Connecting structure and vehicle

Abstract

The invention relates to the technical field of vehicle battery replacement, in particular to a connecting structure and a vehicle. The connecting structure is used for connecting the battery box and the frame and comprises a connecting assembly and an air pressure system; the connecting assembly comprises a locking piece, a first connecting piece, a second connecting piece and an air bag, the first connecting piece is used for being arranged on the frame, and the locking piece is used for being inserted into the battery box so as to lock the battery box on the frame together with part of the first connecting piece; the air pressure system is communicated with the air bag, and the air pressure system inflates the air bag to drive the second connecting piece to move towards the battery box, so that the second connecting piece partially abuts against the locking piece; the first connecting piece is configured to move towards the battery box when the second connecting piece moves towards the battery box; and when the second connecting piece partially abuts against the locking piece, the locking piece moves towards the second connecting piece, and the locking piece and the second connecting piece are both separated from the locking piece, so that the battery box and the frame are unlocked. According to the connecting structure and the vehicle, the replacement efficiency of the battery box is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle battery replacement technology, and in particular to a connection structure and a vehicle. Background Art

[0002] Heavy trucks, or heavy trucks for short, are an important part of commercial vehicles. The battery power of pure electric heavy trucks is difficult to meet the needs of longer driving distances. If the battery capacity is increased, the charging time will be extended, which will affect transportation efficiency. Therefore, pure electric heavy trucks usually use "battery replacement" technology to meet driving needs, that is, remove the battery box with insufficient power and replace it with a fully charged battery box.

[0003] In the prior art, the battery box is fixed to the beam of the heavy truck by screws. When replacing the battery, the staff needs to manually remove the screws connecting the battery box and the beam to remove the battery box with insufficient power, and then manually tighten the screws to install the fully charged battery box.

[0004] However, the above method of replacing the battery box is time-consuming and labor-intensive, and the replacement efficiency is low. Summary of the invention

[0005] The present application provides a connection structure and a vehicle, which improves the replacement efficiency of the battery box.

[0006] In a first aspect, the connection structure provided in the present application is used to connect a battery box and a vehicle frame, including a connection assembly and an air pressure system.

[0007] The connecting component includes a locking member, a first connecting member, a second connecting member and an airbag. The second connecting member and the airbag are both mounted on the first connecting member. The first connecting member is used to be set on the frame, and part of the first connecting member is inserted into the battery box. The second connecting member and the airbag are both located in the battery box.

[0008] The locking member is used to be inserted into the battery box, so as to lock the battery box to the vehicle frame together with a part of the first connecting member.

[0009] The air pressure system is communicated with the air bag, and the air pressure system is used to inflate the air bag to drive the second connecting member to move toward the battery box, so that the second connecting member partially abuts against the locking member.

[0010] The first connecting member is configured to move toward the battery box when the second connecting member moves toward the battery box; and to move toward the second connecting member when the second connecting member partially abuts against the locking member, so as to abut against a portion of the second connecting member to drive the second connecting member to move away from the battery box, and to disengage from the locking member with the second connecting member to unlock the battery box and the frame.

[0011] In a possible implementation, the connection structure provided by the present application, the connection assembly also includes a support base, the support base is connected to the frame, and the support base is provided with an air inlet channel and an air outlet channel.

[0012] The airbag is provided with an air inlet and an air outlet. The air inlet is connected to the air pressure system through an air inlet channel, and the air outlet is connected to the air outlet channel.

[0013] In a possible implementation, the connection structure provided by the present application, the air pressure system includes an air pump, an air tank and a pipeline, the pipeline connects the air pump, the air tank and the air inlet channel, and the air tank inflates the air into the air inlet hole through the pipeline and the air inlet channel.

[0014] In a possible implementation, the connection structure provided by the present application, the air pressure system also includes a first control valve and a second control valve, the first control valve is arranged between the air storage tank and the air intake passage, and the first control valve controls the air storage tank to inflate air into the air intake passage.

[0015] The second control valve is connected to the air outlet passage to control the exhaust of the air outlet passage.

[0016] In a possible implementation, in the connection structure provided by the present application, the airbag is annular, and the axial direction of the airbag is consistent with the extension direction of the first connecting member.

[0017] In a possible implementation, the connection structure provided by the present application, the connection assembly also includes a first support and a second support, the first support connects the airbag and the frame, and the second support connects the airbag and the second connecting member.

[0018] In a possible implementation, the connection structure provided in the present application has a connecting portion on the first connecting member, the connecting portion is located in the battery box, and the locking member and the connecting portion jointly lock the battery box to the frame.

[0019] In a possible implementation, in the connection structure provided by the present application, the second connection member is located between the airbag and the connection portion, and when the airbag drives the second connection member to move toward the battery box, it drives the connection portion to move toward the battery box.

[0020] In a possible implementation, in the connection structure provided by the present application, the connection assembly further includes a sleeve, which is sleeved on a portion of the first connecting member, and the sleeve is used to connect to the frame.

[0021] The first connecting member also has a partition, which divides the sleeve into a first chamber and a second chamber.

[0022] The sleeve has a first oil hole and a second oil hole. The first oil hole is connected to the first chamber, and hydraulic oil is injected into or flows out of the first chamber through the first oil hole. The second oil hole is connected to the second chamber, and hydraulic oil is injected into or flows out of the second chamber through the second oil hole to drive the partition to move toward or away from the battery box.

[0023] In a second aspect, the vehicle provided in the present application includes a vehicle body and any one of the connection structures provided in the first aspect above, which is arranged on the vehicle body.

[0024] The connection structure and vehicle of the present application, the connection structure is used to connect the battery box and the frame, the connection structure is provided with a connection component and a pneumatic system, the connection component includes a locking member, a first connection member, a second connection member and an airbag, and the pneumatic system is connected to the airbag. The first connection member is used to be provided on the frame, and part of the first connection member is inserted in the battery box, and the second connection member and the airbag are both located in the battery box. The locking member is used to be inserted in the battery box, so as to lock the battery box to the frame together with part of the first connection member.

[0025] When disassembling a low-power battery box, the air pressure system inflates the airbag to drive the second connector to move toward the battery box, so that the second connector partially abuts against the locking member, and the first connector moves toward the battery box until it is disengaged from the locking member. Then, the first connector moves toward the second connector until both are disengaged from the locking member to unlock the battery box and the frame. When installing a fully charged battery box, the first connector moves toward the battery box until part of the first connector and the locking member jointly lock the battery box to the frame. This completes the replacement of the battery box, which is easy to operate and improves the efficiency of battery box replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 A schematic diagram of the connection structure provided in the embodiment of the present application;

[0028] Figure 2 for Figure 1 A schematic diagram of the structure of another state;

[0029] Figure 3 for Figure 1 A structural diagram of another state;

[0030] Figure 4 A partial exploded schematic diagram of a connection structure provided in an embodiment of the present application;

[0031] Figure 5 for Figure 1 A schematic diagram of the structure of the middle support seat;

[0032] Figure 6A schematic diagram of a pneumatic system provided in an embodiment of the present application;

[0033] Figure 7 Schematic diagram of the hydraulic system provided in the embodiment of the present application Figure 1 ;

[0034] Figure 8 Schematic diagram of the hydraulic system provided in the embodiment of the present application Figure 2 .

[0035] Description of reference numerals:

[0036] 10-battery box;

[0037] 20-frame;

[0038] 100-connection component; 101-first connection component; 102-second connection component; 103-third connection component; 104-fourth connection component;

[0039] 110-locking member; 111-locking tongue; 112-spring; 113-locking seat;

[0040] 120-first connecting member; 121-connecting portion; 122-separating portion;

[0041] 130 - second connecting member;

[0042] 140-airbag; 141-air inlet; 142-air outlet;

[0043] 150-support seat; 151-air inlet channel; 152-air outlet channel;

[0044] 160-first support;

[0045] 170- second support;

[0046] 180-sleeve; 181-first chamber; 182-second chamber; 183-first oil hole; 184-second oil hole;

[0047] 200-air pressure system;

[0048] 210-air pump; 220-air storage tank; 230-pipeline; 240-first control valve; 250-second control valve; 260-air pressure sensor; 270-first one-way valve;

[0049] 300-Hydraulic system;

[0050] 310 - oil storage tank; 320 - oil pump; 330 - oil pipe; 340 - third control valve; 350 - oil pressure sensor; 360 - second one-way valve.

[0051] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0052] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0053] Secondly, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0054] Then, it should be noted that, in the description of the present application, the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application 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 a limitation on the present application.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0056] As shown in the background technology, in the prior art, the battery box is fixed to the beam of the heavy truck by screws. When replacing the battery, the staff needs to manually remove the screws connecting the battery box and the beam to remove the battery box with insufficient power, and then manually tighten the screws to install the fully charged battery box.

[0057] However, the above method of replacing the battery box is time-consuming and labor-intensive, and the replacement efficiency is low.

[0058] Based on this, the present application provides a connection structure and a vehicle, wherein the connection structure is used to connect the battery box and the frame, and the connection structure is provided with a connection assembly and a pneumatic system, wherein the connection assembly includes a locking member, a first connection member, a second connection member and an airbag, and the pneumatic system is connected to the airbag. The first connection member is used to be provided on the frame, and a portion of the first connection member is inserted into the battery box, and the second connection member and the airbag are both located in the battery box. The locking member is used to be inserted into the battery box, so as to lock the battery box to the frame together with a portion of the first connection member.

[0059] When disassembling a low-power battery box, the air pressure system inflates the airbag to drive the second connector to move toward the battery box, so that the second connector partially abuts against the locking member, and the first connector moves toward the battery box until it is disengaged from the locking member. Then, the first connector moves toward the second connector until both are disengaged from the locking member to unlock the battery box and the frame. When installing a fully charged battery box, the first connector moves toward the battery box until part of the first connector and the locking member jointly lock the battery box to the frame. This completes the replacement of the battery box, which is easy to operate and improves the efficiency of battery box replacement.

[0060] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0061] Reference Figure 1 and Figure 6 As shown, the connection structure provided in the present application is used to connect the battery box 10 and the frame 20, including a connection assembly 100 and an air pressure system 200.

[0062] The connecting assembly 100 includes a locking member 110, a first connecting member 120, a second connecting member 130 and an airbag 140. The second connecting member 130 and the airbag 140 are both mounted on the first connecting member 120. The first connecting member 120 is used to be set on the frame 20, and part of the first connecting member 120 is inserted into the battery box 10. The second connecting member 130 and the airbag 140 are both located in the battery box 10.

[0063] The locking member 110 is used to be inserted into the battery box 10 , so as to lock the battery box 10 to the vehicle frame 20 together with a portion of the first connecting member 120 .

[0064] The air pressure system 200 is in communication with the airbag 140 , and is used to inflate air into the airbag 140 to drive the second connecting member 130 to move toward the battery box 10 , so that a portion of the second connecting member 130 abuts against the locking member 110 .

[0065] The first connecting member 120 is configured to move toward the battery box 10 when the second connecting member 130 moves toward the battery box 10; and to move toward the second connecting member 130 when the second connecting member 130 partially abuts against the locking member 110, so as to abut against a portion of the second connecting member 130 to drive the second connecting member 130 to move away from the battery box 10, and to disengage from the locking member 110 with the second connecting member 130 to unlock the battery box 10 and the frame 20.

[0066] Reference Figure 1 As shown, the first connecting member 120 is used to be set on the frame 20, and part of the first connecting member 120 is inserted in the battery box 10. The locking member 110 is used to be inserted on the battery box 10, so as to lock the battery box 10 to the frame 20 together with part of the first connecting member 120, so as to ensure that the battery box 10 is firmly connected to the frame 20 to prevent the battery box 10 from loosening or falling off during the driving of the vehicle.

[0067] It should be noted that when the second connecting member 130 moves toward the battery box 10, the first connecting member 120 moves toward the battery box 10. The process of the first connecting member 120 moving toward the battery box 10 can be driven by the hydraulic system 300 and the airbag 140, or by other power systems, and can also be manually adjusted. The embodiments of the present application do not impose too many restrictions on this.

[0068] When disassembling the battery box 10 with low power, refer to Figure 2 As shown, the air pressure system 200 inflates the airbag 140, and the airbag 140 begins to expand after being inflated, thereby driving the second connecting member 130 to move toward the battery box 10, that is, the second connecting member 130 moves along Figure 2 The second connecting member 130 moves in the positive direction of Y as indicated by the arrow in the middle, and the second connecting member 130 gradually approaches the locking member 110 during the movement. When the second connecting member 130 contacts the locking member 110, the second connecting member 130 exerts a force on the locking member 110 along Figure 2 The force in the positive direction of X or the reverse direction of X indicated by the arrow in the middle is used to push open the locking member 110, so as to continue to move toward the battery box 10 until part of the second connecting member 130 abuts against the locking member 110, and the air pressure system 200 stops inflating the airbag 140. At the same time, when the second connecting member 130 moves toward the battery box 10, the first connecting member 120 also moves toward the battery box 10, and the first connecting member 120 gradually moves away from the locking member 110 during the movement. When part of the second connecting member 130 abuts against the locking member 110, the first connecting member 120 is separated from the locking member 110.

[0069] Next, refer to Figure 3 As shown, the first connecting member 120 faces away from the battery box 10 (ie Figure 3 When the first connecting member 120 moves in the opposite direction of Y (in the opposite direction of Y as indicated by the arrow in the figure), part of the first connecting member 120 abuts against the second connecting member 130, and the first connecting member 120 can apply a force to the second connecting member 130 to push the second connecting member 130 to move synchronously in the opposite direction of Y. Since part of the first connecting member 120 abuts against the second connecting member 130, and part of the second connecting member 130 abuts against the locking member 110, when the second connecting member 130 and the first connecting member 120 move in the opposite direction of Y, a force can be applied to the locking member 110 to push open the locking member 110. At the same time, the second connecting member 130 squeezes the airbag 140, part of the gas in the airbag 140 is discharged, the volume of the airbag 140 is reduced, and the first connecting member 120 and the second connecting member 130 are away from the locking member 110 until the first connecting member 120 and the second connecting member 130 are both separated from the locking member 110, thereby unlocking the battery box 10 and the frame 20.

[0070] When installing a fully charged battery box 10, refer to Figure 1 As shown, the first connecting member 120 moves toward the battery box 10, so that part of the first connecting member 120 is inserted into the battery box 10, and the second connecting member 130 and the airbag 140 are both located in the battery box 10. The first connecting member 120 continues to move toward the battery box 10, and the first connecting member 120 gradually approaches the locking member 110 during the movement. When part of the first connecting member 120 contacts the locking member 110, the first connecting member 120 exerts pressure on the locking member 110. Figure 1 The locking member 110 is pushed open by the positive direction of the X or the reverse direction of the X indicated by the arrow, so as to continue to move toward the battery box 10 until the locking member 110 and part of the first connecting member 120 jointly lock the battery box 10 to the frame 20. Thus, the replacement of the battery box 10 is completed, the operation is convenient, and the replacement efficiency of the battery box 10 is improved.

[0071] In some embodiments, reference Figure 4 and Figure 5 As shown, the connection assembly 100 further includes a support base 150 , which is connected to the vehicle frame 20 , and an air inlet passage 151 and an air outlet passage 152 are provided on the support base 150 .

[0072] The airbag 140 has an air inlet 141 and an air outlet 142 . The air inlet 141 is connected to the air pressure system 200 through an air inlet channel 151 , and the air outlet 142 is connected to the air outlet channel 152 .

[0073] Specifically, by setting an air inlet channel 151 on the support seat 150, the air inlet channel 151 connects the air inlet hole 141 of the airbag 140 with the air pressure system 200, so that the gas provided by the air pressure system 200 can enter the airbag 140 through the air inlet channel 151 and the air inlet hole 141 in sequence.

[0074] By arranging the air outlet channel 152 on the support seat 150 , the air outlet channel 152 is communicated with the air outlet on the airbag 140 , so that the gas in the airbag 140 can be discharged through the air outlet hole 142 and the air outlet channel 152 in sequence.

[0075] The support base 150 is connected to the frame 20. For example, the support base 150 can be fixed to the frame 20 by screws, or can be connected to the frame 20 in other ways. The embodiment of the present application does not impose too many restrictions on this.

[0076] It should be noted that the vehicle frame 20 has two first through holes, one of which is connected to the air inlet passage 151 and the air inlet hole 141 , and the other is connected to the air outlet passage 152 and the air outlet hole 142 .

[0077] In some embodiments, reference Figure 4 and Figure 6 As shown, the air pressure system 200 includes an air pump 210 , an air tank 220 and a pipeline 230 . The pipeline 230 connects the air pump 210 , the air tank 220 and the air inlet channel 151 . The air tank 220 inflates air into the air inlet hole 141 through the pipeline 230 and the air inlet channel 151 .

[0078] It should be noted that the air pump 210 can suck air or other gases from the external environment and deliver them to the gas tank 220 after pressurization. The gas tank 220 is used to store the gas pressurized by the air pump 210, and can provide a stable gas source when the air pump 210 is not working, ensuring that the system can immediately provide gas when needed. The pipeline 230 connects the air pump 210, the gas tank 220 and the air inlet channel 151 to ensure smooth flow of gas between different components. The air pump 210 delivers the gas to the gas tank 220 through the pipeline 230, and the gas tank 220 then delivers the gas to the air inlet hole 141 of the airbag 140 through the pipeline 230 and the air inlet channel 151, thereby inflating the airbag 140.

[0079] In some embodiments, reference Figure 6 As shown, the air pressure system 200 further includes a first control valve 240 and a second control valve 250 . The first control valve 240 is disposed between the air storage tank 220 and the air intake passage 151 . The first control valve 240 controls the air storage tank 220 to inflate air into the air intake passage 151 .

[0080] The second control valve 250 is connected to the gas outlet passage 152 to control the gas outlet passage 152 to exhaust gas.

[0081] It should be noted that the first control valve 240 and the second control valve 250 may be solenoid switch valves or other valves, and the embodiment of the present application does not impose excessive restrictions on the types of the first control valve 240 and the second control valve 250.

[0082] It should also be noted that the air pressure system 200 can be electrically connected to the controller of the vehicle. An air pressure sensor 260 can be provided on the pipeline 230 to detect the pressure value in the gas tank 220. When the air pressure in the gas tank 220 is too low, the vehicle controller starts the air pump 210 to replenish the gas in the gas tank 220. A first one-way valve 270 can also be provided on the pipeline 230 to control the gas to flow in a fixed direction to prevent the gas from flowing back and affecting the inflation of the airbag 140.

[0083] Reference Figure 6 As shown, when the battery box 10 with low power is removed, the vehicle controller controls the first control valve 240 to be turned on, and the gas in the gas tank 220 enters the airbag 140 after passing through the first check valve 270, the first control valve 240 and the air pressure sensor 260 in sequence. Figure 2 As shown, the airbag 140 begins to expand after being inflated, driving the second connecting member 130 to move toward the battery box 10. The second connecting member 130 gradually approaches the locking member 110 during the movement. When the second connecting member 130 contacts the locking member 110, the second connecting member 130 exerts pressure on the locking member 110. Figure 2 The force in the positive direction of X or the reverse direction of X as shown by the middle arrow is used to push open the locking member 110, thereby continuing to move toward the battery box 10 until part of the second connecting member 130 abuts against the locking member 110. At this time, the vehicle controller controls the first control valve 240 to close and conducts the second control valve 250.

[0084] Reference Figure 3 and Figure 6 As shown, when the first connecting member 120 is directed toward the second connecting member 130 (i.e. Figure 3 When the first connecting member 120 moves in the opposite direction of Y as indicated by the arrow in the figure, part of the first connecting member 120 abuts against the second connecting member 130, and the first connecting member 120 can apply a force to the second connecting member 130 to push the second connecting member 130 to move synchronously in the opposite direction of Y. Thus, the second connecting member 130 squeezes the airbag 140, and part of the gas in the airbag 140 is discharged through the second control valve 250, and the volume of the airbag 140 is reduced until the first connecting member 120 and the second connecting member 130 are both separated from the locking member 110, thereby unlocking the battery box 10 and the frame 20.

[0085] In some embodiments, reference Figure 1 As shown, the airbag 140 is annular, and the axial direction of the airbag 140 is consistent with the extension direction of the first connecting member 120.

[0086] It can be understood that the airbag 140 is annular so that the airbag 140 can be sleeved on the first connecting member 120. And the axial direction of the airbag 140 is consistent with the extending direction of the first connecting member 120, that is, the axial direction of the airbag 140 is Figure 1 The Y direction indicated by the middle arrow, that is, the axial direction of the airbag 140 is consistent with the moving direction of the second connecting member 130 , so that the airbag 140 can drive the second connecting member 130 to rise and fall smoothly and evenly to avoid the second connecting member 130 from deflecting.

[0087] In some embodiments, reference Figure 4 As shown, the connection assembly 100 further includes a first support 160 and a second support 170 , wherein the first support 160 connects the airbag 140 and the frame 20 , and the second support 170 connects the airbag 140 and the second connection member 130 .

[0088] Specifically, a connection hole may be provided on the first support 160, and the first support 160 may be fixed to the frame 20 by screws through the connection hole on the first support 160, and then the airbag 140 may be connected to the first support 160 to achieve connection between the airbag 140 and the frame 20. One side of the second support 170 is connected to the airbag 140, and the other side is connected to the second connector 130, so as to achieve connection between the second connector 130 and the airbag 140.

[0089] A second through hole is disposed in the middle of the first support 160 , and a third through hole is disposed in the middle of the second support 170 for the first connecting member 120 to pass through, so that the first connecting member 120 can pass through the first support 160 , the airbag 140 , the second support 170 and the second connecting member 130 in sequence.

[0090] It should be noted that two fourth through holes are further provided on the first support 160 , one of which is used to connect the air inlet channel 151 with the air inlet hole 141 , and the other is used to connect the air outlet channel 152 with the air outlet hole 142 .

[0091] It should be noted that the first support 160 and the second support 170 may be annular or in other shapes, and the embodiment of the present application does not impose too many restrictions on this.

[0092] In some embodiments, reference Figure 1 As shown, the first connecting member 120 has a connecting portion 121 , and the connecting portion 121 is located in the battery box 10 . The locking member 110 and the connecting portion 121 together lock the battery box 10 to the vehicle frame 20 .

[0093] It can be understood that by providing the connecting portion 121 on the first connecting member 120 , the connecting portion 121 can work together with the locking member 110 to achieve locking of the battery box 10 and the vehicle frame 20 .

[0094] It should be noted that the shapes of the connecting portion 121 and the second connecting member 130 can be symmetrically arranged hemispherical. When the connecting portion 121 moves toward the second connecting member 130, the bottom surface of the connecting portion 121 can completely overlap with the bottom surface of the second connecting member 130, and the two are combined into a complete sphere. Since the second connecting member 130 is partially in contact with the locking member 110 at this time, the sphere can move relative to the locking member 110, so that the connecting portion 121 and the second connecting member 130 are away from the locking member 110, until the connecting portion 121 and the second connecting member 130 are both separated from the locking member 110, thereby realizing the unlocking of the battery box 10 and the frame 20.

[0095] In some embodiments, reference Figure 2 As shown, the second connecting member 130 is located between the airbag 140 and the connecting portion 121 . When the airbag 140 drives the second connecting member 130 to move toward the battery box 10 , the connecting portion 121 is driven to move toward the battery box 10 .

[0096] It can be understood that the second connecting member 130 is disposed between the airbag 140 and the connecting portion 121, that is, the connecting portion 121 is located at the second connecting member 130. Figure 1 When the air pressure system 200 inflates the airbag 140, the airbag 140 begins to expand after being inflated, thereby driving the second connecting member 130 toward the battery box 10 (i.e. Figure 2 The second connecting member 130 moves in the positive direction of Y in the middle, so that after the second connecting member 130 moves to abut against the connecting portion 121, it can push the connecting portion 121 to continue moving toward the battery box 10, thereby providing power for the connecting portion 121.

[0097] In some embodiments, reference Figure 1 As shown, the connection assembly 100 further includes a sleeve 180 , which is sleeved on a portion of the first connection member 120 , and the sleeve 180 is used to connect to the vehicle frame 20 .

[0098] The first connecting member 120 further has a partition 122 , which partitions the sleeve 180 into a first chamber 181 and a second chamber 182 .

[0099] The sleeve 180 has a first oil hole 183 and a second oil hole 184. The first oil hole 183 is connected to the first chamber 181, and hydraulic oil is injected into or flows out of the first chamber 181 through the first oil hole 183. The second oil hole 184 is connected to the second chamber 182, and hydraulic oil is injected into or flows out of the second chamber 182 through the second oil hole 184 to drive the partition 122 to move toward or away from the battery box 10.

[0100] The sleeve 180 is used to connect with the frame 20. For example, the sleeve 180 and the frame 20 can be connected by screws or in other ways. The shape of the sleeve 180 can be a rectangular parallelepiped, a cube, a cylinder, or other shapes. The embodiments of the present application do not impose too many restrictions on this.

[0101] Specifically, when hydraulic oil is injected into the second chamber 182 through the second oil hole 184, the pressure in the second chamber 182 increases to drive the partition 122 to move toward the battery box 10, that is, the first connecting member 120 moves toward the battery box 10. As a result, the volume of the second chamber 182 increases, the volume of the first chamber 181 decreases, and the hydraulic oil in the first chamber 181 is discharged through the first oil hole 183. When hydraulic oil is injected into the first chamber 181 through the first oil hole 183, the pressure in the first chamber 181 increases to drive the partition 122 to move away from the battery box 10, that is, the first connecting member 120 moves away from the battery box 10. As a result, the volume of the first chamber 181 increases, the volume of the second chamber 182 decreases, and the hydraulic oil in the second chamber 182 is discharged through the second oil hole 184.

[0102] It should be noted that, refer to Figure 1 , Figure 7 and Figure 8 As shown, the connection structure also includes a hydraulic system 300, which is electrically connected to the controller of the vehicle. The hydraulic system 300 includes an oil storage tank 310, an oil pump 320, an oil pipe 330 and a third control valve 340, the oil pipe 330 connects the oil storage tank 310, the oil pump 320 and the third control valve 340, and the third control valve 340 is connected to the first oil hole 183 and the second oil hole 184 through the oil pipe 330.

[0103] Reference Figure 2 and Figure 7 As shown, when disassembling the battery box 10 with low power, the vehicle controller controls the third control valve 340, conducts the hydraulic oil from the oil pump 320 into the circuit of the second chamber 182, conducts the hydraulic oil from the first chamber 181 into the circuit of the oil storage tank 310, and controls the hydraulic oil pump 320 to start working, and the hydraulic oil is drawn out from the oil storage tank 310 and flows into the second chamber 182. At the same time, the space of the first chamber 181 is compressed, and the hydraulic oil in the first chamber 181 is squeezed and flows into the oil storage tank 310. The partition 122 moves the first connecting member 120 toward the battery box 10 as a whole, and the locking member 110 loses its pre-tightening force. As the oil pump 320 continues to work, the first connecting member 120 continues to move toward the battery box 10 until the connecting portion 121 on the first connecting member 120 is separated from the locking member 110.

[0104] Reference Figure 6As shown, the vehicle controller controls the first control valve 240 to be turned on, and the gas in the gas tank 220 enters the airbag 140 after passing through the first one-way valve 270, the first control valve 240 and the air pressure sensor 260 in sequence. After being inflated, the airbag 140 begins to expand and drives the second connecting member 130 to move toward the battery box 10. The second connecting member 130 gradually approaches the locking member 110 during the movement. Until part of the second connecting member 130 abuts against the locking member 110, the vehicle controller controls the first control valve 240 to be closed and turns on the second control valve 250.

[0105] Next, refer to Figure 3 and Figure 8 As shown, the vehicle controller controls the third control valve 340, conducts the hydraulic oil from the oil pump 320 into the circuit of the first chamber 181, conducts the hydraulic oil from the second chamber 182 into the circuit of the oil storage tank 310, the oil pump 320 continues to work, and the partition 122 moves the first connecting member 120 as a whole toward the second connecting member 130, at which time the second connecting member 130 remains stationary until the connecting portion 121 on the first connecting member 120 abuts against the second connecting member 130. Since the second connecting member 130 partially abuts against the locking member 110, the connecting portion 121 and the second connecting member 130 can push open the locking member 110 and continue to move away from the battery box 10 until the connecting portion 121 and the second connecting member 130 are both separated from the locking member 110, thereby realizing the unlocking of the battery box 10 and the frame 20, the vehicle controller controls the oil pump 320 to stop working, and the battery box 10 can be smoothly taken out.

[0106] Reference Figure 1 and Figure 7 As shown, when the fully charged battery box 10 is installed, the connecting portion 121 on the first connecting member 120 is inserted into the battery box 10, and the second connecting member 130 and the airbag 140 are both located in the battery box 10. The vehicle controller controls the third control valve 340, conducts the hydraulic oil from the oil pump 320 into the circuit of the second chamber 182, and conducts the hydraulic oil from the first chamber 181 into the circuit of the oil storage tank 310, the oil pump 320 continues to work, the first connecting member 120 starts to move toward the battery box 10, the connecting portion 121 on the first connecting member 120 pushes open the locking member 110, and the vehicle controller controls the movement stroke of the first connecting member 120 so that the connecting portion 121 is located in the positive direction Y of the locking member 110. The vehicle controller controls the third control valve 340, conducts the hydraulic oil circuit from the oil pump 320 into the first chamber 181, and conducts the hydraulic oil circuit from the second chamber 182 into the oil storage tank 310, and the first connecting member 120 begins to move toward the locking member 110 until the connecting portion 121 on the first connecting member 120 contacts the locking member 110, and under the action of the hydraulic oil, the connecting portion 121 presses the locking member 110, so that the locking member 110 and the connecting portion 121 jointly lock the battery box 10 to the frame 20.

[0107] It should also be noted that an oil pressure sensor 350 may be provided on the oil pipe 330. On the one hand, the oil pressure sensor 350 can be used to detect the oil pressure condition in the hydraulic system 300. When the oil pressure sensor 350 detects that the pressure value reaches the target value, it indicates that the battery box 10 has been tightened and the oil pump 320 is turned off. On the other hand, when the hydraulic oil leaks, the driver or staff can be prompted in time to reduce the possibility of affecting the battery replacement due to the failure of the hydraulic system 300. A second one-way valve 360 ​​may also be provided on the oil pipe 330 to control the flow of hydraulic oil in a fixed direction to prevent the hydraulic oil from flowing back and affecting the locking angle or locking force.

[0108] In some embodiments, reference Figure 2 As shown, the locking member 110 may include a locking tongue 111, a spring 112 and a locking seat 113. The locking tongue 111 may include an abutting section and a threaded section. The abutting section is used to lock the battery box to the vehicle frame together with the connecting portion 121. The spring 112 is sleeved on the threaded section. The two ends of the spring 112 abut against the abutting section and the inner side wall of the battery box 10 respectively. The locking seat 113 is located outside the battery box 10. The locking seat 113 has an internal thread matching the threaded section. The locking seat 113 is screwed with the threaded section. The relative position of the locking seat 113 and the threaded section is adjusted by the thread, thereby limiting the length of the abutting section extending into the battery box 10. The driver can judge whether the battery box 10 has been locked by observing the position of the locking seat 113 in the threaded section; the driver can also manually try to pull out the locking seat 113. If the locking seat 113 can be pulled outward, the battery box 10 is not locked; an observation hole can also be opened on the battery box 10 to facilitate the observation of the relative position of the abutting section and the connecting portion 121.

[0109] When the vehicle has a serious fault and needs to detach the battery box 10, and the electric control system of the whole vehicle has been damaged, the driver or staff can manually adjust the third control valve 340 to conduct the hydraulic oil from the oil pump 320 into the circuit of the second chamber 182, and conduct the hydraulic oil from the first chamber 181 into the circuit of the oil storage tank 310. At this time, the first connecting member 120 is no longer subject to the hydraulic preload, and the lock seat 113 outside the battery box 10 can be pulled outward and tightened inward at the same time, so that the lock tongue 111 is out of contact with the first connecting member 120 and cannot return to its original position under the force of the spring 112. At this time, the battery box 10 and the frame 20 can be smoothly detached. When the above components are damaged, they can be conveniently replaced with spare parts.

[0110] The present application also provides a vehicle, comprising a vehicle body and a connection structure arranged on the vehicle body.

[0111] In some embodiments, the number of the connecting assembly 100 is at least one, and at least one connecting assembly 100 is disposed on the frame 20 of the vehicle body. The locking member 110 and a portion of the first connecting member 120 together lock the battery box 10 to the frame 20 .

[0112] For example, refer to Figure 7 and Figure 8 As shown, the number of the connection components 100 may be four, and the four connection components 100 may be divided into a first connection component 101 , a second connection component 102 , a third connection component 103 and a fourth connection component 104 .

[0113] The specific structure and working mode of the connection structure are described in detail in the above embodiments and will not be described in detail here.

[0114] It can be understood by those skilled in the art that the connection structure and the vehicle provided in the present application are used to connect the battery box 10 and the frame 20. The connection structure is provided by setting a connection assembly 100 and a pneumatic system 200. The connection assembly 100 includes a locking member 110, a first connection member 120, a second connection member 130 and an airbag 140. The pneumatic system 200 is connected to the airbag 140. The first connection member 120 is used to be provided on the frame 20, and a part of the first connection member 120 is inserted in the battery box 10, and the second connection member 130 and the airbag 140 are both located in the battery box 10. The locking member 110 is used to be inserted in the battery box 10, so as to lock the battery box 10 to the frame 20 together with a part of the first connection member 120.

[0115] When disassembling the battery box 10 with low power, the air pressure system 200 inflates the airbag 140 to drive the second connector 130 to move toward the battery box 10, so that the second connector 130 partially abuts against the locking member 110, and the first connector 120 moves toward the battery box 10 until it is disengaged from the locking member 110. Then, the first connector 120 moves toward the second connector 130 until both are disengaged from the locking member 110 to unlock the battery box 10 and the frame 20. When installing the fully charged battery box 10, the first connector 120 moves toward the battery box 10 until part of the first connector 120 and the locking member 110 jointly lock the battery box 10 to the frame 20. In this way, the replacement of the battery box 10 is completed, the operation is convenient, and the replacement efficiency of the battery box 10 is improved.

[0116] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0117] It should be understood that the various numerical numbers involved in the embodiments of the present application are only used for the convenience of description and are not used to limit the scope of the embodiments of the present application.

[0118] So far, the technical solutions of the present application have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present application.

Claims

1. A connection structure for connecting a battery box (10) and a vehicle frame (20), characterized in that: It comprises a connection assembly (100) and a pneumatic system (200); The connection assembly (100) comprises a locking member (110), a first connection member (120), a second connection member (130) and an airbag (140); the second connection member (130) and the airbag (140) are both sleeved on the first connection member (120); the first connection member (120) is used to be arranged on the vehicle frame (20), and a portion of the first connection member (120) is inserted into the battery box (10); the second connection member (130) and the airbag (140) are both located in the battery box (10); The locking member (110) is used to be inserted into the battery box (10) so as to lock the battery box (10) to the vehicle frame (20) together with part of the first connecting member (120); The air pressure system (200) is in communication with the air bag (140), and the air pressure system (200) is used to inflate the air bag (140) to drive the second connecting member (130) to move toward the battery box (10), so that the second connecting member (130) partially abuts against the locking member (110); The first connecting member (120) is configured to move toward the battery box (10) when the second connecting member (130) moves toward the battery box (10); and to move toward the second connecting member (130) when the second connecting member (130) partially abuts against the locking member (110) to abut against a portion of the second connecting member (130) to drive the second connecting member (130) to move away from the battery box (10) and to disengage from the locking member (110) with the second connecting member (130) to unlock the battery box (10) and the frame (20).

2. The connection structure according to claim 1, characterized in that: The connection assembly (100) further comprises a support seat (150), wherein the support seat (150) is connected to the vehicle frame (20), and an air inlet channel (151) and an air outlet channel (152) are provided on the support seat (150); The air bag (140) is provided with an air inlet (141) and an air outlet (142); the air inlet (141) is connected to the air pressure system (200) via the air inlet channel (151); and the air outlet (142) is connected to the air outlet channel (152).

3. The connection structure according to claim 2, characterized in that: The air pressure system (200) comprises an air pump (210), an air storage tank (220) and a pipeline (230); the pipeline (230) is connected with the air pump (210), the air storage tank (220) and the air inlet channel (151); the air storage tank (220) inflates air into the air inlet hole (141) through the pipeline (230) and the air inlet channel (151).

4. The connection structure according to claim 3, characterized in that: The air pressure system (200) further comprises a first control valve (240) and a second control valve (250), wherein the first control valve (240) is arranged between the air storage tank (220) and the air intake passage (151), and the first control valve (240) controls the air storage tank (220) to inflate air into the air intake passage (151); The second control valve (250) is connected to the air outlet channel (152) to control the exhaust of the air outlet channel (152).

5. The connection structure according to any one of claims 1 to 4, characterized in that: The airbag (140) is annular, and the axial direction of the airbag (140) is consistent with the extension direction of the first connecting member (120).

6. The connection structure according to claim 5, characterized in that: The connection assembly (100) further comprises a first support (160) and a second support (170), wherein the first support (160) connects the airbag (140) and the vehicle frame (20), and the second support (170) connects the airbag (140) and the second connection member (130).

7. The connection structure according to any one of claims 1 to 4, characterized in that: The first connecting member (120) has a connecting portion (121), the connecting portion (121) is located in the battery box (10), and the locking member (110) and the connecting portion (121) together lock the battery box (10) to the vehicle frame (20).

8. The connection structure according to claim 7, characterized in that: The second connecting member (130) is located between the airbag (140) and the connecting portion (121); when the airbag (140) drives the second connecting member (130) to move toward the battery box (10), it drives the connecting portion (121) to move toward the battery box (10).

9. The connection structure according to claim 7, characterized in that: The connecting assembly (100) further comprises a sleeve (180), wherein the sleeve (180) is sleeved on a portion of the first connecting member (120), and the sleeve (180) is used to be connected to the vehicle frame (20); The first connecting member (120) also has a partition (122), and the partition (122) divides the sleeve (180) into a first chamber (181) and a second chamber (182); The sleeve (180) has a first oil hole (183) and a second oil hole (184), the first oil hole (183) is connected to the first chamber (181), hydraulic oil is injected into or flows out of the first chamber (181) through the first oil hole (183), and the second oil hole (184) is connected to the second chamber (182), hydraulic oil is injected into or flows out of the second chamber (182) through the second oil hole (184), so as to drive the partition (122) to move toward or away from the battery box (10).

10. A vehicle, characterized in that: The invention comprises a vehicle body and a connection structure according to any one of claims 1 to 9 arranged on the vehicle body.

Images