Battery pack mounting device and vehicle

Abstract

The present disclosure provides a battery pack mounting device and a vehicle, and relates to the technical field of vehicles. The battery pack mounting device comprises a rear floor assembly and a battery pack. The rear floor assembly comprises an assembly plate surface, and the battery pack is connected to the lower part of the rear floor assembly and corresponds to the position of the assembly plate surface. The outer side of the battery pack is provided with a lug, and the battery pack is connected to the rear floor assembly through the lug. The battery pack mounting device of the present disclosure connects the battery pack to the lower part of the rear floor assembly, which can maximize the use of the space of the lower part of the rear floor assembly of the vehicle, avoid the risks of the chassis of the vehicle being lifted, wading and scratching, and does not need to occupy the trunk volume, which is conducive to ensuring the vehicle body strength, the vehicle passability, the vehicle wading capacity and the rear collision safety.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of vehicles, in particular to a battery pack mounting device and a vehicle. BACKGROUND

[0002] Plug-in hybrid electric vehicle (PHEV) is a new energy vehicle between pure electric vehicle and fuel vehicle, which has engine, transmission, drive system, oil circuit, oil tank of traditional vehicle, battery, electric motor and control circuit of pure electric vehicle, and has a charging interface with large battery capacity. PHEV combines the advantages of pure electric vehicle (EV) and hybrid electric vehicle (HEV), and can realize pure electric and zero emission driving, and increase the cruising range through hybrid mode.

[0003] However, the battery pack arrangement scheme of the plug-in hybrid electric vehicle in the related art is generally arranged under the front floor, in the middle channel and in the trunk, and for a sedan with low chassis, arranging the battery pack under the front floor or in the middle channel has a small ground clearance, and there is a risk of chassis grounding, wading and scratching, and arranging the battery pack in the trunk occupies too much trunk volume, causing great complaints from customers. SUMMARY

[0004] The present disclosure provides a battery pack mounting device and a vehicle, which can solve the problems in the battery pack arrangement scheme in the related art.

[0005] The technical solution is as follows:

[0006] On the one hand, a battery pack mounting device is provided, which comprises a rear floor assembly and a battery pack.

[0007] The rear floor assembly comprises an assembly plate surface, and the battery pack is connected to the lower part of the rear floor assembly and corresponds to the position of the assembly plate surface.

[0008] The outer side of the battery pack is provided with a lug, and the battery pack is connected to the rear floor assembly through the lug.

[0009] In some embodiments, the number of lugs is multiple, and the lugs are arranged at the rear of the battery pack and / or the two sides of the battery pack.

[0010] The front part of the battery pack is provided with a controller interface, a slow charging plug-in interface, a fast charging plug-in interface and a cooling water plug-in interface.

[0011] In some embodiments, the rear floor assembly comprises a rear floor body, a front cross beam, a rear cross beam, a first longitudinal beam and a second longitudinal beam.

[0012] The assembly panel is located in the middle of the rear floor body. The front crossbeam, the first longitudinal beam, the rear crossbeam and the second longitudinal beam are respectively connected to the rear floor body and are connected end to end to form a rectangular load-bearing frame.

[0013] The front crossbeam corresponds to the front of the battery pack; the rear crossbeam corresponds to the rear of the battery pack and is connected by at least one of the hooks.

[0014] The first longitudinal beam and the second longitudinal beam correspond to the two sides of the battery pack, respectively, and are connected by at least one of the hooks.

[0015] In some embodiments, the rear floor body is provided with at least one through hole for passing through a cooling water pipe and / or a slow charging cable, the cooling water pipe and the slow charging cable being respectively connected to the battery pack.

[0016] In some embodiments, the battery pack mounting device further includes an on-board charging unit located above the rear floor assembly, the at least one through hole extending to the upper surface of the rear floor assembly, and the slow charging cable connecting the on-board charging unit and the battery pack respectively through the at least one through hole;

[0017] The on-board charging unit is used to provide the battery pack with a slow charging mode using household AC voltage.

[0018] In some embodiments, one of the first longitudinal beam and the second longitudinal beam is used to arrange the exhaust assembly;

[0019] The first or second longitudinal beam arranging the exhaust assembly is provided with a clearance bracket. The clearance bracket is connected between the side of the battery pack and the first or second longitudinal beam. The clearance bracket is used to connect the battery pack to the first or second longitudinal beam while avoiding the exhaust assembly.

[0020] In some embodiments, the rear floor assembly further includes a first connecting plate and a second connecting plate;

[0021] The first connecting plate is located at both ends of the front crossbeam, and the first connecting plate is connected to the front crossbeam, as well as one of the first longitudinal beam and the second longitudinal beam;

[0022] The second connecting plate is located at both ends of the rear crossbeam, and the second connecting plate is connected to the rear crossbeam, as well as one of the first longitudinal beam and the second longitudinal beam.

[0023] In some embodiments, the battery pack mounting device further includes a lower guard plate that covers the lower part of the front of the battery pack.

[0024] In some embodiments, the battery has a square structure, including an upper cover, a lower casing, and a double-layer cell module. The upper cover and the lower casing are closed together, and the double-layer cell module is located within the receiving cavity formed by the upper cover and the lower casing.

[0025] The hanging ear is located on the outer side of the lower housing.

[0026] On the other hand, a vehicle is provided that employs the battery pack mounting device described in this disclosure.

[0027] The beneficial effects of the technical solution provided in this disclosure include at least the following:

[0028] The battery pack mounting device disclosed herein connects the battery pack to the lower part of the rear floor assembly, which can make maximum use of the space under the vehicle's rear floor assembly, avoid the risk of the vehicle's chassis bottoming out, wading through water and scraping, and does not occupy the trunk volume, which helps to ensure the vehicle body strength, vehicle passability, vehicle wading ability and rear collision safety. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of the battery pack mounting device provided in the embodiments of this disclosure;

[0031] Figure 2 This is a schematic diagram of the structure of the battery pack according to an embodiment of this disclosure;

[0032] Figure 3 This is a schematic diagram of the structure of the rear floor assembly provided in an embodiment of this disclosure;

[0033] Figure 4 This is a schematic diagram of the structure of the rear floor body provided in an embodiment of this disclosure;

[0034] Figure 5 This is a schematic diagram of the battery pack mounting device provided in an embodiment of the present disclosure from another perspective;

[0035] Figure 6 This is a schematic diagram of the structure of a battery pack mounting device provided in another embodiment of the present disclosure;

[0036] Figure 7 This is a schematic diagram of the internal structure of the battery pack provided in an embodiment of this disclosure.

[0037] The reference numerals in the figure are respectively:

[0038] 1. Rear floor assembly;

[0039] 10. Assembly panel; 101. Reinforcing rib structure;

[0040] 11. Rear floor body; 110. Through hole; 12. Front crossbeam; 13. Rear crossbeam; 14. First longitudinal beam; 15. Second longitudinal beam; 16. Clearance bracket; 17. First connecting plate; 18. Second connecting plate; 19. Wheel cover sheet metal;

[0041] 2. Battery pack;

[0042] 201. Front; 202. Rear; 203. Side;

[0043] 21. Ear hook; 22. Controller interface; 23. Slow charging connector; 24. Fast charging connector; 25. Cooling water connector; 26. Top cover; 27. Bottom casing; 28. Dual-layer battery module; 29. ​​Low-voltage signal connector; 210. Fast charging cable;

[0044] 3. On-board charging unit;

[0045] 4. Exhaust assembly;

[0046] 5. Lower guard plate;

[0047] 6. Mid-floor assembly;

[0048] 7. Charging stand;

[0049] 8. Fuel tank assembly;

[0050] 9. Torsion beam assembly. Detailed Implementation

[0051] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0052] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the appendix. Figure 5 ,6 The indicated orientation or positional relationship Figure 5 , 6 The orientation shown is the actual orientation of this disclosure in a vehicle application scenario. This is only for the convenience of describing this disclosure and for simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure.

[0053] Unless otherwise defined, all technical terms used in the embodiments of this disclosure have the same meaning as commonly understood by one of ordinary skill in the art.

[0054] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0055] Figure 1 This is a schematic diagram of the structure of the battery pack 2 mounting device provided in the embodiments of this disclosure; Figure 2 This is a schematic diagram of the structure of battery pack 2 according to an embodiment of this disclosure; Figure 3 This is a schematic diagram of the structure of the rear floor assembly 1 provided in an embodiment of this disclosure; Figure 4 This is a schematic diagram of the structure of the rear floor body 11 provided in an embodiment of this disclosure.

[0056] On the one hand, combined with Figures 1-4 As shown, this embodiment provides a battery pack 2 mounting device, which includes a rear floor assembly 1 and a battery pack 2.

[0057] The rear floor assembly 1 includes an assembly panel 10, and a battery pack 2 is connected to the lower part of the rear floor assembly 1 and corresponds to the position of the assembly panel 10. The battery pack 2 has a hanging ear 21 on its outer side, and the battery pack 2 is connected to the rear floor assembly through the hanging ear 21.

[0058] The battery pack 2 installation device in this embodiment connects the battery pack 2 to the lower part of the rear floor assembly 1, which can make the most of the space under the rear floor assembly 1 of the vehicle, avoid the risk of the vehicle chassis bottoming out, wading through water and scratches, and does not occupy the trunk volume, which helps to ensure the vehicle body strength, vehicle passability, vehicle wading ability and rear collision safety.

[0059] In some possible implementations, the mounting plate 10 is a large flat area that can match the top surface of the battery pack 2 and provide sufficient space for the battery pack 2.

[0060] Optionally, the top of the battery pack 2 has a 10mm gap with the mounting plate 10 to ensure the assembly requirements of the battery pack 2 and to allow for the placement of cushioning and heat insulation materials, thereby improving the safety and reliability of the battery pack 2.

[0061] In the prior art, the rear floor assembly 1 typically has a spare tire well to accommodate the vehicle's spare tire. Alternatively, in this embodiment, the mounting plate surface 10 is formed by smoothing out the spare tire well area.

[0062] In some other possible implementations, the assembly panel 10 is provided with a plurality of reinforcing rib structures 101 to enhance the rigidity and load-bearing strength of the individual floor piece. Exemplarily, the reinforcing rib structures 101 are formed using a stamping process.

[0063] Optionally, multiple reinforcing rib structures 101 are arranged in parallel on the assembly plate 10, and the extension direction of the reinforcing ribs is consistent with the front-rear direction of the vehicle.

[0064] Among other possible implementations, see reference Figure 6 The lowest point of the battery pack 2 is higher than the lowest point of the torsion beam assembly 9 of the vehicle, and / or the lowest point of the battery pack 2 is higher than the lowest point of the exhaust assembly 4 of the vehicle, thereby ensuring that the battery pack 2 has sufficient safe ground clearance to ensure the driving safety of the vehicle.

[0065] Combination Figure 2 As shown, in some embodiments, there are multiple ear loops 21, which are respectively arranged on the rear 202 and / or the two sides 203 of the battery pack 2; the front 201 of the battery pack 2 is provided with a controller interface 22, a slow charging interface 23, a fast charging interface 24 and a cooling water interface 25.

[0066] For example, the ear loop 21 is arranged at the rear 202 of the battery pack 2, or the ear loop 21 is arranged at both sides 203 of the battery pack 2, or the ear loop 21 is arranged at both the rear 202 and both sides 203 of the battery pack 2.

[0067] Among them, the two sides 203 of the battery pack 2 refer to the side portions of the battery pack 2 that are parallel to the front-rear direction of the vehicle.

[0068] In this embodiment, the battery pack 2 is connected to the rear floor assembly 1 through the lugs 21 distributed at the rear 202 and the side 203, which ensures the connection reliability of the battery pack 2, maximizes the use of the space under the rear floor of the car, ensures the body strength, vehicle passability, vehicle wading ability and rear collision safety, and at the same time ensures the feasibility of the layout of other components such as the exhaust assembly 4, cooling water pipes and high-voltage cables.

[0069] In some possible implementations, the ear 21 has an L-shaped structure, wherein the long side of the ear 21 is connected to the side of the battery pack 2 (including the side of the rear part 202 and the side of the side part 203 of the battery pack 2), for example, by welding. The short side of the ear 21 is provided with a fastening hole, which can be fixedly connected to the rear floor assembly 1 by fasteners.

[0070] For example, the battery pack 2 has 8 hooks 21, which also serve as fixing points for connecting the battery pack 2 to the rear floor assembly 1. This ensures that the battery pack 2 meets the user's usage scenarios and fixation reliability under different working conditions, while also providing strong protection for the rear collision safety of the battery pack 2.

[0071] In another example, the battery pack 2 can also be connected to other body structures of the vehicle, such as body longitudinal beams, via the lugs 21.

[0072] In this embodiment, the front part 201 of the battery pack 2 is used to arrange various interfaces, which conforms to the overall layout of the battery pack 2 in the vehicle. The vehicle's motor controller, motor and other structures are all located in the front middle part 201 of the vehicle. Arranging various interfaces in the front part 201 of the battery pack 2 helps to reduce the difficulty of arranging and routing various pipelines, reduce the routing length, and reduce the cost and assembly difficulty of the vehicle.

[0073] In some possible implementations, the controller interface 22 is used to connect to the motor controller, providing high-voltage DC power from the battery pack 2 to the front motor 201 and the controller, thereby driving the motor to operate.

[0074] The slow charging port 23 connects to the slow charging cable to provide the battery pack 2 with a slow charging AC 220V charging mode, which is the preferred charging mode for home use.

[0075] The fast charging port 24 is connected to the fast charging cable 210. Its main function is to provide the battery pack 2 with a high-voltage DC 750A charging mode, which is mostly the fast charging mode provided in highway service areas or large shopping malls.

[0076] The cooling water connector 25 is connected to the cooling water pipe to provide heating for the battery pack 2 in winter, so that its discharge efficiency can be optimized. In addition, it is also necessary to provide cooling for the battery pack 2 to avoid damage to the internal structure of the battery pack 2 and extend its life.

[0077] Optionally, the controller interface 22, the slow charging interface 23, and the fast charging interface 24 are high-voltage interfaces.

[0078] In some other possible implementations, the front part 201 of the battery pack 2 is also provided with a low-voltage signal interface 29, which serves to provide an instrument display function for the internal information and current status of the battery pack 2, so that the user can understand the status of the battery pack 2 in a timely manner.

[0079] Combination Figure 3 As shown, in some embodiments, the rear floor assembly 1 includes a rear floor body 11, a front crossbeam 12, a rear crossbeam 13, a first longitudinal beam 14, and a second longitudinal beam 15.

[0080] The assembly panel 10 is located in the middle of the rear floor body 11. The front crossbeam 12, the first longitudinal beam 14, the rear crossbeam 13, and the second longitudinal beam 15 are respectively connected to the rear floor body 11 and connected end to end to form a rectangular load-bearing frame.

[0081] The front crossbeam 12 corresponds to the front part 201 of the battery pack 2; the rear crossbeam 13 corresponds to the rear part 202 of the battery pack 2 and is connected by at least one hanging ear 21; the first longitudinal beam 14 and the second longitudinal beam 15 correspond to the two sides 203 of the battery pack 2 respectively and are connected by at least one hanging ear 21 respectively.

[0082] In this embodiment, the rear floor assembly 1 utilizes the front crossbeam 12, the first longitudinal beam 14, the rear crossbeam 13, and the second longitudinal beam 15 to form a stable rectangular load-bearing frame. This not only improves the structural strength of the rear floor assembly 1 but also creates an internal rectangular area to accommodate the battery pack 2.

[0083] The rectangular load-bearing frame is perforated and welded with nuts, and is welded to the rear floor body 11. A welded reinforcing bracket is used for transition on the other side of the rear floor body 11.

[0084] The battery pack 2 is connected to the rear crossbeam 13, the first longitudinal beam 14, and the second longitudinal beam 15, which have higher structural strength, via the lugs 21, ensuring the connection reliability of the battery pack 2.

[0085] In some possible implementations, a positioning pin structure is arranged at the diagonal position of the rectangular load-bearing frame formed by the front crossbeam 12, the first longitudinal beam 14, the rear crossbeam 13, and the second longitudinal beam 15. The battery pack 2 is positioned and installed using this positioning pin structure, ensuring that the battery pack 2 is installed quickly and accurately.

[0086] In some other possible implementations, the first longitudinal beam 14 and the second longitudinal beam 15 are overlapped and welded together with the two longitudinal beams of the middle floor assembly 6 to ensure a reliable connection between the middle floor assembly 6 and the rear floor assembly 1.

[0087] Combination Figure 3 As shown, in some embodiments, the rear floor body 11 is provided with at least one through hole 110 for passing through a cooling water pipe and / or a slow charging cable. The cooling water pipe is connected to the cooling water connector 25 of the battery pack 2, and the slow charging cable is connected to the slow charging connector 23 of the battery pack 2.

[0088] Figure 5 This is a schematic diagram of the battery pack 2 mounting device provided in an embodiment of this disclosure from another perspective.

[0089] Combination Figure 5As shown, in some embodiments, the battery pack 2 mounting device further includes an on-board charging unit 3, which is located above the rear floor assembly 1. At least one through-hole 110 extends to the upper surface of the rear floor assembly 1, and a slow charging cable connects the on-board charging unit 3 and the slow charging port 23 of the battery pack 2 through the at least one through-hole 110. The on-board charging unit 3 is used to provide the battery pack 2 with a slow charging mode using household AC voltage.

[0090] The on-board charging assembly above the rear floor assembly 1 in this embodiment mainly provides a slow-charging high-voltage charging mode for the battery pack 2. It generally uses household AC 220V voltage, which is convenient for users to charge in underground garages at night. It can be fully charged in 6-8 hours, which is convenient and practical. At the same time, this on-board charging assembly also has a built-in 220V inverter discharge function, which can meet the needs of short-distance road trips or outdoor barbecues on weekends. This function has great market foresight and competitiveness at the current stage and has received a good market response.

[0091] Combination Figure 1 , 3 As shown, in some embodiments, one of the first longitudinal beam 14 and the second longitudinal beam 15 is used to arrange the exhaust assembly 4.

[0092] The first longitudinal beam 14 or the second longitudinal beam 15 of the exhaust assembly 4 is provided with a clearance bracket 16. The clearance bracket 16 is connected between the side 203 of the battery pack 2 and the first longitudinal beam 14 or the second longitudinal beam 15. The clearance bracket 16 is used to connect the battery pack 2 with the first longitudinal beam 14 or the second longitudinal beam 15 while avoiding the exhaust assembly 4.

[0093] Since the battery pack 2 is located at the bottom of the rear floor assembly 1 in this embodiment, it overlaps with the position of the exhaust assembly 4. In order to prevent interference between the battery pack 2 and the exhaust assembly 4, a clearance bracket 16 is used to provide lateral compensation for the installation position of the battery pack 2.

[0094] refer to Figure 1 , 3 As shown, the exhaust assembly 4 is located at the position of the second longitudinal beam 15. The battery pack 2 and the exhaust assembly 4 need to maintain a safe distance. Therefore, the battery pack 2 is shifted to the left, so that the battery pack 2 cannot be directly connected to the second longitudinal beam 15.

[0095] An obstacle avoidance bracket 16 is welded to the second longitudinal beam 15. The obstacle avoidance bracket 16 is a lateral extension of the second longitudinal beam 15 and can be connected to the lug 21 of the side 203 of the battery pack 2, thereby fixing the battery pack 2 to the second longitudinal beam 15.

[0096] refer to Figure 1 , 3 As shown, the middle floor assembly 6 also houses the fuel tank assembly 8, which is located in front of the battery pack 2.

[0097] Combination Figure 3 As shown, in some embodiments, the rear floor assembly 1 further includes a first connecting plate 17 and a second connecting plate 18; the first connecting plate 17 is located at both ends of the front crossbeam 12 in the lateral direction, and the first connecting plate 17 is connected to the front crossbeam 12 and the first longitudinal beam 14 or the second longitudinal beam 15 respectively.

[0098] The second connecting plate 18 is located at both ends of the rear crossbeam 13 in the lateral direction. The second connecting plate 18 is connected to the rear crossbeam 13 and the first longitudinal beam 14 or the second longitudinal beam 15 respectively.

[0099] Using the first connecting plate 17 as a connecting reinforcement between the front crossbeam 12 and the first longitudinal beam 14 and the second longitudinal beam 15 is beneficial to improving the structural strength of the rear floor assembly 1.

[0100] Similarly, using the second connecting plate 18 as a connecting reinforcement between the rear crossbeam 13 and the first longitudinal beam 14 and the second longitudinal beam 15 is beneficial to improving the structural strength of the rear floor assembly 1.

[0101] The frame structure, consisting of the front crossbeam 12, the rear crossbeam 13, and two longitudinal beams, provides reliable horizontal protection for the battery pack 2, especially for the rear of the vehicle.

[0102] Figure 6 This is a schematic diagram of the structure of a battery pack 2 mounting device provided in another embodiment of the present disclosure.

[0103] Combination Figure 6 As shown, in some embodiments, the battery pack 2 mounting device further includes a lower guard plate 5, which covers the lower part of the front portion 201 of the battery pack 2.

[0104] The lower guard plate 5 covers the lower part of the front 201 of the battery pack 2, which can protect the high-voltage wires and water pipes connected to the front 201 of the battery pack 2 from the impact of stones. It can also create a streamlined structure in the front 201 area of ​​the battery pack 2, which can reduce the vehicle's wind resistance and make a positive contribution to reducing fuel consumption and electricity consumption.

[0105] Combination Figure 2 , 7 As shown, in some embodiments, the battery pack 2 includes a square structure, including an upper cover 26, a lower body 27 and a double-layer cell module 28. The upper cover 26 and the lower body 27 are closed together, and the double-layer cell module 28 is located in the cavity formed by the upper cover 26 and the lower body 27; the hanging ear 21 is located on the outer side of the lower body 27.

[0106] This embodiment uses a square battery pack 2, which fits the space of the rear floor assembly 1 and maximizes the use of the space under the rear floor of the car. The dual-layer cell module 28 helps to increase the capacity of the battery pack 2 and improve the vehicle's range.

[0107] Combination Figure 6 As shown, in some embodiments, the wheel arch sheet metal 19 on one side of the rear floor assembly 1 also includes a charging base 7. The charging base 7 is connected to the fast charging interface 24 of the battery pack 2 via a fast charging cable 210. Its main function is to provide users with high-voltage fast charging. It can normally charge to 80% in half an hour. It is used more frequently when users are in high-speed servers or large shopping malls. This function is also very competitive at the current stage. It can solve users' charging time anxiety.

[0108] The charging dock 7 is also connected to the vehicle charging unit 3 via a slow charging cable, and then to the slow charging port 23 to provide slow charging with household AC voltage for the user.

[0109] After various tests, vehicles using the battery pack installation device disclosed herein all meet the performance requirements. The WLTC combined fuel consumption is only 4.3L / 100km, the pure electric range is 120km, and the combined range is 1200km. There are no reports of battery pack chassis scratches or water wading issues. The market response is good. This kind of cubic battery bottom-mounted arrangement structure is stable and reliable, and the platform has good scalability.

[0110] On the other hand, this embodiment provides a vehicle that uses the battery pack mounting device disclosed herein.

[0111] The vehicle in this embodiment uses the battery pack mounting device disclosed herein, and has all the beneficial technical effects of all embodiments herein.

[0112] It should be noted that in this article, "several" and "at least one" refer to one or more, while "multiple" and "at least two" refer to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0113] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" 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 mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0114] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0115] In the description of this specification, the references to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the embodiments or examples that are included in at least one embodiment or example of this disclosure.

[0116] The above description is merely an embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A battery pack mounting device characterized by comprising: The battery pack mounting device comprises a rear floor assembly (1) and a battery pack (2); The rear floor assembly (1) comprises an assembly plate surface (10), the battery pack (2) is connected to the lower part of the rear floor assembly (1) and corresponds to the position of the assembly plate surface (10); The battery pack (2) is provided with a lug (21) on the outer side, and the battery pack (2) is connected to the rear floor assembly (1) through the lug (21); The assembly plate surface (10) is a flat area on the bottom surface of the rear floor assembly (1), which matches the top surface of the battery pack (2), and the assembly plate surface (10) and the top surface of the battery pack (2) have a gap for arranging cushioning and heat insulation materials; The rear floor assembly (1) comprises a rear floor body (11), a front cross beam (12), a rear cross beam (13), a first longitudinal beam (14) and a second longitudinal beam (15); The assembly plate surface (10) is located in the middle of the rear floor body (11), the front cross beam (12), the first longitudinal beam (14), the rear cross beam (13) and the second longitudinal beam (15) are respectively connected to the rear floor body (11) and connected end to end to form a rectangular load-bearing frame; The front cross beam (12) corresponds to the front part (201) of the battery pack (2); the rear cross beam (13) corresponds to the rear part (202) of the battery pack (2) and is connected through at least one lug (21); The first longitudinal beam (14) and the second longitudinal beam (15) respectively correspond to the two side parts (203) of the battery pack (2) and are respectively connected through at least one lug (21); One of the first longitudinal beam (14) and the second longitudinal beam (15) is used to arrange an exhaust assembly (4); The first longitudinal beam (14) or the second longitudinal beam (15) on which the exhaust assembly (4) is arranged is provided with an avoidance support (16), the avoidance support (16) is connected between the side part (203) of the battery pack (2) and the first longitudinal beam (14) or the second longitudinal beam (15), and the avoidance support (16) is used to realize the connection between the battery pack (2) and the first longitudinal beam (14) or the second longitudinal beam (15) while avoiding the exhaust assembly (4).

2. The battery pack mounting device according to claim 1, characterized by The number of lugs (21) is multiple, and the lugs (21) are respectively arranged at the rear part (202) of the battery pack (2) and / or the two side parts (203) of the battery pack (2); The front part (201) of the battery pack (2) is provided with a controller interface (22), a slow charging plug-in interface (23), a fast charging plug-in interface (24) and a cooling water plug-in interface (25).

3. The battery pack mounting device according to claim 1, characterized by The rear floor body (11) is provided with at least one through hole (110) for passing through a cooling water pipe and / or a slow charging line, and the cooling water pipe and the slow charging line are respectively connected to the battery pack (2).

4. The battery pack mounting device according to claim 3, characterized by The battery pack mounting device further comprises a vehicle-mounted charging unit (3) located above the rear floor assembly (1), the at least one through hole (110) penetrates to the upper surface of the rear floor assembly (1), and the slow charging line is connected with the vehicle-mounted charging unit (3) and the battery pack (2) respectively through the at least one through hole (110). The vehicle-mounted charging unit (3) is used to provide a slow charging mode of household alternating voltage for the battery pack (2).

5. The battery pack mounting device of claim 1, wherein The rear floor assembly (1) further comprises a first connecting plate (17) and a second connecting plate (18). The first connecting plate (17) is located at the transverse ends of the front cross beam (12), and is connected with the front cross beam (12) and one of the first longitudinal beam (14) and the second longitudinal beam (15) respectively. The second connecting plate (18) is located at the transverse ends of the rear cross beam (13), and is connected with the rear cross beam (13) and one of the first longitudinal beam (14) and the second longitudinal beam (15) respectively.

6. The battery pack mounting device according to claim 2, characterized by The battery pack mounting device further comprises a lower guard plate (5) covering the front portion (201) of the battery pack (2).

7. The battery pack mounting device according to any one of claims 1-6, characterized by, The battery pack (2) has a square structure, comprising an upper box cover (26), a lower box body (27) and a double-layer battery cell module (28), the upper box cover (26) and the lower box body (27) are overlapped, and the double-layer battery cell module (28) is located in the accommodating cavity formed by the upper box cover (26) and the lower box body (27). The hanging ear (21) is located on the outer side of the lower box body (27).

8. A vehicle characterized by comprising: The battery pack mounting device of any one of claims 1-7 is adopted.

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