Automobile chassis device and electric vehicle including the same

Abstract

The present invention discloses an automobile chassis device and an electric vehicle including the same, the automobile chassis device includes a battery-exchange base plate body and at least one first battery pack, the battery-exchange base plate body includes a base plate, the bottom surface of the base plate is provided with at least one first groove that is recessed upward, the first battery pack corresponds to and matches the first groove one by one, and the first battery pack is detachably connected to the first groove. The electric vehicle includes the automobile chassis device as described above. The automobile chassis device and the electric vehicle including the same of the present invention can be quickly and detachably installed in the first groove through the first battery pack, and the same first groove is correspondingly provided for chassis of different brands and models, so that the battery exchange station can replace the first battery pack, thereby ensuring that the battery exchange station can meet the battery exchange needs of electric vehicles of different brands and models. At the same time, the structure is simple and the cost is low.

Description

Technical Field

[0001] The invention relates to an automobile chassis device and an electric vehicle comprising the same. Background Art

[0002] In recent years, with the depletion of oil resources and the increasing severity of environmental pollution, the use rate of electric vehicles has been increasing. However, compared with the popularity and acceptance rate of fuel vehicles, electric vehicles are still far behind. The fundamental reason affecting the popularity of electric vehicles is that the charging time of the battery pack is too long. Based on the above reasons, the battery swap model was born. Compared with charging, first of all, battery swapping can save a lot of time, secondly, battery swapping can avoid charging during peak hours of electricity consumption, and thirdly, battery swapping takes up less parking spaces. However, the battery swap model also has certain constraints, mainly from the fact that the power battery pack is not universal.

[0003] At present, the battery packs used in electric vehicles of different brands and models have different shapes, and each vehicle manufacturer designs them according to the internal space of its own car. If a battery swap station is to swap batteries for electric vehicles of different brands and models, it needs to be equipped with battery packs of different models. However, the brands and models of electric vehicles entering the station for battery swapping are unpredictable, and it is very likely that there will be insufficient battery packs for a certain model. If a battery swap station only swaps batteries for electric vehicles of a single brand and model, then different brands and models of electric vehicles will need to build separate stations, wasting land resources. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an automobile chassis device and an electric vehicle comprising the same in order to overcome the defects that the battery packs used in existing electric vehicles have different shapes, resulting in the inability to replace the battery packs in the electric vehicle.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] A car chassis device, characterized in that it includes a battery exchange base plate body and at least one first battery pack, the battery exchange base plate body includes a base plate, the bottom surface of the base plate is provided with at least one first groove which is recessed upward, the first battery pack corresponds to and matches the first groove one by one, and the first battery pack is detachably connected to the first groove.

[0007] In this solution, the above structure is adopted, and the first battery pack is quickly and detachably installed in the first groove, and the same first groove is correspondingly set for automobile chassis devices of different brands and models, so that the battery swap station can replace the first battery pack, thereby ensuring that the battery swap station can meet the battery swap needs of automobile chassis devices of different brands and models. At the same time, the structure is simple and the cost is low.

[0008] Preferably, the first battery pack includes a standard battery pack, and the vehicle chassis device also includes a plurality of locking mechanisms, which are respectively connected to both sides of the inner wall surface of the first groove and distributed along the length direction of the first groove. The first groove is detachably connected to both sides of the first battery pack through a plurality of the locking mechanisms.

[0009] In this solution, the above-mentioned structural form is adopted, and the first battery pack is installed in the first groove located on the bottom plate through a plurality of locking mechanisms. There is no need to install a battery pack fixing bracket separately, thereby reducing the weight of the entire vehicle and greatly reducing costs.

[0010] Preferably, the locking mechanism includes a pin shaft and a mounting seat, a plurality of the pin shafts are respectively connected to two sides of the standard battery pack, the first groove includes two longitudinal side wall portions, the two longitudinal side wall portions are arranged opposite to each other, a plurality of the mounting seats are respectively connected to the two longitudinal side wall portions and are distributed along the length direction of the longitudinal side wall portions, and the mounting seats have locking grooves for the pin shafts to connect and fix;

[0011] The first battery pack can move in the first groove along the length direction of the longitudinal side wall portion, so that the pin shaft is inserted into the locking groove or the pin shaft is disengaged from the locking groove.

[0012] In this solution, the above-mentioned structural form is adopted, and the pin shaft is detachably inserted into the locking groove, so the installation and disassembly are very convenient and the structure is simple.

[0013] Preferably, the first battery pack further includes a plurality of limit blocks, wherein the plurality of limit blocks are respectively connected to two sides of the standard battery pack, and the plurality of limit blocks are respectively against the two longitudinal side wall portions.

[0014] In this solution, the above-mentioned structural form is adopted, and a plurality of limit blocks can play the role of limiting and clamping the standard battery pack to ensure that the first battery pack can be very reliably installed in the first groove when the automobile chassis device is driving normally.

[0015] Preferably, the first battery pack also includes a plurality of first snap-on limit assemblies, wherein the plurality of first snap-on limit assemblies are connected to both sides of the standard battery pack, and a plurality of second snap-on limit assemblies are provided on one side of the two longitudinal side walls facing the first battery pack, and the plurality of second snap-on limit assemblies correspond one-to-one to the plurality of first snap-on limit assemblies, and the second snap-on limit assemblies are clamped in the first snap-on limit assemblies to limit the relative displacement of the first battery pack and the base plate in the horizontal direction.

[0016] In this solution, the above-mentioned structural form is adopted, and the first buckle limiter assembly is clamped on the second buckle limiter assembly to limit the movement of the first battery pack in the first groove, so that the displacement of the first battery pack can be avoided or at least weakened, thereby avoiding or at least reducing the abnormal noise or wear caused by the collision between the first battery pack and the first groove, thereby improving the safety performance and service life of the first battery pack and the first groove.

[0017] Preferably, the first buckle limiting assembly includes a first buckle limiting portion, the first buckle limiting portion is fixed to the side wall of the standard battery pack, and a first accommodation space is provided between the first buckle limiting portion and the side wall of the standard battery pack; the second buckle limiting assembly includes a second buckle limiting portion, the second buckle limiting portion is fixed to the side wall of the longitudinal side wall portion, and a second accommodation space is provided between the second buckle limiting portion and the side wall of the longitudinal side wall portion;

[0018] The first battery pack moves along the length direction of the longitudinal side wall portion so that the first buckle limit portion is inserted into the second accommodating space, the second buckle limit portion is inserted into the first accommodating space, or the first buckle limit portion is detached from the second accommodating space, and the second buckle limit portion is detached from the first accommodating space.

[0019] In this solution, the above-mentioned structural form is adopted to strengthen the clamping connection between the first buckle limiting assembly and the second buckle limiting assembly, which can very reliably limit the movement of the first battery pack in the first groove. At the same time, the structure is simple and easy to manufacture.

[0020] Preferably, the first battery pack also includes at least one explosion-proof valve, which is connected to the top of the standard battery pack. The first groove has a ventilation duct for unloading the explosion-proof valve, and the ventilation duct is arranged corresponding to the explosion-proof valve.

[0021] In the present solution, the above-mentioned structural form is adopted, and the internal pressure of the standard battery pack is unloaded through the explosion-proof valve and the ventilation duct, thereby avoiding the risk of explosion such as bursting when the battery cell fails such as internal short circuit in the standard battery pack, thereby improving the safety of the automobile chassis device.

[0022] Preferably, the automobile chassis device also includes a vehicle-end electrical connector and a battery-end electrical connector, the vehicle-end electrical connector is located in the first groove, the first groove includes a lateral side wall portion, the vehicle-end electrical connector is connected to the lateral side wall portion, the battery-end electrical connector is connected to the side wall of the first battery pack, the battery-end electrical connector and the vehicle-end electrical connector are arranged correspondingly, and the battery-end electrical connector and the vehicle-end electrical connector are electrically connected.

[0023] Preferably, the vehicle-end electrical connector includes a first mounting seat and a plurality of first poles, and the plurality of first poles are all inserted through the first mounting seat; the battery-end electrical connector includes a second mounting seat and a plurality of second poles, and the plurality of second poles are all inserted through the second mounting seat; the first mounting seat is connected to the lateral side wall portion, and the second mounting seat is connected to the first battery pack; the first mounting seat and the second mounting seat are detachably sealed and connected, and the first mounting seat and the second mounting seat are arranged opposite to each other; the plurality of first poles correspond to the plurality of second poles one-to-one, and the first poles and the second poles are floatingly electrically connected.

[0024] In this solution, the above-mentioned structural form is adopted to achieve a floating connection between the vehicle-end electrical connector and the battery-end electrical connector, effectively avoiding abnormalities such as electrical connection failure or burning caused by loose electrical connection, and improving the stability of the vehicle chassis device during electrical connection.

[0025] Preferably, the automobile chassis device also includes front wheels and rear wheels, and the front wheels and the rear wheels are respectively connected to two ends of the battery exchange base plate body, and the wheelbase of the front wheels is the same as that of the rear wheels.

[0026] Preferably, the automobile chassis device further includes a plurality of sensors, and the plurality of sensors are connected to the bottom plate and are used to detect the specific position of the first battery pack.

[0027] In the present solution, the above-mentioned structural form is adopted, and the sensor can detect the specific position of the first battery pack during installation and removal. During the replacement of the first battery pack at the battery swap station, several sensors will transmit the real-time detected position of the first battery pack to the battery swap station, thereby realizing accurate replacement of the first battery pack.

[0028] Preferably, the bottom surface of the base plate is provided with at least one second groove which is recessed upward, and the vehicle chassis device further includes a second battery pack, the second battery pack corresponds to and matches the second groove one by one, and the second battery pack is connected in the second groove.

[0029] In this solution, the above-mentioned structural form is adopted, and each vehicle manufacturer can design the second battery pack and the second groove according to the internal space of its own electric vehicle, thereby achieving the personalized design of each vehicle manufacturer for the electric vehicle.

[0030] Preferably, the second battery pack is a standard battery pack or a non-standard battery pack, and the second battery pack is fixedly connected in the second groove.

[0031] An electric vehicle is characterized in that it comprises the vehicle chassis device as described above.

[0032] In this solution, the above structure is adopted to realize that electric vehicles of different brands and models can replace the first battery pack at the same battery swap station, thereby ensuring that the battery swap station can meet the battery swap needs of electric vehicles of different brands and models. At the same time, the structure is simple and the cost is low.

[0033] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0034] The positive and progressive effects of the present invention are:

[0035] The automobile chassis device of the present invention and the electric vehicle including the same can be quickly and detachably installed in the first groove through the first battery pack, and the same first groove is correspondingly provided for chassis of different brands and models, so that the first battery pack can be replaced by the battery swap station, thereby ensuring that the battery swap station can meet the battery swap requirements of electric vehicles of different brands and models. At the same time, the structure is simple and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 The figure is a schematic structural diagram of a vehicle chassis device of an electric vehicle according to an embodiment of the present invention.

[0037] Figure 2 Another structural schematic diagram of the vehicle chassis device of the electric vehicle according to an embodiment of the present invention.

[0038] Figure 3 It is a schematic structural diagram of a first battery pack of a vehicle chassis device of an electric vehicle according to an embodiment of the present invention.

[0039] Figure 4 The figure is a schematic diagram of the internal structure of the chassis device of the electric vehicle according to an embodiment of the present invention.

[0040] Figure 5 It is a partial structural schematic diagram of a first groove of a bottom plate of a vehicle chassis device of an electric vehicle according to an embodiment of the present invention.

[0041] Figure 6 The figure is a schematic structural diagram of a locking mechanism of a chassis device of an electric vehicle according to an embodiment of the present invention.

[0042] Figure 7 It is a structural schematic diagram of a first buckle limiting assembly of a first battery pack of a vehicle chassis device of an electric vehicle according to an embodiment of the present invention.

[0043] Figure 8 It is a schematic structural diagram of a vehicle-end electrical connector and a battery-end electrical connector of a vehicle chassis device of an electric vehicle according to an embodiment of the present invention.

[0044] Description of reference numerals:

[0045] Bottom plate 1

[0046] The first groove 11

[0047] Longitudinal side wall portion 111

[0048] Transverse side wall portion 112

[0049] Second buckle limiting component 113

[0050] First battery pack 2

[0051] Standard battery pack 21

[0052] Limit block 22

[0053] The first buckle limiting component 23

[0054] The first buckle limiting portion 231

[0055] The first storage space 232

[0056] Explosion-proof valve 24

[0057] Locking mechanism 3

[0058] Pin 31

[0059] Mounting Block 32

[0060] Locking groove 33

[0061] Locking linkage part 34

[0062] Front wheel 4

[0063] Rear wheel 5

[0064] Vehicle-side electrical connector 6

[0065] First mounting seat 61

[0066] First pole 62

[0067] Battery terminal electrical connector 7

[0068] Second mounting seat 71

[0069] Second pole 72 DETAILED DESCRIPTION

[0070] The present invention will be described more clearly and completely below by way of embodiments in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments.

[0071] like Figures 1 to 8As shown, the electric vehicle of the embodiment of the present invention includes a vehicle chassis device. The vehicle chassis device includes a battery replacement base plate body and at least one first battery pack 2. The battery replacement base plate body includes a base plate 1. The bottom surface of the base plate 1 is provided with at least one first groove 11 that is recessed upward. The first battery pack 2 corresponds to and matches the first groove 11 one by one, and the first battery pack 2 is detachably connected to the first groove 11. The first groove 11 has a space for storing the first battery pack 2. The first battery pack 2 is inserted into the first groove 11 and is detachably connected to the first groove 11, so that the first battery pack 2 can be quickly and detachably installed in the first groove 11. The same first groove 11 is correspondingly provided for chassis of different brands and models, so that the battery replacement station can replace the first battery pack 2 on the electric vehicle, thereby ensuring that the battery replacement station can meet the battery replacement needs of electric vehicles of different brands and models. At the same time, the structure is simple and the cost is low.

[0072] The first battery pack 2 may include a standard battery pack 21, and the automobile chassis device also includes a plurality of locking mechanisms 3, which are respectively connected to both sides of the inner wall surface of the first groove 11 and are distributed along the length direction of the first groove 11. The first groove 11 is detachably connected to both sides of the first battery pack 2 through a plurality of locking mechanisms 3. The first battery pack 2 is inserted into the first groove 11 and connected to a plurality of locking mechanisms 3, so that the first battery pack 2 is installed on the bottom plate 1; the first battery pack 2 can be removed from the first groove 11 by disassembling between the first battery pack 2 and the plurality of locking mechanisms 3. The first battery pack 2 is installed in the first groove 11 located on the bottom plate 1 through a plurality of locking mechanisms 3, and there is no need to install a battery pack fixing bracket separately, thereby reducing the weight of the entire vehicle and greatly reducing the cost.

[0073] Among them, the structure of the bottom plate 1 is a plate-like structure, and the first groove 11 on the bottom plate 1 can be integrally formed by processing techniques such as drawing, stamping or casting. The shape of the first groove 11 is made according to the size of the standard battery pack 21. The first groove 11 makes the automobile chassis device standardized and universal, and different versions of electric vehicles can be replaced at the same battery swap station, which increases the use scenarios of the battery swap station and improves its utilization efficiency.

[0074] The bottom surface of the bottom plate 1 may be provided with at least one second groove (not shown) that is recessed upward, and the automobile chassis device further includes a second battery pack, which corresponds to and matches the second groove one by one, and the second battery pack is connected to the second groove. The second groove has a space for storing the second battery pack, and the second battery pack is inserted into and connected to the second groove. Each vehicle manufacturer can design the second battery pack and the second groove according to the internal space of its own electric vehicle, thereby achieving the personalized design of each vehicle manufacturer for the electric vehicle.

[0075] The second battery pack can be a non-standard battery pack 21, and the second battery pack is fixedly connected in the second groove, which effectively strengthens the structural connection strength of the vehicle chassis device. The second battery pack can be a standard battery pack 21, and the second battery pack can also be detachably connected in the second groove to achieve battery replacement of the second battery pack. The shape of the second battery pack can be a regular rectangle or square, or an irregular shape.

[0076] The automobile chassis device may also include a front wheel 4 and a rear wheel 5, which are respectively connected to the two ends of the battery exchange base body, and the wheelbase of the front wheel 4 is the same as that of the rear wheel 5. The battery exchange base body is the main load-bearing structure of the automobile chassis device, and the battery exchange base body can be fixedly connected to the front wheel 4 and the rear wheel 5 by a suspension structure.

[0077] The locking mechanism 3 may include a pin shaft 31 and a mounting seat 32, and several pin shafts 31 are respectively connected to the two sides of the standard battery pack 21, and the first groove 11 includes two longitudinal side wall portions 111, which are arranged opposite to each other. Several mounting seats 32 are respectively connected to the two longitudinal side wall portions 111 and are distributed along the length direction of the longitudinal side wall portions 111, and the mounting seats 32 have locking grooves 33 for the pin shaft 31 to be connected and fixed; the first battery pack 2 can move in the first groove 11 along the length direction of the longitudinal side wall portion 111, so that the pin shaft 31 inserted into the locking groove 33 can be disengaged from the locking groove 33. The first battery pack 2 is inserted into the first groove 11 and moves along the length direction of the longitudinal side wall 111 in the first groove 11, so that the lock shaft of the first battery pack 2 is inserted into the locking groove 33, so that the pins 31 on both sides of the standard battery pack 21 are connected to the locking groove 33, and the first battery pack 2 is installed in the first groove 11 of the bottom plate 1. Otherwise, the first battery pack 2 and the locking mechanism 3 are disassembled, and the first battery pack 2 can be separated from the first groove 11. It is easy to use and has a simple structure.

[0078] The locking mechanism 3 may further include a locking linkage 34, which is telescopically mounted on the longitudinal side wall 111, and which may also be rotatably connected to the mounting seat 32. The locking linkage 34 can move relative to the mounting seat 32, so that the locking linkage 34 extends into the locking groove 33 to prevent the pin 31 from leaving the locking groove 33 or exits the locking groove 33 to allow the pin 31 to leave the locking groove 33. During the movement of the locking linkage 34, the locking linkage 34 can rotate and move, and the locking linkage 34 will be inserted into the locking groove 33 or exit the locking groove 33. During the use of the first battery pack 2, the pin 31 on the standard battery pack 21 is inserted into the locking groove 33, and the locking linkage 34 is inserted into the locking groove 33, which can effectively prevent the pin 31 from leaving the locking groove 33, thereby greatly improving the reliability of the locking mechanism 3 and reducing or avoiding the occurrence of the phenomenon of the first battery pack 2 falling off.

[0079] The first battery pack 2 may further include a plurality of limit blocks 22, which are respectively connected to both sides of the standard battery pack 21, and the plurality of limit blocks 22 respectively abut against the two longitudinal sidewalls 111. After the first battery pack 2 is installed in the first groove 11, the plurality of limit blocks 22 can play a role in limiting and clamping the standard battery pack 21 in the width direction of the electric vehicle, so as to ensure that the first battery pack 2 can be reliably installed in the first groove 11 when the electric vehicle is driving normally.

[0080] The first battery pack 2 may also include a plurality of first buckle limit assemblies 23, which are connected to both sides of the standard battery pack 21, and a plurality of second buckle limit assemblies 113 are provided on the side of the two longitudinal sidewalls 111 facing the first battery pack 2, and the plurality of second buckle limit assemblies 113 correspond to the plurality of first buckle limit assemblies 23 one by one, and the second buckle limit assemblies 113 are clamped on the first buckle limit assemblies 23 to limit the relative displacement of the first battery pack 2 and the bottom plate 1 in the horizontal direction. The plurality of first buckle limit assemblies 23 are respectively connected to both sides of the standard battery pack 21, and the plurality of second buckle limit assemblies 113 are respectively connected to the two longitudinal sidewalls 111, and the first buckle limit assemblies 23 are clamped on the second buckle limit assemblies 113 to limit the movement of the first battery pack 2 along the front end of the electric vehicle in the first groove 11. The displacement of the first battery pack 2 during non-steady operation of the electric vehicle can be avoided or at least weakened, thereby avoiding or at least reducing abnormal noise or wear caused by the collision between the first battery pack 2 and the first groove 11, thereby improving the safety performance and service life of the first battery pack 2 and the first groove 11.

[0081] The first snap-on limit assembly 23 may include a first snap-on limit portion 231, which is fixed to the side wall of the standard battery pack 21, and a first accommodating space 232 is provided between the first snap-on limit portion 231 and the side wall of the standard battery pack 21; the second snap-on limit assembly 113 includes a second snap-on limit portion, which is fixed to the side wall of the longitudinal side wall portion 111, and a second accommodating space is provided between the second snap-on limit portion and the side wall of the longitudinal side wall portion 111; the first battery pack 2 moves along the length direction of the longitudinal side wall portion 111 so that the first snap-on limit portion 231 is inserted into the second accommodating space, the second snap-on limit portion is inserted into the first accommodating space 232, or the first snap-on limit portion 231 is detached from the second accommodating space, and the second snap-on limit portion is detached from the first accommodating space 232. The first accommodating space 232 can be partially inserted into the second snap-on limiting portion, so that the first snap-on limiting component 23 and the second snap-on limiting component 113 can be locked together, and the second accommodating space can be partially inserted into the first snap-on limiting component 231, further strengthening the locking connection between the first snap-on limiting component 23 and the second snap-on limiting component 113, and very reliably limiting the movement of the first battery pack 2 in the first groove 11 along the front end of the electric vehicle. At the same time, the structure is simple and easy to manufacture.

[0082] The first battery pack 2 may further include at least one explosion-proof valve 24, which is connected to the top of the standard battery pack 21. The first groove 11 has a ventilation duct for unloading the explosion-proof valve 24, and the ventilation duct is arranged corresponding to the explosion-proof valve 24. The internal pressure of the standard battery pack 21 is unloaded through the explosion-proof valve 24 and the ventilation duct, avoiding the risk of explosion such as bursting when the battery cell fails such as internal short circuit of the standard battery pack 21, thereby improving the safety of the electric vehicle.

[0083] The automobile chassis device may also include a vehicle-end electrical connector 6 and a battery-end electrical connector 7. The vehicle-end electrical connector 6 is located in the first groove 11. The first groove 11 includes a transverse side wall portion 112. The vehicle-end electrical connector 6 is connected to the transverse side wall portion 112. The battery-end electrical connector 7 is connected to the side wall of the first battery pack 2. The battery-end electrical connector 7 and the vehicle-end electrical connector 6 are arranged correspondingly, and the battery-end electrical connector 7 and the vehicle-end electrical connector 6 are electrically connected. The first battery pack 2 is inserted and installed in the first groove 11. The electric vehicle is electrically connected to the first battery pack 2 through the vehicle-end electrical connector 6 and the battery-end electrical connector 7. When the first battery pack 2 is detached from the first groove 11, the electrical connection between the vehicle-end electrical connector 6 and the battery-end electrical connector 7 is disconnected. The vehicle-end electrical connector 6 on the first groove 11 and the battery-end electrical connector 7 on the first battery pack 2 are used for electrical connection, and are used for reliable transmission of the power supply output of the first battery pack 2, the communication between the BMS and the VCU, the charging and other signals to the electric control system of the electric vehicle. The transverse side wall portion 112 is arranged along the width direction of the electric vehicle, and the two longitudinal side wall portions 111 are arranged along the length direction of the electric vehicle.

[0084] The vehicle-end electrical connector 6 may include a first mounting seat 61 and a plurality of first poles 62, and the plurality of first poles 62 are all inserted through the first mounting seat 61. The battery-end electrical connector 7 includes a second mounting seat 71 and a plurality of second poles 72, and the plurality of second poles 72 are all inserted through the second mounting seat 71. The first mounting seat 61 is connected to the lateral side wall portion 112, and the second mounting seat 71 is connected to the first battery pack 2. The first mounting seat 61 and the second mounting seat 71 are detachably sealed and connected, and the first mounting seat 61 and the second mounting seat 71 are arranged opposite to each other. The plurality of first poles 62 correspond to the plurality of second poles 72 one by one, and the first poles 62 and the second poles 72 are floatingly electrically connected. The first battery pack 2 moves in the first groove 11 along the length direction of the electric vehicle to achieve connection or disconnection between the first pole 62 and the second pole 72. The first pole 62 is connected in a floating manner in the first mounting seat 61, and the second pole 72 is connected in a floating manner in the second mounting seat 71. The first pole 62 and the second pole 72 are connected in a floating manner, and a floating electrical connection is achieved between the vehicle-end electrical connector 6 and the battery-end electrical connector 7, effectively avoiding abnormalities such as electrical connection failure or burning caused by loose electrical connection, and improving the stability of the electric vehicle during electrical connection. Among them, the vehicle-end electrical connector 6 and the battery-end electrical connector 7 are electrically connected by a planar connection method, and a conductive spring is pressed between the first pole 62 and the second pole 72.

[0085] The automobile chassis device may also include a number of sensors (not shown in the figure), which are all connected to the base plate 1 and used to detect the specific position of the first battery pack 2. The sensor can detect the specific position of the first battery pack 2 during installation and removal. During the replacement of the first battery pack 2 at the battery swap station, the sensors transmit the real-time detected position of the first battery pack 2 to the battery swap station to achieve accurate replacement of the first battery pack 2. Among them, sensors for detecting whether the locking mechanism 3 is in place can also be installed on both sides of the bottom of the battery swap base plate body. The sensors transmit the detected signals to the control system of the electric vehicle and the control system of the battery swap station via the wiring harness.

[0086] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. An automobile chassis device, characterized in that: It includes a battery replacement base plate body and at least one first battery pack, the battery replacement base plate body includes a base plate, the bottom surface of the base plate is provided with at least one first groove that is recessed upwards, the first battery pack corresponds to and matches the first groove one by one, and the first battery pack is detachably connected to the first groove; The first battery pack includes a standard battery pack, the first groove includes two longitudinal side wall portions, the two longitudinal side wall portions are arranged opposite to each other, the first battery pack also includes a plurality of first buckle limit assemblies, the plurality of first buckle limit assemblies are connected to both sides of the standard battery pack, a plurality of second buckle limit assemblies are arranged on one side of the two longitudinal side wall portions facing the first battery pack, the plurality of second buckle limit assemblies correspond to the plurality of first buckle limit assemblies one by one, and the second buckle limit assemblies are clamped on the first buckle limit assemblies to limit the relative displacement of the first battery pack and the bottom plate in the horizontal direction; The first buckle limiter assembly includes a first buckle limiter, the first buckle limiter is fixed to the side wall of the standard battery pack, and a first accommodation space is defined between the first buckle limiter and the side wall of the standard battery pack; the second buckle limiter assembly includes a second buckle limiter, the second buckle limiter is fixed to the side wall of the longitudinal side wall, and a second accommodation space is defined between the second buckle limiter and the side wall of the longitudinal side wall; The first battery pack moves along the length direction of the longitudinal side wall portion, so that the first buckle limit portion is inserted into the second accommodation space, the second buckle limit portion is inserted into the first accommodation space, or the first buckle limit portion is detached from the second accommodation space, and the second buckle limit portion is detached from the first accommodation space; The automobile chassis device also includes front wheels and rear wheels, and the front wheels and the rear wheels are respectively connected to the two ends of the battery exchange base plate body, and the wheelbase of the front wheels is the same as that of the rear wheels.

2. The automobile chassis device according to claim 1, characterized in that: The automobile chassis device also includes a plurality of locking mechanisms, which are respectively connected to both sides of the inner wall surface of the first groove and distributed along the length direction of the first groove. The first groove is detachably connected to both sides of the first battery pack through the plurality of locking mechanisms.

3. The automobile chassis device according to claim 2, characterized in that: The locking mechanism includes a pin shaft and a mounting seat, wherein a plurality of the pin shafts are respectively connected to two sides of the standard battery pack, a plurality of the mounting seats are respectively connected to the two longitudinal side wall portions and are distributed along the length direction of the longitudinal side wall portions, and the mounting seats are provided with locking grooves for the pin shafts to be connected and fixed; The first battery pack can move in the first groove along the length direction of the longitudinal side wall portion so that the pin shaft is inserted into the locking groove or the pin shaft is disengaged from the locking groove.

4. The automobile chassis device according to claim 3, characterized in that: The first battery pack further includes a plurality of limit blocks, wherein the plurality of limit blocks are respectively connected to two sides of the standard battery pack, and the plurality of limit blocks are respectively against the two longitudinal side wall portions.

5. The automobile chassis device according to claim 2, characterized in that: The first battery pack also includes at least one explosion-proof valve, which is connected to the top of the standard battery pack. The first groove has a ventilation duct for unloading the explosion-proof valve, and the ventilation duct is arranged corresponding to the explosion-proof valve.

6. The automobile chassis device according to claim 1, characterized in that: The automobile chassis device also includes a vehicle-end electrical connector and a battery-end electrical connector. The vehicle-end electrical connector is located in the first groove. The first groove includes a lateral side wall portion. The vehicle-end electrical connector is connected to the lateral side wall portion. The battery-end electrical connector is connected to the side wall of the first battery pack. The battery-end electrical connector and the vehicle-end electrical connector are arranged correspondingly, and the battery-end electrical connector and the vehicle-end electrical connector are electrically connected.

7. The automobile chassis device according to claim 6, characterized in that: The vehicle-end electrical connector includes a first mounting seat and a plurality of first poles, and the plurality of first poles are all inserted through the first mounting seat. The battery-end electrical connector includes a second mounting seat and a plurality of second poles, and the plurality of second poles are all inserted through the second mounting seat. The first mounting seat is connected to the lateral side wall portion, and the second mounting seat is connected to the first battery pack. The first mounting seat and the second mounting seat are detachably sealed and connected, and the first mounting seat and the second mounting seat are arranged opposite to each other. The plurality of first poles correspond to the plurality of second poles one-to-one, and the first poles and the second poles are floatingly electrically connected.

8. The automobile chassis device according to claim 1, characterized in that: The automobile chassis device also includes a plurality of sensors, which are all connected to the bottom plate and are used to detect the specific position of the first battery pack.

9. The automobile chassis device according to claim 1, characterized in that: The bottom surface of the bottom plate is provided with at least one second groove which is recessed upwards. The automobile chassis device also includes a second battery pack. The second battery pack corresponds to and matches the second groove one by one, and the second battery pack is connected to the second groove.

10. The automobile chassis device according to claim 9, characterized in that: The second battery pack is a standard battery pack or a non-standard battery pack, and the second battery pack is fixedly connected in the second groove.

11. An electric vehicle, characterized in that: It comprises the automobile chassis device according to any one of claims 1-10.

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