Chassis assembly and vehicle

Abstract

The present invention relates to the technical field of battery modules for vehicles, and discloses a chassis assembly and a vehicle. The chassis assembly comprises: a chassis, which is provided with a plurality of mounting positions for mounting battery modules; a quick-release device, through which the battery module is mounted on the mounting position, and the quick-release device is controlled by a control system; and a voltage electrical connection assembly, which is electrically connected to the battery module by quick plugging and is controlled by the control system. The problem of rapid disassembly and maintenance of a single module and damage or even fire of the battery module during a collision of the vehicle is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery modules of electric vehicles, and in particular to a chassis assembly and a vehicle. Background Art

[0002] At present, most battery systems and electric vehicles on the market are grouped in the form of battery cells-modules-P battery packs-frames. Some vehicles omit the module level in the grouping process and directly use the battery cell-battery pack-frame grouping. However, no matter which of the above grouping forms is used, since the battery pack level exists independently and is fixedly connected to the frame, electric vehicles under this grouping form have the following defects and shortcomings.

[0003] 1. Before repairing the vehicle battery system, the battery pack must be removed from the frame and then disassembled internally, which makes the repair process complicated; 2. When a vehicle collides during driving, in addition to the deformation of the frame itself causing stress on the module or battery cell, the compression of the battery pack by the frame and the deformation of the battery pack's own components will also cause secondary damage to the module or battery cell. Especially when electric vehicles need to be equipped with large amounts of electricity, the damage to the entire vehicle from side collisions and side column collisions will increase significantly.

[0004] Therefore, there is an urgent need for a chassis assembly and a vehicle to solve the above technical problems. Summary of the invention

[0005] The purpose of the present invention is to provide a chassis assembly and a vehicle, which solves the problem of rapid disassembly and maintenance of a single module and the problem of damage to the battery module during a vehicle collision.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] In one aspect, a chassis assembly is provided, comprising:

[0008] A chassis having a plurality of mounting positions for mounting battery modules;

[0009] A quick-release device, through which the battery module is installed on the installation position, and the quick-release device is controlled by a control system;

[0010] A voltage electrical connection component is electrically connected to the battery module quick plug and is controlled by the control system.

[0011] As a preferred technical solution of a chassis assembly, the voltage electrical connection assembly includes:

[0012] A high-voltage electrical connection assembly, which is electrically connected to the battery module quick plug and is controlled by the control system;

[0013] A low-voltage electrical connection assembly is electrically connected to the battery module quick-plug and is controlled by the control system.

[0014] As a preferred technical solution of a chassis assembly, the high-voltage electrical connection assembly includes:

[0015] First quick-connect fitting;

[0016] A high-voltage electrical connection module, which is electrically connected to the battery module via the first quick-connect connector;

[0017] The first quick-connect connector is electrically connected to the control system, and the control system is used to control the first quick-connect connector.

[0018] As a preferred technical solution of a chassis assembly, the low-voltage electrical connection assembly includes:

[0019] Second quick-connect fitting;

[0020] A low-voltage electrical connection module, which is electrically connected to the battery module via the second quick-connect connector;

[0021] The second quick-connect connector is electrically connected to the control system, and the control system is used to control the second quick-connect connector.

[0022] As a preferred technical solution of a chassis assembly, it also includes a thermal management module and a third quick-plug connector, and the thermal management module is electrically connected to the battery module through the third quick-plug connector.

[0023] As a preferred technical solution for a chassis assembly, the chassis includes a basic frame, the basic frame includes at least two frame longitudinal beams arranged in parallel and at least two frame cross beams arranged perpendicular to the frame longitudinal beams, the frame cross beams are fixed to the frame longitudinal beams, the battery module is fixed to the basic frame by the quick release device, and the low-voltage electrical connection module is installed on the basic frame.

[0024] As a preferred technical solution for a chassis assembly, there are two frame longitudinal beams, both ends of the frame cross beam are respectively fixed to the two frame longitudinal beams, the mounting position is formed between two adjacent frame cross beams, and a row of the mounting positions is formed on the basic frame.

[0025] As a preferred technical solution for a chassis assembly, there are three frame longitudinal beams, and the three frame longitudinal beams are arranged in sequence at intervals. The frame cross beam is arranged between two adjacent frame longitudinal beams, and both ends are respectively fixed to the frame longitudinal beams. The mounting position is formed between two adjacent frame cross beams, and two rows of the mounting positions are formed on the basic frame.

[0026] As a preferred technical solution for a chassis assembly, it is characterized in that the battery module is matched with the mounting position, and the four corners or any two opposite sides of the battery module are fixed to the basic frame through the quick-release device.

[0027] As a preferred technical solution for a chassis assembly, the chassis also includes a lower body floor, which is fixed to the basic frame and covers the top of the battery module, and the high-voltage electrical connection module is arranged on the lower body floor.

[0028] As a preferred technical solution of a chassis assembly, a plurality of high-voltage cables are arranged on the high-voltage electrical connection module, and the first quick-connect connector is arranged at one end of the high-voltage cable away from the high-voltage electrical connection module.

[0029] As a preferred technical solution of a chassis assembly, a plurality of low-voltage cables are arranged on the low-voltage electrical connection module, and the second quick-connect connector is arranged at one end of the low-voltage cable away from the low-voltage electrical connection module.

[0030] As a preferred technical solution of a chassis assembly, a temperature detection component is provided on the battery module, and the temperature detection component is electrically connected to the control system.

[0031] As a preferred technical solution for a chassis assembly, it also includes a fire extinguishing device, which is arranged on the basic frame and electrically connected to the control system, and the fire extinguishing device is used to extinguish a fire in the battery module.

[0032] As a preferred technical solution of a chassis assembly, the quick release device includes:

[0033] A rotating assembly, the rotating assembly comprising a rotating hook rotatably arranged on the chassis, the rotating hook having a locking position and a loosening position;

[0034] The hook assembly comprises a hook groove, wherein the hook groove is arranged on the battery module, and when the battery module is in a preset installation position on the chassis and the swivel hook is rotated to the locking position, the swivel hook is engaged in the hook groove; when the battery module is in a preset installation position on the chassis and the swivel hook is rotated to the loosening position, the swivel hook is separated from the hook groove.

[0035] As a preferred technical solution of a chassis assembly, the battery module is provided with a connecting flange, and the connecting flange is provided with an insertion hole;

[0036] The first quick-connect connector comprises:

[0037] An inserting column, the first end of which passes through the inserting hole, the inserting column is provided with a cavity, and the outer peripheral wall of the first end of the inserting column is provided with a through hole connected with the cavity;

[0038] An elastic expansion component, the through hole is provided with the elastic expansion component, the elastic expansion component can be partially exposed on the outer peripheral wall of the plug column and pressed against the lower surface of the connecting flange;

[0039] A limiting flange is arranged on the outer peripheral wall of the plug column, and the lower end surface of the limiting flange is pressed against the upper surface of the connecting flange.

[0040] As a preferred technical solution of a chassis assembly, the elastic expansion assembly includes:

[0041] An elastic sealing member, which is sealingly arranged on the through hole;

[0042] a steel ball, which is accommodated in the through hole and located outside the elastic sealing member;

[0043] When the first quick-connect connector is inserted into the battery module, the steel ball can partially extend out of the outer peripheral wall of the plug post so that the steel ball can be pressed against the lower surface of the connecting flange.

[0044] In another aspect, a vehicle is provided, comprising a chassis assembly as described above.

[0045] The beneficial effects of the present invention are as follows: when an accident occurs to the vehicle, the control system detects that the frame is about to be damaged through the collision sensor of the vehicle, etc. If the vehicle speed is fast, the vehicle speed is first controlled to be reduced to below 30km / h, and then the control of the voltage electrical connection assembly and the quick release device is started to separate the voltage electrical connection assembly from the battery module, and the quick release device releases the fixation of the battery module, so that the battery module is disconnected from the chassis and the voltage electrical connection assembly, and the battery module falls off, avoiding damage to the battery module due to the impending frame damage. The battery module is installed on the installation position through the quick release device. When the battery module needs to be replaced or repaired, only the corresponding module can be removed without disassembling the entire battery pack.

[0046] The battery module is set on the chassis to solve the problem of rapid disassembly and maintenance of a single module; the problem of battery module damage or even fire during a vehicle collision; and the same battery group platform can be used to complete the power demand layout of different vehicles. Since the battery module is directly set on the chassis, there will be more space in the vehicle layout for the crossbeams and longitudinal beams of the frame, as well as the layout of various protective structures, which significantly increases the collision energy absorption area and significantly improves the stress or self-strain of the module or battery after a collision.

[0047] In addition, when the vehicle experiences thermal runaway while driving or in a stationary parking state, the control system detects that the battery module has thermal runaway through the temperature detection element in the battery module, and the control system initiates control of the first quick plug connector, the second quick plug connector, the third quick plug connector and the quick release device, so that the first quick plug connector, the second quick plug connector and the third quick plug connector are separated from the battery module, and the quick release device releases the fixation of the battery module, so that the battery module is disconnected from the basic frame, the low-voltage electrical connection module, the high-voltage electrical connection module and the thermal management module, and the battery module with thermal runaway fixed on the basic frame is quickly detached, so as to avoid the impending thermal runaway behavior from spreading to all battery modules and causing damage to the entire vehicle.

[0048] When an unexpected situation occurs in the vehicle that may damage the battery module, the control system will make a prediction on the battery module and notify the driver to slow down and stop in advance, or the after-sales platform will guide the control system to remove the problematic battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 The structure of the chassis assembly provided by the present invention is schematically shown in FIG. Figure 1 ;

[0050] Figure 2 The structure of the chassis assembly provided by the present invention is schematically shown in FIG. Figure 2 ;

[0051] Figure 3 The partial structure diagram of the chassis assembly provided by the present invention is shown in FIG. Figure 1 ;

[0052] Figure 4 The partial structure diagram of the chassis assembly provided by the present invention is shown in FIG. Figure 2 ;

[0053] Figure 5 The partial structure diagram of the chassis assembly provided by the present invention is shown in FIG. Figure 3 ;

[0054] Figure 6 It is a structural schematic diagram of the quick release device provided by the present invention;

[0055] Figure 7 It is a structural schematic diagram of the quick release device provided by the present invention when the swivel hook is in a locked position;

[0056] Figure 8 yes Figure 7 A partial enlarged view of the middle A;

[0057] Fig. 9 It is a structural schematic diagram of the rotating assembly provided by the present invention;

[0058] Fig.10It is a structural schematic diagram of the quick release device provided by the present invention when the rotating hook is in a loosened position;

[0059] Fig.11 It is a partial structural schematic diagram of the first quick-connect connector provided by the present invention being inserted into a battery module;

[0060] Fig.12 It is a structural schematic diagram of a first quick-connect connector provided by the present invention;

[0061] Fig.13 It is a structural exploded view of a first quick-connect connector provided by the present invention;

[0062] Fig.14 It is a cross-sectional view of a first quick-connect connector provided by the present invention.

[0063] In the figure:

[0064] 1. chassis; 11. basic frame; 111. frame longitudinal beam; 112. frame cross beam; 113. mounting seat; 12. lower body floor;

[0065] 2. quick release device; 21. rotating assembly; 211. rotating hook; 2111. tooth groove; 212. rotating shaft; 2121. tooth; 2122. first connecting platform; 213. linkage shaft;

[0066] 3. Battery module; 31. Hook slot; 32. Bump; 33. Connecting flange;

[0067] 4. first quick-connect connector; 41. plug post; 411. chamber; 412. through hole; 413. oil delivery channel; 42. elastic sealing element; 43. steel ball; 44. limiting flange;

[0068] 5. High-voltage electrical connection module; 51. High-voltage cable; 6. Second quick-connect connector; 7. Low-voltage electrical connection module; 71. Low-voltage cable; 8. Third quick-connect connector; 91. Thermal management control water pipe. DETAILED DESCRIPTION

[0069] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0070] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0071] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0072] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0073] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0075] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0076] like Figure 1-5 As shown, this embodiment discloses a chassis assembly, which includes a chassis 1, a quick-release device 2, a battery module 3, a voltage electrical connection component, a thermal management module, a third quick-plug connector 8 and a control system.

[0077] A plurality of mounting positions are provided on the chassis 1; specifically, the chassis 1 includes a base frame 11, the base frame 11 includes at least two frame longitudinal beams 111 arranged in parallel and at intervals, and at least two frame cross beams 112 arranged perpendicular to the frame longitudinal beams 111, and the frame cross beams 112 are fixed to the frame longitudinal beams 111. Preferably, in this embodiment, there are two frame longitudinal beams 111, the two frame longitudinal beams 111 are arranged at intervals, the two ends of the frame cross beam 112 are respectively fixed to the two frame longitudinal beams 111, a mounting position is formed between two adjacent frame cross beams 112, and a row of mounting positions is formed on the base frame 11. In other embodiments, there may be three frame longitudinal beams 111, which are arranged at intervals in sequence, a frame cross beam 112 is arranged between two adjacent frame longitudinal beams 111, and both ends are respectively fixed to the frame longitudinal beams 111, an installation position is formed between two adjacent frame cross beams 112, and two rows of installation positions are formed on the basic frame 11.

[0078] The above-mentioned installation position is formed between two adjacent frame cross beams 112, that is, the installation position is a rectangular area enclosed by two adjacent frame longitudinal beams 111 and two adjacent frame cross beams 112, and the shape of the battery module 3 is matched with the installation position, that is, the plane cross-sectional shape of the battery module 3 is a rectangle, and each installation position is provided with a battery module 3. In other embodiments, the number of battery modules 3 and the installation positions can also be selected according to actual needs, and the number of frame cross beams 112 and frame longitudinal beams 111 is not further limited here.

[0079] The battery module 3 is fixed to the mounting position of the base frame 11 through the quick release device 2. The four corners, any two opposite sides, or the four sides of the battery module 3 are fixed to the base frame 11 through the quick release device 2. Preferably, the sides of the two long sides of the battery module 3 in this embodiment are respectively fixed to the frame crossbeams 112 on both sides of the battery module 3 through multiple quick release devices 2.

[0080] The quick release device 2 is electrically connected to the control system, and the control system can control the quick release device 2 to release the fixation of the battery module 3 so that the battery module 3 can fall off the base frame 11. The specific control method of the control system on the quick release device 2 is the existing technology and will not be repeated here.

[0081] The voltage electrical connection assembly is electrically connected to the battery module 3 by a quick plug and is controlled by the control system. The voltage electrical connection assembly includes a high voltage electrical connection assembly and a low voltage electrical connection assembly.

[0082] The high-voltage electrical connection assembly is electrically connected to the battery module 3 by quick plugging, and the high-voltage electrical connection assembly is electrically connected to the control system, and the control system is used to control the high-voltage electrical connection assembly to fall off from the battery module 3. The high-voltage electrical connection assembly includes a first quick plug connector 4 and a high-voltage electrical connection module 5. The high-voltage electrical connection module 5 is electrically connected to the battery module 3 through the first quick plug connector 4. Specifically, a plurality of high-voltage cables 51 are provided on the high-voltage electrical connection module 5, and the number of high-voltage cables 51 is not less than the number of battery modules 3. If the number of high-voltage cables 51 is more than the number of battery modules 3, the redundant high-voltage cables 51 are reserved for backup. The end of the high-voltage cable 51 away from the high-voltage electrical connection module 5 is connected to the first quick plug connector 4, and the first quick plug connector 4 is plugged into the high-voltage interface of the battery module 3. The first quick plug connector 4 is an electrical quick plug connector that allows high voltage electricity to pass through. The first quick plug connector 4 is electrically connected to the control system, and the control system can control the first quick plug connector 4 to fall off from the battery module 3. The specific control method of the control system on the first quick plug connector 4 is the prior art and will not be repeated here.

[0083] The low-voltage electrical connection assembly is electrically connected to the battery module 3 by quick plugging; the low-voltage electrical connection assembly is electrically connected to the control system, and the control system is used to control the low-voltage electrical connection assembly to fall off from the battery module 3. The low-voltage electrical connection assembly includes a second quick plug connector 6 and a low-voltage electrical connection module 7. The low-voltage electrical connection module 7 is installed on the base frame 11 and is located at one end of the base frame 11. The low-voltage electrical connection module 7 is electrically connected to the battery module 3 through the second quick plug connector 6. Specifically, a plurality of low-voltage cables 71 are provided on the low-voltage electrical connection module 7. The number of low-voltage cables 71 is not less than the number of battery modules 3. If the number of low-voltage cables 71 is more than the number of battery modules 3, the redundant low-voltage cables 71 are reserved for backup. The end of the low-voltage cable 71 away from the low-voltage electrical connection module 7 is connected to the second quick plug connector 6, and the second quick plug connector 6 is plugged into the low-voltage interface of the battery module 3. The second quick plug connector 6 is an electrical quick plug connector that allows low-voltage electricity to pass through. The second quick-plug connector 6 is electrically connected to the control system, and the control system can control the second quick-plug connector 6 to fall off from the battery module 3. The specific control method of the control system on the second quick-plug connector 6 is the existing technology and will not be repeated here.

[0084] The thermal management module is electrically connected to the battery module 3 through the third quick-plug connector 8. The thermal management module is provided with two thermal management control water pipes 91 for circulating cooling medium. The thermal management control water pipes 91 are provided with multiple third quick-plug connectors 8. The third quick-plug connector 8 is inserted into the thermal management interface of the battery module 3. The thermal management module provides cooling medium to the battery module 3 through one of the thermal management control water pipes 91 to cool the battery module 3. The cooling medium after cooling the battery module 3 returns to the thermal management module through another thermal management control water pipe 91. The third quick-plug connector 8 is a water pipe quick-plug connector that allows the cooling medium to pass through. The third quick-plug connector 8 is electrically connected to the control system, and the control system can control the third quick-plug connector 8 to fall off the battery module 3. The specific control method of the control system on the third quick-plug connector 8 is the existing technology and will not be repeated here.

[0085] The control system is fixed on the chassis 1 and provides control support for the chassis components. The control system includes all functions of control components such as BMS, BDU, PDU, etc., and is connected to the after-sales service platform to reduce switching and improve energy efficiency. The signal is sent to the after-sales service platform mainly to facilitate the after-sales platform to monitor the status of the battery module 3.

[0086] Optionally, the chassis 1 further includes a lower body floor 12, which is fixed to the base frame 11 and covers the battery module 3. The high-voltage electrical connection module 5 is disposed on the lower body floor 12. In this embodiment, it is disposed on the lower surface of the lower body floor 12. In other embodiments, it can also be disposed on the upper surface of the lower body floor 12. The low-voltage cable 71, the high-voltage cable 51 and the thermal management control water pipe 91 are all located on the lower surface of the lower body floor 12. In other embodiments, they can also be located on the upper surface of the lower body floor 12.

[0087] The battery module 3 includes a cooling plate, a battery cell, a side fixing plate, an edge fixing plate and a high-voltage copper busbar. Moreover, the battery module 3 has an IP67 or higher seal, and has a strong sealing performance. Under normal operation, the risk of battery fluid leakage can be effectively avoided. A temperature detection component is provided on the battery module 3, and a temperature sensor is preferably used in this embodiment. The temperature detection component is electrically connected to the control system, and the specific electrical connection method and control method between the two are prior art and will not be repeated here. The temperature detection component is used to detect the temperature of the battery module 3, and transmit the detected information to the control system to monitor the temperature condition of the battery module 3.

[0088] Optionally, a fire extinguishing device is also included, which is arranged on the basic frame 11 and electrically connected to the control system. When a fire occurs in the battery module 3, the control system can control the fire extinguishing device to extinguish the fire in the battery module 3 to prevent the fire from spreading.

[0089] When an accident occurs to the vehicle, the control system detects through the collision sensor of the vehicle that the chassis 1 is about to be damaged. If the vehicle speed is fast, the vehicle speed is first controlled to drop below 30 km / h, and then the control of the first quick plug connector 4, the second quick plug connector 6, the third quick plug connector 8 and the quick release device 2 is started to disengage the first quick plug connector 4, the second quick plug connector 6 and the third quick plug connector 8 from the battery module 3. The quick release device 2 releases the fixation of the battery module 3, so that the battery module 3 is disconnected from the basic frame 11, the low-voltage electrical connection module 7, the high-voltage electrical connection module 5 and the thermal management module, so as to avoid damage to the battery module 3 due to the impending damage to the chassis 1.

[0090] When the vehicle experiences thermal runaway during driving or in a stationary parking state, the control system detects that the battery module 3 has thermal runaway through the temperature detection element in the battery module 3, and the control system starts controlling the first quick-plug connector 4, the second quick-plug connector 6, the third quick-plug connector 8 and the quick-release device 2, so that the first quick-plug connector 4, the second quick-plug connector 6 and the third quick-plug connector 8 are separated from the battery module 3, and the quick-release device 2 releases the fixation of the battery module 3, so that the battery module 3 is disconnected from the basic frame 11, the low-voltage electrical connection module 7, the high-voltage electrical connection module 5 and the thermal management module, and the battery module 3 that is fixed on the basic frame 11 and has thermal runaway is quickly detached, so as to avoid the impending thermal runaway behavior from spreading to all battery modules 3 and causing damage to the entire vehicle.

[0091] The car has a bypass system and a high and low voltage system. After the faulty battery module 3 falls off, the bypass system of the car maintains the operation of the thermal management system and the high and low voltage system of the car, and continues to maintain the remaining battery modules 3 to work. After that, the integrated control vehicle continues to drive using the remaining battery modules 3. The bypass system maintains the thermal management system and the high and low voltage system of the car, and mainly solves two problems. One is to maintain the remaining battery modules 3 to continue working; the other is to ensure that the series and parallel connection of the vehicle circuit remains intact after the faulty battery module 3 falls off, without affecting the operation of the entire vehicle.

[0092] When an unexpected situation occurs in the vehicle that damages the battery module 3, the control system predicts the battery module 3 and notifies the driver to slow down and stop in advance. The after-sales platform guides the control system to remove the problematic battery module 3.

[0093] The arrangement of the battery module 3 on the chassis 1 solves the problem that thermal runaway of a single battery module 3 will damage the entire battery pack; it also solves the problem of rapid disassembly and assembly of a single battery module 3 for repair; and the problem that the battery module 3 is damaged and catches fire during a collision of the vehicle; furthermore, the same battery module 3 platform can be used to complete the power demand arrangement of different vehicles.

[0094] Specifically, Figure 6-Figure 10As shown, the quick release device 2 includes a hook assembly and a rotating assembly 21, and a mounting seat 113 is provided on the chassis 1. In this embodiment, the mounting seat 113 is specifically provided on the frame crossbeam 112, and of course, it can also be provided on the frame longitudinal beam 111, or the mounting seat 113 is provided on both the frame longitudinal beam 111 and the frame crossbeam 112.

[0095] The rotating assembly 21 includes a rotating hook 211 rotatably arranged on the mounting seat 113. The hook assembly includes a hook slot 31, and the hook slot 31 is arranged on the battery module 3. The rotating hook 211 has a locking position and a loosening position. When the battery module 3 is in a preset installation position on the vehicle, when the rotating hook 211 rotates to the locking position, the rotating hook 211 is engaged in the hook slot 31; when the rotating hook 211 rotates to the loosening position, the rotating hook 211 is separated from the hook slot 31. The quick release device 2 provided in this embodiment has a simple structure. The battery module 3 is locked and fixed by the rotating hook 211 engaged in the hook slot 31, and will not be loosened due to the shaking of the vehicle during operation. Due to the gravity of the battery module 3 itself, there is no need to add other structures for limiting the position of the rotating hook 211, and the stability of the battery module 3 fixed on the chassis 1 is improved, the operation time is shortened, the time for locking the battery module 3 is reduced, and the efficiency of disassembling and assembling the battery module 3 is improved.

[0096] Specifically, Figure 7 As shown, when the battery module 3 is locked, the battery module 3 is in a preset installation position, the rotating hook 211 of the quick release device 2 is in a locked position, and the rotating hook 211 is engaged in the hook groove 31 to lock the battery module 3. Fig.10 As shown, when the battery module 3 is disassembled, the swivel hook 211 of the quick-release device 2 is in a loose position, the swivel hook 211 escapes from the hook slot 31, and the battery module 3 falls downward due to its own gravity, and the disassembly is automatically completed.

[0097] In this embodiment, the surface of the swivel hook 211 is coated with a damping material. When the battery module 3 is locked, the swivel hook 211 can be interference-engaged in the hook groove 31, and the friction between the swivel hook 211 and the hook groove 31 is increased, thereby improving the stability of the engagement; when the battery module 3 is disassembled, the swivel hook 211 is not prevented from escaping from the hook groove 31, thereby improving the practicality of the quick-release device 2.

[0098] In this embodiment, two opposite sides of the battery module 3 are locked on the chassis 1 , and the chassis 1 is provided with a mounting seat 113 on each of the two sides of the battery module 3 , and a rotating hook 211 is provided on each mounting seat 113 .

[0099] In this embodiment, hook grooves 31 are provided on two opposite sides of the battery module 3. When the battery module 3 is in a preset installation position of the vehicle, the rotating hooks 211 on the chassis 1 are engaged with the hook grooves 31 on both sides of the battery module 3.

[0100] Preferably, at least two protrusions 32 are respectively provided on both sides of the battery module 3, the hook groove 31 is opened on the upper surface of the protrusion 32, and the position and number of the rotating hooks 211 correspond to the protrusions 32. Providing at least two protrusions 32 can increase the number of connection positions between the rotating hooks 211 and the battery module 3, thereby increasing the stability of the battery module 3 after being fixed.

[0101] In this embodiment, two protrusions 32 are respectively disposed on two sides of the battery module 3 , and each protrusion 32 is provided with a hook groove 31 .

[0102] In this embodiment, the hook groove 31 extends along the rotation axis direction of the rotating hook 211 to both sides of the protrusion 32 and is connected with the end surfaces of both sides of the protrusion 32, thereby increasing the contact area between the hook groove 31 and the rotating hook 211 and improving the stability of locking the battery module 3.

[0103] Preferably, if Figure 8 As shown, the rotating assembly 21 further includes a rotating shaft 212, and the rotating shaft 212 is used to rotate to drive the rotating hook 211 to rotate. One end of the rotating hook 211 is connected to one end of the rotating shaft 212, and the other end of the rotating hook 211 is arranged in an arc shape and is used to be engaged in the hook groove 31. And the other end of the rotating shaft 212 is rotatably connected to one side of the mounting seat 113.

[0104] In this embodiment, the swivel hook 211 is coaxial with the rotating shaft 212 and the rotating axis is arranged in the horizontal direction. A first connecting platform 2122 is convexly provided on the circumferential surface of the rotating shaft 212 facing the swivel hook 211. One end of the swivel hook 211 is fixed on the first connecting platform 2122, and the other end of the swivel hook 211 is spaced apart from the rotating shaft 212 and can be engaged in the hook groove 31. The first connecting platform 2122 is convexly provided on the rotating shaft 212, and one end of the swivel hook 211 is connected to the first connecting platform 2122, which is conducive to the other end of the swivel hook 211 being spaced apart from the rotating shaft 212, so that the other end of the swivel hook 211 is conveniently engaged in the hook groove 31.

[0105] In this embodiment, the swivel hook 211 is configured to be in an arc shape, and in order to ensure the stability of locking the battery module 3, the cross-sectional shape of the hook groove 31 is in an arc shape that matches the swivel hook 211. In order to ensure the strength of the swivel hook 211 and the stability of locking, the axial width and radial thickness of the swivel hook 211 can be adjusted according to the weight of the battery module 3, and the slot width of the hook groove 31 in the axial direction of the swivel hook 211 and the groove cross-sectional thickness in the radial direction of the swivel hook 211 are also adjusted accordingly.

[0106] Preferably, the inner circumferential surface of the rotating hook 211 facing the rotating shaft 212 is provided with a tooth groove 2111, and the first connecting platform 2122 is provided with teeth 2121, which are engaged in the tooth groove 2111. It is ensured that the rotating shaft 212 can drive the rotating hook 211 to rotate synchronously when rotating, thereby improving the locking stability of the battery module 3.

[0107] In this embodiment, a second connecting platform is protruded on the arc surface of the rotating hook 211 facing the rotating shaft 212, and the second connecting platform is connected to the first connecting platform 2122 on the rotating shaft 212. The second connecting platform is provided with a tooth groove 2111, and the teeth 2121 on the first connecting platform 2122 are engaged in the tooth groove 2111.

[0108] Furthermore, the rotating assembly 21 also includes a driving motor. The output shaft of the driving motor is connected to the rotating shaft 212, and can control the rotating shaft 212 to rotate automatically. When locking or disassembling the battery module 3, the rotating hook 211 can automatically engage or disengage from the hook slot 31, thereby improving the automation and convenience of the quick release device 2.

[0109] Preferably, if Fig. 9 As shown, the rotating assembly 21 also includes a linkage shaft 213. The two ends of the linkage shaft 213 are connected to the rotating shafts 212 whose two adjacent rotation axes coincide with each other, which can ensure that multiple rotating shafts 212 rotate synchronously, improve the accuracy of locking the battery module 3, and enable a driving motor to drive at least two rotating shafts 212 to rotate synchronously at the same time, thereby reducing the number of driving motors required and reducing costs. The driving motor is electrically connected to the control system, and the control system controls the driving motor to drive the linkage shaft 213 to rotate, thereby driving the rotating shaft 212 to rotate, so that the rotating hook 211 rotates.

[0110] In this embodiment, the two rotating shafts 212 on the chassis 1 on the same side of the battery module 3 are coaxially arranged, so a linkage shaft 213 is connected between the two rotating shafts 212 on the same side of the battery module 3, and one of the rotating shafts 212 is connected to the output shaft of the drive motor.

[0111] Preferably, the mounting seat 113 is configured to be plate-shaped, one end of the mounting seat 113 is integrally connected to the chassis 1, and the other end is flush with the end of the rotating hook 211 and is in an arc shape. The other end of the rotating shaft 212 is rotatably connected to one side of the mounting seat 113. When the battery module 3 is locked, that is, when the battery module 3 is in a preset installation position on the vehicle, the lower surface of the mounting seat 113 is in contact with the upper surface of the protrusion 32. When the mounting seat 113 contacts the grooved surface of the battery module 3, it can be determined that the battery module 3 is in the locked position, which reduces the time for positioning the battery module 3 and further improves the efficiency of disassembling and assembling the battery module 3.

[0112] In this embodiment, in the axial direction of the rotating hook 211 , the slot width of the hook slot 31 is not less than the sum of the thicknesses of the rotating hook 211 and the plate-shaped mounting seat 113 .

[0113] In other embodiments, the size of the other end of the mounting seat 113 should ensure that the movement of the battery module 3 is not interfered with when the battery module 3 moves toward the rotating hook 211, and is not limited here.

[0114] The control system is used to control the drive motor to drive the swivel hook 211 to rotate through a preset angle. When the battery module 3 needs to be locked and fixed and the battery module 3 is in a preset installation position on the chassis 1, the control system is used to control the drive motor to drive the swivel hook 211 to rotate counterclockwise or clockwise to the locking position, so that the swivel hook 211 can be engaged in the hook slot 31 to lock the battery module 3; when the battery module 3 needs to be disassembled, the control system is used to control the drive motor to drive the swivel hook 211 to rotate in the opposite direction to the loose position, so that the swivel hook 211 can be disengaged from the hook slot 31, and the battery falls downward due to its own gravity, completing the disassembly of the battery module 3. The setting of the control system further improves the automation and ease of use of the locking system.

[0115] In other embodiments, a pressure sensor may also be provided on the bottom surface of the mounting base 113. When the battery module 3 moves to a preset mounting position on the chassis 1, the bottom surface of the mounting base 113 is relatively close to the slot surface of the hook slot 31 of the battery module 3. When the pressure applied to the pressure sensor exceeds the preset maximum pressure, the control system is also used to automatically start the drive motor to drive the swivel hook 211 to rotate to the locking position, so that the swivel hook 211 can be engaged in the hook slot 31, thereby locking the battery module 3.

[0116] In other embodiments, the quick-release device 2 may also be other quick-release mechanisms, as long as it can realize the rapid installation of the battery module 3 on the installation position, and the control system controls it to quickly release the fixation of the battery module 3, so that the battery module 3 can fall off the chassis 1, and no other specific limitations are made here.

[0117] Specifically, Figure 11-14 As shown, the battery module 3 is provided with a connecting flange 33 , and the connecting flange 33 is provided with an inserting hole.

[0118] The first quick-insert connector 4 includes a plug post 41, an elastic expansion assembly and a limiting flange 44. The first end of the plug post 41 passes through the insertion hole, and a chamber 411 is provided on the plug post 41. A through hole 412 connected to the chamber 411 is provided on the outer peripheral wall of the first end of the plug post 41. An elastic expansion assembly is provided on the through hole 412, and the elastic expansion assembly can be partially exposed on the outer peripheral wall of the plug post 41 and pressed against the lower surface of the connecting flange 33. Specifically, the elastic expansion assembly includes an elastic seal 42 and a steel ball 43. The elastic seal 42 is sealingly provided on the through hole 412, specifically at the position where the through hole 412 is connected to the chamber 411. The steel ball 43 is accommodated in the through hole 412 and is located on the outside of the elastic seal 42. The steel ball 43 can be completely located in the through hole 412, and can also be partially extended out and exposed to the outer peripheral wall of the plug post 41 under the action of the elastic seal 42. When the first quick-connect connector 4 is inserted into the battery module 3, the steel ball 43 can partially extend out of the outer peripheral wall of the plug post 41, so that the steel ball 43 can press against the lower surface of the connecting flange 33. The limiting flange 44 is arranged on the outer peripheral wall of the plug post 41, and the lower end surface of the limiting flange 44 presses against the upper surface of the connecting flange 33. The steel ball 43 and the limiting flange 44 cooperate to fix the first plug 4 on the battery module 3.

[0119] More specifically, in this embodiment, if Figure 12-14 As shown, there are five elastic expansion components, namely, five elastic seals 42 and five steel balls 43. In other embodiments, the elastic expansion components may be one, two, three, four or six or even more. The limiting flange 44 is a circular ring structure. The limiting flange 44 is convexly arranged on the outer peripheral wall of the plug column 41. It can be fixed by welding or integrally formed with the plug 41. In this embodiment, the limiting flange 44 and the plug column 41 are integrally formed. At the same time, in order to enable the steel ball 43 to move in the corresponding through hole 412 and partially extend out of the outer peripheral wall of the plug column 41, in this embodiment, the diameter of the steel ball 43 is larger than the aperture of the end of the through hole 412 where the elastic seal 42 is not sealed. In order to ensure that the chamber 411 of the plug 411 is always in a sealed state and prevent the pressure in the chamber 411 from leaking out through the through hole 412, the elastic seal 42 of this embodiment is made of elastic rubber material, and its shape is approximately spherical shell. The shell opening end of the elastic seal 42 is fixed by interference fit on one end of the through hole 412 connecting the chamber 411, and a receiving space for accommodating the steel ball 43 is formed between the shell opening of the elastic seal 42 and the through hole 412. The steel ball 43 can be movably assembled in the receiving space. Since the steel ball 43 cannot be expanded and fall off from the through hole 412, the shell opening end of the elastic seal 42 is always fixed by interference fit on one end of the chamber 411 connecting the through hole 412, so that the pressure in the chamber 411 cannot leak out through the through hole 412.

[0120] An oil delivery channel 413 is provided on the plug post 41 along the axial direction of the plug post 41. A shunt pipe (not shown in the figure) is connected to the top of the plug post 41, and the shunt pipe is connected to the oil pump. The hydraulic oil can be delivered to the oil delivery channel 413 through the oil pump and the shunt pipe, so that the hydraulic oil is introduced into the chamber 411, so that the pressure in the chamber 411 increases, and the elastic seal 42 pushes the steel ball 43 to move outward, so that the steel ball 43 presses against the lower surface of the connecting flange 33. Under the action of the hydraulic oil, the steel ball 43 will not move inward, so that the steel ball 43 and the limiting flange 44 can cooperate to fix the first quick-connect connector 4 on the connecting flange 33.

[0121] When the pressure of the hydraulic oil on the elastic seal 42 is removed, although the steel ball 43 can rest against the lower surface of the connecting flange 33 under the elastic support of the elastic seal 42, since the elastic seal 42 can be elastically deformed and the expansion pressure support in the chamber 411 is lost, when the end of the steel ball 43 extending out of the outer peripheral wall of the plug 41 is squeezed by the lower surface of the connecting flange 33, the elastic seal 42 will be deformed and the steel ball 43 will retract into the through hole 412, and will no longer be able to generate support force on the lower surface of the connecting flange 33. The battery module 3 will automatically fall off under the action of gravity, thereby realizing the rapid disassembly of the battery module 3.

[0122] The oil pump is controlled by a control system, which controls the oil pump to deliver hydraulic oil into the chamber 411 to increase the pressure in the chamber 411 and cause the elastic seal 42 to push the steel ball 43 outward so that the steel ball 43 presses against the lower surface of the connecting flange 33 .

[0123] In other embodiments, a high-pressure cylinder electrically connected to the control system may be used to deliver high-pressure gas to the chamber 411 through the oil delivery channel 413, and the elastic sealing member 42 may be driven by the high-pressure gas to push the steel ball 43 outward, so that the steel ball 43 is pressed against the lower surface of the connecting flange 33. Since the principles and control circuits of hydraulic drive and pneumatic drive are prior art, they will not be described in detail.

[0124] Furthermore, in order to effectively maintain the expansion pressure in the chamber 411 of each plug 41, the present embodiment also includes a two-position two-way electric control valve (not shown in the figure). Among them, the inlet of the two-position two-way electric control valve is connected to the outlet of the oil pump, and the outlet of the two-position two-way electric control valve is connected to the inlet of the shunt pipe. When it is necessary to deliver high-pressure hydraulic oil to each chamber 411 and then perform expansion connection, the two-position two-way electric control valve is first in an open state and remains in an open state for a certain period of time, such as 3-5 seconds; when the oil pump delivers high-pressure oil to each chamber 411, and the steel ball 43 is pressed against the hole wall of one end of each through hole 412 where the elastic seal 42 is not provided and cannot move, the two-position two-way electric control valve will automatically close when the closing time is reached, thereby locking the pressure in each chamber 411 and playing a role in maintaining pressure. At this time, the oil pump also stops working, thereby completing the locking work of the battery module 3 on the chassis 1 through the first plug connector 4. When pressure relief is required to disassemble the battery module 3, the two-position two-way electric control valve is opened and the oil pump does not work. At this time, the pressure in each chamber 411 can be relieved along the path of the shunt pipe, the oil pump, and the oil tank. The first quick-connect connector 4 is no longer tightly connected to the battery module 3, and the battery module 3 automatically detaches under the action of gravity, thereby completing the disassembly work.

[0125] The first quick-plug connector 4 mentioned above in this embodiment is only an exemplary structure. In other embodiments, the first quick-plug connector 4 can also be other quick-plug structures, as long as it can withstand high voltage current and can be quickly detached from the battery module 3 under the control of the control system. No other specific and restrictive descriptions will be given here.

[0126] The structure of the second quick-plug connector 6 can be similar to that of the first quick-plug connector 4, or it can be other quick-plug structures, as long as it can withstand the pressure current and can be quickly detached from the battery module 3 under the control of the control system. No other specific and restrictive details will be given here.

[0127] This embodiment also discloses a vehicle, which includes the above-mentioned chassis assembly, and the battery module 3 of the chassis assembly provides electrical energy for the operation of the vehicle.

[0128] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A chassis assembly, It is characterized in that include: A chassis (1) having a plurality of mounting positions for mounting a battery module (3); A quick-release device (2), wherein the battery module (3) is installed on the installation position via the quick-release device (2), and the quick-release device (2) is controlled by a control system; A voltage electrical connection component, which is electrically connected to the battery module (3) by quick plugging and is controlled by the control system; The voltage electrical connection assembly comprises: a high-voltage electrical connection assembly, which is electrically connected to the battery module (3) by quick plugging, and is controlled by the control system so that the high-voltage electrical connection assembly is detached from the battery module (3); A low-voltage electrical connection component is electrically connected to the battery module (3) by quick plugging, and is controlled by the control system so that the low-voltage electrical connection component is detached from the battery module (3).

2. The chassis assembly according to claim 1, It is characterized in that The high voltage electrical connection assembly comprises: A first quick-connect connector (4); A high-voltage electrical connection module (5), which is electrically connected to the battery module (3) via the first quick-connect connector (4); The first quick-connect connector (4) is electrically connected to the control system, and the control system is used to control the first quick-connect connector (4).

3. The chassis assembly according to claim 2, It is characterized in that The low voltage electrical connection assembly comprises: A second quick-connect connector (6); A low-voltage electrical connection module (7), which is electrically connected to the battery module (3) via the second quick-connect connector (6); The second quick-connect connector (6) is electrically connected to the control system, and the control system is used to control the second quick-connect connector (6).

4. The chassis assembly according to claim 3, It is characterized in that It also comprises a thermal management module and a third quick-plug connector (8), wherein the thermal management module is electrically connected to the battery module (3) via the third quick-plug connector (8).

5. The chassis assembly according to claim 3, It is characterized in that The chassis (1) comprises a basic frame (11), the basic frame (11) comprising at least two frame longitudinal beams (111) arranged in parallel and at least two frame cross beams (112) arranged perpendicular to the frame longitudinal beams (111), the frame cross beams (112) being fixed to the frame longitudinal beams (111), the battery module (3) being fixed to the basic frame (11) via the quick release device (2), and the low-voltage electrical connection module (7) being mounted on the basic frame (11).

6. The chassis assembly according to claim 5, It is characterized in that There are two frame longitudinal beams (111), and both ends of the frame cross beam (112) are respectively fixed to the two frame longitudinal beams (111), the installation position is formed between two adjacent frame cross beams (112), and a row of the installation positions is formed on the basic frame (11).

7. The chassis assembly according to claim 5, It is characterized in that There are three frame longitudinal beams (111), and the three frame longitudinal beams (111) are arranged in sequence at intervals. The frame cross beam (112) is arranged between two adjacent frame longitudinal beams (111), and both ends are respectively fixed on the frame longitudinal beams (111). The installation position is formed between two adjacent frame cross beams (112), and two rows of the installation positions are formed on the basic frame (11).

8. The chassis assembly according to claim 6 or 7, It is characterized in that The battery module (3) is arranged to match the installation position, and the four corners or any two opposite sides of the battery module (3) are fixed to the basic frame (11) through the quick-release device (2).

9. The chassis assembly according to claim 5, It is characterized in that The chassis (1) also includes a lower vehicle body floor (12), which is fixed to the base frame (11) and covers the top of the battery module (3); the high-voltage electrical connection module (5) is arranged on the lower vehicle body floor (12).

10. The chassis assembly according to claim 3, It is characterized in that A plurality of high-voltage cables (51) are arranged on the high-voltage electrical connection module (5), and the first quick-connect connector (4) is arranged at an end of the high-voltage cable (51) away from the high-voltage electrical connection module (5).

11. The chassis assembly according to claim 3, It is characterized in that A plurality of low-voltage cables (71) are arranged on the low-voltage electrical connection module (7), and the second quick-connect connector (6) is arranged at an end of the low-voltage cable (71) away from the low-voltage electrical connection module (7).

12. The chassis assembly according to claim 5, It is characterized in that The battery module (3) is provided with a temperature detection component, and the temperature detection component is electrically connected to the control system.

13. The chassis assembly according to claim 5, It is characterized in that It also includes a fire extinguishing device, which is arranged on the basic frame (11) and is electrically connected to the control system, and the fire extinguishing device is used to extinguish a fire in the battery module (3).

14. The chassis assembly according to claim 1, It is characterized in that The quick-release device (2) comprises: A rotating assembly (21), the rotating assembly (21) comprising a rotating hook (211) rotatably arranged on the chassis (1), the rotating hook (211) having a locking position and a loosening position; A hook assembly, the hook assembly comprising a hook groove (31), the hook groove (31) being arranged on the battery module (3), and when the battery module (3) is in a preset installation position on the chassis (1) and the swivel hook (211) is rotated to the locking position, the swivel hook (211) is engaged in the hook groove (31); when the battery module (3) is in a preset installation position on the chassis (1) and the swivel hook (211) is rotated to the loosening position, the swivel hook (211) is separated from the hook groove (31).

15. The chassis assembly according to claim 2, It is characterized in that The battery module (3) is provided with a connecting flange (33), and the connecting flange (33) is provided with an insertion hole; The first quick-connect connector (4) comprises: An insertion column (41), the first end of which passes through the insertion hole, the insertion column (41) is provided with a chamber (411), and a through hole (412) communicating with the chamber (411) is provided on the outer peripheral wall of the first end of the insertion column (41); An elastic expansion component, the through hole (412) is provided with the elastic expansion component, the elastic expansion component can be partially exposed on the outer peripheral wall of the plug column (41) and pressed against the lower surface of the connecting flange (33); A limiting flange (44) is arranged on the outer peripheral wall of the plug column (41), and the lower end surface of the limiting flange (44) is pressed against the upper surface of the connecting flange (33).

16. The chassis assembly according to claim 15, It is characterized in that The elastic expansion assembly comprises: An elastic sealing member (42) is sealingly disposed on the through hole (412); a steel ball (43) accommodated in the through hole (412) and located outside the elastic sealing member (42); When the first quick-connect connector (4) is inserted into the battery module (3), the steel ball (43) can partially extend out of the outer peripheral wall of the plug post (41) so that the steel ball (43) can be pressed against the lower surface of the connecting flange (33).

17. A vehicle, It is characterized in that It comprises a chassis assembly as claimed in any one of claims 1-16.

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