue piece is short and cannot deform along the normal direction of the welding surface to absorb vibration. If the electric core vibrates for a long time, the welding spot can be torn, the electric conduction is uneven, the heating is uneven, and the electric core is failed or thermal runaway is caused due to local heating.
Disclosure of Invention
In order to solve the problems that in the prior art, when a module support is connected with a battery cell, the flatness of a battery cell electrode is difficult to guarantee, and the problem of vibration between the battery cell and the module support cannot be solved, the invention aims to provide the battery cell module support with high flatness and a damping function.
The technical scheme adopted by the invention is as follows:
the utility model provides an electricity core module support with high plane degree and shock-absorbing function, install a plurality of first electricity cores and a plurality of second electricity core on the module support, the module support includes the conductor bottom plate, a plurality of welding tongue piece and a plurality of welding point group, the edge of conductor bottom plate is provided with a plurality of turn-ups curb plates, the lateral wall of turn-ups curb plate covers there is insulating material, conductor bottom plate top surface and bottom surface all evenly are provided with a plurality of welding tongue pieces, all be provided with welding point group around a plurality of welding tongue pieces, a plurality of first electricity cores are connected with the welding point group one-to-one of conductor bottom plate top surface, a plurality of second electricity cores are connected with the welding tongue piece one-to-one of conductor bottom plate bottom surface. The welding tongue piece comprises a nickel strap which is spirally arranged, and the second electric core is connected with the nickel strap.
Optionally, the group of soldering points on the top surface of the conductor base plate is connected to the negative electrode of the first cell.
Optionally, the soldering tongue on the bottom side of the conductor base plate is connected to the positive electrode of the second cell.
Optionally, the nickel strap is 0.1-0.2 mm thick, one end of the nickel strap is welded and fixed on the conductor bottom plate, the other end of the nickel strap is spirally arranged in a spring shape, and the welding tongue piece further comprises a positioning groove which is arranged on the bottom plate of the rotation center of the nickel strap.
Optionally, the positioning groove is a linear groove, and the linear groove is formed in the bottom plate of the rotation center of the nickel strap.
Optionally, the welding point group includes a plurality of cylindrical bosses, and the plurality of cylindrical bosses are uniformly distributed on the same circumference around the welding tongue piece.
Optionally, the welding point group includes six cylindrical bosses, and the six cylindrical bosses are uniformly distributed on the same circumference around the welding tongue piece.
Optionally, the plurality of cylindrical bosses are circumscribed on the same circumference, the circumscribed circumference of the plurality of cylindrical bosses forms a mounting hole, and the negative electrode of the first battery cell is mounted in the mounting hole.
The invention has the beneficial effects that:
1) the second battery cell is connected with the welding tongue piece, the welding tongue piece is a nickel strap arranged in a spring shape, the nickel strap arranged in the spring shape has certain elasticity, and the flatness of each second battery cell electrode can be ensured by compressing the welding tongue piece during welding. And the nickel strap that the spring form set up can produce the deformation of certain degree at the welding face normal direction, can be used to the absorption vibration, and the vibration between buffering second electric core and the conductor bottom plate has reduced the risk that the solder joint appears tearing, has effectively avoided the solder joint to tear electrically conductive inhomogeneous, the inhomogeneous scheduling problem that generates heat that leads to, and then has avoided local generating heat to arouse electric core inefficacy or the problem of thermal runaway.
Meanwhile, the welding tongue piece further comprises a positioning groove, the positioning groove is formed in the bottom plate of the rotation center of the nickel strip, and when the positioning groove is used for connecting the welding tongue piece and the second battery cell, positioning is provided for a welding gun, so that the precision requirement of the electrode position of the second battery cell during welding can be effectively reduced, and the assembly welding difficulty is reduced.
2) The invention provides a battery cell module support with high flatness and a shock absorption function, which comprises a conductor bottom plate, a plurality of first battery cells and a plurality of second battery cells, wherein a plurality of welding tongue pieces are uniformly arranged on the top surface and the bottom surface of the conductor bottom plate, a plurality of welding point groups are uniformly arranged around the welding tongue pieces, the first battery cells are correspondingly connected with the welding point groups on the top surface of the conductor bottom plate one by one, and the second battery cells are correspondingly connected with the welding tongue pieces on the bottom surface of the conductor bottom plate one by one. Through connecting a plurality of first electric cores and a plurality of second electric core respectively at the top surface and the bottom surface of conductor bottom plate, first electric core and second electric core respectively with the welding point group and the welding tongue piece connection of conductor bottom plate both sides, reduced first electric core and second electric core and the required part kind of module support equipment greatly, reduce the whole weight of module support to promote the energy density of electric core module, still reduce the assembly process degree of difficulty, saved the cost.
3) The edge of the conductor bottom plate is provided with the plurality of flanging side plates, the outer side walls of the flanging side plates are covered with the insulating material, the flanging side plates made of the insulating material can effectively separate two adjacent groups of module supports, the insulation is stable, and the electric safety accidents can be effectively prevented from being caused.
4) The first battery cell is connected with the welding point group, the empty space between the adjacent first battery cells is utilized during installation, a plurality of cylindrical bosses are arranged in the space and externally connected with the same circumference, and the circumference is the installation hole for positioning and placing the cylindrical first battery cell. Therefore, a circle of wall thickness material around the module is not needed to form the mounting hole, so that the space is saved, and the volume density of the module is improved. The module has simple structure, small size, easy control of precision and reduced assembly difficulty.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of the welding tongue piece of the present invention, and the rest of the structure is omitted.
Fig. 3 is a schematic structural view of the welding point group in the present invention, and the rest of the structure is omitted.
Fig. 4 is a schematic top view of the welding point set in the present invention, and the rest of the structure is omitted.
In the figure: 1-a first battery cell, 2-a conductor bottom plate, 3-a flanging side plate, 4-a welding tongue piece, 41-a positioning groove, 5-a welding point group, 51-a cylindrical boss and 6-a second battery cell.
Detailed Description
The first embodiment is as follows:
in this embodiment, as shown in fig. 1, an electric core module support with high plane degree and shock-absorbing function, install a plurality of first electric cores 1 and a plurality of second electric core 6 on the module support, the module support includes conductor bottom plate 2, a plurality of welding tongue piece 4 and a plurality of welding point group 5, the edge of conductor bottom plate 2 is provided with a plurality of turn-ups curb plate 3, the lateral wall of turn-ups curb plate 3 covers there is insulating material, 2 top surfaces of conductor bottom plate and bottom surface all evenly are provided with a plurality of welding tongue piece 4, all be provided with welding point group 5 around a plurality of welding tongue piece 4, a plurality of first electric cores 1 are connected with the welding point group 5 one-to-one of 2 top surfaces of conductor bottom plate, a plurality of second electric cores 6 are connected with the welding tongue piece 4 one-to-one of 2 bottom surfaces of conductor bottom plate.
In this embodiment, specifically, through connecting a plurality of first electric cores 1 and a plurality of second electric cores 6 respectively at the both sides of conductor bottom plate 2, first electric core 1 and second electric core 6 are connected with welding point group 5 and welding tongue piece 4 of conductor bottom plate 2 both sides respectively, have reduced the required part kind of electric core module equipment greatly, reduce electric core module weight to promote the energy density of electric core module, still reduce the assembly process degree of difficulty, saved the cost.
In this embodiment, as shown in fig. 1, the welding point groups 5 on the top surface of the conductor substrate 2 are welded to the negative electrode of the first battery cell 1, and the welding point groups 5 are all welded to the negative electrode of the first battery cell 1 in a one-to-one correspondence, where only one connection between the first battery cell 1 and the conductor substrate 2 is shown in the figure.
In the present embodiment, as shown in fig. 1, 3 and 4, the welding point group 5 includes a plurality of cylindrical bosses, and the plurality of cylindrical bosses are uniformly distributed on the same circumference around the welding tongue 4.
In the present embodiment, as shown in fig. 1, 3 and 4, the welding point group 5 includes six cylindrical bosses 51, and the six cylindrical bosses 51 are uniformly distributed on the same circumference around the welding tongue 4.
In the present embodiment, as shown in fig. 1, 3 and 4, a plurality of cylindrical bosses 51 circumscribe the same circumference, the circumscribe circumference of the plurality of cylindrical bosses 51 forms a mounting hole, and the negative electrode of the first battery cell 1 is mounted in the mounting hole.
In the present embodiment, specifically, the welding point group 5 includes six cylindrical bosses, and the six cylindrical bosses are uniformly distributed on the same circumference around the welding tongue 4.
In the current module bracket technology, the connection between the negative electrode of the battery cell and the module bracket is realized by positioning the battery cell through a circular hole, and the module bracket is composed of a series of circular holes. The round holes are formed by surrounding module bracket materials with certain wall thickness, and the holes are connected into a whole by the materials, so that the module bracket can be positioned to place the battery cell. Because the material that forms the hole has certain wall thickness, causes to have great clearance between two adjacent electric cores, so the whole module unit volume after the assembly is great, so under the module support of same volume, the volume density that adopts the round hole to organize is lower relatively. In addition, the module bracket hole structure is relatively complex, and the dimensional accuracy and the assembly requirement are high. If the tolerance of the hole size is too large, although the cell assembly is convenient, the cell is not firmly fixed, and all the cells are possibly not on the same plane, so that the nickel strip welding effect is influenced; if the hole dimensional tolerance is too small, the battery core is difficult to assemble, and the battery core can not be inserted and cannot be welded seriously, so that the production efficiency is also influenced. Some holes are opened into a horn mouth at the front end to relieve the problem, but only play a role in early stage guiding and cannot completely solve the problem of difficult assembly. In order to solve the above problem, in this embodiment, the original round hole mounting structure is replaced with practical welding point group 5, and first electric core 1 links together with welding point group 5, during the installation, utilizes the space between the adjacent first electric core 1, sets up a plurality of cylinder bosss 51 in this space, and a plurality of cylinder bosss 51 are external on same circumference, and this circumference is the mounting hole promptly, and the mounting hole is used for the location to place first electric core 1. Therefore, a circle of wall thickness material around the module is not needed to form a hole for installation, so that space is saved, and the volume density of the module is improved. The welding point group 5 is simple in structure, small in size, easy to control in precision and low in assembly difficulty.
In the present embodiment, as shown in fig. 1, the welding tongues 4 on the bottom surface of the conductor base plate 2 are welded to the positive electrode of the second battery cell 6, and a plurality of welding tongues 4 are welded to the positive electrode of the second battery cell 6 in a one-to-one correspondence, and only one connection of the second battery cell 6 to the conductor base plate 2 is shown in the figure.
In the present embodiment, as shown in fig. 1 and fig. 2, the welding tongue piece 4 includes a spirally arranged nickel strip, and the positive electrode of the second battery cell 6 is welded to the nickel strip.
In this embodiment, as shown in fig. 1 and fig. 2, the nickel strap is a nickel strap with a thickness of 0.1-0.2 mm, one end of the nickel strap is welded and fixed on the conductor bottom plate 2, the other end of the nickel strap is spirally arranged in a spring shape, the welding tongue piece 4 further includes a positioning groove 41, and the positioning groove 41 is arranged on the bottom plate 2 at the rotation center of the nickel strap.
In the embodiment, the positioning groove 41 is a straight groove, and the straight groove is formed on the bottom plate 2 at the rotation center of the nickel strap.
In this embodiment, specifically, the second electrical core 6 is connected to the welding tongue piece 4, the welding tongue piece 4 is a nickel strap disposed in a spring shape, the nickel strap disposed in the spring shape has a certain elasticity, and the flatness of each electrode of the second electrical core 6 can be ensured by compressing the welding tongue piece 4 during welding. And the nickel strap that the spring form set up can produce the deformation of certain degree at the welding face normal direction, can be used to the absorption vibration, and the buffering second electricity core 6 vibrates with conductor bottom plate 2 between, has reduced the risk that the solder joint appears tearing, has effectively avoided the solder joint to tear electrically conductive inhomogeneous, the inhomogeneous scheduling problem that generates heat that leads to, and then has avoided local generating heat to arouse that electric core is out of order or thermal runaway's problem. Meanwhile, the welding tongue piece 4 further comprises a positioning groove 41, the positioning groove 41 is formed in the bottom plate of the rotation center of the nickel strip, and when the positioning groove is used for connecting the welding tongue piece 4 and the second battery cell 6, positioning is provided for a welding gun, so that the precision requirement of the electrode position of the second battery cell during welding is effectively reduced, and the assembly welding difficulty is reduced.
In this embodiment, it is specific, the edge of conductor bottom plate 2 is provided with a plurality of turn-ups curb plates 3, and the lateral wall of turn-ups curb plate 3 covers there is insulating material, and insulating material's turn-ups curb plate 3 can separate adjacent two sets of module supports effectively, and is insulating stable, can effectively prevent to arouse electric incident.
Example two:
the present embodiment provides another alternative for the connection structure of the first battery cell 1 and the conductor substrate 2 on the basis of the first embodiment.
In this embodiment, it is concrete, an electricity core module support with high plane degree and shock-absorbing function, install a plurality of first electric cores 1 and a plurality of second electricity core 6 on the module support, the module support includes conductor bottom plate 2, a plurality of welding tongue piece 4 and a plurality of mounting groove, conductor bottom plate 2's edge is provided with a plurality of turn-ups curb plate 3, turn-ups curb plate 3's lateral wall covers has insulating material, conductor bottom plate 2 top surface and bottom surface all evenly are provided with a plurality of welding tongue piece 4, all be provided with the mounting groove around a plurality of welding tongue piece 4, a plurality of first electric cores 1 are connected with the mounting groove one-to-one of conductor bottom plate 2 top surfaces, a plurality of second electricity cores 6 are connected with the welding tongue piece 4 one-to-one of conductor bottom plate 2 bottom surfaces.
In this embodiment, specifically, through connecting a plurality of first electric cores 1 and a plurality of second electric core 6 respectively at conductor bottom plate 2's both sides, first electric core 1 and second electric core 6 are connected with the mounting groove and the welding tongue piece 4 of conductor bottom plate 2 both sides respectively, have reduced the required part kind of electric core module equipment greatly, reduce electric core module weight to promote the energy density of electric core module, still reduce the assembly process degree of difficulty, saved the cost.
In this embodiment, specifically, the mounting groove on the top surface of the conductor bottom plate 2 is welded to the negative electrode of the first electrical core 1, and the mounting grooves are all welded to the negative electrode of the first electrical core 1 in a one-to-one correspondence manner.
In this embodiment, specifically, the welding tongue piece 4 is located the mounting groove, and when the installation, the direct joint of negative electrode of first electric core 1 is in the mounting groove, and the structure is simple, the size is little and the assembly degree of difficulty is low.
In this embodiment, specifically, the welding tongues 4 on the bottom surface of the conductor base plate 2 are welded to the positive electrode of the second electrical core 6, and the welding tongues 4 are welded to the positive electrode of the second electrical core 6 in a one-to-one correspondence, where only one connection between the second electrical core 6 and the conductor base plate 2 is shown in the figure.
In this embodiment, specifically, the welding tongue piece 4 includes a spirally arranged nickel strap, and the positive electrode of the second battery cell 6 is welded to the nickel strap.
In this embodiment, specifically, the nickel strap is 0.1 ~ 0.2mm thick nickel strap, and the one end welded fastening of nickel strap is on conductor bottom plate 2, and the other end of nickel strap is the spiral setting of spring form, and welding tongue piece 4 still includes constant head tank 41, and constant head tank 41 is seted up on the bottom plate 2 of the rotation center of nickel strap.
In the embodiment, the positioning groove 41 is a straight groove, and the straight groove is formed on the bottom plate 2 at the rotation center of the nickel strap.
In this embodiment, specifically, the second electrical core 6 is connected to the welding tongue piece 4, the welding tongue piece 4 is a nickel strap disposed in a spring shape, the nickel strap disposed in the spring shape has a certain elasticity, and the flatness of each electrode of the second electrical core 6 can be ensured by compressing the welding tongue piece 4 during welding. And the nickel strap that the spring form set up can produce the deformation of certain degree at the welding face normal direction, can be used to the absorption vibration, and the buffering second electricity core 6 vibrates with conductor bottom plate 2 between, has reduced the risk that the solder joint appears tearing, has effectively avoided the solder joint to tear electrically conductive inhomogeneous, the inhomogeneous scheduling problem that generates heat that leads to, and then has avoided local generating heat to arouse that electric core is out of order or thermal runaway's problem. Meanwhile, the welding tongue piece 4 further comprises a positioning groove 41, the positioning groove 41 is formed in the bottom plate of the rotation center of the nickel strip, and when the positioning groove is used for connecting the welding tongue piece 4 and the second battery cell 6, positioning is provided for a welding gun, so that the precision requirement of the electrode position of the second battery cell during welding is effectively reduced, and the assembly welding difficulty is reduced.
In this embodiment, it is specific, the edge of conductor bottom plate 2 is provided with a plurality of turn-ups curb plates 3, and the lateral wall of turn-ups curb plate 3 covers there is insulating material, and insulating material's turn-ups curb plate 3 can separate adjacent two sets of module supports effectively, and is insulating stable, can effectively prevent to arouse electric incident.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; 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 by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (8)
1. The utility model provides an electricity core module support with high plane degree and shock-absorbing function, install a plurality of first electric cores (1) and a plurality of second electric core (6), its characterized in that on the module support: the module support includes conductor bottom plate (2), a plurality of welding tongue piece (4) and a plurality of welding point group (5), the edge of conductor bottom plate (2) is provided with a plurality of turn-ups curb plate (3), the lateral wall of turn-ups curb plate (3) covers there is insulating material, conductor bottom plate (2) top surface and bottom surface all evenly are provided with a plurality of welding tongue piece (4), and are a plurality of all be provided with welding point group (5) around welding tongue piece (4), and are a plurality of welding point group (5) one-to-one of first electricity core (1) and conductor bottom plate (2) top surface is connected, and is a plurality of second electricity core (6) is connected with welding tongue piece (4) one-to-one of conductor bottom plate (2) bottom surface, welding tongue piece (4) are including the nickel strap that spirals the setting, second electricity core (6) are connected with the nickel strap.
2. The battery cell module support with high flatness and shock absorption function according to claim 1, wherein the welding point group (5) on the top surface of the conductor bottom plate (2) is connected with the negative electrode of the first battery cell (1).
3. The battery cell module support with high flatness and shock absorption function according to claim 2, wherein the welding tongue piece (4) on the bottom surface of the conductor bottom plate (2) is connected with the positive electrode of the second battery cell (6).
4. The battery cell module support with high flatness and a damping function according to claim 3, wherein the thickness of the nickel strap is 0.1-0.2 mm, one end of the nickel strap is welded and fixed on the conductor bottom plate (2), the other end of the nickel strap is spirally arranged in a spring shape, the welding tongue piece (4) further comprises a positioning groove (41), and the positioning groove (41) is arranged on the bottom plate (2) at the spiral center of the nickel strap.
5. The battery cell module support with high flatness and shock absorption function according to claim 4, wherein the positioning groove (41) is a straight groove, and the straight groove is formed in the bottom plate (2) of the rotation center of the nickel strap.
6. The battery cell module support with high flatness and shock absorption function according to claim 5, wherein the welding point group (5) comprises a plurality of cylindrical bosses (51), and the plurality of cylindrical bosses (51) are uniformly distributed on the same circumference around the welding tongue piece (4).
7. The cell module support with high flatness and shock absorption function according to claim 6, wherein the welding point set (5) comprises six cylindrical bosses (51), and the six cylindrical bosses (51) are uniformly distributed on the same circumference around the welding tongue piece (4).
8. The battery cell module support with high flatness and a shock absorption function according to claim 7, wherein a plurality of the cylindrical bosses (51) circumscribe the same circumference, the circumscribe circumferences of the plurality of the cylindrical bosses (51) form mounting holes, and the negative electrode of the first battery cell (1) is mounted in the mounting holes.
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| Publication number | Publication date |
|---|---|
| CN114050368B (en) | 2024-08-20 |
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