CN212625807U - Battery cover plate assembly for vehicle, battery pack and vehicle - Google Patents
Battery cover plate assembly for vehicle, battery pack and vehicle Download PDFInfo
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- CN212625807U CN212625807U CN202021556505.3U CN202021556505U CN212625807U CN 212625807 U CN212625807 U CN 212625807U CN 202021556505 U CN202021556505 U CN 202021556505U CN 212625807 U CN212625807 U CN 212625807U
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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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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The application discloses a battery cover plate assembly, battery package and vehicle for vehicle, battery cover plate assembly includes: the riveting metal plate is provided with a first hole section and a second hole section, the first hole section is arranged on the upper side of the second hole section, and the inner diameter of the first hole section is larger than that of the second hole section; utmost point post, utmost point post includes: the first matching section is matched with the first hole section, the second matching section is matched with the second hole section, and the outer diameter of the first matching section is larger than that of the second matching section; wherein at least a portion between the first bore section and the first mating section is spaced apart to form a weld recess. According to the battery cover plate assembly, the welding groove is formed between the first hole section and the first matching section, so that the utilization rate of laser can be improved, and the welding stability between parts in the battery cover plate assembly is improved; meanwhile, the safety performance of the battery pack is ensured after the welding power of the process is reduced, and the material cost of the insulating plastic part is saved.
Description
Technical Field
The application relates to the technical field of vehicles, in particular to a battery cover plate assembly for a vehicle, a battery pack and the vehicle.
Background
The battery pack is used as a storage unit of a common power battery and mainly comprises a cover plate, an aluminum shell and a pole group. In order to increase the energy density of the battery pack, the height of the battery cover plate assembly can be reduced, so that the requirement on welding penetration is increased. In order to ensure the welding stability of the battery cover plate assembly, the welding power of the process needs to be reduced, otherwise, the temperature rise is too large, so that the insulating plastic part is burnt and melted, and the safety performance of the battery pack is influenced.
SUMMERY OF THE UTILITY MODEL
The present application is directed to solving at least one of the problems in the prior art.
Therefore, a first objective of the present application is to provide a battery cover plate assembly for a vehicle, which can improve the utilization rate of laser and reduce welding power;
a second objective of the present application is to provide a battery pack, which includes the above-mentioned battery cover plate assembly;
a third objective of the present application is to provide a battery pack, including the above battery pack.
In order to achieve the above object, a first aspect of the present application provides a battery cover plate assembly for a vehicle, comprising: the riveting metal plate is provided with a first hole section and a second hole section, the first hole section is arranged on the upper side of the second hole section, and the inner diameter of the first hole section is larger than that of the second hole section; a post, the post comprising: the first matching section is matched with the first hole section, the second matching section is matched with the second hole section, and the outer diameter of the first matching section is larger than that of the second matching section; wherein at least a portion between the first bore section and the first mating section is spaced apart to form a weld recess.
According to the battery cover plate assembly, the welding groove is formed between the first hole section and the first matching section, so that the utilization rate of laser can be improved, the welding power of a process is reduced, and the welding stability between parts in the battery cover plate assembly is improved; meanwhile, the safety performance of the battery pack is ensured after the welding power of the process is reduced, the temperature resistance of the insulating plastic part is not required to be increased, and the cost of raw materials is saved.
Further, at least one of an inner side surface of the first bore section and an outer side surface of the first mating section are radially distant from each other to form the welding groove.
Further, the inner side surface of the first hole section extends outward in the radial direction to form a first welding groove, the outer side surface of the first fitting section extends inward in the radial direction to form a second welding groove, and the first welding groove and the second welding groove are communicated with each other to form the welding groove.
Further, the first welding groove is formed in the upper side portion of the first hole section, the second welding groove is formed in the upper side portion of the first matching section, and the first welding groove and the second welding groove are opposite to each other.
Further, the peripheral face of the first welding groove is gradually far away from the central line of the pole in the direction from bottom to top, and the peripheral face of the second welding groove is gradually close to the central line of the pole in the direction from bottom to top.
Further, the first hole segment has a height of L1, the second hole segment has a height of L2, and the L1 and the L2 satisfy: l2 is not less than L1 is not less than 1.3 × L2.
Further, the height of the welding groove is H, and the height between H and L1 satisfies: h is less than or equal to 0.66L 1.
Furthermore, a sinking groove is further formed in the upper side face of the riveting metal plate, and the first hole section is arranged on the bottom wall face of the sinking groove; the thickness of the riveting metal plate is L, and L satisfies: l is more than or equal to 2.5 mm.
The second aspect of the present application provides a battery pack, comprising the battery cover plate assembly.
The third aspect of the application provides a vehicle, which comprises the battery pack.
Additional aspects and advantages of the present application 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 present application.
Drawings
The above and/or additional aspects and advantages of the present application 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 perspective view of a riveted metal plate according to an embodiment of the present application;
FIG. 2 is a top view of a riveted metal plate according to an embodiment of the application;
FIG. 3 is a cross-sectional view of a riveted metal plate according to an embodiment of the application;
fig. 4 is a schematic perspective view of a pole according to an embodiment of the present application;
fig. 5 is a top view of a post according to an embodiment of the present application;
FIG. 6 is a cross-sectional view of a pole post according to an embodiment of the present application;
fig. 7 is a schematic view of the fit of the riveted metal plate and the pole according to the embodiment of the application.
Reference numerals:
the metal plate 100 is riveted to the metal plate,
a first hole section 101, a second hole section 102, a first welding groove 103, a sink 104,
the pole column 200 is provided with a plurality of poles,
a first fitting section 201, a second fitting section 202, and a second welding groove 203.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar 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 application and are not to be construed as limiting the present application.
A battery cover plate assembly for a vehicle according to an embodiment of the present application is described below with reference to fig. 1 to 7, including: the metal plate 100 and the pole 200 are riveted.
Specifically, the riveting metal plate 100 is provided with a first hole section 101 and a second hole section 102, the first hole section 101 is arranged on the upper side of the second hole section 102, and the inner diameter of the first hole section 101 is larger than that of the second hole section 102; the pole 200 includes: the first matching section 201 is matched with the first hole section 101, the second matching section 202 is matched with the second hole section 102, and the outer diameter of the first matching section 201 is larger than that of the second matching section 202; wherein at least a portion between the first bore section 101 and the first mating section 201 is spaced apart to form a weld groove.
In order to improve the energy density of the battery pack, the thickness of the battery cover plate assembly can be reduced, the thickness of a riveting aluminum block in the battery cover plate assembly can be reduced, the welding penetration requirement can be improved, the welding power of the process welding needs to be reduced in order to ensure the welding stability of the battery cover plate assembly, and otherwise, the temperature rise of a welding seam with overlarge power is overlarge. In the prior art, when laser welding is utilized, laser is directly reflected out after contacting a contact surface, and the laser absorption area on the contact surface is smaller due to the fact that only one contact point is formed on the contact surface, and the absorption efficiency of the contact surface to the laser is not high, so that welding can be completed with high welding power. Therefore, the temperature rise of the welding line is large, the requirement on the temperature resistance of the insulating plastic part is high, the cost of raw materials is increased, and the insulating plastic part can be possibly burnt and melted to influence the safety performance of the battery pack; meanwhile, the welding penetration is unstable due to the overlarge power, and the welding stability is poor.
In order to solve the problem, this application sets up the welding recess through the cooperation that changes riveting metal sheet 100 and utmost point post 200 between first hole section 101 and first cooperation section 201, and after the welding recess was jeted into to laser, can reflect repeatedly on the welding recess, increased the area of absorption of contact surface to the laser beam, improved the absorptivity to laser. Therefore, the power utilization rate of laser is improved, and the welding power can be reduced, so that the welding stability of the riveting metal plate 100 and the pole 200 is ensured.
The battery cover plate assembly is applicable to various battery models, is strong in application type, and can adjust the shape of a welding groove between the first hole section 101 of the riveting metal plate 100 and the first matching section 201 of the pole 200 according to different requirements so as to achieve the optimal laser power utilization rate.
According to the battery cover plate assembly, the utilization rate of laser can be improved by welding the groove, so that the welding power of the process is reduced, and the welding stability among parts in the battery cover plate assembly is improved; meanwhile, the safety performance of the battery pack is ensured after the welding power of the process is reduced, the temperature resistance of the insulating plastic part is not required to be increased, and the cost of raw materials is saved.
According to an embodiment of the application, at least one of the inner side face of the first bore section 101 and the outer side face of the first mating section 201 are radially distanced towards each other to form a welding groove. The method for forming the welding groove can be realized by only forming the welding groove on the inner side surface of the first hole section 101 without changing the first matching section 201; the first hole section 101 can be realized by only arranging a welding groove on the outer side surface of the first matching section 201 without changing; it is also possible to provide the first hole section 101 and the first fitting section 201 with welding grooves on their inner side and outer side.
According to an embodiment of the present application, the inner side surface of the first bore section 101 extends radially outward to form a first welding groove 103, the outer side surface of the first fitting section 201 extends radially inward to form a second welding groove 203, and the first welding groove 103 and the second welding groove 203 communicate with each other to form a welding groove. The laser beam is repeatedly reflected in the space where the first welding groove 103 and the second welding groove 203 are communicated, the absorption area of the inner side surface of the first hole section 101 and the outer side surface of the first matching section 201 facing the laser beam is increased, and the absorption rate of the laser beam is improved. Therefore, the power utilization rate of laser is improved, and the welding power can be reduced, so that the welding stability of the riveting metal plate 100 and the pole 200 is ensured.
According to an embodiment of the present application, the first welding groove 103 is provided at an upper side portion of the first hole section 101, the second welding groove 203 is provided at an upper side portion of the first fitting section 201, and the first welding groove 103 and the second welding groove 203 are directly opposite to each other. The central line of the pole 200 is gradually kept away from the circumferential surface of the first welding groove 103 in the direction from bottom to top, and the central line of the pole 200 is gradually close to the circumferential surface of the second welding groove 203 in the direction from bottom to top. First welding recess 103 forms a welding recess wide from top to bottom with second welding recess 203 in this application, improves the power utilization of laser, certainly, can adjust the welding recess shape between first hole section 101 of riveting metal sheet 100 and the first cooperation section 201 of utmost point post 200 according to different demands to reach optimum laser power utilization.
In one embodiment according to the present application, the first bore section 101 has a height of L1, the second bore section 102 has a height of L2, and L1 and L2 satisfy: l2 is not less than L1 is not less than 1.3 × L2. The height of the welding groove is H, and the height between H and L1 satisfies: h is less than or equal to 0.66L 1. In order to ensure the welding strength, a welding groove with the height of H is formed in the height L1 of the first hole section 101, the welding strength is related to the laser power, the welding area and other factors, the height H of the welding groove is ensured, which is equivalent to the range of the welding area, and the stability of the riveted metal plate 100 and the pole 200 can be improved after welding, so that the riveted metal plate and the pole are not easy to separate.
According to an embodiment of the present application, the riveting metal plate 100 is further provided with a sinking groove 104 on an upper side surface thereof, and the first hole section 101 is provided on a bottom wall surface of the sinking groove 104; the thickness of riveting metal sheet 100 is L, and L satisfies: l is more than or equal to 2.5 mm. Because the energy density of the battery pack is improved, the thickness of a riveting aluminum block in the battery cover plate assembly is reduced, the pole 200 sequentially penetrates through the insulating plastic part and the riveting metal plate 100, the pole is fixed in a riveting mode and then is welded with the riveting metal plate 100, and in order to ensure the stress strength of the riveting metal plate 100 after welding, the thickness L of the pole needs to be more than or equal to 2.5 mm.
The battery pack according to the embodiment of the present application includes the above-mentioned battery cover plate assembly. The battery cover plate assembly can be suitable for various battery pack models according to different requirements, the energy density of the battery pack is increased due to the fact that the thickness of the riveting metal plate 100 is reduced, and the welding stability is improved to guarantee the safety performance of the battery pack.
According to the embodiment of the application, the vehicle comprises the battery pack. Because the energy density of the battery pack becomes high, the vehicle can run for a longer distance, the safety performance of the battery pack is high, the benefit and the safety of consumers can be guaranteed, and the vehicle has higher market competitiveness.
In the description of the present application, it is to be understood that the terms "thickness," "upper," "lower," "inner," "outer," "peripheral," "radial," "center," and the like, as used herein, refer to an orientation or positional relationship illustrated in the drawings, which are used for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present application.
In the description of the present application, "the first feature" and "the second feature" may include one or more of the features.
In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means 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 application. 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 application 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 application, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A battery cover plate assembly for a vehicle, comprising:
the riveting metal plate is provided with a first hole section and a second hole section, the first hole section is arranged on the upper side of the second hole section, and the inner diameter of the first hole section is larger than that of the second hole section;
a post, the post comprising: the first matching section is matched with the first hole section, the second matching section is matched with the second hole section, and the outer diameter of the first matching section is larger than that of the second matching section; wherein
At least a portion between the first bore section and the first mating section is spaced apart to form a weld recess.
2. The battery cover plate assembly for a vehicle according to claim 1, wherein at least one of the inner side surface of the first hole section and the outer side surface of the first fitting section is radially away from each other to form the welding groove.
3. The battery cover plate assembly for a vehicle according to claim 2, wherein an inner side surface of the first hole section extends outward in a radial direction to form a first welding groove, an outer side surface of the first fitting section extends inward in a radial direction to form a second welding groove, and the first welding groove and the second welding groove communicate with each other to form the welding groove.
4. The battery cover plate assembly for a vehicle according to claim 3, wherein the first welding recess is provided at an upper side portion of the first hole section, the second welding recess is provided at an upper side portion of the first fitting section, and the first welding recess and the second welding recess are opposed to each other.
5. The battery cover plate assembly for the vehicle according to claim 4, wherein the circumferential surface of the first welding groove is gradually distant from the center line of the pole in a direction from bottom to top, and the circumferential surface of the second welding groove is gradually close to the center line of the pole in a direction from bottom to top.
6. The battery cover plate assembly for a vehicle of claim 1, wherein the first aperture section has a height of L1, the second aperture section has a height of L2, the L1 and the L2 satisfy: l2 is not less than L1 is not less than 1.3 × L2.
7. The battery cover plate assembly for a vehicle according to claim 6, wherein the height of the welding groove is H, and the height between H and L1 satisfies: h is less than or equal to 0.66L 1.
8. The battery cover plate assembly for the vehicle according to claim 1, wherein a sunken groove is further provided on an upper side surface of the rivet metal plate, and the first hole section is provided on a bottom wall surface of the sunken groove;
the thickness of the riveting metal plate is L, and L satisfies: l is more than or equal to 2.5 mm.
9. A battery pack comprising the battery cover plate assembly of any one of claims 1-8.
10. A vehicle comprising the battery pack of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021556505.3U CN212625807U (en) | 2020-07-30 | 2020-07-30 | Battery cover plate assembly for vehicle, battery pack and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021556505.3U CN212625807U (en) | 2020-07-30 | 2020-07-30 | Battery cover plate assembly for vehicle, battery pack and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN212625807U true CN212625807U (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021556505.3U Active CN212625807U (en) | 2020-07-30 | 2020-07-30 | Battery cover plate assembly for vehicle, battery pack and vehicle |
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| CN (1) | CN212625807U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024045458A1 (en) * | 2022-08-29 | 2024-03-07 | 厦门海辰储能科技股份有限公司 | Top cover assembly, battery, and electric device |
-
2020
- 2020-07-30 CN CN202021556505.3U patent/CN212625807U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024045458A1 (en) * | 2022-08-29 | 2024-03-07 | 厦门海辰储能科技股份有限公司 | Top cover assembly, battery, and electric device |
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