Bushing assembly, battery pack mounting structure and power device

Abstract

The utility model relates to the technical field of new energy automobiles, in particular to a lining assembly, a battery pack mounting structure and a power device.The lining assembly comprises a lining, a guide cylinder, a battery fixing bolt and a limiting plate, the lining is provided with a first end and a second end which are oppositely arranged in the axial direction of the lining, and a stepped hole penetrating in the axial direction of the lining is formed in the lining; the guide cylinder is rotatably arranged in a large hole of the stepped hole, and a guide hole penetrating in the axial direction of the guide cylinder is formed in the guide cylinder; the battery fixing bolt sequentially penetrates through the guide hole and the small hole of the stepped hole, then penetrates out of the first end and is connected with the guide cylinder; the limiting plate is fixedly connected to the second end and used for bearing the guide cylinder. According to the bushing assembly, the battery fixing bolt and the bushing are integrated together and can be quickly connected to the battery transfer beam to form a battery pack assembly, so that the mounting and dismounting efficiency of the battery pack is improved, and the purpose of quickly replacing the battery pack is achieved.

Description

Technical Field

[0001] The present application relates to the field of new energy vehicle technology, and in particular to a bushing assembly, a battery pack mounting structure and a power device. Background Art

[0002] With the country's vigorous promotion of the new energy field, electric vehicles are becoming more and more popular among the public, but their long charging time has been criticized by consumers. The advantages of battery replacement technology are obvious. First, it can quickly replenish energy, so that drivers do not need to wait for a long time. They only need to replace the battery with a new one that has been charged. This not only improves the efficiency of the car, but also makes long-distance self-driving more convenient; secondly, the charging process of electric vehicles is unified, ensuring that each replacement battery is fully charged, extending the battery life.

[0003] In the prior art, the vehicle body mounting beam is connected to the vehicle body, the battery pack is connected to the battery transfer beam, an adapter block is provided between the vehicle body mounting beam and the battery transfer beam, and the battery transfer beam is sleeved with the bushing. When the battery pack needs to be installed, the vehicle body mounting beam remains stationary, the battery transfer beam moves from bottom to top and abuts against the adapter block, and the battery fixing bolt passes through the vehicle body mounting beam, the adapter block, the battery transfer beam and the bushing in turn and screws with the battery fixing nut to complete the fixation of the battery pack to the vehicle body. However, during the battery pack installation process, the various components need to be assembled in sequence, resulting in a cumbersome battery pack installation process, a long installation time, and an inability to quickly replace the battery pack to achieve rapid replenishment of electric energy.

[0004] In view of this, this application is specially filed. Utility Model Content

[0005] The present application provides a bushing assembly, a battery pack mounting structure and a power device to solve the problem of how to quickly replace the battery pack.

[0006] In one aspect, the present application provides a bushing assembly, comprising:

[0007] A bushing, used for connecting the battery transfer beam, the bushing having a first end and a second end arranged opposite to each other along its axial direction, and a stepped hole penetrating along its axial direction is formed inside the bushing;

[0008] A guide cylinder is rotatably disposed in the large hole of the stepped hole, and a guide hole is formed inside the guide cylinder and penetrates along the axial direction thereof; and

[0009] a battery fixing bolt, passing through the guide hole and the small hole of the stepped hole in sequence and then coming out from the first end, the battery fixing bolt being connected to the guide cylinder; and

[0010] A limiting plate is arranged opposite to the guide cylinder along the axial direction of the bushing and is fixedly connected to the second end, and is used for supporting the guide cylinder.

[0011] In some embodiments, the battery fixing bolt has a battery bolt flange, the outer wall of the battery bolt flange is circumferentially provided with positioning teeth, and the inner wall of the guide hole is circumferentially provided with internal teeth meshing with the positioning teeth.

[0012] In some embodiments, the bushing has a limiting cavity with an opening on one side, an anti-loosening paddle and a return spring are arranged in the limiting cavity, and two ends of the return spring are respectively connected to the anti-loosening paddle and the bushing;

[0013] One end of the anti-loosening paddle faces the guide cylinder and is provided with an anti-loosening tooth. The outer wall of the guide cylinder is provided with external teeth along the circumferential direction. The anti-loosening tooth engages with the external teeth through the opening.

[0014] In some embodiments, a communication port communicating with the limit cavity is formed on the limit plate, and a shifting port is formed on the anti-loosening paddle, and the shifting port is arranged opposite to the communication port.

[0015] In some embodiments, the other end of the anti-loosening paddle is provided with a mounting column extending in a direction away from the guide cylinder or in a direction away from the limiting plate, and one end of the return spring is sleeved on the mounting column.

[0016] In some embodiments, an operating hole connected to the large hole of the stepped hole is formed on the limiting plate, and the diameter of the operating hole is less than or equal to the outer diameter of the battery bolt flange.

[0017] In some embodiments, the operating hole is provided with a circle of limiting flange that is bent and extended toward the large hole of the stepped hole, and the guide tube is sleeved on the outer side of the limiting flange.

[0018] On the other hand, the present application also provides a battery pack installation structure, including:

[0019] A vehicle body mounting beam, used to connect the vehicle body, and a mounting hole is provided on the vehicle body mounting beam;

[0020] A battery transfer beam, used to connect the battery pack, and a transfer hole is provided on the battery transfer beam;

[0021] In the bushing assembly described above, the battery fixing bolt passes through the adapter hole and the mounting hole in sequence, and the first end passes through the adapter hole and abuts against the vehicle body mounting beam;

[0022] a bushing fixing nut, disposed on the battery adapter beam and engaged with the bushing thread, so that at least a portion of the battery adapter beam is clamped between the first end and the second end; and

[0023] A battery fixing nut is threadably matched with the battery fixing bolt so that at least a portion of the vehicle body mounting beam is clamped between the battery fixing nut and the first end.

[0024] In some embodiments, a pressing plate is provided on the vehicle body mounting beam, and first connecting holes are respectively provided on the vehicle body mounting beam and the pressing plate, and fasteners pass through the first connecting holes provided on the vehicle body mounting beam and the pressing plate in sequence, so that the vehicle body mounting beam and the pressing plate are fastened and connected;

[0025] The pressing plate is further provided with a second connection hole coaxially arranged with the mounting hole, and the battery fixing nut has a step, and after the battery fixing nut passes through the second connection hole, the pressing plate abuts against the step.

[0026] On the other hand, the present application also provides a power device, including the battery pack installation structure described above.

[0027] After adopting the above technical solution, the present application has the following beneficial effects compared with the prior art.

[0028] 1. The bushing assembly in the present application, the battery fixing bolt and the bushing are integrated together, so that the bushing assembly can be quickly connected to the battery transfer beam to form a battery pack assembly, which is beneficial to improve the installation and disassembly efficiency of the battery pack and achieve the purpose of quickly replacing the battery pack; the guide cylinder is rotatably arranged in the bushing and connected to the battery fixing bolt to achieve rotational cooperation between the battery fixing bolt and the battery fixing nut; the limit plate is arranged relative to the guide cylinder and fixedly connected to the bushing, which can not only prevent the guide cylinder and the battery fixing bolt from detaching from the bushing, but also protect the bushing assembly and extend its service life.

[0029] 2. In the battery pack installation structure of the present application, the bushing fixing nut cooperates with the bushing thread, so that the bushing assembly can be quickly connected to the battery transfer beam to form a battery pack assembly, and the battery fixing bolt passes through the transfer hole of the battery transfer beam and the mounting hole on the vehicle body mounting beam in sequence and cooperates with the battery fixing nut thread, making the replacement of the battery pack faster and more labor-saving.

[0030] 3. The power device in the present application includes the battery pack installation structure in the present application, and therefore also includes all the above-mentioned advantages of the battery pack installation structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is an exploded view of a bushing assembly in an embodiment of the present application;

[0032] Figure 2 is a bottom view of the bushing assembly with the limit plate removed in the embodiment of the present application;

[0033] Figure 3is a top view of a bushing assembly in an embodiment of the present application;

[0034] Figure 4 is a front view of the bushing assembly with the bushing removed in the embodiment of the present application;

[0035] Figure 5 yes Figure 4 Sectional view along AA direction;

[0036] Figure 6 is a front view of a battery pack assembly in an embodiment of the present application;

[0037] Figure 7 yes Figure 6 Cross-sectional view along the BB direction;

[0038] Figure 8 This is a front view of the battery pack installation structure in the embodiment of the present application;

[0039] Fig. 9 yes Figure 8 Sectional view along CC direction;

[0040] Fig.10 is a schematic diagram of the structure of the bushing in the embodiment of the present application;

[0041] Fig.11 It is a structural schematic diagram of the installation beam in an embodiment of the present application;

[0042] Fig.12 It is a schematic diagram of the structure of the battery fixing nut in the embodiment of the present application;

[0043] Fig.13 It is a schematic diagram of the structure of the pressure plate in the embodiment of the present application.

[0044] In the figure: 100, bushing assembly; 110, bushing; 111, first end; 112, second end; 113, stepped hole; 114, cylinder; 115, anti-rotation portion; 116, abutment portion; 117, limit cavity; 118, second limit hole; 120, guide cylinder; 121, guide hole; 122, inner teeth; 123, outer teeth; 130, battery fixing bolt; 131, battery bolt flange; 132, positioning teeth; 140, limit plate; 141, connecting port; 142, first limit hole; 143, operating hole; 150, anti-loosening pick; 151, anti Loose teeth; 152, mounting column; 153, toggle mouth; 160, return spring; 200, body mounting beam; 210, mounting hole; 220, first connecting hole; 300, battery transfer beam; 310, first cross plate; 320, second cross plate; 330, transfer hole; 400, bushing fixing nut; 500, battery fixing nut; 510, step; 520, main threaded hole; 600, pressure plate; 610, diamond hole; 620, first connecting hole; 700, fastener; 710, pressure plate fixing screw; 720, pressure plate fixing nut; 800, limiter. DETAILED DESCRIPTION

[0045] The technical solution of the present application will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0046] In the embodiment of the present application, a bushing assembly 100 is provided. For the specific structure of the bushing assembly 100, please refer to Figures 1 to 9 , which includes a bushing 110, a guide cylinder 120, a battery fixing bolt 130 and a limit plate 140, wherein the bushing 110 is used to connect the battery transfer beam 300, the battery transfer beam 300 is used to connect the battery pack, the bushing 110 has a first end 111 and a second end 112 arranged oppositely along its axial direction, and a stepped hole 113 is formed inside the bushing 110 along its axial direction; the guide cylinder 120 is rotatably arranged in the large hole of the stepped hole 113, and the guide cylinder 120 A guide hole 121 is formed inside and penetrates along its axial direction; the battery fixing bolt 130 passes through the guide hole 121 and the small hole of the stepped hole 113 in turn and then passes out from the first end 111, and is detachably connected to the guide cylinder 120; the limit plate 140 and the guide cylinder 120 are arranged opposite to each other along the axial direction of the bushing 110 and are fixedly connected to the second end 112, and the limit plate 140 is used to support the guide cylinder 120 to prevent the guide cylinder 120 and the battery fixing bolt 130 from detaching from the bushing 110.

[0047] According to the bushing assembly 100 of the application, the battery fixing bolt 130 is integrated with the bushing 110, so that the bushing assembly 100 can be quickly connected to the battery transfer beam 300 to form a battery pack assembly, which is beneficial to improve the installation and disassembly efficiency of the battery pack and realize the rapid replacement of the battery pack; the guide cylinder 120 is rotatably arranged in the bushing 110 and connected with the battery fixing bolt 130, so that the battery fixing bolt 130 and the battery fixing nut 500 can be rotated together; the battery fixing bolt 130 is an important connecting component, which is detachably connected to the guide cylinder 120. If the battery fixing bolt 130 is damaged, there is no need to replace the entire bushing assembly 100, but only need to replace the battery fixing bolt 130 separately, which not only reduces the use cost, but also improves the firmness of the connection between the battery pack and the vehicle body; the limit plate 140 is arranged opposite to the guide cylinder 120 and fixedly connected to the bushing 110, which can not only prevent the guide cylinder 120 and the battery fixing bolt 130 from being separated from the bushing 110, but also protect the bushing assembly 100 and extend its service life.

[0048] like Figure 1 and Figure 2 As shown, the battery fixing bolt 130 has a battery bolt flange 131, and the outer wall of the battery bolt flange 131 is circumferentially provided with positioning teeth 132, and the inner wall of the guide hole 121 is circumferentially provided with internal teeth 122 engaged with the positioning teeth 132. After the battery fixing bolt 130 is installed into the guide cylinder 120, the battery fixing bolt 130 is screwed by a bolt installation tool so that the positioning teeth 132 on the battery bolt flange 131 are engaged with the internal teeth 122 on the guide cylinder 120, ensuring that the battery fixing bolt 130 is firmly connected to the guide cylinder 120.

[0049] like Figures 6 to 9 As shown, an operating hole 143 with a large hole connected to the stepped hole 113 is opened on the limit plate 140. The operator can move the bolt installation tool into the guide hole 121 through the operating hole 143, and then further tighten the battery fixing bolt 130 to limit the fit with the guide cylinder 120 or loosen the battery fixing bolt 130 to separate it from the guide cylinder 120. The diameter of the operating hole 143 is less than or equal to the outer diameter of the battery bolt flange 131, which can not only support the guide cylinder 120 to prevent the guide cylinder 120 from detaching from the bushing 110, but also jam the battery fixing bolt 130 when the battery fixing bolt 130 is in an uninstalled state to prevent the battery fixing bolt 130 from falling out of the operating hole 143.

[0050] Preferably, a circle of limiting flange is provided at the operating hole 143 and is bent and extended into the large hole of the stepped hole 113. The guide cylinder 120 is sleeved on the outer side of the limiting flange. The limiting flange can effectively prevent the guide cylinder 120 from shaking along the radial direction of the bushing 110, thereby preventing the guide cylinder 120 from driving the battery fixing bolt 130 to shake.

[0051] like Figure 7 and Fig. 9 As shown, the bushing 110 has a limiting cavity 117 with an opening on one side, and an anti-loosening paddle 150 and a return spring 160 are arranged in the limiting cavity 117. The two ends of the return spring 160 are respectively connected to the anti-loosening paddle 150 and the bushing 110, and one end of the anti-loosening paddle 150 faces the guide cylinder 120 and is provided with an anti-loosening tooth 151. The outer wall of the guide cylinder 120 is circumferentially provided with external teeth 123, and the anti-loosening tooth 151 engages with the external teeth 123 through the opening. After the battery fixing bolt 130 and the guide cylinder 120 are limited and matched, the anti-loosening paddle 150 is moved by a toggling tool so that the anti-loosening tooth 151 of the anti-loosening paddle 150 is engaged with the external teeth 123 of the guide cylinder 120, thereby realizing the locking and anti-loosening functions; when the battery pack needs to be assembled or replaced, the anti-loosening paddle 150 is moved by a toggling tool so that the anti-loosening tooth 151 of the anti-loosening paddle 150 is separated from the external teeth 123 of the guide cylinder 120.

[0052] like Figure 3 , Figure 5 , Figure 7 and Fig. 9 As shown, a connecting port 141 connected to the limiting cavity 117 is provided on the limiting plate 140, and a shifting port 153 is provided on the anti-loosening pick 150. The shifting port 153 is arranged opposite to the connecting port 141. The operator can move the shifting tool into the connecting port 141 through the connecting port 141, and then further shift the anti-loosening pick 150 to limit or separate it from the guide cylinder 120.

[0053] like Figure 7 and Fig. 9 As shown, as an optional embodiment, the other end of the anti-loosening pick 150 is provided with a mounting column 152 extending in the direction away from the guide cylinder 120, and one end of the return spring 160 is sleeved on the mounting column 152, that is, the anti-loosening tooth 151 and the mounting column 152 are respectively arranged at the left and right ends of the anti-loosening pick 150. The operator can use a toggling tool to toggle the anti-loosening pick 150 left and right to engage or disengage the anti-loosening tooth 151 of the anti-loosening pick 150 with the outer teeth 123 of the guide cylinder 120.

[0054] like Figure 5As shown, as an optional embodiment, the other end of the anti-loosening pick 150 is provided with a mounting column 152 extending in a direction away from the limit plate 140, and one end of the return spring 160 is sleeved on the mounting column 152, that is, the anti-loosening teeth 151 and the guide cylinder 120 are arranged left and right, and the mounting column 152 is arranged at the upper end of the anti-loosening pick 150. The operator can push the anti-loosening pick 150 upward by using a toggle tool to separate the anti-loosening teeth 151 of the anti-loosening pick 150 from the outer teeth 123 of the guide cylinder 120; after releasing the anti-loosening pick 150, the return spring 160 in a compressed state resets and pushes the anti-loosening pick 150 downward, and the anti-loosening teeth 151 of the anti-loosening pick 150 engages with the outer teeth 123 of the guide cylinder 120, thereby achieving the purpose of anti-loosening and locking.

[0055] For the specific structure of the bushing 110, please refer to Figure 1 , Figures 6 to 9 It includes a cylinder 114 and an abutment portion 116 extending radially outward along the outer peripheral wall of the cylinder 114, the abutment portion 116 is close to the second end 112, and a stepped hole 113 is formed inside the cylinder 114 along its axial direction. The guide cylinder 120 is rotatably arranged in the large hole of the stepped hole 113, and the battery fixing bolt 130 passes through the guide hole 121 and the small hole of the stepped hole 113 in turn and then passes out from the first end 111. The abutment portion 116 abuts against the surface of the limiting plate 140 and is fixedly connected to the limiting plate 140, which can not only support the guide cylinder 120 and prevent the guide cylinder 120 and the battery fixing bolt 130 from detaching from the bushing 110, but also extend the service life of the bushing assembly 100.

[0056] like Figures 1 to 3 , Figure 7 , Fig. 9 As shown, a first limiting hole 142 is formed on the limiting plate 140, and a second limiting hole 118 is formed on the abutting portion 116. The limiting member 800 passes through the first limiting hole 142 and the second limiting hole 118 in sequence to fasten the limiting plate 140 and the bushing 110 to prevent the guide cylinder 120 and the battery fixing bolt 130 from being separated from the bushing 110, and to protect the bushing assembly 100 and extend its service life.

[0057] The present application also provides a battery pack installation structure. For the specific structure of the battery pack installation structure, please refer to Figure 8 and Fig. 9, which includes a body mounting beam 200, a battery adapter beam 300, the bushing assembly 100 described in the above embodiment, a bushing fixing nut 400 and a battery fixing nut 500, wherein the body mounting beam 200 is used to connect the body, and a mounting hole 210 is provided on the body mounting beam 200; the battery adapter beam 300 is used to connect the battery pack, and an adapter hole 330 is provided on the battery adapter beam 300; the battery fixing bolt 130 passes through the adapter hole 330 and the mounting hole 210 in sequence, and the first end 111 passes through the adapter hole 330 and abuts against the body mounting beam 200; the bushing fixing nut 400 is arranged on the battery adapter beam 300 and is threadedly matched with the bushing 110, so that at least a portion of the battery adapter beam 300 is clamped between the first end 111 and the second end 112; the battery fixing nut 500 is threadedly matched with the battery fixing bolt 130, so that at least a portion of the body mounting beam 200 is clamped between the battery fixing nut 500 and the first end 111.

[0058] According to the battery pack installation structure of the application, the bushing fixing nut 400 is threadedly matched with the bushing 110, so that the bushing assembly 100 is quickly connected to the battery transfer beam 300 to form a battery pack assembly, and the battery fixing bolt 130 sequentially passes through the transfer hole 330 of the battery transfer beam 300 and the mounting hole 210 on the body mounting beam 200 and is threadedly matched with the battery fixing nut 500, making the replacement of the battery pack faster and more labor-saving.

[0059] like Figures 4 to 9 As shown, the cylinder 114, the guide cylinder 120 and the battery fixing bolt 130 are coaxially arranged, and the stepped hole 113 and the guide hole 121 are coaxially arranged. When the rotating battery fixing nut 500 is screwed into or unscrewed with the battery fixing bolt 130, it is ensured that the guide cylinder 120 can rotate relative to the cylinder 114, thereby driving the battery fixing bolt 130 to rotate relative to the cylinder 114.

[0060] like Figure 8 , Fig. 9 , Fig.11 and Fig.13 As shown, a pressure plate 600 is provided on the vehicle body mounting beam 200, and first connecting holes 220 and 620 are respectively provided on the vehicle body mounting beam 200 and the pressure plate 600, and the fastener 700 passes through the first connecting holes 220 and 620 provided on the vehicle body mounting beam 200 and the pressure plate 600 in sequence to fasten the vehicle body mounting beam 200 and the pressure plate 600.

[0061] like Figure 8 , Fig. 9 , Fig.11 and Fig.13As shown, the fastener 700 includes a pressure plate fixing screw 710 and a pressure plate fixing nut 720, wherein the pressure plate fixing screw 710 passes through the first connecting holes 220 and 620 opened on the vehicle body mounting beam 200 and the pressure plate 600 in turn, and is threadedly matched with the pressure plate fixing nut 720 set on the pressure plate 600.

[0062] like Figure 8 , Fig. 9 and Figures 11 to 13 As shown, a second connecting hole coaxially arranged with the mounting hole 210 is also opened on the pressure plate 600, and the battery fixing nut 500 has a step 510. After the battery fixing nut 500 passes through the second connecting hole, the pressure plate 600 abuts against the step 510 to make the vehicle body mounting beam 200 and the bushing 110 press-fit, thereby preventing the battery fixing bolt 130 from rotating.

[0063] like Figures 11 to 13 As shown, the battery fixing nut 500 is a square nut, and the second connecting hole is a diamond hole 610 adapted to the square nut. There is a gap between the diamond hole 610 of the pressure plate 600 and the head step 510 of the square nut, so that the square nut has assembly activity and the ability to absorb assembly tolerances, thereby improving the applicability of the design.

[0064] like Figures 11 to 13 As shown, a main threaded hole 520 is provided at the upper end of the square nut, and an expansion hole connected to the main threaded hole 520 is provided at the lower end of the square nut, which is beneficial to the alignment, buckling and installation of the battery fixing bolt 130.

[0065] For the specific structure of the battery transfer beam 300, please refer to Figures 1 to 3 , which includes a first transverse plate 310 and a second transverse plate 320 spaced apart along the axial direction of the battery fixing bolt 130 , the first transverse plate 310 is provided with a first through hole, and the second transverse plate 320 is provided with a second through hole.

[0066] like Figures 6 to 9 and Fig.10 As shown, the bushing 110 also includes an anti-rotation portion 115 extending radially outward along the outer peripheral wall of the cylinder 114. The anti-rotation portion 115 is closer to the first end 111 than the abutment portion 116. The abutment portion 116 radially protrudes from the anti-rotation portion 115. The bushing 110 passes through the first through hole and the second through hole in sequence and is threadedly engaged with the bushing fixing nut 400. At least a portion of the second cross plate 320 is clamped between the bushing fixing nut 400 and the anti-rotation portion 115. The abutment portion 116 abuts on the first cross plate 310. The bushing 110 can be used to guide the bushing fixing nut 400 and the battery fixing nut 500 to ensure that the bushing fixing nut 400 is accurately engaged with the bushing 110 fixing bolt, and the battery fixing nut 500 is accurately engaged with the battery fixing bolt 130, thereby saving the operator's time in aligning the two and further improving the battery pack installation efficiency.

[0067] A power device is also provided in an embodiment of the present application, including the above-mentioned embodiment, which also includes all the advantages of the battery pack installation structure, which will not be repeated here.

[0068] The following describes the assembly and disassembly process of the installation structure of the battery pack according to the embodiment of the present application with reference to the accompanying drawings.

[0069] like Figure 6 and Figure 7 As shown, the bushing assembly 100 is connected to the battery transfer beam 300 to form a battery pack assembly. Specifically, the bushing 110 and the battery fixing bolt 130 pass through the first through hole of the first cross plate 310 and the second through hole on the second cross plate 320 from bottom to top, and are threadedly matched with the bushing fixing nut 400 arranged on the second cross plate 320. At least part of the second cross plate 320 is clamped between the bushing fixing nut 400 and the anti-rotation portion 115, and the abutment portion 116 is stopped on the first cross plate 310, so as to realize the rapid fixation of the bushing assembly 100 and the battery transfer beam 300, and facilitate the rapid installation of the battery pack to the vehicle body.

[0070] When the battery pack needs to be installed, the battery pack assembly is connected to the vehicle body mounting beam 200. Specifically, the vehicle body mounting beam 200 remains stationary, the battery pack assembly moves from bottom to top, the battery fixing bolt 130 passes through the mounting hole 210 on the vehicle body mounting beam 200 until the first end 111 of the bushing 110 stops at the vehicle body mounting beam 200, the battery fixing nut 500 is sleeved on the battery fixing bolt 130, and then the anti-loosening paddle 150 is moved to separate the anti-loosening teeth 151 of the anti-loosening paddle 150 from the outer teeth 123 of the guide cylinder 120, and then the battery fixing nut 500 is rotated to screw and engage with the battery fixing bolt 130 and tighten, and then the anti-loosening paddle 150 is moved to engage the anti-loosening teeth 151 of the anti-loosening paddle 150 with the outer teeth 123 of the guide cylinder 120, so as to achieve rapid fixation of the vehicle body mounting beam 200 and the battery pack assembly, and complete the fixation of the power battery pack and the vehicle body.

[0071] When the battery pack needs to be removed, the battery pack assembly is separated from the vehicle body mounting beam 200. Specifically, the anti-loosening paddle 150 is moved to separate the anti-loosening teeth 151 of the anti-loosening paddle 150 from the outer teeth 123 of the guide cylinder 120, and then the battery fixing nut 500 and the battery fixing bolt 130 are rotated in reverse to unscrew them, and the battery pack assembly is moved downward to quickly separate from the vehicle body mounting beam 200.

[0072] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0073] 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. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0074] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0075] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean 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 representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0076] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A bushing assembly, characterized in that: include: A bushing, used for connecting the battery transfer beam, the bushing having a first end and a second end arranged opposite to each other along its axial direction, and a stepped hole penetrating along its axial direction is formed inside the bushing; A guide cylinder is rotatably arranged in the large hole of the stepped hole, and a guide hole is formed inside the guide cylinder and penetrates along the axial direction thereof; a battery fixing bolt, passing through the guide hole and the small hole of the stepped hole in sequence and then coming out from the first end, the battery fixing bolt being connected to the guide cylinder; and A limiting plate is arranged opposite to the guide cylinder along the axial direction of the bushing and is fixedly connected to the second end, and is used for supporting the guide cylinder.

2. The bushing assembly according to claim 1, characterized in that The battery fixing bolt has a battery bolt flange, the outer wall of the battery bolt flange is circumferentially provided with positioning teeth, and the inner wall of the guide hole is circumferentially provided with internal teeth meshing with the positioning teeth.

3. The bushing assembly according to claim 1 or 2, characterized in that: The bushing has a limiting cavity with an opening on one side, an anti-loosening paddle and a return spring are arranged in the limiting cavity, and two ends of the return spring are respectively connected to the anti-loosening paddle and the bushing; One end of the anti-loosening paddle faces the guide cylinder and is provided with an anti-loosening tooth. The outer wall of the guide cylinder is provided with external teeth along the circumferential direction. The anti-loosening tooth engages with the external teeth through the opening.

4. The bushing assembly according to claim 3, characterized in that: The limit plate is provided with a communication port connected with the limit cavity, the anti-loosening paddle is provided with a shifting port, and the shifting port is arranged opposite to the communication port.

5. The bushing assembly according to claim 4, characterized in that The other end of the anti-loosening paddle is provided with a mounting column extending in a direction away from the guide cylinder or in a direction away from the limiting plate, and one end of the return spring is sleeved on the mounting column.

6. The bushing assembly according to claim 2, characterized in that The limiting plate is provided with an operating hole connected to the large hole of the stepped hole, and the diameter of the operating hole is less than or equal to the outer diameter of the battery bolt flange.

7. The bushing assembly according to claim 6, characterized in that The operation hole is provided with a circle of limiting flange which is bent and extended toward the large hole of the stepped hole, and the guide cylinder is sleeved on the outer side of the limiting flange.

8. A battery pack installation structure, characterized in that: include: A vehicle body mounting beam, used to connect the vehicle body, and a mounting hole is provided on the vehicle body mounting beam; A battery transfer beam, used to connect the battery pack, and a transfer hole is provided on the battery transfer beam; According to any one of claims 1 to 7, the battery fixing bolt passes through the adapter hole and the mounting hole in sequence, and the first end passes through the adapter hole to abut against the vehicle body mounting beam; a bushing fixing nut, disposed on the battery adapter beam and engaged with the bushing thread, so that at least a portion of the battery adapter beam is clamped between the first end and the second end; and A battery fixing nut is threadably matched with the battery fixing bolt so that at least a portion of the vehicle body mounting beam is clamped between the battery fixing nut and the first end.

9. The battery pack installation structure according to claim 8, characterized in that: A pressing plate is provided on the vehicle body mounting beam, and first connecting holes are respectively provided on the vehicle body mounting beam and the pressing plate, and fasteners pass through the first connecting holes provided on the vehicle body mounting beam and the pressing plate in sequence, so that the vehicle body mounting beam and the pressing plate are fastened and connected; The pressing plate is further provided with a second connection hole coaxially arranged with the mounting hole, and the battery fixing nut has a step, and after the battery fixing nut passes through the second connection hole, the pressing plate abuts against the step.

10. A power device, characterized in that: Comprising a battery pack mounting structure according to claim 8 or 9.

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