CN214254671U - Battery cell pole component and battery cell assembly - Google Patents
Battery cell pole component and battery cell assembly Download PDFInfo
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- CN214254671U CN214254671U CN202120276755.XU CN202120276755U CN214254671U CN 214254671 U CN214254671 U CN 214254671U CN 202120276755 U CN202120276755 U CN 202120276755U CN 214254671 U CN214254671 U CN 214254671U
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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 discloses an electric core utmost point post subassembly and electric core assembly, electric core utmost point post subassembly includes: the battery cell cover plate is provided with a convex pole column and a connecting sheet, the connecting sheet is arranged on the battery cell cover plate, and the connecting sheet is provided with a connecting hole which is in sleeve fit with the pole column; wherein, the welding recess is injectd with the periphery wall of utmost point post to the internal perisporium of connecting hole, the welding recess structure is for keeping away from the orientation of electric core apron is opened. The utility model discloses electric core utmost point post subassembly connects the connecting plate to utmost point post department to inject the welding recess between the internal perisporium of connecting hole and the periphery wall of utmost point post, shine laser to welding recess in order to weld the connection piece in electric core apron department, through setting up the welding recess, increased the absorption area to the laser beam, improved the absorption rate of laser, thereby improved the power utilization of laser and rateed, reduced the required power of welding, guaranteed the welding stability between the apron subassembly.
Description
Technical Field
The utility model belongs to the technical field of the battery manufacturing technique and specifically relates to a battery core utmost point post subassembly and have electric core assembly of this battery core utmost point post subassembly is related to.
Background
In the field of automobiles, new energy electric automobiles are developed for a great trend. The core power source of the electric automobile is a power battery, so the performance of the power battery is particularly important. The battery core is used as a storage unit of a common power battery and mainly comprises a cover plate, an aluminum shell and a connecting sheet, wherein the cover plate and the connecting sheet are connected in a welded mode. Among the prior art, the absorbing area of the face of weld department laser of apron and connection piece is less, and the face of weld is to the absorbing efficiency of laser low, and required laser welding power is higher relatively, leads to welded penetration unstable, and welded poor stability, welding cost is high, has the space of improvement.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide an electricity core utmost point post subassembly to improve the power utilization of laser, reduce welding power, and promote the welding stability between the apron subassembly.
According to the utility model discloses electric core utmost point post subassembly, include: the battery cell cover plate is provided with a convex pole column and a connecting sheet, the connecting sheet is arranged on the battery cell cover plate, and the connecting sheet is provided with a connecting hole which is in sleeve fit with the pole column; wherein, the welding recess is injectd with the periphery wall of utmost point post to the internal perisporium of connecting hole, the welding recess structure is for keeping away from the orientation of electric core apron is opened.
According to the utility model discloses electric core utmost point post subassembly connects the connecting plate to utmost point post department to inject the welding recess between the internal perisporium of connecting hole and the periphery wall of utmost point post, shine laser to welding recess in order to weld the connecting plate in electric core apron department, through setting up the welding recess, increased the area of absorption to the laser beam, improved the absorptivity of laser, thereby improved the power utilization of laser and rateed, reduced the required power of welding, guaranteed the welding stability between the apron subassembly.
According to the utility model discloses electric core utmost point post subassembly, the opening width structure of welding recess is towards keeping away from electric core cover plate's direction crescent.
According to the utility model discloses electric core utmost point post subassembly, the welding recess structure is for encircleing the ring channel that utmost point post set up.
According to the utility model discloses electric core utmost point post subassembly, the welding recess structure is for having trapezoidal cross section.
According to the utility model discloses electric core utmost point post subassembly, the internal perisporium of connecting hole is equipped with along the first face of weld of radial outside sunken, the periphery wall of utmost point post is equipped with along the radial inside sunken second face of weld, first face of weld with the second face of weld is injectd welding groove.
According to the cell pole assembly of the embodiment of the present invention, the first welding surface includes a first reflection surface and a first connection surface connected to each other, the first connection surface extends along a radial direction of the connection hole, and the first reflection surface extends along an axial direction of the connection hole in an inclined manner; the second welding surface comprises a second reflecting surface and a second connecting surface which are connected, the second connecting surface extends along the radial direction of the pole, and the second reflecting surface extends along the axial direction of the pole in an inclined manner; the radial inner end of the first connecting surface is connected with the radial outer end of the second connecting surface, and the first reflecting surface and the second reflecting surface are oppositely arranged at intervals in the radial direction of the pole.
According to the utility model discloses electric core utmost point post subassembly, the radial extension size of first connection face is greater than the second is connected the radial extension size of face.
According to the utility model discloses electric core utmost point post subassembly, first plane of reflection forms welding groove's outer peripheral wall, the second plane of reflection forms welding groove's inner peripheral wall, just first plane of reflection with the second plane of reflection all constructs for multilateral face.
According to the battery cell pole column assembly provided by the embodiment of the utility model, the inner peripheral wall of the connecting hole is provided with a first welding surface which is radially and outwards sunken, and the welding groove is defined by the first welding surface and the outer peripheral wall of the pole column; or the peripheral wall of the pole is provided with a second welding surface which is inwards sunken along the radial direction, and the second welding surface and the inner peripheral wall of the connecting hole define the welding groove.
The utility model also provides an electricity core assembly.
According to the utility model discloses electric core assembly, including electric core casing, utmost point group and the electric core utmost point post subassembly of any kind of above-mentioned embodiment.
The advantages of the cell assembly and the cell pole column assembly are the same as those of the prior art, and are not described herein again.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a cell cover plate in a cell post assembly according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a connecting sheet in a cell post assembly according to an embodiment of the present invention;
fig. 3 is an assembly diagram of a connecting sheet and a cell cover plate in a cell post assembly according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view taken at A-A of FIG. 3;
fig. 5 is a partially enlarged view at B in fig. 4.
Reference numerals:
the cell terminal post assembly 100 is provided with a terminal post,
the cell cover plate 1, the pole 11, the second welding surface 12, the second reflecting surface 121, the second connecting surface 122,
a connecting sheet 2, a connecting hole 21, a first soldering surface 22, a first reflecting surface 221, a first connecting surface 222,
the groove 3 is welded.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
A cell post assembly 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 5.
As shown in fig. 3, according to the utility model discloses cell utmost point post subassembly 100, include: cell apron 1 and connection piece 2.
It should be noted that, the battery cell pole assembly 100 is installed in the upper end of the pole group, the manufacturing material of the connecting sheet 2 is made of a conductive material, the connecting sheet 2 is installed below the battery cell cover plate 1 by laser welding, and the battery cell cover plate 1 and the pole group are conducted through the connecting sheet 2, so that the battery cell can supply power to the outside.
The battery core cover plate 1 is provided with a convex pole 11, wherein, as shown in fig. 1, the battery core cover plate 1 is structured into a rectangular sheet structure, the areas of the battery core cover plate 1 close to the two ends are respectively provided with a downward open U-shaped groove, the U-shaped grooves on the two sides are suitable for being sleeved on the upper end of the pole group, so as to install the battery core cover plate 1 on the pole group, the lower side of the battery core cover plate 1 is provided with a downward extended convex pole 11, so as to be used for positioning the connecting sheet 2 on one side of the battery core cover plate 1 toward the.
Wherein, the inner peripheral wall of the connecting hole 21 and the outer peripheral wall of the pole 11 define a welding groove 3, and the welding groove 3 is configured to be open toward a direction away from the cell cover plate 1. That is, as shown in fig. 4, after the connecting plate 2 is sleeved on the post 11, the inner peripheral wall of the connecting hole 21 and the outer peripheral wall of the post 11 are matched to define a welding groove 3 which is open towards the direction away from the cell cover plate 1, so that laser can be irradiated into the welding groove 3 from the open end of the welding groove 3 to weld the connecting plate on the cell cover plate 1 from the position of the welding groove 3.
It can be understood that, cup joint behind utmost point post 11 when connection piece 2, connection piece 2 prescribes a limit to the open welding groove 3 of orientation towards keeping away from electric core cover plate 1 with utmost point post 11, and laser shines to welding groove 3 in with certain angle, and laser carries out multiple reflection in welding groove 3's inner wall department, constructs a plurality of solder joints to the area of welding point has been increased, the welding efficiency of laser has been improved, welding set's power has been reduced, thereby the cost is reduced.
The utility model discloses electric core utmost point post subassembly 100, cup joint connection piece 2 to utmost point post 11 department, and inject welding groove 3 between the internal perisporium of connecting hole 21 and utmost point post 11's periphery wall, shine laser to welding groove 3 in order to weld connection piece 2 in electric core cover plate 1 department, through setting up welding groove 3, the absorption area to the laser beam has been increased, the absorption rate of laser is improved, thereby the power utilization of laser is improved, the required power of welding is reduced, the welding stability between the apron subassembly has been guaranteed.
In some embodiments, as shown in fig. 5, the opening width of the welding groove 3 is configured to gradually increase towards a direction away from the cell cover plate 1, so that laser is easily irradiated into the welding groove 3, and melt required for completing welding between the connection piece 2 and the cell cover plate 1 is reduced, thereby reducing welding time and power requirements, reducing stress problems caused by welding, and improving welding quality between the connection piece 2 and the cell cover plate 1.
In some embodiments, the welding groove 3 is configured as an annular groove arranged around the terminal 11, that is, the welding spot is arranged around the terminal 11, the welding spot is irradiated into the annular groove by laser to weld the connecting sheet 2 around the terminal 11, and the welding spot is uniformly distributed, when the connecting sheet 2 moves relative to the cell cover plate 1, the annular welding spot acts together, the problem that the connecting part is damaged due to the fact that the stress of the welding spot at a single position is too large is avoided, and the installation stability of the connecting sheet 2 is improved.
In some embodiments, as shown in fig. 5, the welding groove 3 is configured to have a trapezoidal cross section, that is, the laser irradiates the welding groove 3 at a certain angle, and is suitable for reflecting between two sides of the trapezoid, so as to configure a plurality of welding spots for welding at a plurality of positions of the welding groove 3 simultaneously, thereby improving the utilization rate and welding efficiency of the laser, reducing the power requirement of the laser irradiation device, reducing the internal stress of the welding spots, and improving the welding effect.
In some embodiments, the inner circumferential wall of the connection hole 21 is provided with a first welding surface 22 recessed radially outward, the outer circumferential wall of the pole 11 is provided with a second welding surface 12 recessed radially inward, and the first welding surface 22 and the second welding surface 12 define the welding groove 3. Wherein, as shown in fig. 4, construct first face of weld 22 at the downside of the internal perisporium of connecting hole 21, and the periphery wall structure of utmost point post 11 has second face of weld 12, through cup jointing connection piece 2 at utmost point post 11, and connecting hole 21 is equipped with one side of first face of weld 22 and keeps away from electric core cover plate 1, so that first face of weld 22 and second face of weld 12 are just to the cooperation, thereby construct welding groove 3, thereby at connection piece 2 and 1 integrative back of electric core cover plate installation position, operating personnel can install one side of connection piece 2 at electric core cover plate 1 and weld welding groove 3 and carry out welding operation, in order to do benefit to the welding that realizes connection piece 2 and electric core cover plate 1.
In some embodiments, as shown in fig. 5, the first welding surface 22 includes a first reflection surface 221 and a first connection surface 222 connected to each other, the first connection surface 222 extends along a radial direction of the connection hole 21, the first reflection surface 221 extends obliquely along an axial direction of the connection hole 21, the second welding surface 12 includes a second reflection surface 121 and a second connection surface 122 connected to each other, the second connection surface 122 extends along a radial direction of the pole 11, the second reflection surface 121 extends obliquely along the axial direction of the pole 11, wherein a radially inner end of the first connection surface 222 is connected to a radially outer end of the second connection surface 122, and the first reflection surface 221 and the second reflection surface 121 are disposed in a spaced-apart and opposite manner in the radial direction of the pole 11.
As shown in fig. 5, the upper side of the first reflection surface 221 is connected to the radially outer side of the first connection surface 222, and the upper side of the second reflection surface 121 is connected to the radially inner side of the second connection surface 122, when the connection piece 2 is connected to the cell cover plate 1, the first connection surface 222 and the second connection surface 122 are flush, the radially inner end of the first connection surface 222 is connected to the radially outer end of the second connection surface 122, and the first reflection surface 221 and the second reflection surface 121 are arranged to extend in a direction away from each other in the radial direction, so as to form the trapezoidal welding groove 3.
It can be understood that, after the laser is irradiated onto the first reflection surface 221 or the second reflection surface 121 at a certain angle, the laser can be reflected between the first reflection surface 221 and the second reflection surface 121 toward the first connection surface 222, so that a plurality of welding spots are uniformly configured in the welding groove 3, thereby improving the utilization rate and the welding efficiency of the laser, reducing the power requirement of the laser irradiation device, reducing the internal stress of the welding spots, and improving the welding effect.
In some embodiments, as shown in fig. 5, a radial extension of the first connection surface 222 is greater than a radial extension of the second connection surface 122, that is, an area of the first connection surface 222 is greater than an area of the second connection surface 122, so that an area of the first welding surface 22 is greater than an area of the second welding surface 12, that is, a welding area of the connection surface is greater than a welding area of the terminal 11, so that the terminal 11 is relatively less affected during the welding process, and the connection piece 2 is suitable for moving slightly during the welding process, so as to reduce an internal stress problem caused by the welding, thereby improving an overall welding quality of the connection piece 2 and the cell cover plate 1. Meanwhile, the width occupied by the welding groove 3 on the connecting piece 2 is smaller than the width occupied on the pole 11, the radial size of the pole 11 is ensured to be large enough to ensure the structural strength of the pole 11, the area of the welding surface on the connecting piece 2 is increased, and the welding stability of the connecting piece 2 and the pole 11 is ensured.
In some embodiments, the first reflection surface 221 is formed as an outer circumferential wall surface of the welding groove 3, the second reflection surface 121 is formed as an inner circumferential wall surface of the welding groove 3, and both the first reflection surface 221 and the second reflection surface 121 are configured as polygonal surfaces. It should be noted that the first reflecting surface 221 and the second reflecting surface 121 are configured to have polygonal surfaces with the same number of equal sides, and the polygon of the first reflecting surface 221 is suitable for being matched with the polygon of the second reflecting surface 121 one by one, so that the connecting piece 2 can be matched and mounted to the pole 11, thereby completing accurate positioning, and simultaneously ensuring that the welding groove 3 always maintains a constant width, so as to greatly improve the welding quality.
In some embodiments, the inner circumferential wall of the connection hole 21 is provided with a first welding surface 22 recessed radially outward, and the first welding surface 22 defines the welding groove 3 with the outer circumferential wall of the pole 11. That is to say, after connection piece 2 cup jointed to utmost point post 11's periphery wall, through the direct cooperation with utmost point post 11's periphery wall of first face of weld 22 to inject welding groove 3, make utmost point post 11 periphery wall need not process, thereby reduced the step of course of working, and reduced connection piece 2 and utmost point post 11's cooperation required precision, improved welding quality greatly.
Or the outer peripheral wall of the pole 11 is provided with a second welding surface 12 which is recessed inwards in the radial direction, and the second welding surface 12 and the inner peripheral wall of the connecting hole 21 define a welding groove 3. That is to say, after connection piece 2 cup jointed to utmost point post 11's periphery wall, through the direct internal perisporium cooperation with connecting hole 21 of second face of weld 12 to inject welding groove 3, make connecting hole 21's internal perisporium not need to process, thereby reduced the step of course of working, and reduced connection piece 2 and utmost point post 11's cooperation required precision, improved welding quality greatly.
The utility model also provides an electricity core assembly.
According to the utility model discloses electric core assembly, including electric core casing, utmost point group and the electric core utmost point post subassembly 100 of any above-mentioned embodiment. The lower extreme of utmost point group is installed in electric core shell to protect electric core to avoid external injury, improve the stability of electric core, electric core utmost point post subassembly 100 is installed in the upper end of utmost point group, and electric core apron 1 switches on through connection piece 2 with utmost point group, makes electric core can supply power to the external world. Wherein, through cup jointing connection piece 2 to utmost point post 11 department, and inject welding recess 3 between the internal perisporium of connecting hole 21 and the periphery wall of utmost point post 11, shine laser to welding recess 3 in order to weld connection piece 2 in electric core apron 1 department, through setting up welding recess 3, the absorption area to the laser beam has been increased, the absorptivity of laser has been improved, thereby the power utilization ratio of laser has been improved, the required power of welding has been reduced, the welding stability between the apron subassembly has been guaranteed, thereby the overall quality of electric core assembly has been improved, the power supply stability of vehicle has been guaranteed.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.
In the description of the present invention, "a plurality" means two or more.
In the description of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.
In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A cell post assembly (100), comprising:
a battery cell cover plate (1), wherein the battery cell cover plate (1) is provided with a convex pole column (11),
the connecting sheet (2) is mounted on the battery cell cover plate (1), and the connecting sheet (2) is provided with a connecting hole (21) which is in sleeve fit with the pole column (11); wherein the content of the first and second substances,
the inner peripheral wall of the connecting hole (21) and the outer peripheral wall of the pole (11) define a welding groove (3), and the welding groove (3) is configured to be open towards a direction away from the cell cover plate (1).
2. The cell pole assembly (100) according to claim 1, wherein the opening width of the welding groove (3) is configured to gradually increase in a direction away from the cell cover plate (1).
3. The cell pole assembly (100) according to claim 2, characterized in that the welding recess (3) is configured as an annular groove arranged around the pole (11).
4. The cell pole assembly (100) of claim 2, wherein the welding groove (3) is configured with a trapezoidal cross section.
5. The cell pole assembly (100) according to any one of claims 1 to 4, wherein the inner circumferential wall of the connection hole (21) is provided with a first welding surface (22) recessed radially outwards, the outer circumferential wall of the pole (11) is provided with a second welding surface (12) recessed radially inwards, and the first welding surface (22) and the second welding surface (12) define the welding groove (3).
6. The cell post assembly (100) of claim 5,
the first welding surface (22) comprises a first reflection surface (221) and a first connection surface (222) which are connected, the first connection surface (222) extends along the radial direction of the connection hole (21), and the first reflection surface (221) extends obliquely along the axial direction of the connection hole (21);
the second welding surface (12) comprises a second reflecting surface (121) and a second connecting surface (122) which are connected, the second connecting surface (122) extends along the radial direction of the pole (11), and the second reflecting surface (121) extends obliquely along the axial direction of the pole (11); wherein
The radial inner end of the first connecting surface (222) is connected with the radial outer end of the second connecting surface (122), and the first reflecting surface (221) and the second reflecting surface (121) are oppositely arranged at intervals in the radial direction of the pole (11).
7. The cell pole assembly (100) of claim 6, wherein a radial extension of the first connection face (222) is greater than a radial extension of the second connection face (122).
8. The cell pole assembly (100) according to claim 6, wherein the first reflection surface (221) is formed as an outer peripheral wall surface of the welding groove (3), the second reflection surface (121) is formed as an inner peripheral wall surface of the welding groove (3), and the first reflection surface (221) and the second reflection surface (121) are each configured as a polygonal surface.
9. The cell pole assembly (100) of any one of claims 1 to 4,
the inner peripheral wall of the connecting hole (21) is provided with a first welding surface (22) which is recessed outwards in the radial direction, and the first welding surface (22) and the outer peripheral wall of the pole (11) define the welding groove (3);
or the peripheral wall of the pole (11) is provided with a second welding surface (12) which is inwards sunken along the radial direction, and the welding groove (3) is defined by the second welding surface (12) and the inner peripheral wall of the connecting hole (21).
10. A battery cell assembly, comprising a cell casing, a pole set and a cell post assembly (100) according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120276755.XU CN214254671U (en) | 2021-01-29 | 2021-01-29 | Battery cell pole component and battery cell assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120276755.XU CN214254671U (en) | 2021-01-29 | 2021-01-29 | Battery cell pole component and battery cell assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214254671U true CN214254671U (en) | 2021-09-21 |
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ID=77795449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120276755.XU Active CN214254671U (en) | 2021-01-29 | 2021-01-29 | Battery cell pole component and battery cell assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214254671U (en) |
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2021
- 2021-01-29 CN CN202120276755.XU patent/CN214254671U/en active Active
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Address after: No.8899 Xincheng Avenue, Jintan District, Changzhou City, Jiangsu Province Patentee after: SVOLT Energy Technology Co.,Ltd. Address before: No.8899 Xincheng Avenue, Jintan District, Changzhou City, Jiangsu Province Patentee before: SVOLT Energy Technology Co.,Ltd. |
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