CN216389566U - Battery pack lower box body, battery pack with same and automobile - Google Patents
Battery pack lower box body, battery pack with same and automobile Download PDFInfo
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- CN216389566U CN216389566U CN202121851152.4U CN202121851152U CN216389566U CN 216389566 U CN216389566 U CN 216389566U CN 202121851152 U CN202121851152 U CN 202121851152U CN 216389566 U CN216389566 U CN 216389566U
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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
Abstract
The embodiment of the application provides box under battery package and have its battery package and car belongs to car technical field. The box body comprises a lower box body bottom plate, a lower box body frame, a reinforcing beam and a reinforcing piece; the two ends of the reinforcing beam are fixedly connected with the box body frame through the reinforcing parts respectively so as to increase the connection rigidity of the reinforcing beam and the box body frame, each reinforcing part comprises two reinforcing parts, and the two reinforcing parts are arranged oppositely and form a first groove; wherein the first groove is adapted to the reinforcement beam. Use box under battery package that this application provided increases the reinforcement through the junction site at stiffening beam and lower box frame to promote the local rigidity and the intensity at the junction site of stiffening beam and lower box frame, reduced stiffening beam and box frame and taken place the risk of ftractureing, promoted the security performance and the reliability of battery package, solved the problem that the joint strength between box stiffening beam and the box frame is low under the battery package.
Description
Technical Field
The embodiment of the application relates to the technical field of automobiles, in particular to a battery pack lower box body, a battery pack with the same and an automobile.
Background
With the rapid development of new energy automobiles, the number of new energy automobiles in China is continuously increased, and the safety performance of the new energy automobiles is concerned, especially the safety performance of battery packs.
The battery pack lower box body of the existing vehicle type is welded with the box body frame directly through the stiffening beam, a welding line formed between the stiffening beam and the box body frame becomes a main stress part of the stiffening beam and the box body frame, and the welding line is easy to fail and break when a vehicle bumps over for a long time or collides violently, so that the safety risk of the battery pack is increased. Therefore, the problem that the connection strength between the box body reinforcing beam and the box body frame of the battery pack is low is to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a battery pack lower box body, a battery pack with the same and an automobile, and aims to solve the problem that the connection strength between a battery pack lower box body reinforcing beam and a box body frame is low.
A first aspect of an embodiment of the present application provides a lower case for a battery pack, including a lower case bottom plate, a lower case frame, a reinforcing beam, and a reinforcement;
the two ends of the stiffening beam are respectively and fixedly connected with the lower box body frame through the reinforcing parts so as to increase the connection rigidity of the stiffening beam and the lower box body frame; the reinforcing piece comprises two reinforcing parts which are arranged oppositely and form a first groove;
wherein, the first groove is matched with the stiffening beam.
Optionally, each reinforcement portion comprises a plurality of first reinforcing beads; the first reinforcing ribs are arranged in parallel.
Optionally, the edge beam mounting surface of the reinforcement part is provided with a second reinforcing rib, and the second reinforcing rib and the first reinforcing rib are arranged in a staggered manner.
Optionally, the reinforcing beam comprises a reinforcing beam upper convex part matched with the first groove, and at least one mounting hole matched with the first groove and the reinforcing beam upper convex part is arranged on the first groove and the reinforcing beam upper convex part;
the upper convex part of the reinforcing beam is inserted into the first groove and fixedly connected with the reinforcing beam through at least one mounting hole matched with the reinforcing beam, so that the reinforcing beam is fixedly connected with the reinforcing piece.
Alternatively, the width of the reinforcement beam upper protrusion gradually increases from the end surface inserted into the first groove to the end surface away from the first groove.
Optionally, the stiffening beam comprises a stiffening beam bottom, and the lower box body frame is provided with a second groove matched with the stiffening beam bottom;
the bottom of the stiffening beam is inserted into the second groove, so that the stiffening beam is fixedly connected with the lower box body frame.
Optionally, a limiting groove is formed in the side face of the bottom of the stiffening beam, a limiting structure matched with the limiting groove is arranged on the side face of the second groove, and the limiting structure is fixed in the limiting groove to limit relative movement in the height direction between the stiffening beam and the lower box body frame.
Alternatively, the width of the bottom of the reinforcing beam gradually increases from the end face inserted into the second groove to the end face away from the second groove.
A second aspect of the embodiments of the present application provides a battery pack, including a battery module, an upper box of the battery pack, and a lower box of the battery pack provided by the first aspect of the embodiments of the present application;
the battery pack upper box body and the battery pack lower box body are fixedly arranged, and a closed space is formed by the battery pack upper box body and the battery pack lower box body; the battery module is installed and fixed in the enclosed space.
A third aspect of an embodiment of the present application provides an automobile, including a lower case of a battery pack as provided in the first aspect of the embodiment of the present application; alternatively, a battery pack as provided in the second aspect of the embodiments of the present application is included.
Has the advantages that:
the application provides a battery package box under and have its battery package and car, the both ends of stiffening beam are respectively through reinforcement and lower box frame fixed connection, the stiffening beam has increased the reinforcement with the connection position of lower box frame promptly, with local rigidity and the intensity at the connection position that promotes stiffening beam and lower box frame, the risk that the stiffening beam takes place the fracture with the box frame has been reduced, the security performance and the reliability of battery package have been promoted, the technical problem that joint strength between battery package box stiffening beam and the box frame is low has been solved.
Secondly, the reinforcement includes two rib and first recess, and first recess and stiffening beam looks adaptation have set up the mounted position of stiffening beam in advance on the reinforcement promptly, and need not increase the arrangement space, and simultaneously, two rib are for first recess bilateral symmetry, all are provided with the rib promptly in stiffening beam and first recess adaptation position both sides, show local rigidity and the intensity that promotes the junction of stiffening beam and lower box frame.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an entire lower case of a battery pack according to an embodiment of the present disclosure;
fig. 2 is a schematic view illustrating an installation of a lower case of a battery pack according to an embodiment of the present application;
fig. 3 is a partially enlarged schematic view of a reinforcement of a lower case of a battery pack according to an embodiment of the present application;
fig. 4 is another enlarged partial view of a reinforcing member of a lower case of a battery pack according to an embodiment of the present application;
fig. 5 is a schematic partial cross-sectional view of a lower case of a battery pack according to an embodiment of the present application;
fig. 6 is another schematic partial cross-sectional view of a lower case of a battery pack according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a battery pack according to an embodiment of the present application.
Description of reference numerals: 1. a battery pack lower box body; 11. a reinforcement; 111. a reinforcing portion; 112. a first reinforcing rib; 113. a second reinforcing rib; 114. a first groove; 12. a reinforcing beam; 121. an upper convex part of the reinforcing beam; 122. the bottom of the stiffening beam; 123. a limiting groove; 13. a lower box body frame; 131. a second groove; 2. a battery module; 3. the battery pack is arranged on the box body.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the related art, the lower box body of the battery pack of the existing vehicle type is directly welded with the box body frame through the reinforcing beam, the welding line formed between the reinforcing beam and the box body frame becomes the main stress part of the reinforcing beam and the box body frame, and the welding line is very easy to fail and break when the vehicle bumps over or violently collides for a long time, so that the safety risk of the battery pack is increased. Therefore, the problem that the connection strength between the box body reinforcing beam and the box body frame of the battery pack is low is to be solved urgently.
In view of this, according to the battery pack lower box, the battery pack with the same and the automobile provided by the application, two ends of the stiffening beam are respectively and fixedly connected with the lower box frame through the reinforcing part, namely the reinforcing part is additionally arranged at the connecting part of the stiffening beam and the lower box frame, so that the local rigidity and strength of the connecting part of the stiffening beam and the lower box frame are improved, the risk of cracking of the stiffening beam and the box frame is reduced, the safety performance and reliability of the battery pack are improved, and the technical problem of low connecting strength between the stiffening beam and the box frame of the lower box of the battery pack is solved.
Example one
Referring to fig. 1, which shows a structural schematic diagram of the whole lower case 1 of the battery pack of the present application, and referring to fig. 6, which shows another partial cross-sectional schematic diagram of the lower case 1 of the battery pack of the present application, as shown in fig. 1 and fig. 6, the lower case 1 of the battery pack includes a lower case bottom plate, a lower case frame 13, a reinforcing beam 12 and a reinforcing member 11;
the bottom plate of the lower box body is the bottom of the lower box body 1 of the battery pack, the reinforcing beam 12 is arranged on the upper portion of the bottom plate of the lower box body, and two ends of the reinforcing beam 12 are fixedly connected with the lower box body frame 13 through the reinforcing pieces 11 respectively so as to increase the connection rigidity of the reinforcing beam 12 and the lower box body frame 13.
In this embodiment, both ends of the reinforcing beam 12 are respectively fixedly connected with the lower case frame 13 through the reinforcing members 11, that is, the reinforcing members 11 are added at the connecting part of the reinforcing beam 12 and the lower case frame 13, so as to improve the local rigidity and strength of the connecting part of the reinforcing beam 12 and the lower case frame 13, reduce the risk of cracking between the reinforcing beam 12 and the case frame, improve the safety performance and reliability of the battery pack, and solve the technical problem of low connecting strength between the reinforcing beam 12 and the case frame of the lower case 1 of the battery pack.
Based on the battery pack lower case 1, the following specific examples are provided, and on the premise of no mutual conflict, the examples can be combined arbitrarily to form a new battery pack lower case 1, and it should be understood that the new battery pack lower case 1 formed by combining the examples arbitrarily falls within the protection scope of the present application.
In a possible embodiment, with reference to fig. 2, there is shown a schematic view of the installation of a battery pack lower case 1 according to the present application, as shown in fig. 2, the reinforcing member 11 includes two reinforcing portions 111, the two reinforcing portions 111 are disposed opposite to each other, and forms a first groove 114, wherein the first groove 114 is adapted to the reinforcement beam 12, that is, the reinforcing member 11 is provided with the mounting position of the reinforcing beam 12 in advance without increasing the arrangement space, and at the same time, the two reinforcing parts 111 are left-right symmetrical with respect to the first groove 114, that is, the reinforcing parts 111 are arranged on both sides of the end surface of the reinforcing beam 12, so that the local rigidity and strength of the connecting part of the reinforcing beam 12 and the lower box body frame 13 are obviously improved, the risk of cracking of the reinforcing beam 12 and the box body frame is reduced, the safety performance and reliability of the battery pack are improved, and the technical problem of low connecting strength between the reinforcing beam 12 and the box body frame of the lower box body 1 of the battery pack is solved.
In a possible embodiment, referring to fig. 3, a partially enlarged schematic view of the reinforcing member 11 of the battery pack lower case 1 of the present application is shown, and as shown in fig. 3, each reinforcing part 111 includes a plurality of first reinforcing ribs 112; the plurality of first reinforcing ribs 112 are arranged in parallel, and the first reinforcing ribs 112 may be triangular oblique ribs or reinforcing ribs with other shapes, which is not limited herein. Referring to fig. 4, which shows another enlarged partial schematic view of the reinforcement 11 of the battery pack lower case 1 according to the present invention, as shown in fig. 4, the second reinforcing rib 113 is disposed on the edge beam mounting surface of the reinforcement portion 111, the second reinforcing ribs 113 are disposed in a staggered manner with respect to the first reinforcing ribs 112, a plurality of second reinforcing ribs 113 are disposed between every two adjacent first reinforcing ribs 112, and the plurality of second reinforcing ribs 113 may be disposed in parallel or in other arrangements, which is not limited herein. The second reinforcing rib 113 may be a vertical long rib, or may be a reinforcing rib having another shape, which is not limited herein.
The plurality of first reinforcing ribs 112 respectively provide support for different positions of the connecting position of the reinforcing beam 12 and the lower box body frame 13, so that the local strength and the rigidity of the plurality of positions of the connecting position are enhanced, the plurality of second reinforcing ribs 113 are arranged between every two adjacent first reinforcing ribs 112, the plurality of second reinforcing ribs 113 provide support for the two adjacent first reinforcing ribs 112, the structural rigidity and the strength of the reinforcing part 111 are improved, the local rigidity and the strength of the connecting position of the reinforcing beam 12 and the lower box body frame 13 are also greatly improved, the risk of cracking of the reinforcing beam 12 and the box body frame is reduced, the safety performance and the reliability of the battery pack are improved, and the technical problem of low connecting strength between the reinforcing beam 12 and the box body frame of the lower box body 1 of the battery pack is solved.
In this possible embodiment, as shown in fig. 2, the lower case frame 13 is provided with a second groove 131 which is matched with the reinforcement beam bottom 122, and referring to fig. 5, a partial cross-sectional view of the lower case 1 of the battery pack of the present application is shown, and as shown in fig. 5, the reinforcement beam 12 includes a reinforcement beam upper protrusion 121 which is matched with the first groove 114, and a reinforcement beam bottom 122 which is matched with the two insertion holes. The reinforcement beam upper protrusion 121 and the reinforcement beam bottom 122 are integrally formed, and the interface is in a delta shape, the reinforcement beam upper protrusion 121 is shorter than the reinforcement beam bottom 122, so that the reinforcement beam bottom 122 is inserted into the second groove 131, and the reinforcement beam upper protrusion 121 abuts against the sidewall.
Mounting holes are formed in the top surface, the left side and the right side of the upper reinforcing beam protrusion 121, and a plurality of mounting holes matched with the upper reinforcing beam protrusion 121 are also formed in the top surface, the left side and the right side of the first groove 114; the upper convex part 121 of the reinforcing beam is inserted into the first groove 114 and is fixedly connected with the reinforcing beam 12 and the reinforcing part 11 through a plurality of mounting holes matched with each other, so that the reinforcing beam 12 and the reinforcing part 11 are fixedly connected with each other on three sides, and the connection between the reinforcing beam 12 and the reinforcing part 11 is more stable. The connection mode between the first groove 114 and the mounting holes of the upper convex part 121 of the reinforcing beam can be rivet connection, bolt connection or pin connection, which is not limited herein.
In another possible embodiment, the reinforcing beam upper protrusion 121 has a width gradually increasing from the end surface inserted into the first groove 114 to the end surface away from the first groove 114. The part of the upper convex part 121 of the reinforcing beam inserted into the first groove 114 is trapezoidal, the part of the upper convex part 121 of the reinforcing beam inserted into the innermost end of the first groove 114 is the smallest in width, and the part of the upper convex part 121 of the reinforcing beam inserted into the outermost end of the first groove 114 is the largest in width, so that the upper convex part 121 of the reinforcing beam is conveniently inserted into the first groove 114 through the trapezoidal design, and the assembly efficiency is improved.
In one possible embodiment, the width of the portion of the reinforcing beam upper protrusion 121 inserted into the outermost end of the first groove 114 is slightly larger than the width of the first groove 114, so that the reinforcing beam 12 and the reinforcement 11 are in interference fit, and the stability of the connection between the reinforcing beam 12 and the reinforcement 11 is improved.
In this embodiment, the reinforcement beam bottom 122 is inserted into the second groove 131 to fixedly connect the reinforcement beam 12 to the lower casing rim 13. Simultaneously, the one side of 13 butts on each rib 111 and the lower box body frame all is provided with a plurality of mounting holes, the mounting hole that corresponds the position and also be provided with a plurality of cooperation installations on the lower box body frame 13, the mounting hole that corresponds on each rib 111 and the lower box body frame 13 aligns the back, fixed connection, with this accomplish stiffening beam 12, the erection joint between reinforcement 11 and the lower box body frame 13, the fixed connection mode can be rivet connection, also can be bolted connection, can also be pin junction, do not limit here, adopt above-mentioned connected mode, convenient dismantlement, the maintainability ability of battery package has been improved.
In the present embodiment, as shown in fig. 4, the side surface of the reinforcing beam bottom 122 is provided with a limiting groove 123, the side surface of the second groove 131 is provided with a limiting structure engaged with the limiting groove 123, and the limiting groove 123 may be a concave shape, a square shape, a chevron shape, a convex shape, or other shapes, which is not limited herein. The limiting structure is fixed in the limiting groove 123 to limit the relative movement in the height direction between the reinforcing beam 12 and the lower box body frame 13, so that a good space limiting effect is achieved, and the assembly and matching of the reinforcing beam 12 and the lower box body frame 13 are more compact and firm.
In one possible embodiment, the width of the reinforcement beam bottom 122 gradually increases from the end surface inserted into the second groove 131 to the end surface away from the second groove 131. The part of the reinforcing beam bottom 122 inserted into the second groove 131 is trapezoidal, the part of the reinforcing beam bottom 122 inserted into the innermost end of the second groove 131 is the smallest in width, and the part of the reinforcing beam bottom 122 inserted into the outermost end of the second groove 131 is the largest in width, so that the trapezoidal design facilitates the insertion of the reinforcing beam bottom 122 into the second groove 131, and the assembly efficiency is improved.
In one possible embodiment, the width of the portion of the bottom 122 of the reinforcing beam inserted into the outermost end of the second groove 131 is slightly larger than the width of the second groove 131, so that the reinforcing beam 12 and the lower box frame 13 are in interference fit, and the stability of the connection between the reinforcing beam 12 and the lower box frame 13 is improved.
Example two
Referring to fig. 7, which shows a schematic structural diagram of a battery pack according to the present application, as shown in fig. 7, a battery pack includes a battery module 2, an upper case 3 of the battery pack, and a lower case 1 of the battery pack according to the first aspect of the embodiment of the present application; the battery pack upper box body 3 and the battery pack lower box body 1 are fixedly arranged, and the battery pack upper box body 3 and the battery pack lower box body 1 form a closed space; the battery module 2 is mounted and fixed in the closed space.
The battery module 2 is fixedly arranged in the battery pack lower box body 1, and the battery pack upper box body 3 and the battery pack lower box body 1 are fixedly arranged, so that the battery module 2 is positioned in a closed space formed by the battery pack upper box body 3 and the battery pack lower box body 1.
The application provides a battery pack, reinforcement 11 and lower box frame 13 fixed connection are passed through respectively at the both ends of stiffening beam 12, stiffening beam 12 has increased reinforcement 11 with lower box frame 13's junction promptly, with local rigidity and the intensity at the junction of promoting stiffening beam 12 and lower box frame 13, the risk that the fracture took place for stiffening beam 12 and box frame has been reduced, the security performance and the reliability of battery pack have been promoted, the technical problem that joint strength between 1 stiffening beam 12 of battery pack lower box and the box frame is low has been solved.
Secondly, the reinforcement 11 includes two reinforcement portions 111 and a first groove 114, the first groove 114 is adapted to the reinforcement beam 12, that is, the reinforcement 111 is provided with an installation position of the reinforcement beam 12 in advance without increasing an arrangement space, and meanwhile, the two reinforcement portions 111 are bilaterally symmetrical with respect to the first groove 114, that is, the reinforcement portions 111 are provided on both sides of the adaptation position of the reinforcement beam 12 and the first groove 114, so that the local rigidity and strength of the connection part of the reinforcement beam 12 and the lower box frame 13 are significantly improved.
EXAMPLE III
An automobile comprises a lower box body 1 of a battery pack, wherein the lower box body is provided as a first aspect of the embodiment of the application; alternatively, a battery pack as provided in the second aspect of the embodiments of the present application is included.
The utility model provides an automobile, the both ends of stiffening beam 12 are respectively through reinforcement 11 and lower box frame 13 fixed connection, stiffening beam 12 has increased reinforcement 11 with lower box frame 13's the position of being connected promptly, with local rigidity and the intensity that promotes stiffening beam 12 and lower box frame 13's the position of being connected, the risk that the fracture took place for stiffening beam 12 and box frame has been reduced, the security performance and the reliability of battery package have been promoted, the technical problem that joint strength between battery package lower box 1 stiffening beam 12 and the box frame is low has been solved.
Secondly, the reinforcement 11 includes two reinforcement portions 111 and a first groove 114, the first groove 114 is adapted to the reinforcement beam 12, that is, the reinforcement 111 is provided with an installation position of the reinforcement beam 12 in advance without increasing an arrangement space, and meanwhile, the two reinforcement portions 111 are bilaterally symmetrical with respect to the first groove 114, that is, the reinforcement portions 111 are provided on both sides of the adaptation position of the reinforcement beam 12 and the first groove 114, so that the local rigidity and strength of the connection part of the reinforcement beam 12 and the lower box frame 13 are significantly improved.
It can be understood that the vehicle shown in the present application may be various types of vehicles such as a small passenger car, a medium passenger car, a large passenger car, and a heavy truck, and the battery pack lower case 1 provided in the present application may be disposed in each type of vehicle to optimize the user experience.
It should be understood that while the present specification has described preferred embodiments of the present application, additional variations and modifications of those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the true scope of the embodiments of the application.
The battery pack lower box body, the battery pack with the battery pack lower box body and the automobile provided with the battery pack lower box body are introduced in detail, specific examples are applied in the description to explain the principle and the implementation mode of the battery pack lower box body, and the description of the examples is only used for helping to understand the method and the core idea of the battery pack lower box body; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. The lower box body of the battery pack is characterized by comprising a lower box body bottom plate, a lower box body frame (13), a reinforcing beam (12) and a reinforcing piece (11);
the two ends of the reinforcing beam (12) are fixedly connected with the lower box body frame (13) through the reinforcing piece (11) respectively so as to increase the connection rigidity of the reinforcing beam (12) and the lower box body frame (13), the reinforcing piece (11) comprises two reinforcing parts (111), and the two reinforcing parts (111) are arranged oppositely to form a first groove (114);
wherein the first groove (114) is adapted to the reinforcement beam (12).
2. The battery pack lower case according to claim 1, wherein each of the reinforcing parts (111) includes a plurality of first reinforcing ribs (112); the first reinforcing ribs (112) are arranged in parallel with each other.
3. The lower case of the battery pack according to claim 2, wherein the edge beam mounting surface of the reinforcement part (111) is provided with a second reinforcing rib (113), and the second reinforcing rib (113) is staggered with the first reinforcing rib (112).
4. The battery pack lower case body according to claim 1, wherein the reinforcing beam (12) comprises a reinforcing beam upper protrusion (121) matched with the first groove (114), and at least one mounting hole matched with each other is formed in the first groove (114) and the reinforcing beam upper protrusion (121);
the reinforcing beam upper convex part (121) is inserted into the first groove (114) and fixedly connected through the at least one mounting hole which is matched with each other, so that the reinforcing beam (12) is fixedly connected with the reinforcing piece (11).
5. The battery pack lower case according to claim 4, wherein the reinforcing beam upper protrusion (121) has a width gradually increasing from an end surface inserted into the first groove (114) to an end surface distant from the first groove (114).
6. The battery pack lower case according to claim 1, wherein the reinforcement beam (12) includes a reinforcement beam bottom (122), and the lower case frame (13) is provided with a second groove (131) engaged with the reinforcement beam bottom (122);
the stiffening beam bottom (122) is inserted into the second groove (131) so that the stiffening beam (12) is fixedly connected with the lower box body frame (13).
7. The battery pack lower case body according to claim 6, wherein a limiting groove (123) is formed on a side surface of the reinforcing beam bottom (122), and a limiting structure matched with the limiting groove (123) is formed on a side surface of the second groove (131) so as to limit relative movement in the height direction between the reinforcing beam (12) and the lower case body frame (13).
8. The lower case of the battery pack according to claim 6, wherein the reinforcing beam bottom (122) has a width gradually increasing from an end surface inserted into the second groove (131) to an end surface distant from the second groove (131).
9. A battery pack, characterized by comprising a battery module (2), a battery pack upper case (3), and a battery pack lower case (1) according to any one of claims 1 to 8;
the battery pack upper box body (3) and the battery pack lower box body (1) are fixedly arranged, and a closed space is formed between the battery pack upper box body (3) and the battery pack lower box body (1); the battery module (2) is fixedly installed in the closed space.
10. An automobile, characterized by comprising a battery pack lower case (1) according to any one of claims 1 to 8; or, comprising a battery pack according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121851152.4U CN216389566U (en) | 2021-08-09 | 2021-08-09 | Battery pack lower box body, battery pack with same and automobile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121851152.4U CN216389566U (en) | 2021-08-09 | 2021-08-09 | Battery pack lower box body, battery pack with same and automobile |
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| CN216389566U true CN216389566U (en) | 2022-04-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024044980A1 (en) * | 2022-08-30 | 2024-03-07 | 宁德时代新能源科技股份有限公司 | Case, battery, and electric device |
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2021
- 2021-08-09 CN CN202121851152.4U patent/CN216389566U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024044980A1 (en) * | 2022-08-30 | 2024-03-07 | 宁德时代新能源科技股份有限公司 | Case, battery, and electric device |
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