Vehicle body and vehicle

Abstract

A vehicle body (400) and a vehicle (1000). The vehicle body (400) comprises: a battery accommodating portion (41), an accommodating space (41a) being provided in the battery accommodating portion (41), and a first opening being provided in the accommodating space (41a); a battery cell (20), the battery cell (20) being provided in the accommodating space (41a); a vehicle body floor (42), the vehicle body floor (42) covering the battery accommodating portion (41) and closing the first opening, and the vehicle body floor (42) being provided with a recess (421); and a heat exchange member (43), the heat exchange member (43) being provided in the recess (421) and used for exchanging heat with the battery cell (20).

Description

Body and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on and claims priority to Chinese Patent Application No. 202420847711.1, filed on April 23, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of vehicle technology, and in particular to a vehicle body and a vehicle. Background Technology

[0004] In recent years, new energy vehicles have experienced rapid development. In the field of electric vehicles, batteries, as the power source, play an irreplaceable and crucial role. The energy density of a battery affects its capacity and, consequently, the driving range of a new energy vehicle. Therefore, improving the energy density of batteries in vehicles has become one of the most pressing issues to be addressed in the development of new energy vehicles.

[0005] Summary of the Invention

[0006] This application provides a vehicle body and a vehicle that can effectively improve the energy density of the battery in the vehicle body, which is beneficial to improving the vehicle's electric range.

[0007] In a first aspect, embodiments of this application provide a vehicle body, including: a battery housing, the battery housing having a housing space, the housing space having a first opening; a battery cell, the battery cell being disposed within the housing space; a vehicle floor, the vehicle floor covering the battery housing and closing the first opening, and the vehicle floor having a groove; and a heat exchanger, the heat exchanger being disposed within the groove for exchanging heat with the battery cell.

[0008] In the above technical solution, the vehicle floor can integrate the function of a cover for the battery compartment, thereby reducing the number of parts, lowering manufacturing costs, and reducing the weight of the vehicle body. By providing grooves on the vehicle floor to accommodate heat exchange components, the space occupied by the heat exchange components within the accommodating space can be reduced, which helps to increase the space occupied by individual battery cells within the accommodating space and improve the energy density of the batteries in the vehicle body.

[0009] In some embodiments of this application, the groove is located outside the receiving space.

[0010] In the above technical solution, by positioning the groove on the outside of the housing space, space within the housing space can be saved, which is beneficial for further increasing the space ratio of battery cells within the housing space, thereby further improving the energy density of the battery in the vehicle body. Moreover, this solution can also separate the heat exchanger and the battery cells, reducing the probability of the heat exchanger malfunctioning or being damaged and affecting the battery cells, thus improving the reliability of the battery cells inside the housing space. At the same time, the groove's location on the outside of the housing space facilitates the disassembly of the heat exchanger, reducing its maintenance costs.

[0011] In some embodiments of this application, the thickness of the heat exchanger is less than or equal to the groove depth.

[0012] In the above technical solution, since the groove is located on the outside of the accommodating space, by ensuring that the thickness of the heat exchanger is less than or equal to the depth of the groove, the surface of the vehicle floor has a higher probability of remaining flat. This facilitates the arrangement of other components on the vehicle floor and is beneficial for the layout of the driver's compartment and passenger compartment. Furthermore, this solution allows for a greater installation depth of the heat exchanger within the groove, reducing the likelihood of the heat exchanger detaching from the groove and improving the installation reliability of the heat exchanger on the vehicle floor.

[0013] In some embodiments of this application, the vehicle body further includes a heat insulation member that covers the vehicle floor, wherein the orthographic projection of the groove on the vehicle floor is located within the orthographic projection of the heat insulation member on the vehicle floor.

[0014] In the above technical solution, the heat loss of the heat exchanger can be reduced by the heat insulation component, which is conducive to the heat exchanger interacting more fully with the battery cell for heat exchange. This can improve the heat exchange efficiency between the heat exchanger and the battery cell, reduce the probability of thermal runaway in the battery cell, and thus improve the reliability of the battery cell.

[0015] In some embodiments of this application, the vehicle floor has a protrusion that protrudes into the receiving space, and the surface of the protrusion located on the outer side of the receiving space has a groove.

[0016] In the above technical solution, a protrusion is provided on the vehicle floor, and a groove is provided on the protrusion. This protrusion provides ample space for arranging the groove, which allows for a suitable groove depth for installing heat exchange components, thus improving the installation reliability of the heat exchange components on the vehicle floor. Furthermore, while ensuring high installation reliability for both the heat exchange components and the vehicle floor, it also helps to reduce the thickness of the vehicle floor, thereby reducing material usage, lowering costs, and contributing to a lighter vehicle body.

[0017] In some embodiments of this application, the vehicle body floor is stamped with protrusions.

[0018] In the above technical solution, the protrusion can be understood as a concave rib formed by pressing the vehicle floor downwards. The concave area of ​​the rib forms a groove. In this way, the protrusion not only provides the setting position of the groove, but also improves the strength and rigidity of the vehicle floor. It can play a better protective role above the battery cell and reduce the probability of the battery cell being damaged by an impact from above.

[0019] In some embodiments of this application, the battery cell includes: a housing, the housing having multiple housing walls, one of which is a first housing wall, the first housing wall being fitted to a protrusion, and a filler being provided between the first housing wall and the vehicle floor.

[0020] In the above technical solution, the outer shell is attached to the protrusion through the first shell wall, which brings the outer shell closer to the heat exchanger. The heat exchanger can quickly exchange heat with the battery cells through the first shell wall, which helps improve the heat exchange efficiency of the battery cells. The filler acts as a support between the first shell wall and the vehicle floor, better supporting the vehicle floor and reducing the probability of deformation or damage to the vehicle floor. It also reduces the probability of displacement of the battery cells within the housing space, improving the stability of the battery cells within the housing space, thereby improving the operational reliability of the battery cells.

[0021] In some embodiments of this application, the filler includes at least one of a thermally conductive portion and an adhesive portion.

[0022] In the above technical solution, by including at least one of the heat-conducting part and the adhesive part in the filler, the filler can not only play a supporting role between the first shell wall and the vehicle floor, but also further expand its function to play a heat-conducting and / or adhesive role. When the filler includes the heat-conducting part, it can further improve the heat exchange efficiency of the heat exchange component to the battery cell. When the filler includes the adhesive part, it can improve the stability of the battery cell in the housing space, and make the installation area of ​​the battery cell and the battery housing part have higher strength and rigidity, which can improve the reliability of the vehicle body.

[0023] In some embodiments of this application, the outer casing is provided with a pressure relief section, which is located on the remaining shell walls except for the first shell wall.

[0024] In the above technical solution, by placing the pressure relief section on the remaining shell walls (excluding the first shell wall), the exhaust direction of the pressure relief section can be prevented from facing the vehicle floor and heat exchange components. This reduces the impact of the pressure relief section on the vehicle floor during thermal runaway of a single battery cell, thereby reducing the likelihood of the vehicle's passenger compartment and passenger compartment being affected by the high temperatures of thermal runaway, which is beneficial to improving the safety of the driver and passengers. Furthermore, this solution also reduces the impact of the pressure relief section on the heat exchange components, lowering the probability of damage to the heat exchange components due to damage caused by thermal runaway of a single battery cell, and thus extending the service life of the heat exchange components.

[0025] In some embodiments of this application, the pressure relief section is located on the shell wall at the bottom of the outer casing.

[0026] In this technical solution, the pressure relief section is further away from the vehicle floor and heat exchange components, which can further reduce the impact of the pressure relief section on the vehicle floor and heat exchange components when venting and depressurizing, thereby further improving the safety of the driver and passengers, and further reducing the probability of the heat exchange components being damaged in the event of thermal runaway of the battery cells.

[0027] In some embodiments of this application, the heat exchanger and the groove are bonded together. This bonding reduces the likelihood of the heat exchanger detaching from the groove, improves the secure installation of the heat exchanger in the groove, and thus enhances the heat exchange reliability of the heat exchanger to the battery cell, ultimately improving the reliability of the battery cell itself.

[0028] In some embodiments of this application, the heat exchange element is a heat exchange tube, and the heat exchange tube is constructed as a flat-mouthed tube.

[0029] In the above technical solution, by setting the heat exchanger as a heat exchange tube, the structure of the heat exchange tube is simple and the cost can be reduced. By setting the heat exchange tube as a flat tube, the flat tube can have a smaller thickness and a larger flow rate, which can achieve a higher heat exchange effect. At the same time, it occupies a smaller dimension in the thickness direction of the vehicle floor, which can make the overall structure of the vehicle floor and the heat exchanger more compact and help save space.

[0030] In some embodiments of this application, the heat exchanger includes a first heat exchange section and a second heat exchange section. The second heat exchange section is bent to form a U-shaped region. The first heat exchange section is bent and disposed within the U-shaped region and is bent and connected to the second heat exchange section. The groove includes a first groove and a second groove. The second groove and the second heat exchange section have the same shape. The second heat exchange section is disposed in the second groove. The first groove and the first heat exchange section have the same shape. The first heat exchange section is disposed in the first groove.

[0031] In the above technical solution, when the heat exchanger exchanges heat with a cell group formed by multiple battery cells, the U-shaped area formed by the outer second heat exchange section can be aligned with the outer battery cells of the cell group, and the first heat exchange section within the U-shaped area can be aligned with the inner battery cells. This allows the heat exchanger to compensate for the internal and external temperature difference caused by the heat exchange between the outer battery cells and the environment, making the heat exchange effect of the outer battery cells and the inner battery cells of the cell group more consistent, improving the temperature uniformity of the cell group, and thus improving the service life of the cell group to a certain extent.

[0032] In some embodiments of this application, the accommodating space is provided with a second opening, and the second opening is located at the bottom of the accommodating space relative to the first opening. The vehicle body also includes a lower cover plate, which covers the battery accommodating portion and closes the second opening.

[0033] In the above technical solution, since a first opening is provided at the top of the housing space, and a second opening is further provided at the bottom of the housing space, it is more convenient to install the battery cells into the battery housing. Moreover, since the vehicle body floor is installed on top of the battery housing, it is relatively difficult to disassemble the vehicle body floor after the vehicle is assembled. Therefore, during subsequent maintenance, the battery cells can be repaired or replaced by removing the cover plate, which can further reduce maintenance costs.

[0034] Secondly, embodiments of this application also provide a vehicle, which includes the vehicle body described above.

[0035] In the above technical solution, since the battery cells are housed within the battery compartment, the vehicle body can achieve a higher battery energy density, thereby improving the vehicle's electric range. Furthermore, the vehicle body has a smaller number of components and is lighter in weight, which helps reduce manufacturing costs and further improves the overall electric range. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 is a structural schematic diagram of a vehicle provided in some embodiments of this application;

[0038] Figure 2 is a partial structural diagram of the vehicle body provided in some embodiments of this application;

[0039] Figure 3 is an exploded view of a portion of the vehicle body structure provided in some embodiments of this application;

[0040] Figure 4 is a partial structural schematic diagram of the vehicle body provided in some embodiments of this application;

[0041] Figure 5 is a partial structural diagram of the vehicle body provided in some embodiments of this application;

[0042] Figure 6 is a schematic diagram of the structure of a heat exchanger provided in some embodiments of this application.

[0043] Icons: 1000, Vehicle; 20, Battery cell; 21, Casing; 211, First casing wall; 212, Pressure relief section; 200, Controller; 300, Motor; 400, Vehicle body; 41, Battery housing; 41a, Housing space; 42, Vehicle floor; 421, Groove; 422, Protrusion; 423, Transition rounded corner; 43, Heat exchange component; 431, First heat exchange section; 4311, Fourth section; 4312, Fifth section; 4320, U-shaped area; 432, Second heat exchange section; 4321, First section; 4322, Second section; 4323, Third section; 44, Heat insulation component; 45, Filler component; 46, Lower cover plate; 47, Attachment component; X, First direction; Y, Second direction; Z, Third direction. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0046] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0047] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0048] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0049] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0050] In this application, "multiple" means two or more (including two).

[0051] In this application, the battery cell may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and the embodiments of this application are not limited to these. The battery cell may be cylindrical, flat, cuboid, or other shapes, etc., and the embodiments of this application are not limited to these. Battery cells are generally divided into three types according to their packaging method: cylindrical battery cells, square battery cells, and pouch battery cells, and the embodiments of this application are not limited to these.

[0052] The battery mentioned in the embodiments of this application refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in this application may include a battery module or a battery pack. A battery generally includes a housing for encapsulating one or more battery cells or multiple battery modules. The housing can prevent liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0053] A single battery cell includes a casing, electrode assembly, and electrolyte. The casing houses the electrode assembly and electrolyte. The electrode assembly consists of a positive electrode, a negative electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the positive and negative electrode plates. The positive electrode includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector, while the uncoated positive current collector protrudes beyond the coated one, serving as the positive electrode tab. Taking a lithium-ion battery as an example, the positive current collector can be made of aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode includes a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector, and the negative current collector without the negative active material layer protrudes from the one with the negative active material layer. The negative current collector without the negative active material layer serves as the negative electrode tab. The material of the negative current collector can be copper, and the negative active material can be carbon or silicon, etc. To ensure that a large current can be passed without melting, there are multiple positive electrode tabs stacked together, and there are multiple negative electrode tabs stacked together.

[0054] The separator can be made of PP (polypropylene) or PE (polyethylene), etc. Furthermore, the electrode assembly can be a wound structure or a stacked structure; the embodiments of this application are not limited to these.

[0055] In recent years, new energy vehicles have experienced rapid development. In the field of electric vehicles, the power battery, as the power source, plays an irreplaceable and crucial role. A battery consists of a casing and multiple individual battery cells housed within it. The energy density of the battery affects its capacity and, consequently, the driving range of new energy vehicles. Therefore, improving the energy density of batteries in vehicles has become one of the most pressing issues to be addressed in the development of new energy vehicles.

[0056] In a typical vehicle body structure, a battery generally consists of a casing and multiple battery cells housed within it. The casing is mounted on the vehicle body, while a cooling plate is located inside the casing for heat exchange with the battery cells. However, due to the complex structure of the battery, the casing is quite heavy, and the cooling plate occupies space within the casing, affecting the space ratio of the battery cells inside. This results in low space utilization within the casing, leading to lower battery energy density and impacting the vehicle's driving range, thus hindering efforts to improve its overall range.

[0057] Based on the above considerations, in order to solve the problem of low energy density of batteries in the vehicle body affecting the vehicle's electric range, this application designs a vehicle body, including: a battery housing, battery cells, a vehicle floor, and a heat exchanger. The battery housing has a housing space with a first opening; the battery cells are disposed within the housing space; the vehicle floor covers the battery housing and closes the first opening, and the vehicle floor has a groove; the heat exchanger is disposed within the groove for exchanging heat with the battery cells.

[0058] In this vehicle body structure, the floor can integrate the function of a cover for the battery compartment, thereby reducing the number of parts, lowering manufacturing costs, and reducing the vehicle's weight. Furthermore, by incorporating recesses in the floor to accommodate heat exchangers, the space occupied by these heat exchangers can be reduced, allowing for a larger space occupied by individual battery cells. This increases the energy density of the batteries within the vehicle, and the reduced vehicle weight also contributes to improved electric range.

[0059] The vehicle body disclosed in this application can be used, but is not limited to, in electrical devices such as vehicles, ships, or aircraft.

[0060] For ease of explanation, the following embodiments use a vehicle 1000 according to an embodiment of this application as an example.

[0061] Please refer to Figure 1, which is a structural schematic diagram of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a fuel-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid vehicles, or range-extended vehicles, etc. The vehicle 1000 includes a body 400, within which a battery cell 20 is disposed. The battery cell 20 can be used to power the vehicle 1000; for example, the battery cell 20 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery cell 20 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0062] In some embodiments of this application, the battery cell 20 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0063] In the vehicle body 400, there can be multiple battery cells 20, which can be connected in series, parallel, or a combination thereof. A combination thereof means that multiple battery cells 20 are connected in both series and parallel configurations. Multiple battery cells 20 can be directly connected in series, parallel, or a combination thereof, and then the entire assembly of the multiple battery cells 20 is housed within the vehicle body 400. Alternatively, multiple battery cells 20 can first be connected in series, parallel, or a combination thereof to form battery modules, and then multiple battery modules can be connected in series, parallel, or a combination thereof to form a whole, which is then housed within the vehicle body 400. The vehicle body 400 may also include other structures; for example, the vehicle body 400 may also include a busbar component for realizing the electrical connection between the multiple battery cells 20.

[0064] Please refer to Figure 3, which is a partial structural schematic diagram of the vehicle body 400 provided in some embodiments of this application. The vehicle body 400 includes multiple rows of battery cells 20, which are arranged along a first direction X of the vehicle body 400. Each row of battery cells 20 includes multiple battery cells 20 arranged along a second direction Y. The first direction X and the second direction Y are the length direction and width direction of the vehicle body 400, respectively, and the first direction X and the second direction Y are perpendicular to each other.

[0065] Each battery cell 20 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell 20 can be cylindrical, flat, cuboid, or other shapes. For example, in Figure 3, the battery cell 20 is cuboid in shape.

[0066] In a first aspect, according to some embodiments of this application, referring to Figures 2, 3, and 4, an embodiment of this application provides a vehicle body 400, including: a battery housing 41, a battery cell 20, a vehicle floor 42, and a heat exchanger 43. The battery housing 41 has a housing space 41a, and the housing space 41a has a first opening; the battery cell 20 is disposed within the housing space 41a; the vehicle floor 42 covers the battery housing 41 and closes the first opening, and the battery housing 41 has a groove 421; the heat exchanger 43 is disposed within the groove 421 for exchanging heat with the battery cell 20.

[0067] The battery housing 41 can refer to a structure or component for accommodating the battery cell 20. The battery housing 41 can be a separate housing component, with an internal accommodating space 41a, and the housing component can be fixed to the vehicle floor 42. The battery housing 41 can also be part of the structure of the vehicle body 400. For example, the vehicle body 400 can include a main body, which can refer to the main frame structure of the vehicle body 400. The battery housing 41 can be a part of the main body structure. For example, the main body can include crossbeams and longitudinal beams, which constitute the battery housing 41. A rectangular space can be formed between the crossbeams and longitudinal beams, and this rectangular space can be the accommodating space 41a.

[0068] In this embodiment, there can be at least one battery cell 20 within the accommodating space 41a. Referring to Figure 3, when there are multiple battery cells 20, the multiple battery cells 20 can be arranged in one or more rows, and each row can have at least one battery cell.

[0069] The vehicle body floor 42 can refer to the bottom layer component of the vehicle body 400, and serves as the floor of the passenger compartment and driver's compartment of the vehicle 1000. The vehicle body floor 42 can be, but is not limited to, a metal plate, used to cover the battery housing 41. In this embodiment, the vehicle body floor 42 can cover the first opening of the housing space 41a, thus serving to close the housing space 41a.

[0070] The groove 421 can refer to a recessed area formed on the surface of the vehicle body floor 42. The groove 421 can be provided on the surface of the vehicle body floor 42 located inside the receiving space 41a or on the surface of the vehicle body floor 42 located outside the receiving space 41a.

[0071] The heat exchanger 43 can refer to a component or device used to transfer heat during the heat exchange process, which can exchange heat with the battery cell 20 and regulate the temperature of the battery cell 20. The heat exchanger 43 can be, but is not limited to, a heat exchanger, a heat sink, and a cooling pipe, etc. For example, the heat exchanger 43 can be a water-cooled pipe. The heat exchanger 43 can be disposed in the recess 421, thereby integrating the heat exchanger 43 onto the vehicle floor 42.

[0072] It is understood that, in the embodiment of this application, the vehicle body 400 forms a receiving space 41a on the battery receiving part 41, and the vehicle body floor 42 covers the first opening of the receiving space 41a. Thus, the vehicle body floor 42 can integrate the function of the cover of the battery receiving part 41, thereby reducing the number of cover parts, reducing the number of parts, reducing costs, and also helping to reduce the weight of the vehicle body 400, which is beneficial to enabling the vehicle 1000 to have a longer electric range.

[0073] By setting a groove 421 on the vehicle floor 42, and placing the heat exchanger 43 within the groove 421, regardless of whether the groove 421 is located on the surface of the vehicle floor 42 outside or inside the receiving space 41a, the groove 421 can accommodate at least part of the heat exchanger 43 (the heat exchanger 43 may be partially or entirely located within the groove 421). This reduces the space ratio of the heat exchanger 43 within the receiving space 41a, allowing more space within the receiving space 41a to arrange the battery cells 20. This increases the space ratio of the battery cells 20 within the receiving space 41a, enabling the vehicle body 400 to have a higher battery energy density without changing its volume and weight, and also helps to improve the electric range of the vehicle 1000 equipped with this vehicle body 400.

[0074] In the above technical solution, the vehicle floor 42 can integrate the function of the cover of the battery housing 41, thereby reducing the number of parts, lowering manufacturing costs, and reducing the weight of the vehicle body 400. By providing a groove 421 on the vehicle floor 42 for accommodating the heat exchanger 43, the space ratio of the heat exchanger 43 in the housing space 41a can be reduced, which is beneficial to increasing the space ratio of the battery cell 20 in the housing space 41a and improving the energy density of the battery in the vehicle body 400.

[0075] In some embodiments of this application, referring to FIG4, the groove 421 is located outside the receiving space 41a.

[0076] In this embodiment, on the one hand, the groove 421 is located outside the accommodating space 41a, which allows the heat exchanger 43 to be arranged outside the accommodating space 41a. Thus, the heat exchanger 43 will not occupy the space inside the accommodating space 41a, which is beneficial to further increase the space ratio of the battery cell 20 inside the accommodating space 41a and further improve the volumetric energy density of the vehicle body 400.

[0077] On the other hand, by installing the heat exchanger 43 within the recess 421 and arranging it outside the receiving space 41a, the impact of a failure of the heat exchanger 43 on the battery cell 20 can be reduced. For example, when the heat exchanger 43 is damaged, the above solution can reduce the probability of damage to the battery cell 20. Specifically, when the heat exchanger 43 is a component that uses medium flow for heat exchange (e.g., a water-cooled plate), the above solution can reduce the probability of a short circuit or water immersion in the battery cell 20 when the heat exchanger 43 leaks. When the heat exchanger 43 breaks, the probability of damage to the battery cell 20 can be reduced because of the barrier of the vehicle floor 42 between the heat exchanger 43 and the battery cell 20.

[0078] Secondly, the groove 421 is located on the outside of the accommodating space 41a. Therefore, when the heat exchanger 43 needs to be maintained, it is not necessary to remove the battery accommodating part 41. Instead, the heat exchanger 43 can be removed from the upper side of the vehicle floor 42 by simply lifting the carpet and other parts in the passenger compartment and driver's compartment of the vehicle 1000. This facilitates the inspection and replacement of the heat exchanger 43.

[0079] In the above technical solution, by positioning the groove 421 on the outside of the accommodating space 41a, space within the accommodating space 41a can be saved, which is beneficial for further increasing the space ratio of the battery cell 20 within the accommodating space 41a, thereby further improving the energy density of the battery in the vehicle body 400. Moreover, this solution also separates the heat exchanger 43 from the battery cell 20, reducing the probability of the heat exchanger 43 failing or being damaged and affecting the battery cell 20, thus improving the reliability of the battery cell 20 inside the accommodating space 41a. Simultaneously, the groove 421's location on the outside of the accommodating space 41a facilitates the disassembly of the heat exchanger 43, reducing its maintenance costs.

[0080] In some embodiments of this application, referring to FIG4, the thickness of the heat exchanger 43 is less than or equal to the groove depth of the groove 421.

[0081] For example, the "thickness dimension of heat exchanger 43" and the "depth dimension of groove 421" can refer to the dimensions in the third direction Z of FIG4. In this embodiment, the thickness dimension of heat exchanger 43 can be less than the depth dimension of groove 421, or the thickness dimension of heat exchanger 43 can be equal to the depth dimension of groove 421. This allows the heat exchanger 43 to be completely located within the groove 421, so that the surface of heat exchanger 43 away from the receiving space 41a does not extend beyond the groove 421.

[0082] In the above technical solution, since the groove 421 is located outside the accommodating space 41a, by ensuring that the thickness of the heat exchanger 43 is less than or equal to the depth of the groove 421, the surface of the vehicle floor 42 has a higher probability of remaining flat. This facilitates the arrangement of other components on the vehicle floor 42 and is beneficial to the layout of the driver's cabin and passenger compartment of the vehicle 1000. Moreover, this solution also allows for a relatively large installation depth of the heat exchanger 43 within the groove 421, reducing the probability of the heat exchanger 43 detaching from the groove 421 and improving the installation reliability of the heat exchanger 43 on the vehicle floor 42.

[0083] In some embodiments of this application, referring to Figures 4 and 5, the vehicle body 400 further includes a heat insulation member 44, which covers the vehicle body floor 42, and the orthographic projection of the groove 421 on the vehicle body floor 42 is located within the orthographic projection of the heat insulation member 44 on the vehicle body floor 42.

[0084] The thermal insulation component 44 can refer to a component used to reduce heat transfer or conduction, thereby preventing heat from spreading from a heat source to other parts. The thermal insulation component 44 can include, but is not limited to, foam insulation materials (including but not limited to polyurethane foam, polystyrene foam, and polyethylene foam, etc.), fiber insulation materials (including but not limited to glass wool, rock wool, and asbestos, etc.), metal insulation materials, rubber and plastic materials, etc. The thermal insulation component 44 can include, but is not limited to, thicker thermal insulation pads and thinner thermal insulation films, etc. For example, referring to Figure 4, the thermal insulation component 44 can be a thermal insulation pad.

[0085] "The orthographic projection of the groove 421 onto the vehicle floor 42 is located within the orthographic projection of the heat insulation component 44 onto the vehicle floor 42." This means that the heat insulation component 44 can cover the area where the groove 421 is located, that is, it can cover the heat exchange component 43.

[0086] In the above technical solution, the heat loss of the heat exchanger 43 can be reduced by the heat insulation component 44, which is conducive to the heat exchanger 43 interacting more fully with the battery cell 20 for heat exchange. This can improve the heat exchange efficiency between the heat exchanger 43 and the battery cell 20, reduce the probability of thermal runaway of the battery cell 20, and thus improve the reliability of the battery cell 20.

[0087] In some embodiments of this application, referring to Figures 4 and 5, the vehicle floor 42 is provided with a protrusion 422 protruding into the receiving space 41a, and the surface of the protrusion 422 located on the outer side of the receiving space 41a has a groove 421 formed therein.

[0088] The protrusion 422 can refer to a portion that protrudes outward from the surface of the vehicle floor 42. The protrusion 422 can be a thicker part of the vehicle floor 42, or it can be a protruding structure formed after the vehicle floor 42 is bent.

[0089] In the above technical solution, a protrusion 422 is provided on the vehicle floor 42, and a groove 421 is provided on the protrusion 422. This allows the protrusion 422 to provide a larger space for arranging the groove 421, which facilitates a suitable groove depth for installing the heat exchanger 43, thus improving the installation reliability of the heat exchanger 43 on the vehicle floor 42. Furthermore, while ensuring high installation reliability for both the heat exchanger 43 and the vehicle floor 42, it also helps to reduce the thickness of the vehicle floor 42, reducing the amount of material used and lowering costs, thereby reducing the weight of the vehicle body 400.

[0090] In some embodiments of this application, the vehicle floor 42 is stamped with a protrusion 422.

[0091] In the above technical solution, the protrusion 422 can be understood as a concave rib formed by pressing the vehicle floor 42 downwards. The concave area of ​​the rib forms a groove 421. In this way, the protrusion 422 can not only provide the setting position of the groove 421, but also improve the strength and rigidity of the vehicle floor 42. It can play a better protective role above the battery cell 20 and reduce the probability of the battery cell 20 being damaged by an impact from above.

[0092] In some embodiments of this application, referring to FIG4, a transition fillet 423 is provided at the bottom of the groove 421 and at the junction of the groove 421 and the vehicle floor 42. In this technical solution, by providing a transition fillet 423 at the bottom of the groove 421 and at the junction of the groove 421 and the vehicle floor 42, it is beneficial to reduce the probability of stress concentration and improve the reliability of the vehicle floor 42.

[0093] In some embodiments of this application, referring to FIG5, the battery cell 20 includes a housing 21, the housing 21 having a plurality of housing walls, one of which is a first housing wall 211, the first housing wall 211 being fitted to the protrusion 422, and a filler 45 being provided between the first housing wall 211 and the vehicle floor 42.

[0094] The shell wall can refer to the wall portion within the outer shell 21 used to form the internal space. The number of shell walls in the outer shell 21 can vary depending on its shape and construction. For example, when the outer shell 21 is cylindrical, it may include an upper shell wall, a lower shell wall, and cylindrical peripheral shell walls. When the outer shell 21 is cuboid, it may include an upper shell wall, a lower shell wall, a left shell wall, a right shell wall, a front shell wall, and a rear shell wall. The first shell wall 211 can refer to the shell wall among the multiple shell walls of the outer shell 21 that is positioned to closely abut the protrusion 422.

[0095] The filler 45 refers to the material or component that fills the space between the first shell wall 211 and the vehicle floor 42. The filler 45 may include, but is not limited to, foaming materials, adhesives, and thermally conductive materials.

[0096] In the above technical solution, the outer shell 21 is attached to the protrusion 422 through the first shell wall 211, which allows the outer shell 21 to be relatively close to the heat exchanger 43. The heat exchanger 43 can quickly exchange heat with the battery cell 20 through the first shell wall 211, which is beneficial to improving the heat exchange efficiency of the battery cell 20. The filler 45 can play a supporting role between the first shell wall 211 and the vehicle floor 42, better supporting the vehicle floor 42, which helps to reduce the probability of deformation or damage to the vehicle floor 42, and can also reduce the probability of displacement of the battery cell 20 within the accommodating space 41a, improving the stability of the battery cell 20 within the accommodating space 41a, thereby improving the working reliability of the battery cell 20.

[0097] In some embodiments of this application, the filler 45 includes at least one of a thermally conductive portion and an adhesive portion.

[0098] The thermally conductive part can refer to a material or component that can be used to conduct heat between the first shell wall 211 and the vehicle floor 42. This thermally conductive part may include, but is not limited to, thermally conductive silicone grease, thermally conductive metal parts, etc.

[0099] The adhesive component can refer to materials or parts that can be used to bond the first shell wall 211 and the vehicle body floor 42. The adhesive component may include, but is not limited to, structural adhesives and double-sided tapes.

[0100] It is understood that the filler 45 may include a heat-conducting portion. Alternatively, the filler 45 may also include an adhesive portion. Or, the filler 45 may also include a heat-conducting portion and an adhesive portion. In this embodiment, the heat-conducting portion and the adhesive portion may be staggered. For example, the heat-conducting portion and the adhesive portion may be elongated components that may be staggered along the second direction Y of FIG5.

[0101] In the above technical solution, by including at least one of the heat-conducting part and the adhesive part in the filler 45, the filler 45 can not only play a supporting role between the first shell wall 211 and the vehicle floor 42, but also further expand its function to play a heat-conducting and / or adhesive role. When the filler 45 includes the heat-conducting part, it can further improve the heat exchange efficiency of the heat exchanger 43 to the battery cell 20. When the filler 45 includes the adhesive part, it can improve the stability of the battery cell 20 in the accommodating space 41a, and make the mounting area of ​​the battery cell 20 and the battery accommodating part 41 have higher strength and rigidity, which can improve the reliability of the vehicle body 400.

[0102] In some embodiments of this application, referring to FIG5, the outer shell 21 is provided with a pressure relief portion 212, which is provided on the remaining shell walls except for the first shell wall 211.

[0103] The pressure relief section 212 can refer to a safety structure or device used to release pressure when the pressure inside the battery cell 20 exceeds a certain value. The pressure relief section 212 can include, but is not limited to, pressure relief valves, pressure relief plates, and pressure relief diaphragms. A pressure relief valve can refer to a valve component that can automatically open under a certain pressure. A pressure relief plate can refer to a metal sheet that can automatically rupture under a certain pressure. A pressure relief diaphragm can refer to a thin film that can expand and rupture under a certain pressure.

[0104] In this embodiment, the first shell wall 211 can refer to the top wall of the outer shell 21, and the pressure relief part 212 can be provided on the bottom shell wall or one of the multiple shell walls on the periphery of the outer shell 21. For example, the battery cells 20 can be arranged in multiple rows along the first direction X of the battery receiving portion 41, and the battery cells 20 in each row can be arranged in multiple rows along the second direction Y of the battery receiving portion 41. In this case, the pressure relief part 212 can be provided on the bottom shell wall of the outer shell 21. When the battery cells 20 are arranged in a row along the first direction X of the battery receiving portion 41, and the battery cells 20 are blade-shaped, the pressure relief part 212 can be provided on the shell wall of the outer shell 21 located at the end in the second direction Y.

[0105] In the above technical solution, by providing the pressure relief section 212 on the remaining shell walls except for the first shell wall 211, the exhaust direction of the pressure relief section 212 can be prevented from facing the vehicle floor 42 and the heat exchanger 43. This reduces the impact of the pressure relief section 212 on the vehicle floor 42 when the battery cell 20 experiences thermal runaway, thereby reducing the probability of the driver's compartment and passenger compartment of the vehicle 1000 being affected by the high temperature of thermal runaway, which is beneficial to improving the safety of the driver and passengers. Moreover, this solution can also reduce the impact of the pressure relief section 212 on the heat exchanger 43, which can reduce the probability of damage to the heat exchanger 43 when the battery cell 20 is damaged due to thermal runaway, thus helping to extend the service life of the heat exchanger 43.

[0106] In some embodiments of this application, referring to FIG5, the pressure relief section 212 is provided on the shell wall located at the bottom of the outer casing 21. In this technical solution, the pressure relief section 212 is further away from the vehicle floor 42 and the heat exchanger 43, thereby further reducing the impact of the pressure relief section 212 on the vehicle floor 42 and the heat exchanger 43 when venting and relieving pressure, thereby further improving the safety of the driver and passengers, and further reducing the probability of the heat exchanger 43 being damaged in the event of thermal runaway of the battery cell 20.

[0107] In some embodiments of this application, the heat exchanger 43 and the groove 421 are bonded together. In this embodiment, the bonding method between the heat exchanger 43 and the groove 421 includes, but is not limited to, structural adhesive and double-sided adhesive.

[0108] In the above technical solution, the heat exchanger 43 and the groove 421 are bonded together, which reduces the probability of the heat exchanger 43 detaching from the groove 421, improves the installation firmness of the heat exchanger 43 in the groove 421, thereby improving the heat exchange reliability of the heat exchanger 43 to the battery cell 20 and improving the working reliability of the battery cell 20.

[0109] In some embodiments of this application, referring to Figures 4 and 5, the heat exchanger 43 is a heat exchange tube, and the heat exchange tube is constructed as a flat-mouthed tube.

[0110] A heat exchange tube can refer to a tubular component that exchanges heat with the battery cell 20 through a medium flowing inside, thereby regulating the temperature of the battery cell 20. The medium flowing inside the heat exchange tube can include, but is not limited to, liquid media (e.g., water and coolant), gaseous media, etc. A flat-mouthed tube can refer to a tube whose width is much greater than its thickness. For example, the width of the flat-mouthed tube can be the dimension in the second direction Y of Figures 4 and 5, and the thickness of the flat-mouthed tube can be the dimension in the third direction Z of Figures 4 and 5. For example, the cross-section of the flat-mouthed tube can be rectangular or racetrack-shaped.

[0111] In the above technical solution, by setting the heat exchanger 43 as a heat exchange tube, the structure of the heat exchange tube is simple and the cost can be reduced. By setting the heat exchange tube as a flat tube, the flat tube can have a smaller thickness and a larger flow rate, which can achieve a higher heat exchange effect. At the same time, the dimension occupied in the thickness direction of the vehicle floor 42 is relatively small, which can make the overall structure of the vehicle floor 42 and the heat exchanger 43 more compact and help save space.

[0112] In some embodiments of this application, referring to Figures 2, 3 and 7, the heat exchanger 43 includes a first heat exchange section 431 and a second heat exchange section 432. The second heat exchange section 432 is bent to form a U-shaped region 4320. The first heat exchange section 431 is bent and disposed within the U-shaped region 4320 and is bent and connected to the second heat exchange section 432. The groove 421 includes a first groove and a second groove. The second groove and the second heat exchange section 432 have the same shape. The second heat exchange section 432 is disposed within the second groove. The first groove and the first heat exchange section 431 have the same shape. The first heat exchange section 431 is disposed within the first groove.

[0113] Multiple battery cells 20 can be configured within the accommodating space 41a. The first heat exchange section 431 and the second heat exchange section 432 can be used for heat exchange with the multiple battery cells 20. The statement that "the second heat exchange section 432 is bent to form a U-shaped region 4320 (see the dotted line in Figure 7), and the first heat exchange section 431 is bent within the U-shaped region 4320" is intended to illustrate that the second heat exchange section 432 is located on the circumferential periphery of the first heat exchange section 431 and can be arranged on the three circumferential sides of the first heat exchange section 431. The second heat exchange section 432 can be arranged closer to the periphery of the cell group formed by the multiple battery cells 20 relative to the first heat exchange section 431.

[0114] The first heat exchange section 431 and the second heat exchange section 432 are connected by bending. That is, one end of the first heat exchange section 431 and one end of the second heat exchange section 432 are connected, and the connection position of the first heat exchange section 431 and the second heat exchange section 432 is a bent non-linear structure. For example, the connection position of the first heat exchange section 431 and the second heat exchange section 432 can be bent into an arc.

[0115] The first heat exchange section 431 and the second heat exchange section 432 are connected. Thus, one of the ends of the first heat exchange section 431 away from the second heat exchange section 432 and the ends of the second heat exchange section 432 away from the first heat exchange section 431 can be used as the liquid inlet and the other can be used as the liquid outlet. Therefore, when the heat exchanger 43 is performing heat exchange, the medium can flow from the first heat exchange section 431 to the second heat exchange section 432, or from the second heat exchange section 432 to the first heat exchange section 431.

[0116] Understandably, as the heat exchange medium flows through the heat exchanger 43, its temperature gradually changes, leading to a gradual decrease in heat exchange efficiency. For example, when the heat exchanger 43 cools the battery cell assembly, the heat from the battery cell 20 is gradually transferred to the heat exchange medium, causing the temperature of the heat exchange medium to gradually increase as it flows along the heat exchanger 43, resulting in a gradual decrease in the temperature difference between the medium and the battery cell 20 and a gradual reduction in heat exchange efficiency. Conversely, when the heat exchanger 43 heats the battery cell assembly, the heat in the heat exchange medium is gradually transferred to the battery cell 20, causing the temperature of the heat exchange medium to gradually decrease as it flows along the heat exchanger 43, resulting in a gradual decrease in the temperature difference between the medium and the battery cell 20 and a gradual reduction in heat exchange efficiency.

[0117] In this embodiment, when the heat exchanger 43 is cooling the unit assembly, the heat exchange fluid can flow from the first heat exchange section 431 to the second heat exchange section 432, but the heat exchange medium can also flow from the second heat exchange section 432 to the first heat exchange section 431. When the heat exchange medium flows from the first heat exchange section 431 to the second heat exchange section 432, the battery cells 20 in the middle of the battery pack (i.e., the inner battery cells 20 on the outer periphery) can be cooled first, and then the battery cells 20 at the periphery of the battery pack can be cooled. Since the heat dissipation of the battery cells 20 at the periphery of the battery pack is better than that of the inner battery cells 20, the lower temperature heat exchange fluid in the first heat exchange section 431 can better meet the heat dissipation requirements of the battery cells 20 in the middle of the battery pack. At the same time, since the battery cells 20 at the periphery can directly face the external environment for natural heat dissipation, when the temperature of the heat exchange fluid in the second heat exchange section 432 is slightly higher, it can still meet the heat dissipation requirements of the outer battery cells 20. Thus, the cooling effect obtained by the battery cells 20 at the periphery of the battery pack and the battery cells 20 in the middle of the battery pack is roughly the same, and the temperature of the battery cells 20 at the periphery of the battery pack and the battery cells 20 in the middle of the battery pack after cooling is more consistent, making the temperature distribution within the battery pack more uniform.

[0118] The statement that "the second groove and the second heat exchange section 432 have the same shape, the second heat exchange section 432 is located in the second groove, the first groove and the first heat exchange section 431 have the same shape, and the first heat exchange section 431 is located in the first groove" is intended to illustrate that the second groove can be formed into a U-shaped groove with the same shape as the second heat exchange section, thereby allowing the second heat exchange section 432 to be placed, and the first groove and the first heat exchange section 431 have the same shape, thereby allowing the first heat exchange section 431 to be placed.

[0119] In the above technical solution, when the heat exchanger 43 exchanges heat with the cell group formed by multiple battery cells 20, the U-shaped region 4320 formed by the outer second heat exchange section 432 can be aligned with the outer battery cells 20 of the cell group, and the first heat exchange section 431 within the U-shaped region 4320 can be aligned with the inner battery cells 20. This allows the heat exchanger 43 to compensate for the internal and external temperature difference caused by the heat exchange between the outer battery cells 20 and the environment, making the heat exchange effect of the outer battery cells 20 and the inner battery cells 20 of the cell group more consistent, improving the temperature uniformity of the cell group, and thus improving the service life of the cell group to a certain extent.

[0120] Optionally, the second heat exchange section 432 includes a first part 4321, a second part 4322, and a third part 4323. The first part 4321 extends along a first direction X of the vehicle floor 42. The second part 4322 and the third part 4323 are located at opposite ends of the first part 4321 in the first direction X and are connected to the first part 4321. The second part 4322 and the third part 4323 extend along a second direction Y of the vehicle floor 42. The first heat exchange section 431 includes a fourth part 4311 and a fifth part 4312. There are multiple fourth parts 4311, which extend along the first direction X and are sequentially spaced along the second direction Y. The multiple fourth parts 4311 are sequentially connected. One of the multiple fourth parts 4311 that is farther away from the first part 4321 is connected to the second part 4322. The fifth part 4312 is connected to the other of the multiple fourth parts 4311 that is closer to the first part 4321 and extends along the second direction Y.

[0121] In the above technical solution, the first heat exchange section 431 and the second heat exchange section 432 can form a serpentine structure, which can have a large heat exchange area and heat exchange range, which is beneficial to improving the heat exchange efficiency between the cell group formed by multiple battery cells 20.

[0122] Optionally, the first part 4321, the second part 4322, the third part 4323, the fourth part 4311, and the fifth part 4312 are heat exchange tubes. The first heat exchange section 431 and the second heat exchange section 432 using this scheme have a relatively simple structure and can reduce costs.

[0123] In some embodiments of this application, referring to FIG3, the accommodating space 41a is provided with a second opening, and the vehicle body 400 also includes a lower cover plate 46, which covers the battery accommodating portion 41 and closes the second opening.

[0124] The lower cover plate 46 can refer to a plate used to close the second opening. The lower cover plate 46 can be, but is not limited to, a metal plate, a plastic plate, and a composite material plate. For example, the lower cover plate 46 can be an aluminum alloy plate.

[0125] In the above technical solution, since the top of the accommodating space 41a has a first opening, and a second opening is further provided at the bottom of the accommodating space 41a, it is more convenient to install the battery cell 20 into the battery accommodating part 41. Moreover, since the vehicle body floor 42 is installed on top of the battery accommodating part 41, it is relatively difficult to disassemble the vehicle body floor 42 after the vehicle is assembled. Therefore, during subsequent maintenance, the battery cell 20 can be repaired or replaced by removing the lower cover plate 46, which can further reduce maintenance costs.

[0126] In some embodiments of this application, referring to FIG4, the vehicle body 400 also includes a cover piece 47, which is laid on the vehicle body floor 42.

[0127] The covering 47 can refer to a material or component that covers the vehicle floor 42. Optionally, the covering 47 can be a flexible component, specifically, flexible components can include, but are not limited to, carpets, etc.

[0128] In the above technical solution, the cover piece 47 can cover the vehicle floor 42 to play a protective role, reducing the probability of the top of the vehicle floor 42 being damaged by collision or impact. Moreover, since the vehicle floor 42 is generally made of metal, it has high strength and rigidity. The cover piece 47 can effectively prevent the driver and passengers from directly contacting the vehicle floor 42, thereby improving the riding experience of the driver and passengers.

[0129] According to an embodiment of this application, the vehicle body 400 includes: a battery housing 41, a vehicle floor 42, a cooling pipe, a lower cover 46, a heat insulation pad, and a battery cell 20.

[0130] The battery housing 41 is provided with a housing space 41a, the top of which has a first opening and the bottom has a second opening.

[0131] The vehicle floor 42 is located on top of the battery housing 41 and closes the first opening. A groove 421 is provided on the top of the vehicle floor 42. The cold pipe is constructed as a "serpentine cold pipe," and the groove 421 is constructed as a "serpentine groove," allowing the cold pipe to be adaptively arranged within the groove 421. The cold pipe is fixed within the groove 421 by adhesive, and the top of the cold pipe does not extend beyond the groove 421. A heat insulation pad covers the vehicle floor 42 and is located above the heat exchanger 43, reducing heat loss from the cold pipe.

[0132] The lower cover 46 is located at the bottom of the battery housing 41 and closes the second opening. Thus, the lower cover 46, the vehicle floor 42, and the housing space 41a together form a housing space for accommodating the battery cell 20.

[0133] The battery cells 20 are arranged in the accommodating space 41a and are placed upside down. The battery cells 20 are arranged in multiple rows, with multiple battery cells 20 in each row.

[0134] It is understood that the vehicle body 400 of this application embodiment has high performance and low cost, and can also improve the space utilization rate of the accommodating space 41a in the vehicle body 400 for placing the battery cell 20, which is beneficial to improving the battery energy density.

[0135] Secondly, embodiments of this application also provide a vehicle 1000, which includes the vehicle body 400 described above.

[0136] In the above technical solution, since the battery cell 20 in the vehicle body 400 is located within the receiving space 41a of the battery receiving part 41, the vehicle body 400 can have a higher battery energy density, thereby improving the electric range of the vehicle 1000. Moreover, the number of parts in the vehicle body 400 is relatively small and the weight is relatively light, which helps to reduce the manufacturing cost of the vehicle 1000 and further improve the electric range of the entire vehicle.

[0137] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0138] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A vehicle body, wherein, include: A battery housing, wherein the battery housing has a housing space and the housing space has a first opening; A battery cell, wherein the battery cell is disposed within the accommodating space; The vehicle body floor covers the battery housing and closes the first opening, and the vehicle body floor has a groove. A heat exchanger is disposed in the groove and is used to exchange heat with the battery cell.

2. The vehicle body according to claim 1, wherein, The groove is located on the outside of the receiving space.

3. The vehicle body according to claim 2, wherein, The thickness of the heat exchanger is less than or equal to the depth of the groove.

4. The vehicle body according to claim 3, wherein, The vehicle body also includes: A heat insulation element, the heat insulation element covering the vehicle body floor, wherein the orthographic projection of the groove on the vehicle body floor is located within the orthographic projection of the heat insulation element on the vehicle body floor.

5. The vehicle body according to any one of claims 2 to 4, wherein, The vehicle floor has a protrusion that protrudes into the accommodating space, and the protrusion has a groove formed on the surface of the contour surface outside the accommodating space.

6. The vehicle body according to claim 5, wherein, The vehicle body floor is stamped with the aforementioned protrusion.

7. The vehicle body according to claim 5, wherein, The battery cell includes: The outer shell has multiple shell walls, one of which is a first shell wall. The first shell wall is attached to the protrusion, and a filler is provided between the first shell wall and the vehicle floor.

8. The vehicle body according to claim 7, wherein, The filler includes at least one of a thermally conductive portion and an adhesive portion.

9. The vehicle body according to claim 7 or 8, wherein, The outer shell is provided with a pressure relief section, which is located on the remaining shell walls except for the first shell wall.

10. The vehicle body according to claim 9, wherein, The pressure relief section is located on the shell wall at the bottom of the outer shell.

11. The vehicle body according to any one of claims 1 to 10, wherein, The heat exchanger and the groove are bonded together.

12. The vehicle body according to any one of claims 1 to 11, wherein, The heat exchanger is a heat exchange tube, and the heat exchange tube is constructed as a flat-mouthed tube.

13. The vehicle body according to any one of claims 1 to 12, wherein, The heat exchanger includes a first heat exchange section and a second heat exchange section. The second heat exchange section is bent to form a U-shaped region. The first heat exchange section is bent within the U-shaped region and is bent and connected to the second heat exchange section. The groove includes a first groove and a second groove. The second groove and the second heat exchange section have the same shape. The second heat exchange section is disposed in the second groove. The first groove and the first heat exchange section have the same shape. The first heat exchange section is disposed in the first groove.

14. The vehicle body according to any one of claims 1 to 13, wherein, The accommodating space has a second opening, and the second opening is located at the bottom of the accommodating space relative to the first opening. The vehicle body also includes a lower cover plate, which covers the battery accommodating portion and closes the second opening.

15. A vehicle, wherein, The vehicle body includes any one of claims 1 to 14.

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