Chassis device and vehicle
By integrating the upper box with the frame into an integrated structure and fixing the lower box, the structure of the chassis device of new energy commercial vehicles is simplified, the weight is reduced, and the maintenance convenience is improved, and the problems of complex structure and heavy weight of the chassis device are solved.
Patent Information
- Application Number
- CN202422237114.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-11
AI Technical Summary
The chassis device of new energy commercial vehicles is complex in structure, which leads to a large weight in the whole vehicle and is inconvenient to repair.
By integrating the upper box and the frame into an integrated structure, the lower box and the upper box are fixed, the structure of the chassis device is simplified and the weight is reduced. At the same time, the cover plate and the upper box end plate are used as the cross beams of the frame to form a stable connection structure for easy maintenance.
The structure of the chassis device is simplified, the weight of the whole vehicle is reduced, the convenience of maintenance is improved, and the strength requirements of the frame are met.
Smart Images
Figure CN223031074U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicle chassis, and particularly relates to a chassis device and a vehicle. Background Art
[0002] The chassis device of a new energy commercial vehicle generally includes a chassis device and a battery pack. Among them, the battery pack usually includes an installation box and battery units installed in the installation box. After the battery units and the installation box are assembled into an integral module on a subassembly line, the integral module (i.e., the battery pack) is fixed to the chassis device through a connecting bracket. This kind of chassis device not only has a complex structure but also causes the problem of a relatively large vehicle weight. Summary of the Utility Model
[0003] The main purpose of the utility model is to propose a chassis device, aiming to simplify the structure of the chassis device and reduce the weight of the chassis device.
[0004] To achieve the above object, the chassis device proposed by the utility model includes:
[0005] A vehicle frame, including two longitudinal beams;
[0006] A battery installation structure, the battery installation structure includes an installation box, the installation box includes an upper box body and a lower box body, the upper box body includes a cover plate and two upper box end plates arranged at the front and rear ends of the cover plate, the two longitudinal beams are respectively arranged on the left and right sides of the cover plate and serve as part of the structure of the upper box body, the lower box body, the two longitudinal beams, the cover plate and the two upper box end plates enclose an installation space for storing battery units.
[0007] In one embodiment, the longitudinal beam and the cover plate are integrally formed.
[0008] In one embodiment, first flanges are provided on the outer sides of the bottom edges of the longitudinal beam and the upper box end plate, and second flanges are correspondingly provided on the outer sides of the top edges of the lower box body, and the first flanges are connected to the second flanges to realize the installation of the lower box body and the upper box body.
[0009] In one embodiment, the first flange includes a side installation flange and an end installation flange, the side installation flange is bent outwards from the bottom edge of the longitudinal beam, and the end installation flange is bent outwards from the bottom edge of the upper box end plate.
[0010] In one embodiment, the longitudinal beam includes a first plate segment and a second plate segment distributed in the front-rear direction and connected to each other, the cover plate is connected to the second plate segment, the bottom edge of the second plate segment is bent outwards to form the end installation flange, and the bottom edge of the first plate segment is folded inwards towards the inside of the upper box body to form an inner folding flange.
[0011] In one embodiment, two first plate segments are provided and are respectively disposed at the front and rear ends of the second plate segment. The vehicle frame further includes a plurality of cross beams, and the plurality of cross beams are respectively disposed on the two first plate segments.
[0012] In one embodiment, the bottom surfaces of the side mounting flanges and the end mounting flanges are flush with each other.
[0013] In one embodiment, the chassis device further includes a sealing ring, and the sealing ring is clamped between the first flange and the second flange.
[0014] In one embodiment, the second flange is provided in a ring shape around the opening of the lower box body.
[0015] In one embodiment, the side edges of the upper box end plate in the left - right direction are folded outward toward the outside of the installation space to form connecting flanges, and the connecting flanges are hermetically connected to the longitudinal beams.
[0016] In one embodiment, the lower box body has two lower box end plates distributed in the front - rear direction, and the lower box end plates are provided with wiring ports for installing wiring terminals.
[0017] In one embodiment, the lower box body further includes a liquid - cooling plate, and the liquid - cooling plate includes the bottom plate of the lower box body, and the bottom plate is provided with a refrigerant channel.
[0018] The present utility model further provides a vehicle, and the vehicle includes the above - mentioned chassis device.
[0019] In the technical solution of the present utility model, by integrating the upper box body and the vehicle frame into an integrated structure and fixing the lower box body to the upper box body, at least part of the box - body structure of the installation box and the bracket structure for installing the original installation box on the vehicle frame can be saved. Thereby, the structure of the chassis device can be simplified and the weight of the chassis device can be reduced. At the same time, the cover plate and the upper box end plate can serve as the cross beams of the vehicle frame to form a stable connection structure, meeting the strength requirements of the vehicle frame. During maintenance, only the lower box body needs to be removed to disassemble the battery unit from the vehicle frame, improving the convenience of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following - described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.
[0021] Figure 1 It is a schematic structural diagram of an embodiment of the chassis device provided by the present utility model;
[0022] Figure 2 Another structural schematic diagram of the illustrated embodiment; Figure 1 Another structural schematic diagram of the illustrated embodiment;
[0023] Figure 3 Another structural schematic diagram of the illustrated embodiment; Figure 1 A partial schematic diagram at position A in
[0024] Figure 4 Another structural schematic diagram of the illustrated embodiment; Figure 1 An exploded view of the illustrated embodiment;
[0025] Figure 5 A structural schematic diagram of another embodiment of the chassis device provided by the present utility model.
[0026] Explanation of the reference numerals in the drawings:
[0027] 100, vehicle frame; 11, longitudinal beam; 111, first plate section; 112, second plate section; 12, cross beam;
[0028] 200, battery installation structure; 21, installation box; 22, upper box body; 221, cover plate; 222, upper box end plate; 223, first flange; 224, end installation flanging; 225, side installation flanging; 226, inner folding flanging; 227, connection flanging; 23, lower box body; 231, second flange; 232, lower box end plate; 24, installation space; 25, sealing ring;
[0029] 300, battery unit.
[0030] The realization, functional features and advantages of the purpose of the present utility model will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Detailed implementation manners
[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0032] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0033] In addition, if the descriptions such as "first" and "second" are involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, or scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0034] The present utility model provides a chassis device.
[0035] Please refer to Figures 1 to 4 , in an embodiment of the present utility model, the chassis device includes a vehicle frame 100 and a battery pack mounting structure. The vehicle frame 100 includes two longitudinal beams 11. The battery mounting structure 200 includes a mounting box 21. The mounting box 21 includes an upper box body 22 and a lower box body 23. The upper box body 22 and the lower box body 23 enclose a mounting space 24 for storing battery units 300. The upper box body 22 includes a cover plate 221. The two longitudinal beams 11 are respectively disposed on the other two opposite sides of the cover plate 221, and the two longitudinal beams 11 serve as part of the structure of the upper box body 22. Two upper box end plates 222 are provided on the opposite sides of the cover plate 221. That is to say, by integrating the upper box body 22 with the vehicle frame 100 into an integrated structure and fixing the lower box body 23 to the upper box body 22, at least part of the box body structure of the mounting box 21 and the bracket structure for mounting the original mounting box 21 on the vehicle frame 100 can be saved, thereby simplifying the structure of the chassis device and reducing the weight of the chassis device. At the same time, the cover plate 221 and the upper box end plates 222 can serve as cross beams 12 of the vehicle frame 100 to form a stable connection structure to meet the strength requirements of the vehicle frame 100. During maintenance, only the lower box body 23 needs to be removed to disassemble the battery units 300 from the vehicle frame 100, improving the convenience of maintenance.
[0036] Without loss of generality, the battery unit 300 can be either a single battery cell or a battery cell module, and the present application does not make specific limitations thereon.
[0037] Please refer to Figure 2 , in an embodiment, the longitudinal beam 11 and the cover plate 221 are fixed by welding, that is, after the cover plate 221 and the longitudinal beam 11 are respectively stamped and formed, they are fixed into one body by welding. In this way, the structure is simple and easy to implement.
[0038] In another embodiment, the longitudinal beam 11 and the cover plate 221 are fixedly connected by bolts, and a sealing strip is clamped between the longitudinal beam 11 and the cover plate 211 to seal the installation space 24. In this way, the battery unit 300 can be repaired by removing the cover plate 221 from the longitudinal beam 11.
[0039] Of course, the longitudinal beam 11 and the cover plate 221 can also be of other structural forms. For example, please refer to Figure 5 , in another embodiment, the longitudinal beam 11 and the cover plate 221 are integrally formed by stamping. That is, during the process of stamping the metal sheet into the vehicle frame 100, the two longitudinal beams 11 and the cover plate 221 are stamped from the same metal sheet, making the longitudinal beam 11 and the cover plate 221 integrated, which helps to improve the stability of the vehicle frame 100 and is conducive to the modular production of the vehicle frame 100.
[0040] In order to meet the IP protection requirements of the battery unit 300, in one embodiment, the upper box end plate 222 is hermetically connected to the cover plate 221 and the longitudinal beam 11 so that the upper box body 22 and the lower box body 23 can enclose a sealed installation space 24. Further, the upper box end plate 222 is welded to the cover plate 221 and the longitudinal beam 11, and the lower box body 23 is an integrally formed structure. In other embodiments, it can also be that a sealing strip is clamped between the upper box end plate 222 and the cover plate 221 and the longitudinal beam 11, and the upper box end plate 222 is screwed to the cover plate 221 and the longitudinal beam 11 to clamp the sealing strip to achieve the sealing of the upper box body 22.
[0041] In one embodiment, a first flange 223 is provided on the outer side of the bottom edge of the longitudinal beam 11 and the upper box end plate 222, and a second flange 231 is correspondingly provided on the outer side of the top edge of the lower box body 23. The first flange 223 and the second flange 231 are connected to each other to connect the lower box body 23 and the upper box body 22, so that the installation space 24 is a sealed space, which can effectively protect the battery unit 300. In other embodiments, it can also be that there are no first flange 223 and second flange 231, and the upper box end plate 222 of the upper box body 22 and the lower box end plate of the lower box body 23 are connected and fixed.
[0042] Please refer to Figure 3, in one embodiment, the first flange 223 and the second flange 231 are connected by bolts. The chassis device further includes a sealing ring 25, and the sealing ring 25 is clamped between the first flange 223 and the second flange 231. The bolts are screwed to move the first flange 223 and the second flange 231 closer to each other so that the first flange 223 and the second flange 231 can clamp the sealing ring 25, that is, to seal-connect the upper box body 22 and the lower box body 23, so that after the upper box body 22 and the lower box body 23 are assembled, the installation space 24 is in a sealed state, and thus can provide waterproof and dustproof protection for the battery unit 300. In other embodiments, it is also possible that after the first flange 223 and the second flange 231 are fixed by bolts, the installation space 24 is sealed with sealant.
[0043] In one embodiment, the first flange 231 includes a side mounting flange 225 and an end mounting flange 224. The side mounting flange 225 is bent outwards from the bottom edge of the longitudinal beam 11, and the end mounting flange 224 is bent outwards from the bottom edge of the upper box end plate 222. Since the upper box end plate 222, the longitudinal beam 11 and the cover plate 221 are integrally formed, the first flange 223 is also integrally formed on the upper box body 22. The end mounting flange 224 is formed on the upper box end plate 222, and the side mounting flange 225 is formed on the longitudinal beam 11, which is convenient for processing and forming the first flange 223. In other embodiments, the first flange 223 may only include the side mounting flange 225 or the end mounting flange 224. When the first flange 223 only includes the end mounting flange 224, the sealing ring 25 is abutted by the bottom edge of the longitudinal beam 11. When the first flange 225 only includes the side mounting flange 225, the sealing ring 25 is abutted by the bottom edge of the upper box end plate 222.
[0044] In one embodiment, the second flange 231 is arranged around the opening periphery of the lower box body 23 so as to uniformly extrude the sealing ring 25 together with the first flange 223. In other embodiments, the second flange 231 may be arranged relative to the first flange 223, that is, when the first flange 223 only includes the end mounting flange 224, the second flange 231 is arranged relative to the end mounting flange 224. When the first flange 223 only includes the side mounting flange 225, the second flange 231 is arranged relative to the side mounting flange 225.
[0045] In one embodiment, the longitudinal beam 11 includes a connected first plate segment 111 and a second plate segment 112. The cover plate 221 is connected to the second plate segment 112 of the longitudinal beam 11. The bottom edge of the second plate segment 112 is provided with an end mounting flange 224 that is turned outwardly toward the outside of the upper box body 22. The bottom edge of the first plate segment 111 is provided with an inner folding flange 226 that is turned inwardly toward the inside of the upper box body 22. The first flange 223 includes the end mounting flange 224. That is, the inner folding flange 226 can be used to strengthen the load-bearing structure of the longitudinal beam 11, and the end mounting flange 224 is used for installing the lower box body 23. Moreover, in the second plate segment 112, the cover plate 221 and the upper box end plate 222 can compensate for the load-bearing structure of the longitudinal beam 11, so that the longitudinal beam 11 still has good load-bearing capacity. In other embodiments, it is also possible that both the first plate segment 111 and the second plate segment 112 of the longitudinal beam 11 are provided with end mounting flanges 224.
[0046] Please refer to Figure 4 , in this embodiment, when the upper box end plate 222 is welded to the cover plate 221 and the longitudinal beam 11, the connection between the top side surface of the upper box end plate 222 and the bottom side surface of the cover plate 221 is arranged close to the inner side of the cover plate 221, so that the first flange 223 on the upper box end plate 222 and the first flange 223 on the longitudinal beam 11 can enclose a frame. It should be noted that after the first flange 223 is stamped on the upper box end plate 222, it is welded to the cover plate 221 and the longitudinal beam 11. At the same time, the lower side surface of the first flange 223 on the upper box end plate 222 and the lower side surface of the first flange 223 on the longitudinal beam 11 need to be arranged horizontally, so as to enable the first flange 223 and the second flange 231 to have uniform pressure on the sealing ring 25, so as to have a good sealing effect. Since the first flange 223 on the upper box body 22 is formed on the longitudinal beam 11 and the upper box end plate 222 respectively, it is necessary to make the first flange 223 on the upper box end plate 222 and the first flange 223 on the longitudinal beam 11 enclose a frame for the upper box body 22 and the lower box body 23 to uniformly extrude the sealing ring.
[0047] Furthermore, both the left and right side edges of the upper box end plate 222 are provided with connecting flanges 227 that are turned outwardly toward the installation space 24, and the connecting flanges 227 are welded and sealed to the longitudinal beam 11. Further, the connecting flanges 227 are welded and sealed to the end mounting flanges 224. In other embodiments, it is also possible that the connection between the top side surface of the upper box end plate 222 and the bottom side surface of the cover plate 221 is arranged close to the edge of the cover plate 221. The left and right sides of the first flange 223 of the upper box end plate 222 extend toward the longitudinal beam 11 and extend to the outside of the longitudinal beam 11, and the left and right side edges of the first flange 223 are arranged close to the edge of the end mounting flange 224, so that the first flange 223 on the upper box end plate 222 and the first flange 223 on the longitudinal beam 11 can enclose a frame. In another embodiment, it is also possible that the connecting flanges 227 are bolted to the longitudinal beam 11, and a sealing strip is interposed between the connecting flanges 227 and the longitudinal beam 11.
[0048] In one embodiment, two first plate segments 111 are provided and are disposed at opposite ends of the second plate segment 112. The vehicle frame 100 further includes a plurality of cross beams 12, and the plurality of cross beams 12 are respectively disposed on the two first plate segments 111 to strengthen the load-bearing structure of the first plate segments 111, so that the vehicle frame 100 has good load-bearing performance. The second plate segment 112 of the longitudinal beam 11 is integrated with the upper box body 22 to integrate the battery installation structure 200 into the vehicle frame 100. The length of the first plate segment 111 of the longitudinal beam 11 and the number of cross beams 12 on the first plate segment 111 can be adjusted according to the applicable vehicle structure, which is not limited herein. In other embodiments, only one first plate segment 111 may be provided, or the first plate segment 111 may have a shorter length and no cross beam 12.
[0049] In one embodiment, the chassis device further includes a battery unit 300, and the battery unit 300 is disposed in the installation space 24. That is, in this embodiment, the battery unit 300 (battery system) and the chassis structure (including the vehicle frame 100 and the battery installation structure 200) are produced and sold together as the chassis device. Of course, in other embodiments, the chassis device may also only include the chassis structure and not include the battery unit 300.
[0050] In one embodiment, the lower box body 23 is provided with a wiring port, and the wiring port is disposed on the lower box end plate 232 in the extending direction of the longitudinal beam 11. The battery unit 300 includes a wire group, and the wire group includes a wire interface, and the wire interface is exposed at the wiring port for supplying power to the vehicle. Further, the wiring port is disposed on the lower box end plate 232 near the front end of the vehicle. In other embodiments, the wiring port is disposed on the lower box end plate 232 away from the front end of the vehicle.
[0051] In one embodiment, the lower box body 23 further includes a liquid cooling plate, and the liquid cooling plate includes the bottom plate of the lower box body 23, and the bottom plate is provided with a refrigerant channel for thermal management of the battery unit 300. Further, the bottom plate of the lower box body 23 is provided with a refrigerant channel, and an inlet and an outlet for communicating with the refrigerant channel, and the refrigerant channel is used for the coolant to flow through. In this way, the thermal management performance of the battery installation structure 200 can be improved. Further, the bottom plate of the lower box body 23 is formed by an extrusion process, and the refrigerant channel is extruded. Of course, in other embodiments, other forms of liquid cooling plate structures may also be used, such as a liquid cooling plate with a stamping flow channel and brazing. It can be understood that when the material of the lower box body 23 is configured as aluminum alloy, the lower box body 23 with a refrigerant channel is compatible with two thermal management methods of battery unit liquid cooling and natural cooling. That is, if the coolant flows through the refrigerant channel, the coolant can cool and heat the battery unit 300; if the coolant does not flow through the refrigerant channel, the installation box 21 performs natural cooling.
[0052] The present utility model further provides a vehicle, which includes the aforementioned chassis device. For the specific structure of the chassis device, reference may be made to the above embodiments. Since this vehicle adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated herein one by one.
[0053] The above is only an exemplary embodiment of the present utility model, and does not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.
Claims
1. A chassis device, characterized in that: include: a vehicle frame, including two longitudinal beams; A battery mounting structure, the battery mounting structure includes a mounting box, the mounting box includes an upper box body and a lower box body, the upper box body includes a cover plate and two upper box end plates arranged at the front and rear ends of the cover plate, the two longitudinal beams are respectively arranged on the left and right sides of the cover plate, and serve as partial structures of the upper box body, the lower box body, the two longitudinal beams, the cover plate and the two upper box end plates enclose an installation space, and the installation space is used to store battery cells.
2. The chassis device according to claim 1, characterized in that: The longitudinal beam and the cover plate are formed separately.
3. The chassis device according to claim 1, characterized in that: A first flange is provided on the outer side of the bottom edge of the longitudinal beam and the upper box end plate, and a second flange is correspondingly provided on the outer side of the top edge of the lower box body. The first flange is connected to the second flange to achieve the installation of the lower box body and the upper box body.
4. The chassis device according to claim 3, characterized in that: The first flange includes a side mounting flange and an end mounting flange. The side mounting flange is formed by bending outward from the bottom edge of the longitudinal beam, and the end mounting flange is formed by bending outward from the bottom edge of the upper box end plate.
5. The chassis device according to claim 4, characterized in that: The longitudinal beam includes a first plate segment and a second plate segment distributed and connected along the front-to-back direction, the cover plate is connected to the second plate segment, the bottom edge of the second plate segment is bent outward to form the end mounting flange, and the bottom edge of the first plate segment is folded toward the inner side of the upper box body to form an inward folding flange.
6. The chassis device according to claim 5, characterized in that: There are two first plate sections, which are respectively arranged at the front and rear ends of the second plate section. The frame also includes a plurality of cross beams, which are respectively arranged at the two first plate sections.
7. The chassis device according to claim 4, characterized in that: The bottom surface of the side mounting flange is flush with the bottom surface of the end mounting flange; And / or, the chassis device further comprises a sealing ring, wherein the sealing ring is sandwiched between the first flange and the second flange; And / or, the second flange ring is arranged around the opening of the lower box body.
8. The chassis device according to claim 4, characterized in that: The side edge of the upper box end plate in the left-right direction is folded toward the outside of the installation space to form a connecting flange, and the connecting flange is sealed and connected to the longitudinal beam.
9. The chassis device according to claim 1, characterized in that: The lower box body has two lower box end plates distributed in the front-to-back direction, and the lower box end plates are provided with wiring ports for installing wiring terminals; And / or, the lower box body further includes a liquid cooling plate, the liquid cooling plate includes a bottom plate of the lower box body, and the bottom plate is provided with a refrigerant channel.
10. A vehicle, characterized in that: Comprising a chassis device as claimed in any one of claims 1 to 9.