Vehicle body, connecting structure for chemical compartment, vehicle, and assembly method for vehicle body

Abstract

A vehicle body (100), a connecting structure of a chemical compartment (40), a vehicle (1000), and an assembly method for the vehicle body (100). The vehicle body (100) comprises the chemical compartment (40), wherein the chemical compartment (40) defines an accommodating space (401) for accommodating a battery cell (60) and a top opening, which is in communication with the accommodating space (401), and the chemical compartment (40) is provided with a sealing region (402) and a mounting point (50); the sealing region (402) extends around the top opening and is configured to be in sealing fit with a fitting component, such that the fitting component covers and seals the top opening; and the mounting point (50) is configured for the mounting of the chemical compartment (40), and the mounting point (50) is located outside a region enclosed by the sealing region (402).

Description

Connecting structure of vehicle body and chemical chamber, and assembly method of vehicle and vehicle body

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. "202311274602.1" filed by Contemporary Amperex Technology Co., Ltd. on September 27, 2023. The entire contents of the above Chinese patent application are hereby incorporated into this application by reference. Technical Field

[0003] The present application relates to the field of vehicle technology, and in particular to a connection structure of a vehicle body and a chemical chamber, and an assembly method of the vehicle and the vehicle body. Background Art

[0004] In the related art, there are many factors that affect the sealing failure of the chemical chamber, which makes the chemical chamber easily seal-failed and reduces the sealing reliability.

[0005] Summary of the Invention

[0006] An embodiment of the present application provides a vehicle body that can reduce the factors that lead to chemical chamber sealing failure.

[0007] In a first aspect, an embodiment of the present application provides a vehicle body, comprising: a chemical chamber, wherein the chemical chamber defines a storage space for accommodating battery cells and a top opening connected to the storage space, wherein the chemical chamber is provided with a sealing area and an installation point, the sealing area extends around the top opening and is used to seal with a mating component so that the mating component covers the top opening, the installation point is used for the installation of the chemical chamber, and the installation point is located outside the area enclosed by the sealing area.

[0008] In the above technical solution, the sealing area of ​​the chemical chamber is sealed by matching components, and the installation point of the chemical chamber is located outside the area enclosed by the sealing area, which is conducive to improving the smoothness and continuity of the sealing surface, and the seal is not easily affected by other components, making it easier to achieve sealing, reducing the influencing factors that may easily lead to sealing failure in the area enclosed by the sealing area, and improving the sealing reliability.

[0009] In some embodiments, the sealing area is a smooth surface.

[0010] In the above technical solution, the smooth surface can achieve continuous sealing between different areas of the chemical chamber and matching components such as the front floor, improve the continuity of the sealing surface, and reduce factors causing sealing failure.

[0011] In some embodiments, the vehicle body further includes a sealing ring, which is in sealing contact with the sealing area.

[0012] In the above technical solution, the sealing effect of the chemical chamber can be greatly improved by providing a sealing ring, making it easier to meet the waterproof and dustproof requirements.

[0013] In some embodiments, the mounting point includes a mounting hole for mounting a fastener, and the fastener is used to apply a locking force in an up-and-down direction to the chemical chamber to compress the sealing area.

[0014] In the above technical solution, by applying a locking force in the up and down directions to the chemical chamber through fasteners, the compression force between the sealing area of ​​the chemical chamber and the mating parts such as the front floor can be increased, thereby improving the sealing effect and meeting the waterproof and dustproof requirements.

[0015] In some embodiments, the mounting point includes a first mounting point for mating with the mating component.

[0016] In the above technical solution, the chemical chamber is connected to the mating component through the first installation point. On the one hand, the installation of the chemical chamber can be realized, and the first installation point is located outside the sealing area to reduce the sealing failure factor inside the sealing area; on the other hand, the first installation point of the chemical chamber is directly connected to the mating component, which has a more significant effect on improving the sealing between the chemical chamber and the mating component.

[0017] In some embodiments, the mounting point includes a second mounting point for connection to a sill beam.

[0018] In the above technical solution, the chemical chamber is connected to the threshold beam through the second mounting point. The first mounting point and the second mounting point cooperate to increase the connection points of the chemical chamber, which can improve the installation stability of the chemical chamber and is beneficial to improving the sealing effect of the sealing area.

[0019] In some embodiments, the chemical chamber includes a side beam, a first protruding portion provided on the upper portion of the outer peripheral surface of the side beam, and a second protruding portion provided on the lower portion of the outer peripheral surface of the side beam, the sealing area is provided on the upper end surface of the side beam, the first mounting point is provided on the first protruding portion, and the second mounting point is provided on the second protruding portion.

[0020] In this technical solution, the first and second protrusions are located at the upper and lower portions of the outer circumference of the side beam, respectively. This prevents interference with the door sill beam and floor, allows for a wider vertical range for the chemical chamber to be installed, and improves installation stability. Furthermore, the first and second protrusions contribute to increased structural strength and collision resistance of the side beam.

[0021] In some embodiments, the vehicle body further includes a floor, which is the matching component and seals with the sealing area to cover the top opening, and the floor extends continuously from a portion opposite to an area enclosed by the sealing area.

[0022] In this technical solution, the floor and chemical chamber can be sealed and connected before the vehicle body and upper body are assembled, facilitating easier and more effective sealing. Furthermore, the airtightness between the floor and chemical chamber does not need to be tested simultaneously with the body-in-white (BIW), eliminating the need for chemical chamber inspection and repair lines in the final assembly shop. This improves production cycle times and reduces costs and labor.

[0023] In some embodiments, the floor comprises a front floor, and a connection portion connected to a door sill beam is provided on an outer periphery of the front floor, and the connection portion is located outside an area enclosed by the sealing area.

[0024] In the above technical solution, by locating the connection part outside the area enclosed by the sealing area, the connection structure of the connection part can have no effect on the sealing of the chemical chamber, the failure of the sealing of the connection part will not lead to the failure of the sealing of the chemical chamber, and the height difference of the connection part will not affect the difficulty of sealing the chemical chamber.

[0025] In some embodiments, the mounting point includes a third mounting point, which is used to connect to the front panel, and the floor includes a first mating edge that is at least partially located outside the area enclosed by the sealing area, and the upper surface of the first mating edge is used to mate with the lower surface of the front panel.

[0026] In the above technical solution, the third installation point can be used to install and fix the chemical chamber from the front side, thereby improving the stability of the chemical chamber and the uniformity of the force applied to the chemical chamber in the circumferential direction.

[0027] In some embodiments, the chemical chamber includes a side beam and a third protruding portion provided on the upper portion of the outer peripheral surface of the side beam, the sealing area is provided on the upper surface of the side beam, and the third mounting point is provided on the third protruding portion.

[0028] In the above technical solution, the third mounting point is closer to the sealing area, which further enhances the sealing effect of the sealing area. Furthermore, the third mounting point is located on the third protrusion, which facilitates installation at the third mounting point. The third protrusion also enhances the structural strength of the side rail and improves its collision resistance.

[0029] In some embodiments, the mounting point includes a fourth mounting point, which is used to connect to the rear floor. The floor includes a front floor, and the front floor includes a second mating edge that is at least partially located outside the area enclosed by the sealing area. The upper surface of the second mating edge is used to mate with the lower surface of the rear floor.

[0030] In the above technical solution, the fourth installation point can be used to install and fix the chemical chamber from the rear side, thereby improving the stability of the chemical chamber and the uniformity of the force applied to the chemical chamber in the circumferential direction.

[0031] In some embodiments, the chemical chamber includes a side beam and a fourth protrusion provided on the upper portion of the outer peripheral surface of the side beam, the sealing area is provided on the upper surface of the side beam, and the fourth mounting point is provided on the fourth protrusion.

[0032] In the above technical solution, the fourth mounting point is closer to the sealing area, which further enhances the sealing effect of the sealing area. Furthermore, the fourth mounting point is located on the fourth protrusion, which facilitates installation at the fourth mounting point. The fourth protrusion also increases the structural strength of the side beam and improves its collision resistance.

[0033] In some embodiments, the vehicle body includes a front cabin assembly and a rear floor assembly, the chemical tank is connected between the front cabin assembly and the rear floor assembly, and the chemical tank is suitable for detachable connection with the upper body of the vehicle, and the upper body includes the mating component.

[0034] In the above technical solution, the chemical tank is detachably connected to the upper vehicle body, and the upper vehicle body includes matching parts, so that the chemical tank can be separated from the upper vehicle body when the chemical tank needs to be repaired, thereby separating the chemical tank from the matching parts, making the chemical tank easy to repair.

[0035] In some embodiments, the vehicle body includes a front cabin assembly, a front floor assembly and a rear floor assembly, the front floor assembly is connected between the front cabin assembly and the rear floor assembly, the front floor assembly includes the mating component, and the chemical chamber is located on the lower side of the front floor assembly and is detachably connected to the front floor assembly.

[0036] In the above technical solution, when the chemical tank is being inspected and repaired, the chemical tank can be removed from the vehicle body and disassembled from the matching parts to achieve the disassembly of the chemical tank. The disassembly process is not affected by the components inside the passenger compartment, and there is no need to disassemble the components inside the passenger compartment, thereby simplifying the disassembly and assembly process.

[0037] In a second aspect, an embodiment of the present application further provides a connection structure of a chemical chamber including: a chemical chamber, which defines a storage space for accommodating a battery cell and a top opening connected to the storage space; a mating component, which covers the top opening; and a sealing ring, which is arranged between the mating component and the chemical chamber and extends around the top opening, wherein the portion of the mating component opposite to the area enclosed by the sealing ring extends continuously.

[0038] In the above technical solution, the top opening of the chemical chamber is sealed by the matching component, and the part opposite to the area enclosed by the matching component and the sealing ring extends continuously, which can reduce the factors affecting the sealing failure between the matching component and the chemical chamber and improve the sealing reliability.

[0039] In some embodiments, the chemical chamber is provided with an installation point, which is used to connect with at least one of the mating component and the front panel, and the installation point is located outside the area enclosed by the sealing ring; and / or, the mating component includes a front floor and is provided with a connection point, which is used to connect with at least one of the door sill beam, the rear floor and the front panel, and the connection point is located outside the area enclosed by the sealing ring.

[0040] In the above technical solution, the number of joints on the mating components and the chemical chamber opposite to the area enclosed by the sealing area can be reduced, thereby improving the flatness, which is also beneficial to reducing the factors affecting the sealing failure and improving the sealing reliability.

[0041] In a third aspect, an embodiment of the present application further provides a vehicle comprising an upper vehicle body and the above-mentioned vehicle body, wherein the vehicle body is arranged on the lower side of the upper vehicle body; or comprises a connecting structure of the above-mentioned chemical chamber.

[0042] In the above technical solution, factors that may easily lead to sealing failure in the area enclosed by the sealing area can be reduced, thereby improving sealing reliability.

[0043] In a fourth aspect, an embodiment of the present application also provides an assembly method for the above-mentioned vehicle body, the assembly method comprising: sealingly fitting the sealing area of ​​the chemical chamber with a mating component to cover the top opening of the chemical chamber; connecting the mounting point of the chemical chamber with at least one of the mating component and the front panel to compress the sealing area.

[0044] In this technical solution, the mating component seals the chemical chamber, and the chemical chamber is connected via mounting points to compress the sealed area, thereby improving the sealing effect and meeting waterproof and dustproof requirements. Furthermore, the connection structure of the mounting points is located outside the area enclosed by the sealed area. After assembly, factors that may cause seal failure between the mating component and the chemical chamber are reduced, thereby improving sealing reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] FIG1 is a schematic diagram of a partial structure of a vehicle body provided in an embodiment of the present application;

[0046] FIG2 is a schematic diagram of a chemical chamber, a front floor assembly, a rear floor, and a front panel provided in an embodiment of the present application;

[0047] FIG3 is a schematic diagram of the partial structure of the chemical chamber, front floor, and threshold beam provided in an embodiment of the present application;

[0048] FIG4 is a schematic diagram of the partial coordination structure of the chemical chamber and the front panel provided in an embodiment of the present application;

[0049] FIG5 is a schematic diagram of the partial coordination structure of the chemical chamber and the rear floor provided in an embodiment of the present application;

[0050] FIG6 is a schematic diagram of a vehicle provided in an embodiment of the present application.

[0051] Figures and symbols: Vehicle 1000; Vehicle body 100; Upper vehicle body 200; Front cabin assembly 10; Front dash panel 11; First panel body 111; First reinforcement panel 112; Front floor assembly 20; Front floor 21; Connecting portion 211; First mating edge 212; Second mating edge 213; Door sill beam 22; Rear floor assembly 30; Rear floor 31; Second panel body 311; Second reinforcement panel 312; Chemical chamber 40; Accommodating space 401; Sealing area 402; First protrusion 41; Second protrusion 42; Third protrusion 43; Fourth protrusion 44; Side beam 45; Mounting point 50; First mounting point 51; Second mounting point 52; Third mounting point 53; Fourth mounting point 54; Battery cell 60; Sealing ring 70; Fastener 80; Seat mounting beam 90. DETAILED DESCRIPTION

[0052] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0053] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0054] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments.

[0055] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0056] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0057] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0058] The term "plurality" used in this application refers to two or more (including two).

[0059] From the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power stations, but are also widely used in electrical devices such as vehicles, ships, and aircraft. Batteries and other components can form the power supply system of the electrical device to ensure the safety and reliability of the electrical device. For example, electrical devices can be, but are not limited to, vehicles, mobile phones, tablets, laptops, ships, spacecraft, electric toys, and power tools. Vehicles can be fuel vehicles, gas vehicles, new energy vehicles, or rail vehicles. New energy vehicles can be pure electric vehicles, hybrid vehicles, plug-in hybrid vehicles, extended-range electric vehicles, and fuel cell vehicles.

[0060] For a vehicle, the body-in-white (BIW) is the structure used to mount and support components such as the vehicle's engine, seats, and air conditioning system. It can include the upper body and the vehicle body. The upper body refers to the portion of the vehicle used to transport passengers and cargo, and may include, for example, the cockpit and passenger compartment. The vehicle body may include the front cabin assembly, chemical storage compartment, and rear floor assembly. It should be understood that in the descriptions of this application, references to directions such as up, down, left, right, front, and back are based on the vehicle's orientation.

[0061] The front compartment assembly is used to transfer frontal collision loads. For example, it may include a front anti-collision beam, two front longitudinal beams, and two front torsion boxes. The front ends of the two front longitudinal beams are connected to the ends of the front anti-collision beam, and the rear ends of the two front longitudinal beams are connected to the two front torsion boxes. The front torsion boxes are connected to the chemical chamber. When the vehicle is hit, the front anti-collision beam evenly bears the expansion load, and the collision load is shared by the two front longitudinal beams and the corresponding two front torsion boxes, minimizing damage to the passenger compartment.

[0062] The rear floor assembly is a mounting platform for interior and exterior trim, electrical components, and other system components. It plays an important role in carrying passengers, placing the spare tire, and, during a rear-end collision, reducing damage to the fuel tank and minimizing passenger injuries by deforming itself. For example, the rear floor assembly may include a rear anti-collision beam, two rear longitudinal beams, two rear torsion boxes, and a rear crossbeam. The rear ends of the two rear longitudinal beams are connected to the ends of the rear anti-collision beam, the front ends of the two rear longitudinal beams are connected to the two rear torsion boxes, which are connected to the battery assembly, and the rear crossbeam connects the two rear torsion boxes. The upper body includes the rear floor, or the rear floor assembly includes the rear floor, so that the rear floor can be installed between the two rear longitudinal beams.

[0063] A chemical compartment refers to a physical module that contains one or more battery cells to provide higher voltage and capacity. For example, a chemical compartment can define a space for accommodating one or more battery cells or battery modules to reduce or prevent the impact of liquids or other foreign matter on the charging or discharging of the battery cells. Furthermore, the chemical compartment can not only be used to accommodate battery cells, but can also be connected to structures such as the front cabin assembly and the rear floor assembly, serving as a load-bearing and force-transmitting structure for the vehicle body.

[0064] Battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, and the present invention is not limited to these. Battery cells may be cylindrical, flat, rectangular, or have other shapes, and the present invention is not limited to these. Battery cells are generally categorized into three types based on packaging: cylindrical, prismatic, and soft-pack. The present invention is not limited to these three types.

[0065] For example, a battery cell may include a housing, an electrode assembly, and an electrolyte. The housing houses the electrode assembly and electrolyte. The electrode assembly consists of a positive electrode sheet, a negative electrode sheet, and a separator. A battery cell primarily operates by the movement of metal ions between the positive and negative electrode sheets.

[0066] For the chemical chamber, it is necessary to provide a relatively closed space for the battery cells to meet certain waterproof and dustproof requirements, such as meeting the IP68 protection level. In the related art, the front floor and the upper cover of the chemical chamber are combined into one, and the chemical chamber is sealed by the sealing structure of the front floor, which makes it difficult to meet the protection level requirements of the chemical chamber. In the sealing structure of the front floor, there is a height difference between the side sealing area and the front and rear sealing areas, which reduces the continuity of the sealing surface; and the front floor is composed of multiple parts, the overlapping surfaces of the parts are uneven, there are many joints, and the accuracy of the sealing surface is difficult to guarantee. The overlapping joints, welding points, bolt mounting holes, etc. on the front floor have become factors affecting the failure of the seal, which makes the chemical chamber seal easy to fail.

[0067] Based on this, the present application proposes a vehicle body 100 including a chemical chamber 40, which defines a storage space 401 for accommodating a battery cell 60 and a top opening communicating with the storage space 401. The chemical chamber 40 is provided with a sealing area 402 and a mounting point 50. The sealing area 402 extends around the top opening and is configured to seal with a mating component to seal the top opening. The mounting point 50 is used for mounting the chemical chamber 40 and is located outside the area enclosed by the sealing area 402.

[0068] In the vehicle body 100 of the above-mentioned structure, the sealing cooperation with the sealing area 402 of the chemical chamber 40 is achieved through matching components, and the installation point 50 of the chemical chamber 40 is located outside the area enclosed by the sealing area 402, which is beneficial to improving the smoothness and continuity of the sealing surface, and the seal is not easily affected by other components, making it easier to achieve sealing, reducing the influencing factors that may easily lead to sealing failure in the area enclosed by the sealing area 402, and improving the sealing reliability.

[0069] The vehicle body 100 disclosed in the embodiment of the present application can be used for a vehicle 1000, which can be a fuel vehicle, a gas vehicle, a new energy vehicle, a rail vehicle, etc., wherein the new energy vehicle can be a pure electric vehicle, a hybrid vehicle, a plug-in hybrid vehicle, an extended-range electric vehicle, and a fuel cell powered vehicle, etc.

[0070] Hereinafter, a vehicle body 100 according to an embodiment of the present application will be described with reference to the accompanying drawings.

[0071] Please refer to Figures 1-5. Figure 1 is a schematic diagram of a partial structure of a vehicle body 100 according to an embodiment of the present application. Figure 2 is a schematic diagram of a chemical chamber 40, a front floor assembly 20, a rear floor 31, and a front panel 11 according to an embodiment of the present application. Figure 3 is a schematic diagram of a partial structure of the chemical chamber 40, the front floor 21, and the door sill 22 according to an embodiment of the present application. Figure 4 is a schematic diagram of a partial structure of the chemical chamber 40 and the front panel 11 according to an embodiment of the present application. Figure 5 is a schematic diagram of a partial structure of the chemical chamber 40 and the rear floor 31 according to an embodiment of the present application. The vehicle body 100 includes a chemical chamber 40, which defines a receiving space 401 for accommodating a battery cell 60 and a top opening communicating with the receiving space 401. The chemical chamber 40 is provided with a sealing area 402 and a mounting point 50. The sealing area 402 extends around the top opening and is configured to seal with a mating component to seal the top opening. The mounting point 50 is used for mounting the chemical chamber 40 and is located outside the area enclosed by the sealing area 402.

[0072] The mating component may be a cover or a floor panel of vehicle 1000. The floor panel may be the front floor panel 21 or the rear floor panel 31, or both the front floor panel 21 and the rear floor panel 31 may cover the top opening. The following description uses the front floor panel 21 and the sealing area 402 as an example to cover the top opening. However, those skilled in the art will readily understand how other mating components may be used to cover the top opening.

[0073] The chemical chamber 40 defines a storage space 401 and a top opening, forming a coverless chamber. In embodiments where the top opening is covered by the front floor 21, the front floor 21 replaces the top cover used in related art to seal the storage space 401 and protect the battery cells 60 and other components within the storage space 401.

[0074] The front floor 21 is the floor within the passenger compartment, used to mount seats, armrests, and other components, and is designed to withstand the treads of passengers. By covering the top opening of the chemical compartment 40 with the front floor 21, the upper cover of the chemical compartment 40 can be eliminated, reducing the number of components and vertical space occupied. This provides more space for the battery cells 60 within the chemical compartment 40, thereby improving energy density. The front floor 21 can be integrated into either the upper body 200 or the vehicle body 100.

[0075] Furthermore, the sealing area 402 of the chemical chamber 40 can be a surface, groove, or protrusion of the chemical chamber 40, as long as it can achieve a seal between the chemical chamber 40 and the mating component. Furthermore, the sealing area 402 and the mating component can be sealed directly or through auxiliary components such as a sealing ring 70, all of which are within the scope of protection of this application. In the embodiment where the sealing ring 70 is used, the sealing ring 70 can be included in the vehicle body 100 or the upper body 200.

[0076] The chemical chamber 40 forms a seal directly with the mating parts such as the front floor 21, rather than using the sealing structure between the mating parts and other parts of the vehicle body 100 or the mating parts and other parts of the upper vehicle body 200 to achieve the sealing of the chemical chamber 40. This makes it easier to improve the sealing effect and the smoothness and continuity of the sealing surface. The sealing area 402 is not affected by other parts of the vehicle body 100 and the upper vehicle body 200, which is beneficial to improving the sealing continuity and reducing the factors affecting the sealing failure.

[0077] The mounting points 50 of the chemical chamber 40 are locations used to securely mount the chemical chamber 40 on the vehicle body 100 or the upper body 200. Mounting methods include, but are not limited to, welding, snap-fitting, and connection with fasteners 80. The chemical chamber 40 can be connected to other components of the vehicle body 100 or the upper body 200 through the mounting points 50, such as at least one of the front floor 21, the door sill 22, the dash panel 11, and the rear floor 31, to achieve installation of the chemical chamber 40.

[0078] Moreover, as shown in FIG3-FIG5, the mounting point 50 is located outside the area enclosed by the sealing area 402, so as to reduce the joints between the mating components and the parts of the chemical chamber 40 opposite to the area enclosed by the sealing area 402, thereby improving the flatness, and also helping to reduce the factors affecting the sealing failure and improve the sealing reliability.

[0079] For example, in some embodiments, the mating component, such as the floor, extends continuously relative to the area enclosed by the sealing area 402. In other words, no process holes are provided in this portion of the floor, and no sealing or blocking is required, thereby reducing areas prone to sealing failure and improving sealing reliability.

[0080] According to the vehicle body 100 of the embodiment of the present application, the installation point 50 of the chemical chamber 40 is located outside the area enclosed by the sealing area 402, which is beneficial to improving the smoothness and continuity of the sealing surface, and the seal is not easily affected by other components, making it easier to achieve sealing, reducing the influencing factors that are likely to cause sealing failure in the area enclosed by the sealing area 402, and improving the sealing reliability.

[0081] In some embodiments, the sealing area 402 is a smooth surface. This surface can be flat, meaning that different areas of the sealing area 402 are coplanar to eliminate height differences. Alternatively, the smooth surface can have different height differences, transitioned by arcs. Both of these methods enable continuous sealing between different areas of the chemical chamber 40 and the mating component, improving sealing surface continuity and reducing factors that may cause seal failure.

[0082] In some embodiments, as shown in Figures 3-5 , the vehicle body 100 includes a sealing ring 70 . The sealing ring 70 is in sealing contact with the sealing area 402 and is used to seal the gap between the chemical chamber 40 and a mating component, such as the front floor 21 . Materials for the sealing ring 70 include, but are not limited to, rubber, silicone, and the like. The sealing ring 70 can be a standalone component positioned between the chemical chamber 40 and the mating component, or it can be formed by applying and curing glue between the chemical chamber 40 and the mating component. The provision of the sealing ring 70 significantly improves the sealing effect between the chemical chamber 40 and the mating component, making it easier to meet waterproof and dustproof requirements.

[0083] In some embodiments, as shown in Figures 3 to 5, the mounting point 50 includes a mounting hole for installing a fastener 80, and the fastener 80 is used to apply a locking force in the up-down direction to the chemical chamber 40 to compress the sealing area 402. The fastener 80 includes but is not limited to bolts, screws, locks, etc. By applying a locking force in the up-down direction to the chemical chamber 40 by the fastener 80, the pressing force between the sealing area 402 of the chemical chamber 40 and the mating component can be increased, thereby improving the sealing effect, so as to meet the waterproof and dustproof requirements. For example, when the sealing area 402 is in contact with the mating component for sealing, the fastener 80 can be used to increase the pressing force between the two sealing surfaces, reduce the gap and improve the sealing effect; in the embodiment of sealing by the sealing ring 70, the locking force provided by the fastener 80 can be used to clamp the chemical chamber 40 and the mating component to the sealing ring 70, and the sealing ring 70 is compressed and deformed to improve the sealing effect.

[0084] According to some embodiments of the present application, as shown in FIG3 , the mounting point 50 includes a first mounting point 51, which is used to connect to a mating component so that the mating component covers the top opening. For example, the mating component may be a floor, which may include a front floor 21, or the floor may include a rear floor 31, or the floor may include both a front floor 21 and a rear floor 31. The chemical chamber 40 is connected to the mating component via the first mounting point 51. On the one hand, the chemical chamber 40 can be installed, and the first mounting point 51 is located outside the sealing area 402 to reduce the factor of sealing failure inside the sealing area 402. On the other hand, the first mounting point 51 of the chemical chamber 40 is directly connected to the mating component, which has a more significant effect on improving the seal between the chemical chamber 40 and the mating component.

[0085] For example, the first mounting point 51 may include a mounting hole extending in the up-down direction, and the fastener 80 is passed through the mounting hole and the mating component to apply a compressive force in the up-down direction to the sealing area 402 and the mating component to improve the sealing effect.

[0086] In some specific embodiments, as shown in Figure 3, the chemical chamber 40 includes a side beam 45 and a first protrusion 41, the first protrusion 41 is arranged on the upper part of the outer peripheral surface of the side beam 45, the sealing area 402 is arranged on the upper surface of the side beam 45, and the first installation point 51 is arranged on the first protrusion 41.

[0087] The side beam 45 is used to define the accommodating space 401. The upper end of the side beam 45 encloses a top opening. The sealing area 402 is provided on the upper surface of the side beam 45 so that the sealing area 402 surrounds the top opening to achieve a complete seal of the top opening. The first mounting point 51 is provided on the upper portion of the outer circumference of the first outer protrusion 41, which brings the first mounting point 51 closer to the sealing area 402. The connection between the first mounting point 51 and the mating component effectively increases the compression force of the sealing area 402.

[0088] In some embodiments, as shown in FIG. 3 , the mounting point 50 includes a second mounting point 52 , which is configured to be connected to the sill beam 22 .

[0089] The sill beam 22 is a crucial protective component of the vehicle 1000. It effectively defends against external intrusion during a side collision, protecting the integrity of the passenger compartment and mitigating injuries to occupants. The chemical chamber 40 is connected to the sill beam 22 via a second mounting point 52. The first and second mounting points 51, 52 combine to provide additional connection points for the chemical chamber 40, improving its installation stability and enhancing the sealing effectiveness of the sealing area 402.

[0090] In some specific embodiments, as shown in Figure 3, the chemical chamber 40 includes a side beam 45, a first protrusion 41 provided on the upper part of the outer peripheral surface of the side beam 45, and a second protrusion 42 provided on the lower part of the outer peripheral surface of the side beam 45, the sealing area 402 is provided on the upper end surface of the side beam 45, the first installation point 51 is provided on the first protrusion 41, and the second installation point 52 is provided on the second protrusion 42.

[0091] The first outer protrusion 41 and the second outer protrusion 42 are respectively arranged on the upper and lower parts of the outer peripheral surface of the side beam 45, so that the connection with the door sill beam 22 and the floor does not interfere with each other, and the chemical chamber 40 can be installed in a larger range in the upper and lower directions, thereby improving the installation stability.

[0092] In some embodiments, the distance between the first mounting point 51 and the outer periphery of the sealing area 402 is smaller than the distance between the second mounting point 52 and the outer periphery of the sealing area 402. The first mounting point 51 is closer to the sealing area 402, and the effect of improving the sealing is better. Specifically, in the inward and outward directions, that is, in the direction away from and close to the middle of the accommodating space 401, and in the direction perpendicular to the outer periphery of the side beam 45, the size of the first protrusion 41 protruding from the outer periphery of the side beam 45 is smaller than the size of the second protrusion 42 protruding from the outer periphery of the side beam 45, so that the first mounting point 51 is closer to the sealing area 402 than the second mounting point 52, and the high strength of the second protrusion 42 can provide more stable support and installation for the chemical chamber 40, thereby improving stability.

[0093] In some embodiments of the present application, the vehicle body 100 may not need a floor, such as the front floor 21. When the vehicle body 100 is assembled with the upper body 200, the chemical chamber 40 cooperates with the floor of the upper body 200 to achieve a seal. The floor does not occupy space within the vehicle body 100, allowing more space to be provided for installing the battery cells 60, thereby improving power density.

[0094] In other embodiments of the present application, as shown in Figures 1 to 5, the vehicle body 100 further includes a floor, which is a mating component and is sealed with the sealing area 402 to cover the top opening. In other words, the floor is integrated into the vehicle body 100, and the upper body 200 does not need to be provided with a floor. The floor and the chemical chamber 40 can be sealed and connected before the vehicle body 100 and the upper body 200 are assembled, which makes it easy to improve the convenience of the sealing operation and the sealing effect. In addition, the airtightness test between the floor and the chemical chamber 40 does not need to be tested together with the white body, and the final assembly workshop does not need to develop a chemical chamber 40 inspection line and a rework line, which is conducive to improving the production rhythm and reducing costs and working hours.

[0095] Furthermore, the portion of the floor extending continuously from the area enclosed by the sealing area 402. In other words, this portion of the floor is free of any process holes and is a complete plate, eliminating the need for sealing or plugging, thereby reducing areas prone to seal failure and improving seal reliability.

[0096] It should be noted that the continuously extending portion of the floor panel can extend along a plane or have a concave-convex structure. Furthermore, the floor panel can be a single-layer or multi-layer panel. For a single-layer panel, the portion of the single-layer panel opposite the area enclosed by the sealed area 402 extends continuously. For a multi-layer panel, the panels are stacked in an up-and-down direction, and the portion of one panel, multiple panels, or all panels opposite the sealed area 402 can extend continuously. This allows the portion of the floor panel opposite the area enclosed by the sealed area 402 to extend continuously.

[0097] In some specific embodiments, the floor panel includes a front floor panel 21, which further has connection points for connecting to at least one of the door sill beam 22, the rear floor panel 31, and the front panel 11. Connection methods include, but are not limited to, welding, bonding, and fasteners 80. Furthermore, these connection points are located outside the area enclosed by the sealing area 402. As a result, factors such as lap joints, welds, and adhesive coatings on the front floor panel 21 that could potentially cause seal failure are located outside the area enclosed by the sealing area 402, further reducing the risk of seal failure in the chemical chamber 40.

[0098] In some embodiments, as shown in FIG. 3 , a connection portion 211 connected to the door sill beam 22 is provided on the outer periphery of the front floor panel 21 , and the connection portion 211 is located outside the area enclosed by the sealing area 402 .

[0099] The connection method of the connecting portion 211 and the door sill beam 22 includes but is not limited to connection with fasteners 80, welding and bonding. For example, the connecting portion 211 can be sealed with the door sill beam 22 by welding and bonding, so as to facilitate the sealing of the passenger compartment.

[0100] The specific structure of the connecting portion 211 is not limited and may be a flange, a protrusion, or other structures. For example, as shown in FIG3 , the connecting portion 211 is a flange extending upward or downward relative to the front floor panel 21 . The middle portion of the flange may be bonded to the door sill beam 22 , and at least one of the upper and lower edges of the flange may be welded to the door sill beam 22 to improve the installation stability and sealing of the front floor panel 21 .

[0101] By locating the connection portion 211 outside the area enclosed by the sealing area 402, the connection structure of the connection portion 211 can have no effect on the sealing of the chemical chamber 40, and failure of the sealing of the connection portion 211 will not lead to failure of the sealing of the chemical chamber 40, and the height difference of the connection portion 211 will not affect the difficulty of sealing the chemical chamber 40.

[0102] According to some embodiments of the present application, as shown in FIG4 , the mounting point 50 may include a third mounting point 53 for connection to the front panel 11. The third mounting point 53 can be used to mount and secure the chemical chamber 40 from the front, thereby improving the stability of the chemical chamber 40 and the uniformity of the force applied to the chemical chamber 40 in the circumferential direction.

[0103] Furthermore, the floor panel (e.g., the front floor panel 21) includes a first mating edge 212 that is at least partially located outside the area enclosed by the sealing area 402. The upper surface of the first mating edge 212 is configured to mate with the lower surface of the dash panel 11. Thus, from top to bottom, the dash panel 11, the first mating edge 212, the sealing area 402, and the chemical chamber 40 are sequentially arranged. When the third mounting point 53 is connected to the dash panel 11, the dash panel 11 can restrain the first mating edge 212 of the floor panel from above and apply a compressive force to the first mating edge 212 to improve the seal between the first mating edge 212 and the sealing area 402. In embodiments including a sealing ring 70, the compressive force of the dash panel 11 enables the first mating edge 212 and the sealing area 402 to clamp the sealing ring 70, thereby improving the sealing effect.

[0104] Optionally, the first mating edge 212 can be connected to the front panel 11 by welding or other means, and the first mating edge 212 is at least partially located outside the area enclosed by the sealing area 402, so that the connection point can be arranged outside the area enclosed by the sealing area 402, so as to reduce the factors affecting the sealing failure of the chemical chamber 40 and reduce the risk of sealing failure.

[0105] In some specific embodiments, continuing to refer to Figure 4, the chemical chamber 40 includes a side beam 45 and a third outer protrusion 43 provided on the upper portion of the outer peripheral surface of the side beam 45, the sealing area 402 is provided on the upper surface of the side beam 45, and the third mounting point 53 is provided on the third outer protrusion 43.

[0106] The third mounting point 53 is closer to the sealing area 402, which further enhances the sealing effect of the sealing area 402. Furthermore, the third mounting point 53 is located on the third protruding portion 43, which facilitates installation at the third mounting point 53. The third protruding portion 43 also enhances the structural strength of the side beam 45 and improves its anti-collision performance.

[0107] In some embodiments of the present application, as shown in FIG4 , the dash panel 11 includes a first panel body 111 and a first reinforcing plate 112 located on the lower side of the first panel body 111. The edges of the first reinforcing plate 112 are connected to the first panel body 111 and the middle portion is spaced apart from the first panel body 111, so that the first reinforcing plate 112 can reinforce the strength of the first panel body 111, and a cavity is formed between the first reinforcing plate 112 and the first panel body 111. The first mating edge 212 is located between the edge of the first reinforcing plate 112 and the sealing area 402, that is, the connection area between the first reinforcing plate 112 and the first panel body 111 is opposite to the first mating edge 212, and the strength of the connection area is higher, so that the pressing force applied to the first mating edge 212 is more stable. The third mounting point 53 can be connected to the middle part of the first reinforcing plate 112. The connection structure does not need to be provided on the first plate body 111, which is beneficial to improving the integrity of the first plate body 111. For example, the fastener 80 is provided through the third mounting point 53 and the first reinforcing plate 112 and extends into the cavity above the first reinforcing plate 112.

[0108] According to some embodiments of the present application, as shown in FIG5 , the mounting point 50 includes a fourth mounting point 54, which is used to connect to the rear floor 31. The fourth mounting point 54 can be used to mount and secure the chemical chamber 40 from the rear side, thereby improving the stability of the chemical chamber 40 and the uniformity of the force applied to the chemical chamber 40 in the circumferential direction.

[0109] Furthermore, the floor panel includes a front floor panel 21, which includes a second mating edge 213 located at least partially outside the area enclosed by the sealing area 402. The upper surface of the second mating edge 213 is configured to mate with the lower surface of the rear floor panel 31. Thus, from top to bottom, the rear floor panel 31, the second mating edge 213, the sealing area 402, and the chemical chamber 40 are sequentially arranged. When the fourth mounting point 54 is connected to the rear floor panel 31, the rear floor panel 31 can restrain the second mating edge 213 of the front floor panel 21 from above and apply a compressive force to the second mating edge 213 to improve the seal between the second mating edge 213 and the sealing area 402. In embodiments including a sealing ring 70, the compressive force of the rear floor panel 31 enables the second mating edge 213 and the sealing area 402 to clamp the sealing ring 70, thereby improving the sealing effect.

[0110] Optionally, the second mating edge 213 can be connected to the rear floor 31 by welding or other means, and the second mating edge 213 is at least partially located outside the area enclosed by the sealing area 402, so that the connection point can be arranged outside the area enclosed by the sealing area 402, so as to reduce the factors affecting the sealing failure of the chemical chamber 40 and reduce the risk of sealing failure.

[0111] In some specific embodiments, continuing to refer to Figure 5, the chemical chamber 40 includes a side beam 45 and a fourth outer protrusion 44 provided on the upper portion of the outer peripheral surface of the side beam 45, the sealing area 402 is provided on the upper surface of the side beam 45, and the fourth mounting point 54 is provided on the fourth outer protrusion 44.

[0112] The fourth mounting point 54 is closer to the sealing area 402, which further enhances the sealing effect of the sealing area 402. Furthermore, the fourth mounting point 54 is located on the fourth protrusion 44, which facilitates installation at the fourth mounting point 54. The fourth protrusion 44 also increases the structural strength of the side member 45, improving its collision resistance.

[0113] In some embodiments of the present application, as shown in FIG5 , the rear floor panel 31 includes a second panel body 311 and a second reinforcing panel 312 located below the second panel body 311. The second reinforcing panel 312 is connected to the second panel body 311 at its edges and spaced apart from the second panel body 311 at its center, thereby enabling the second reinforcing panel 312 to reinforce the strength of the second panel body 311. A cavity is formed between the second reinforcing panel 312 and the second panel body 311. The second mating edge 213 is located between the edge of the second reinforcing panel 312 and the sealing area 402. Specifically, the connection area between the second reinforcing panel 312 and the second panel body 311 is opposite the second mating edge 213, providing greater strength in the connection area and more stable pressure applied to the second mating edge 213. The fourth connecting member is connected to the middle part of the second reinforcing plate 312. The connecting structure does not need to be provided on the second plate body 311, which is beneficial to improving the integrity of the second plate body 311. For example, the fastener 80 is passed through the fourth mounting point 54 and the second reinforcing plate 312, and extends into the cavity above the second reinforcing plate 312.

[0114] According to some embodiments of the present application, the vehicle body 100 includes a front cabin assembly 10 and a rear floor assembly 30, the chemical tank 40 is connected between the front cabin assembly 10 and the rear floor assembly 30, and the chemical tank 40 is suitable for detachable connection with the upper body 200 of the vehicle 1000, and the upper body 200 includes mating parts such as a floor.

[0115] The chemical chamber 40 is connected between the front cabin assembly 10 and the rear floor assembly 30 , and the connection method can be a detachable connection or a fixed connection, for example, it can be welding, bonding, fastener 80 connection, etc.

[0116] The chemical chamber 40 is detachably connected to the upper body 200, and the upper body 200 includes matching parts so that the chemical chamber 40 can be separated from the upper body 200 when the chemical chamber 40 needs to be inspected, thereby separating the chemical chamber 40 from the matching parts, making the inspection of the chemical chamber 40 convenient.

[0117] According to other embodiments of the present application, as shown in Figures 1 and 2, a vehicle body 100 includes a front cabin assembly 10, a front floor assembly 20, and a rear floor assembly 30. The front floor assembly 20 is connected between the front cabin assembly 10 and the rear floor assembly 30 to form a whole. The connection method can be a detachable connection or a fixed connection. The front floor assembly 20 includes a mating component, such as a front floor 21. The front floor assembly 20 includes a door sill beam 22 and the front floor 21 connected to the door sill beam 22, so that the mating components are integrated into the vehicle body 100. The chemical chamber 40 is located on the lower side of the front floor assembly 20 and is detachably connected to the front floor assembly 20.

[0118] When inspecting and repairing the chemical chamber 40, the chemical chamber 40 can be removed from the vehicle body 100 and disassembled from the mating parts to achieve the disassembly of the chemical chamber 40. The disassembly process is not affected by the components inside the passenger compartment, and there is no need to disassemble the components inside the passenger compartment, thereby simplifying the disassembly and assembly process.

[0119] As shown in Figures 1-5, the connection structure of the chemical chamber 40 according to the embodiment of the second aspect of the present application includes: a chemical chamber 40, a matching component, and a sealing ring 70. The chemical chamber 40 defines a storage space 401 for accommodating a battery cell 60 and a top opening connected to the storage space 401, and the matching component covers the top opening. The sealing ring 70 is arranged between the matching component and the chemical chamber 40 and extends around the top opening, wherein the portion of the matching component opposite to the area enclosed by the sealing ring 70 extends continuously.

[0120] The matching components include but are not limited to a cover, a floor, etc., and the floor may include at least one of a front floor 21 and a rear floor 31 .

[0121] According to the connection structure of the chemical chamber 40 in the embodiment of the present application, the top opening of the chemical chamber 40 is sealed by the mating component, and the part opposite to the area enclosed by the mating component and the sealing ring 70 extends continuously, which can reduce the factors affecting the failure of the seal between the mating component and the chemical chamber 40 and improve the sealing reliability.

[0122] It should be noted that, according to the connection structure of the vehicle body 100 of the first embodiment and the chemical chamber 40 of the second embodiment of the present application, the contents can be cross-referenced with each other, all technical features of the vehicle body 100 of the first embodiment can be introduced into the connection structure of the chemical chamber 40 of the second embodiment, and all technical features of the connection structure of the chemical chamber 40 of the second embodiment can be introduced into the vehicle body 100 of the first embodiment, which will not be repeated here.

[0123] In some embodiments, as shown in Figures 3-5 , the chemical chamber 40 is provided with a mounting point 50 for connection to at least one of a mating component and the front panel 11. Mounting point 50 is located outside the area enclosed by the sealing ring 70. This reduces the number of joints between the mating component and the area of ​​the chemical chamber 40 opposite the area enclosed by the sealing area 402, improving flatness, reducing factors that may influence seal failure, and improving seal reliability.

[0124] In some embodiments, as shown in Figures 3-5 , the mating component includes a front floor panel 21 and is provided with a connection point for connecting to at least one of the rocker beam 22, the rear floor panel 31, and the front panel 11. This connection point is located outside the area enclosed by the sealing ring 70. As a result, lap joints, welds, and adhesive coatings on the front floor panel 21, which could potentially cause seal failure, are located outside the area enclosed by the sealing area 402, further reducing the risk of seal failure in the chemical chamber 40.

[0125] As shown in Figure 6, a vehicle 1000 according to an embodiment of the third aspect of the present application includes an upper vehicle body 200 and a vehicle body 100 according to an embodiment of the present application, with the vehicle body 100 disposed on the underside of the upper vehicle body 200; or a connection structure for a chemical chamber 40 according to an embodiment of the present application. Thus, by employing the aforementioned vehicle body 100 or the aforementioned connection structure for the chemical chamber 40, factors that could easily lead to seal failure within the area enclosed by the sealing area 402 can be reduced, thereby improving seal reliability.

[0126] When the chemical chamber 40 is used in a vehicle 1000, the battery cells 60 within the chemical chamber 40 can be used to power the vehicle 1000, for example, as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller and a motor. The controller is used to control the chemical chamber 40 to power the motor, for example, to meet the power requirements of the vehicle 1000 during startup, navigation, and driving.

[0127] According to the fourth embodiment of the present application, the assembly method is used for the vehicle body 100, and the assembly method may include:

[0128] Seal the sealing area 402 of the chemical chamber 40 with the mating component to cover the top opening of the chemical chamber 40;

[0129] The mounting point 50 of the chemical tank 40 is connected to at least one of a mating component and the dash panel 11 to compress the sealing area 402 .

[0130] According to the assembly method of the embodiment of the present application, the mating component seals with the chemical chamber 40, and the chemical chamber 40 is connected via mounting points 50 to compress the sealing area 402, thereby improving the sealing effect and meeting the requirements of water and dustproofing. Furthermore, the connection structure of mounting points 50 is located outside the area enclosed by the sealing area 402. After assembly, factors that may cause sealing failure between the mating component and the chemical chamber 40 are reduced, thereby improving the sealing reliability.

[0131] The following describes a vehicle body 100 and a vehicle 1000 having the same according to a specific embodiment of the present application with reference to the accompanying drawings.

[0132] As shown in Figures 1-6, vehicle 1000 includes an upper body 200 and a vehicle body 100. Vehicle body 100 includes a front cabin assembly 10, a front floor assembly 20, a rear floor assembly 30, a chemical chamber 40, and a sealing ring 70. The front cabin assembly 10 includes a front panel 11; the front floor assembly 20 includes a sill beam 22, a front floor 21, and a seat mounting beam 90, which is located above the front floor 21 and connected to the sill beam 22; the rear floor assembly 30 includes a rear floor 31; and the chemical chamber 40 includes a frame and a bottom plate. The frame includes a plurality of side beams 45 connected end to end and an outer protrusion provided on the outer periphery of the side beams 45. The frame defines a storage space 401, a top opening, and a bottom opening, and the bottom plate covers the bottom opening of the frame. The chemical chamber 40 is formed as a coverless chamber and is mounted on vehicle body 100.

[0133] The front floor panel 21 covers the top opening of the chemical chamber 40 and is sealed by a sealing ring 70. The front floor panel 21 serves as both the passenger compartment floor and the cover for the chemical chamber 40. The chemical chamber 40's mounting points 50 are located outside the sealing ring 70 and are evenly spaced. These mounting points 50 are connected to the front floor panel 21, the dash panel 11, and the rear floor panel 31 via fasteners 80, ensuring uniform compression of the sealing ring 70.

[0134] Furthermore, the front floor 21 is a complete component. The area enclosed by the sealing ring 70 does not contain any process holes or joints in the corresponding front floor 21. After the front floor assembly 20 is welded and airtightness tested, the welding points between the front floor assembly 20 and the front cabin assembly 10, and between the rear floor assembly 30 and the front floor assembly 20, are all outside the sealing ring 70. The front side of the front floor 21 extends to the bottom of the front panel 11, and the overlapping surface between the front floor 21 and the front panel 11 is outside the sealing ring 70; the rear side of the front floor 21 extends to the bottom of the rear floor 31, and the overlapping surface between the front floor 21 and the rear floor 31 is outside the sealing ring 70. In this way, the entire surface of the front floor 21 is sealed with the chemical chamber 40, and the sealing surface between the front floor 21 and the chemical chamber 40 is a complete plane.

[0135] In the above embodiment, the front floor panel 21 replaces the traditional upper cover, reducing the number of components and space required, thereby improving energy density. Furthermore, all connection structures of the front floor panel 21 and all mounting points 50 of the chemical chamber 40 are located outside the sealing ring 70. The area of ​​the front floor panel 21 that faces the area enclosed by the sealing ring 70 is free of any process holes, effectively reducing factors that could influence seal failure and improving sealing reliability.

[0136] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0137] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A vehicle body, wherein: include: A chemical chamber, wherein the chemical chamber defines a receiving space for receiving a battery cell and a top opening communicating with the receiving space, wherein: The chemical warehouse is provided with a sealing area and an installation point. The sealing area extends around the top opening and is used to seal with a matching component so that the matching component covers the top opening. The installation point is used for the installation of the chemical warehouse and is located outside the area enclosed by the sealing area.

2. The vehicle body according to claim 1, wherein: The sealing area is a smooth surface.

3. The vehicle body according to any one of claims 1 to 2, wherein: A sealing ring is also included, and the sealing ring is in sealing contact with the sealing area.

4. The vehicle body according to any one of claims 1 to 3, wherein: The mounting point includes a mounting hole for mounting a fastener, and the fastener is used to apply a locking force along the up and down directions to the chemical chamber to compress the sealing area.

5. The vehicle body according to any one of claims 1 to 4, wherein: The mounting points include a first mounting point for connection with a mating component.

6. The vehicle body according to claim 5, wherein: The mounting points include a second mounting point for connection with a sill beam.

7. The vehicle body according to claim 6, wherein: The chemical chamber includes a side beam, a first convex portion arranged at the upper part of the outer peripheral surface of the side beam, and a second convex portion arranged at the lower part of the outer peripheral surface of the side beam, the sealing area is arranged on the upper end surface of the side beam, the first mounting point is arranged at the first convex portion, and the second mounting point is arranged at the second convex portion.

8. The vehicle body according to any one of claims 1 to 7, wherein: The invention also comprises a floor panel, which is the matching component and is sealingly matched with the sealing area to cover the top opening, and the floor panel continuously extends from a portion opposite to the area enclosed by the sealing area.

9. The vehicle body according to claim 8, wherein: The floor comprises a front floor, and a connecting portion connected to a door sill beam is provided on an outer peripheral edge of the front floor, and the connecting portion is located outside an area enclosed by the sealing area.

10. The vehicle body according to claim 8 or 9, wherein: The mounting points include a third mounting point, which is used to connect to the front panel. The floor includes a first mating edge that is at least partially located outside the area enclosed by the sealing area, and the upper surface of the first mating edge is used to relatively mate with the lower surface of the front panel.

11. The vehicle body according to claim 10, wherein: The chemical chamber comprises a side beam and a third convex portion arranged on the upper portion of the outer peripheral surface of the side beam, the sealing area is arranged on the upper surface of the side beam, and the third mounting point is arranged on the third convex portion.

12. The vehicle body according to any one of claims 8 to 11, wherein: The mounting points include a fourth mounting point, which is used to connect to the rear floor. The floor includes a front floor, and the front floor includes a second mating edge that is at least partially located outside the area enclosed by the sealing area. The upper surface of the second mating edge is used to relatively mate with the lower surface of the rear floor.

13. The vehicle body according to claim 12, wherein: The chemical chamber comprises a side beam and a fourth convex portion arranged on the upper portion of the outer peripheral surface of the side beam, the sealing area is arranged on the upper surface of the side beam, and the fourth mounting point is arranged on the fourth convex portion.

14. The vehicle body according to any one of claims 1 to 13, wherein: It comprises a front compartment assembly and a rear floor assembly, wherein the chemical chamber is connected between the front compartment assembly and the rear floor assembly, and the chemical chamber is suitable for being detachably connected to an upper body of a vehicle, and the upper body comprises the matching component.

15. The vehicle body according to any one of claims 1 to 13, wherein: It includes a front cabin assembly, a front floor assembly and a rear floor assembly, wherein the front floor assembly is connected between the front cabin assembly and the rear floor assembly, the front floor assembly includes the matching component, and the chemical chamber is located at the lower side of the front floor assembly and is detachably connected to the front floor assembly.

16. A chemical chamber connection structure, wherein: include: A chemical chamber, wherein the chemical chamber defines a receiving space for receiving a battery cell and a top opening communicating with the receiving space; a mating component, the mating component covering the top opening; A sealing ring is disposed between the matching component and the chemical chamber and extends around the top opening, wherein a portion of the matching component opposite to the area enclosed by the sealing ring extends continuously.

17. The connection structure of the chemical chamber according to claim 16, wherein: The chemical chamber is provided with a mounting point, the mounting point is used to connect with at least one of the matching component and the front panel, and the mounting point is located outside the area enclosed by the sealing ring; and / or, The matching component includes a front floor and is provided with a connection point, wherein the connection point is used to connect with at least one of a sill beam, a rear floor and a front panel, and the connection point is located outside the area surrounded by the sealing ring.

18. A vehicle, wherein: It comprises an upper vehicle body and a vehicle body as described in any one of claims 1-15, wherein the vehicle body is arranged on the lower side of the upper vehicle body; or it comprises a connecting structure of a chemical chamber as described in any one of claims 16-17.

19. An assembly method, wherein: For a vehicle body according to any one of claims 1 to 15, the assembly method comprises: Sealing the sealing area of ​​the chemical chamber with the matching component to cover the top opening of the chemical chamber; Connect the mounting point of the chemical tank to at least one of the mating component and the front panel to compress the sealing area.

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