Chassis device and vehicle

Abstract

The utility model discloses a chassis device and a vehicle, and relates to the technical field of vehicle chassis, the chassis device comprises a frame and a battery installation structure, the frame comprises a longitudinal beam and a cross beam arranged on the longitudinal beam; the battery mounting structure comprises a mounting box, the mounting box is provided with a mounting cavity used for storing a battery unit, and at least part of cross beams and / or longitudinal beams of the frame serve as part of the structure of the battery mounting box. According to the technical scheme, the structure of the chassis device can be simplified, and the weight of the chassis device can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle chassis, in particular to a chassis device and a vehicle. Background Art

[0002] The chassis device of new energy commercial vehicles usually includes a frame and a battery pack, wherein the battery pack usually includes a mounting box and a battery unit installed in the mounting box. After the battery unit and the mounting box are assembled into an integral module on the subassembly line, the integral module (i.e., the battery pack) is fixed to the frame through a connecting bracket. This type of chassis device is not only complex in structure, but also leads to a problem of heavy vehicle weight. Utility Model Content

[0003] The main purpose of the utility model is to provide a chassis device and a vehicle, aiming to simplify the structure of the chassis device and reduce the weight of the chassis device.

[0004] In order to achieve the above-mentioned purpose, the chassis device proposed by the utility model includes:

[0005] A vehicle frame, comprising a longitudinal beam and a cross beam provided on the longitudinal beam; and

[0006] A battery installation structure, the battery installation structure includes an installation box, the installation box has an installation cavity for storing battery units of the vehicle, at least part of the crossbeam and / or longitudinal beam of the frame serves as a partial structure of the installation box.

[0007] In one embodiment, the installation box includes a box body and a box cover arranged at the box opening of the box body, the box body has a first opening at two opposite ends in the extension direction of the cross beam, the longitudinal beam covers the first opening, and the part of the longitudinal beam covering the first opening is configured as the first side wall of the box body.

[0008] In one embodiment, the box body has second openings at two opposite ends in the extension direction of the longitudinal beam, the cross beam covers the second opening, and the portion of the cross beam covering the second opening is configured as a second side wall of the box body.

[0009] In one embodiment, the longitudinal beam cover is configured as the first side wall of the box body at the first opening, and at least two cross beams are provided. At least two cross beams are spaced apart along the length direction of the longitudinal beam and a receiving space is formed at the intervals. The box body is arranged in the receiving space, and the second side wall of the box body has a different structure from the cross beam.

[0010] In one embodiment, the box body includes a box bottom plate and at least two box vertical plates, at least two of the box vertical plates are arranged on the upper side of the box bottom plate at intervals along the length direction of the longitudinal beam, and two adjacent box vertical plates, the box bottom plate, and the longitudinal beam together enclose the installation cavity; the first and last two box vertical plates in the length direction of the longitudinal beam are configured as the second side wall of the box body.

[0011] In one embodiment, the box uprights and the longitudinal beams are welded and sealed and fixed, and / or the box bottom plate and the longitudinal beams are welded and sealed and fixed, and the box uprights and the box bottom plate are welded and sealed and fixed.

[0012] In one embodiment, the battery installation structure further includes a sealing strip, and the sealing strip is sandwiched between the edge of the box opening of the box body and the box cover.

[0013] In one embodiment, the longitudinal beam is provided with a plurality of installation positions corresponding to the transverse beam, and the transverse beam can be installed in one of the plurality of installation positions to adjust the length of the receiving space in the extension direction of the longitudinal beam.

[0014] In one embodiment, the installation box further includes a mounting bracket for installing a battery control module of the vehicle, wherein the mounting bracket is disposed in the installation box and connected to the longitudinal beam and / or the box body.

[0015] In one embodiment, a coolant channel is provided at the bottom of the box body, and the coolant channel is used for circulating the coolant.

[0016] In one embodiment, at least one of the longitudinal beam, the transverse beam and the installation box is made of a metal matrix composite material.

[0017] In one embodiment, the battery mounting structure further includes a bottom protective layer, and the bottom protective layer at least partially covers the lower surface of the mounting box.

[0018] In one embodiment, the chassis device further includes a battery unit, and the battery unit is disposed in the installation cavity.

[0019] The utility model also provides a vehicle, comprising the aforementioned chassis device.

[0020] The technical solution of the utility model can save at least part of the box structure of the original installation box by using at least part of the cross beam and / or the longitudinal beam as a part of the structure of the battery installation box, that is, by integrating the installation box with the frame into an integrated structure, thereby simplifying the structure of the chassis device and reducing the weight of the chassis device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 A structural schematic diagram of an embodiment of a chassis device provided by the utility model;

[0023] Figure 2 for Figure 1 An exploded view of the structure shown;

[0024] Figure 3 for Figure 1 The schematic diagram of the structure shown is a schematic diagram of the structure behind the hidden box cover;

[0025] Figure 4 for Figure 3 The structure shown is a schematic diagram of the structure after the battery unit, battery control module and sealing strip are hidden;

[0026] Figure 5 for Figure 4 An exploded view of the structure shown;

[0027] Figure 6 for Figure 5 Schematic diagram of the internal coolant channels of the bottom plate of the middle box.

[0028] Description of Figure Numbers:

[0029] 10. Frame; 11. Longitudinal beam; 12. Cross beam; 13. Accommodation space;

[0030] 20. Battery installation structure; 21. Installation box; 211. Installation cavity; 212. Box body; 212a. First side wall; 212b. Second side wall; 212c. Box opening; 213. Box bottom plate; 213a. Cooling liquid channel; 213b. Liquid inlet; 213c. Liquid outlet; 214. Box vertical plate; 215. Box cover; 22. Sealing strip; 23. Bottom guard plate;

[0031] 31. Battery cell; 32. Battery control module; 33. Connector.

[0032] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0036] The chassis device of new energy commercial vehicles usually includes a frame and a battery pack, wherein the battery pack usually includes a mounting box and a battery unit installed in the mounting box. After the battery unit and the mounting box are assembled into an integral module on the subassembly line, the battery pack is fixed to the frame through a connecting bracket. This kind of chassis device is not only complex in structure, but also leads to the problem of heavy vehicle weight.

[0037] In view of this, the utility model proposes a chassis device, the solution of the chassis device can simplify the structure of the chassis device and reduce the weight of the chassis device.

[0038] See also Figures 1 to 5 In one embodiment of the utility model, the chassis device comprises:

[0039] The vehicle frame 10 includes a longitudinal beam 11 and a cross beam 12 provided on the longitudinal beam 11; and

[0040] The battery mounting structure 20 includes a mounting box 21 having a mounting cavity 211 for storing a battery unit 31 of the vehicle, and at least a portion of the cross beam 12 and / or the longitudinal beam 11 of the frame 10 serves as a partial structure of the mounting box 21 .

[0041] The technical solution of the present utility model, by using at least a part of the cross beam 12 and / or the longitudinal beam 11 as a part of the structure of the battery installation box 21, that is, by integrating the installation box 21 and the frame 10 into an integrated structure, at least a part of the box body 212 structure of the original installation box 21 can be saved, thereby simplifying the structure of the chassis device and reducing the weight of the chassis device.

[0042] Without loss of generality, the battery unit 31 can be either a battery cell or a battery cell module, and this application does not make any specific limitation on this.

[0043] In one embodiment, at least one of the longitudinal beam 11, the cross beam 12 and the installation box 21 is made of a metal matrix composite material. In this way, the frame 10 is manufactured by using a metal matrix composite material instead of the conventional steel material used in the prior art, so that the frame 10 can achieve a weight reduction effect while meeting the performance requirements of the whole vehicle. Optionally, the metal matrix composite material is a high-strength aluminum alloy composite material, so that the frame 10 can achieve a weight reduction effect of more than 30%. Of course, in other embodiments, other metal matrix composite materials such as titanium alloy composite materials can also be used.

[0044] There are many ways to integrate the mounting box 21 and the frame 10 into an integrated structure, for example, see Figures 1 to 5 In one embodiment, the installation box 21 includes a box body 212 and a box cover 215 provided at a box opening 212c of the box body 212. The box body 212 has first openings at opposite ends in the extension direction of the cross beam 12. The longitudinal beam 11 covers the first opening, and the portion of the longitudinal beam 11 covering the first opening is configured as a first side wall 212a of the box body 212. In this embodiment, a portion of the longitudinal beam 11 serves as the first side wall 212a of the box body 212, so that the box body 212 does not need to be made into a complete box-shaped structure, thereby simplifying the structure of the installation box 21 and the chassis and reducing the weight of the chassis.

[0045] Of course, in another embodiment, the box body 212 may have a second opening at both opposite ends in the extension direction of the longitudinal beam 11, and the cross beam 12 covers the second opening, and the portion of the cross beam 12 covering the second opening is configured as the second side wall 212b of the box body 212. In this embodiment, a portion of the longitudinal beam 11 serves as the first side wall 212a of the box body 212, so that the box body 212 does not need to be made into a complete box-shaped structure, thereby simplifying the structure of the installation box 21 and the chassis and reducing the weight of the chassis. It should be noted that the first side wall 212a and the second side wall 212b are of different structures and are arranged to intersect.

[0046] In other embodiments, the installation box 21 may also include a box body 212 and a box cover 215 provided at a box opening 212c of the box body 212, the box body 212 has a first opening at two opposite ends in the extension direction of the cross beam 12, the longitudinal beam 11 covers the first opening, and the portion of the longitudinal beam 11 covering the first opening is configured as a first side wall 212a of the box body 212; and the box body 212 has a second opening at two opposite ends in the extension direction of the longitudinal beam 11, the cross beam 12 covers the second opening, and the portion of the cross beam 12 covering the second opening is configured as a second side wall 212b of the box body 212.

[0047] See also Figures 1 to 5 In one embodiment, optionally, the portion of the longitudinal beam 11 covering the first opening is configured as the first side wall 212a of the box body 212, and at least two cross beams 12 are provided, and at least two cross beams 12 are spaced apart along the length direction of the longitudinal beam 11, and a receiving space 13 is formed at the intervals, and the box body 212 is provided in the receiving space 13, and the second side wall 212b of the box body 212 intersecting with the first side wall 212a is a different structure from the cross beam 12. That is, in this embodiment, the longitudinal beam 11 and the box body 212 are integrated into an integrated structure, and the cross beam 12 is not a part of the structure of the box body 212. In this way, the structure and material of the cross beam 12 can be flexibly designed, so that the overall performance of the frame 10 meets the performance requirements of the whole vehicle.

[0048] In one embodiment, the box body 212 includes a box bottom plate 213 and at least two box vertical plates 214. The at least two box vertical plates 214 are arranged at intervals on the upper side of the box bottom plate 213 along the length direction of the longitudinal beam 11. The two adjacent box vertical plates 214, the box bottom plate 213, and the longitudinal beam 11 together enclose the installation cavity 211; the first and last box vertical plates 214 in the length direction of the longitudinal beam 11 are configured as the second side wall 212b of the box body 212. In this way, the structure is simple and easy to assemble the chassis device. Of course, in other embodiments, the box vertical plates 214 can also be arranged on the lower side of the box cover 215.

[0049] In this embodiment, there are three box upright plates 214, and the first and last two of the three box upright plates 214 serve as the second side wall 212b of the box body 212, while the box upright plate 214 in the middle serves as a partition to divide the internal space of the installation box 21 into two installation cavities 211. Of course, in other embodiments, the number of the box upright plates 214 can also be four, five, or six, etc.

[0050] It should be noted that, in this embodiment, adjacent refers to the relative positional relationship between the plurality of box uprights 214, and does not refer to the absolute positional relationship between the plurality of box uprights 214, that is, it does not refer to the box uprights 214 being arranged close to each other. For example, in an embodiment in which there are three box uprights 214, that is, in an embodiment in which the box body 212 includes a first box upright, a second box upright, and a third box upright that are sequentially distributed, the first box upright and the second box upright are in an adjacent relationship, and the second box upright and the third box upright are in an adjacent relationship, while the first box upright and the third box upright are not in an adjacent relationship.

[0051] In one embodiment, the installation box 21 also includes a mounting bracket (not shown in the drawings) for installing the battery control module 32 of the vehicle, and the mounting bracket is arranged in the installation box 21 and connected to the longitudinal beam 11 and / or the box body 212. It should be noted that the battery control module 32 generally includes modules such as BMS and BDU, which are electrically connected to the battery unit 31 to achieve battery control and management. Optionally in this embodiment, the two ends of the mounting bracket are respectively fixed to the mounting points of the two longitudinal beams 11 by screwing. Of course, in other embodiments, the battery control module 32 can also be arranged on the outside of the installation box 21.

[0052] See also Figures 3 to 5 Furthermore, the battery control module 32 is arranged near a box plate 214 located at one end of the box body 212, and the box plate 214 is provided with a connector 33 corresponding to the battery control module 32 and the battery unit 31, so that the battery control module 32 and the battery unit 31 can be electrically connected to the electronic components outside the installation box 21 through the connector 33. Among them, the upper surface of the box plate 214 is arched upward in the middle, and the connector 33 is at least partially sealed and installed on the arched area to avoid the connector 33 from occupying the installation space of the battery unit 31 below it, which is conducive to arranging more battery units 31 in the installation box 21 under the condition of the same size to obtain a higher power.

[0053] In order to meet the IP protection requirements of the battery unit 31, in one embodiment, the box upright plate 214 and the longitudinal beam 11 are welded and sealed, the box bottom plate 213 and the longitudinal beam 11 are welded and sealed, and the box upright plate 214 and the box bottom plate 213 are welded and sealed. On the one hand, the box upright plate 214 and the box bottom plate 213 are fixed to the longitudinal beam 11 by welding, which can save the connection bracket originally used to fix the installation box 21, thereby further simplifying the structure of the chassis device and reducing its weight. On the other hand, the sealed connection is achieved in the form of welding, so that the installation box 21 can form a closed cavity with a stable structure to ensure the safety of the battery unit 31, the battery control module 32 and other components in the installation cavity 211. Of course, in other embodiments, other forms can also be used to achieve the fixation between the box upright plate 214, the box bottom plate 213 and the longitudinal beam 11, such as sealed bonding combined with screwing or riveting.

[0054] See also Figures 2 to 3 In order to further meet the IP protection requirements of the battery unit 31, in one embodiment, the battery mounting structure 20 further includes a sealing strip 22, which is sandwiched between the edge of the box opening 212c of the box body 212 and the box cover 215. In this way, the IP protection requirements of the battery unit 31 can be better met. It can be understood that in the embodiment where the longitudinal beam 11 serves as the first side wall 212a of the box body 212, a portion of the sealing strip 22 abuts against the upper surface of the longitudinal beam 11, and the other portion abuts against the upper surfaces of the two box vertical plates 214 at the head and tail ends. Of course, in other embodiments, the sealing between the box opening 212c of the box body 212 and the box cover 215 can also be achieved by coating a sealant.

[0055] Optionally, in this embodiment, the box cover 215 is fixed to the box body 212 by bolts. In this way, the subsequent maintenance and replacement of the battery unit 31 and the battery control module 32 can be facilitated.

[0056] In one embodiment, the longitudinal beam 11 is provided with a plurality of mounting positions corresponding to the cross beam 12, and the cross beam 12 can be installed in one of the plurality of mounting positions to adjust the length of the receiving space 13 in the extension direction of the longitudinal beam 11. In this way, by adjusting the length of the receiving space 13, it can be suitable for batteries of different length specifications, thereby allowing the chassis device to be suitable for vehicle models with different battery capacity configurations. Optionally in this embodiment, the cross beam 12 is bolted to the longitudinal beam 11, and the mounting position on the longitudinal beam 11 can be configured as a mounting hole or a welding stud or other structure. Of course, in other embodiments, multiple mounting positions may not be provided, that is, the receiving space 13 is not adjustable.

[0057] See also Figure 6In one embodiment, the bottom wall of the box body 212 (i.e., the box bottom plate 213) is provided with a coolant channel 213a, and a liquid inlet 213b and a liquid outlet 213c connected to the coolant channel 213a, and the coolant channel 213a is used for circulating the coolant. In this way, the thermal management performance of the battery mounting structure 20 can be improved. Optionally, the box bottom plate 213 is formed by an extrusion process, and the coolant channel 213a 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 stamped flow channel and brazed.

[0058] It can be understood that the box 212 with the cooling liquid channel 213a is compatible with two thermal management methods: battery cell liquid cooling and natural cooling. That is, if the cooling liquid flows through the cooling liquid channel 213a, the cooling liquid can cool and heat the battery cell 31; if the cooling liquid does not flow through the cooling liquid channel 213a, the installation box 21 is naturally cooled.

[0059] In one embodiment, the battery mounting structure 20 further includes a bottom protective layer, which at least partially covers the lower surface of the mounting box 21. In this way, the bottom protective layer can effectively prevent the battery mounting structure 20 from being damaged by stone impact or other adverse working conditions at the bottom, thereby improving the safety of the battery.

[0060] In this embodiment, the bottom protective layer is optionally configured as a plate-like structure, that is, the bottom protective layer is set as a bottom protective plate 23. Further, the bottom protective plate 23 is connected to the lower side of the box body 212 by bolts. Optionally, the material of the bottom protective plate 23 can be configured as steel, plastic or composite material, etc. In this way, the structure is simple and the manufacture and installation of the bottom protective plate 23 are convenient.

[0061] Of course, in other embodiments, a polymer coating may be directly sprayed on the bottom of the installation box 21 to form a bottom protective layer, that is, the bottom protective layer is set as a polymer coating. The polymer coating may be made of various materials such as PVC and polyurea, and this application does not make specific restrictions on this.

[0062] In one embodiment, the chassis device further includes a battery unit 31, and the battery unit 31 is disposed in the mounting cavity 211. That is, in this embodiment, the battery unit 31 (battery system) and the chassis structure (including the frame and the battery mounting structure) are produced and sold together as a chassis device. Of course, in other embodiments, the chassis device may also include only the chassis structure without the battery unit 31.

[0063] The utility model also proposes a vehicle, which includes the aforementioned chassis device. The specific structure of the chassis device refers to the above-mentioned embodiment. Since the vehicle adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0064] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A chassis device, characterized in that: include: A vehicle frame, comprising a longitudinal beam and a cross beam arranged on the longitudinal beam; and A battery installation structure, the battery installation structure comprising an installation box, the installation box having an installation cavity for storing a battery unit, at least part of the cross beam and / or longitudinal beam of the frame serving as a part of the structure of the installation box; The installation box comprises a box body and a box cover provided at a box opening of the box body, the box body has first openings at two opposite ends in the extending direction of the crossbeam, the longitudinal beam covers the first opening, and the portion of the longitudinal beam covering the first opening is configured as a first side wall of the box body; And / or, the box body has second openings at two opposite ends in the extension direction of the longitudinal beam, the cross beam covers the second opening, and the portion of the cross beam covering the second opening is configured as a second side wall of the box body.

2. The chassis device according to claim 1, characterized in that: The box body includes a box bottom plate and at least two box vertical plates, at least two of the box vertical plates are arranged on the upper side of the box bottom plate at intervals along the length direction of the longitudinal beam, and two adjacent box vertical plates, the box bottom plate, and the longitudinal beam together enclose the installation cavity; the first and last two box vertical plates in the length direction of the longitudinal beam are configured as the second side wall of the box body.

3. The chassis device according to claim 2, characterized in that: The box upright plates and the longitudinal beams are welded and sealed and fixed, and / or the box bottom plate and the longitudinal beams are welded and sealed and fixed, and the box upright plates and the box bottom plate are welded and sealed and fixed.

4. The chassis device according to claim 1, characterized in that: The battery installation structure also includes a sealing strip, which is sandwiched between the edge of the box opening of the box body and the box cover.

5. The chassis device according to claim 1, characterized in that: The longitudinal beam cover is configured as the first side wall of the box body at the first opening. There are at least two cross beams, and at least two cross beams are spaced apart along the length direction of the longitudinal beam and form a receiving space at the intervals. The box body is arranged in the receiving space, and the second side wall of the box body has a different structure from the cross beam.

6. The chassis device according to claim 5, characterized in that: The longitudinal beam is provided with a plurality of installation positions corresponding to the transverse beam, and the transverse beam can be installed in one of the plurality of installation positions to adjust the length of the receiving space in the extension direction of the longitudinal beam; And / or, the installation box further comprises a mounting bracket for installing a battery control module of the vehicle, wherein the mounting bracket is arranged in the installation box and connected to the longitudinal beam and / or the box body.

7. The chassis device according to claim 1, characterized in that: A coolant channel is provided at the bottom of the box body, and the coolant channel is used for circulating the coolant.

8. The chassis device according to any one of claims 1 to 7, characterized in that: The material of at least one of the longitudinal beam, the cross beam and the installation box is configured as a metal matrix composite material; And / or, the battery mounting structure further includes a bottom protective layer, and the bottom protective layer at least partially covers the lower surface of the mounting box.

9. The chassis device according to any one of claims 1 to 7, characterized in that: The chassis device further includes a battery unit, and the battery unit is arranged in the installation cavity.

10. A vehicle, characterized in that: Comprising a chassis device as claimed in any one of claims 1 to 9.

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