Bracket assembly, electric automobile and battery box locking method

Abstract

The invention discloses a bracket assembly, an electric automobile and a locking method of a battery box, the bracket assembly comprises a locking device and a locking mechanism, the locking device comprises the locking mechanism, the locking mechanism is movably connected to a bracket, and the locking mechanism can move in the direction close to or away from the battery box located on the bracket. And the battery box is prevented from moving on the bracket or the locking mechanism is prevented from being separated from the battery box. A lock tongue of the lock mechanism acts on a lock groove of the locking mechanism so as to fix the movement of the locking mechanism relative to the bracket; and the lock tongue is clamped with the lock groove so as to fix the movement of the locking mechanism relative to the bracket. The battery box and the locking mechanism of the locking device are arranged on the bracket, and the locking mechanism gets close to or away from the battery box, so that the locking mechanism locks or unlocks the battery box, and the battery box can be fixed or replaced conveniently. According to the locking device, the stability of the battery box can be improved, and the reliability of electric connection of the battery box can be improved.

Description

[0001] This application is a divisional of a Chinese invention patent application filed on March 17, 2020, with application number 202010188300.2 and titled “Locking device, bracket assembly, electric vehicle and locking method for battery box”. Technical Field

[0002] The invention relates to a bracket assembly, an electric vehicle and a locking method for a battery box. Background Art

[0003] With the development of society and the advancement of science and technology, electric vehicles are becoming more and more popular among consumers. As the power source of electric vehicles, battery boxes need to be charged in time. Due to the requirements of cruising range and power, the battery box power required for automobiles is getting higher and higher. The traditional charging method cannot meet the needs of some scenarios. The battery box needs to be replaced and placed on the charging rack for charging so that the vehicle can be used normally during the charging time. The battery-swap battery box (battery box assembly) consists of a battery box and a bracket. The battery box is placed on the bracket to fix the battery box and achieve stable and reliable electrical connection. In the prior art, for larger battery boxes, it is impossible to lock them accurately, which makes the cooperation between the battery box and the bracket unreliable or affects the efficiency of battery replacement. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defect of unreliable cooperation between the battery box and the bracket in the prior art, and to provide a bracket assembly, an electric vehicle and a locking method for the battery box.

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

[0006] A bracket assembly, the bracket assembly comprising a locking device and a locking mechanism;

[0007] The locking device includes a locking mechanism, which is movably connected to the bracket and can move in a direction close to or away from the battery box on the bracket to limit the movement of the battery box on the bracket or the locking mechanism is separated from the battery box;

[0008] The locking mechanism is arranged on the bracket, the locking mechanism acts on the locking device, and the locking mechanism is used to limit the locking device from moving in a direction away from the bracket;

[0009] The locking mechanism comprises at least one locking tongue, and the locking mechanism has at least one locking groove, the locking tongue corresponds to the locking groove one by one, and the locking tongue is used to act on the locking groove to fix the movement of the locking mechanism relative to the bracket;

[0010] The locking tongue is engaged with the locking groove to fix the movement of the locking mechanism relative to the bracket.

[0011] In this solution, by adopting the above structure, the battery box and the locking mechanism of the locking device are arranged on the bracket, and the locking mechanism is used to approach or move away from the battery box, so that the locking mechanism can lock or unlock the battery box, thereby facilitating the fixation or replacement of the battery box. The locking device of this solution is conducive to improving the stability of the battery box and the reliability of the electrical connection of the battery box.

[0012] The locking device is arranged in the bracket assembly, which is conducive to improving the stability of the battery box on the bracket and the reliability of the electrical connection of the battery box. The locking mechanism is fixed by the locking mechanism, which is conducive to avoiding the accidental movement of the locking mechanism and the battery box, and is conducive to improving the stability of the locking mechanism and the reliability of the bracket assembly. The locking mechanism is designed as a lock tongue and a corresponding lock groove, and the lock tongue and the lock groove interact with each other to achieve the fixation of the locking mechanism. It is conducive to simplifying the design form of the lock mechanism and improving the reliability of the lock mechanism. The lock tongue and the lock groove are used to engage with each other, which is conducive to improving the reliability of the lock mechanism.

[0013] Preferably, the locking mechanism includes a connecting component and a blocking component, one end of the connecting component is swingably connected to the bracket, and the blocking component is connected to the other end of the connecting component, and the blocking component is used to prevent the battery box from detaching from the bracket.

[0014] In this solution, by adopting the above structure, the connecting assembly and the blocking component are utilized, which is conducive to simplifying the design form of the locking mechanism and improving the reliability of the locking mechanism.

[0015] Preferably, the connecting assembly swings and drives the blocking component to apply a thrust to the battery box approaching the bracket.

[0016] In the present solution, by adopting the above structure, the swinging connecting assembly is used to drive the blocking component, so that the blocking component applies a thrust to the battery box, thereby making the battery box more firmly locked in the locked position, which is beneficial to improving the stability of the battery box and the reliability of the electrical connection of the battery box.

[0017] Preferably, the connecting assembly swings and drives the blocking component to move in a direction close to the battery box, so as to lock the battery box on the bracket.

[0018] In the present solution, by adopting the above structure, the blocking component is driven by the swinging connecting assembly, so that the blocking component is moved close to the battery box, and the battery box is more firmly locked in the locked position, which is beneficial to improve the stability of the battery box and the reliability of the electrical connection of the battery box.

[0019] Preferably, the connecting assembly is a multi-link mechanism, and the multi-link mechanism includes a plurality of swinging rods, and the plurality of swinging rods drive the blocking component to move by swinging.

[0020] In this solution, by adopting the above structure, multiple swing rods are used to drive the blocking component, which is conducive to simplifying the design of the multi-link mechanism, simplifying the design of the locking mechanism, and improving the reliability of the locking mechanism.

[0021] Preferably, the multi-link mechanism further comprises a connecting rod, the swing rod is connected to the blocking component via the connecting rod, and the connecting rod is used to drive the blocking component to move under the swing of the swing rod.

[0022] In this solution, by adopting the above structure, the movement of the connecting rod swing rod is transmitted to the blocking component, which is beneficial to simplify the design of the multi-link mechanism, simplify the design of the locking mechanism, and improve the reliability of the locking mechanism.

[0023] Preferably, when an external force acts on the multi-link mechanism, the blocking component is driven to move closer to the battery box through the swing rod and the connecting rod.

[0024] In the present solution, by adopting the above structure, the external force is converted into the power of the blocking component by utilizing the swing rod and the connecting rod, so that the blocking component tightly locks the battery box, which is conducive to simplifying the design form of the multi-link mechanism, simplifying the design form of the locking mechanism, and improving the reliability of the locking mechanism.

[0025] Preferably, when the multi-link mechanism is subjected to a vertical upward force, the multi-link mechanism drives the blocking component to move obliquely upward in a direction approaching the battery box.

[0026] Preferably, the connecting assembly is a four-bar linkage, the blocking component is connected to the bracket via the four-bar linkage, and the four-bar linkage is used to drive the blocking component to prevent the battery box from detaching from the bracket.

[0027] In this solution, by adopting the above structure, the multi-link mechanism is designed as a four-link mechanism, which is beneficial to improving the control of the movement trajectory of the blocking component and improving the reliability of the locking mechanism.

[0028] Preferably, the four-bar linkage drives the blocking component to apply a thrust to the battery box approaching the bracket.

[0029] In this solution, by adopting the above structure, the blocking component is driven by a four-bar linkage, thereby applying a time thrust to the battery box, which is beneficial to improving the stability of the battery box.

[0030] Preferably, the lock tongue includes a force-applying portion, a pivotal portion and a connecting portion which are sequentially connected to each other, the pivotal portion is pivotally connected to the bracket, the connecting portion can be inserted into and connected to the lock slot or retracted out of the lock slot, and the force-applying portion is used to apply a force to the lock tongue so that the lock tongue rotates relative to the pivotal portion.

[0031] In this solution, by adopting the above structure, the lock tongue is designed as a force-applying portion, a pivoting portion and a connecting portion, which is beneficial for applying external force to the lock tongue, improving the rotation flexibility of the lock tongue, and improving the reliability of the lock tongue.

[0032] Preferably, the outer side surface of the connecting part has a recessed portion, the inner side surface of the locking groove has a raised portion corresponding to the recessed portion, and the recessed portion is snapped into the raised portion; or, the outer side surface of the connecting part has a raised portion, the inner side surface of the locking groove has a recessed portion corresponding to the raised portion, and the recessed portion is snapped into the raised portion.

[0033] In this solution, by adopting the above structure, the recessed portion and the raised portion are engaged with each other, which is beneficial to further improve the reliability of the locking mechanism.

[0034] Preferably, the bracket is provided with a limiting hole, and the locking tongue is rotatably disposed in the limiting hole.

[0035] Preferably, the locking mechanism further comprises at least one locking beam, the locking beam is connected to the bracket, a limiting hole is provided in the locking beam, and the locking tongue is swingably connected in the limiting hole.

[0036] Preferably, the locking mechanism further includes a first driving mechanism and a push rod, wherein the push rod is connected to the lock tongue, and the first driving mechanism is used to drive the push rod to move the push rod along the length direction so that the lock tongue moves away from or is inserted into the lock slot.

[0037] Preferably, the lock tongue has a slide groove, the push rod is provided with a plug, the plug penetrates into the slide groove, and the plug acts on the slide groove to make the lock tongue swing.

[0038] Preferably, the locking device is movably connected to a side portion of the bracket.

[0039] In this solution, by adopting the above structure, the locking device is designed on the side of the bracket, and the locking mechanism can fix the battery box by moving the blocking component, which is beneficial to simplify the design form of the locking device and improve the reliability of the locking device.

[0040] Preferably, the bracket assembly further includes a connecting plate, and the locking mechanism is connected to the bracket via the connecting plate.

[0041] In this solution, by adopting the above structure, the locking mechanism is connected to the bracket by using a connecting plate, which is helpful to simplify the fixing form of the locking mechanism and improve the stability of the locking mechanism.

[0042] Preferably, the bracket assembly further comprises a limit block, wherein the limit block is arranged on a moving path of the locking mechanism in the bracket, and the limit block is used to limit a moving limit position of the locking mechanism during locking or unlocking.

[0043] In the present solution, by adopting the above structure, the limit block is used to limit the extreme position of the locking mechanism, so as to avoid the distance between the locking mechanism and the battery box being too small, which is beneficial to avoid the locking mechanism from pressing against the battery box too much, and is beneficial to improving the reliability of locking the battery box; it is also beneficial to avoid the distance between the locking mechanism and the battery box being too large, and is also beneficial to shortening the travel of the locking mechanism to lock the battery box, which is beneficial to improving the efficiency of the locking mechanism to lock the battery box.

[0044] Preferably, the bracket assembly further comprises a driving mechanism, and the driving mechanism is used to drive the movement of the locking mechanism.

[0045] In this solution, by adopting the above structure, the driving mechanism is used to realize the movement of the locking mechanism, which is helpful to simplify the process of locking the battery box and improve the efficiency of locking the battery box.

[0046] Preferably, the bracket assembly further includes a first sensor, which is used to detect a specific position of the battery box, and an output end of the first sensor is electrically connected to the driving mechanism.

[0047] In this solution, by adopting the above structure, the first sensor is used to detect the specific position of the battery box, and the output end of the first sensor is electrically connected to the driving mechanism, which is beneficial to improving the accuracy and reliability of battery box installation, and also beneficial to improving the automation level of battery box installation.

[0048] Preferably, the bracket assembly further includes a second sensor, and the second sensor is used to detect the locking state of the locking mechanism.

[0049] In this solution, by adopting the above structure, the second sensor is used to detect the state of the locking mechanism, which is beneficial to improving the reliability of battery box locking.

[0050] Preferably, the bracket assembly also includes a driving member, one end of the driving member is connected to the locking mechanism, and the other end of the driving member is located between the bracket and the battery box; the battery box is installed from the outside of the bracket to the inside of the bracket, and the battery box will abut against the driving member and be used to drive the driving member and the locking mechanism to move, so as to achieve the locking of the battery box on the bracket by the locking mechanism.

[0051] In this solution, by adopting the above structure, the movement of the battery box is converted into the movement of the locking mechanism by the driving member. While realizing the installation of the battery box, the locking mechanism also locks the battery box, which is beneficial to simplify the process of locking the battery box and improve the efficiency of the battery box installation.

[0052] An electric vehicle comprises the bracket assembly as described above.

[0053] In this solution, by adopting the above structure, the bracket assembly is arranged in the electric vehicle, which is beneficial to improving the safety and reliability of the battery box of the electric vehicle, and further beneficial to improving the safety and reliability of the electric vehicle.

[0054] A locking method for a battery box, which uses the locking device as described above, and the locking method for the battery box includes the following steps: placing the battery box at a first locking position on a bracket; controlling the locking mechanism to move toward the direction of the battery box on the bracket; controlling the locking mechanism to push the battery box to move to a second locking position; and controlling the locking mechanism to lock relative to the bracket.

[0055] In this solution, by adopting the above method, the locking mechanism of the locking device is moved in a direction close to or away from the battery box, so as to achieve locking or unlocking of the battery box on the bracket, which is beneficial to improve the stability of the battery box and the reliability of the electrical connection of the battery box.

[0056] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0057] The positive and progressive effects of the present invention are:

[0058] The present invention arranges the locking mechanism of the battery box and the locking device on the bracket, and uses the locking mechanism to approach or move away from the battery box, so that the locking mechanism can lock or unlock the battery box, thereby facilitating the fixing or replacement of the battery box. The locking device of the present invention is conducive to improving the stability of the battery box and the reliability of the electrical connection of the battery box. The locking device is arranged in the bracket assembly, which is conducive to improving the stability of the battery box on the bracket and the reliability of the electrical connection of the battery box. Using the locking mechanism to fix the locking mechanism is conducive to avoiding accidental movement of the locking mechanism, avoiding accidental movement of the battery box, improving the stability of the locking mechanism, and improving the reliability of the bracket assembly. The locking mechanism is designed as a lock tongue and a corresponding lock groove, and the lock tongue and the lock groove interact with each other to achieve the fixing of the locking mechanism. It is conducive to simplifying the design form of the lock mechanism and improving the reliability of the lock mechanism. Using the lock tongue and the lock groove to engage with each other is conducive to improving the reliability of the lock mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 Schematic diagram of the structure of the locking device of a preferred embodiment of the present invention.

[0060] Figure 2 It is a schematic structural diagram of a bracket assembly according to a preferred embodiment of the present invention.

[0061] Figure 3 The figure is a schematic top view of the structure of the bracket assembly according to a preferred embodiment of the present invention.

[0062] Figure 4 It is a schematic cross-sectional structural diagram of a bracket assembly according to a preferred embodiment of the present invention.

[0063] Figure 5 It is a schematic structural diagram of a lock tongue and a lock beam of a bracket assembly according to a preferred embodiment of the present invention.

[0064] Figure 6 It is a schematic structural diagram of a locking tongue of a bracket assembly according to a preferred embodiment of the present invention.

[0065] Figure 7 It is a schematic structural diagram of a blocking component of a bracket assembly according to a preferred embodiment of the present invention.

[0066] Figure 8 Another schematic structural diagram of the blocking component of the bracket assembly according to a preferred embodiment of the present invention.

[0067] Fig. 9 It is a schematic structural diagram of a push rod of a bracket assembly according to a preferred embodiment of the present invention.

[0068] Fig.10 The figure is a partial structural diagram of an electric vehicle according to a preferred embodiment of the present invention.

[0069] Description of reference numerals:

[0070] Locking device 100

[0071] Locking mechanism 10

[0072] Connecting components 11

[0073] Blocking member 12

[0074] Four-bar linkage 13

[0075] Swing rod 131

[0076] Connecting rod 132

[0077] Bracket assembly 200

[0078] Connecting plate 21

[0079] Bracket 22

[0080] Lock mechanism 30

[0081] Lock tongue 31

[0082] Force applying part 311

[0083] Pivot portion 312

[0084] Connection part 313

[0085] Chute 314

[0086] Lock slot 32

[0087] Protrusion 33

[0088] Depression 34

[0089] Limit hole 35

[0090] Lock beam 36

[0091] Putter 37

[0092] Plug 371

[0093] Limiting shaft 38

[0094] Battery Box 91

[0095] Chassis 92 DETAILED DESCRIPTION

[0096] The present invention will be described more clearly and completely below by way of embodiments in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments.

[0097] Figure 1 The locking device 100 is shown in the figure. For ease of understanding, the connecting plate 21 is also shown in the figure. It should be noted that the connecting plate 21 is not a component of the locking device 100. The locking device 100 is fixedly arranged on the connecting plate 21. Figure 2 The bracket assembly 200 includes Figure 1 The locking device 100 in the figure. For the convenience of explanation, the figure also shows a battery box 91. It should be noted that the battery box 91 is not a component of the bracket assembly 200. The locking device 100 is arranged on the bracket 22, and the locking mechanism 10 is connected to the bracket 22, and the locking mechanism 10 locks the battery box 91. Figure 3 and Figure 4 They are respectively a top view and a cross-sectional view of the bracket assembly 200 . Figure 5-Figure 9 Relevant components of the bracket assembly 200 are shown in detail. Fig.10 It is a partial schematic diagram of an electric vehicle. For the convenience of explanation, the figure only shows the bracket assembly 200, the battery box 91 and the chassis 92 of the electric vehicle.

[0098] like Figure 1 As shown, this embodiment is a locking device 100 . Figure 2 The locking device 100 is specifically shown in the figure to fix the battery box 91. For ease of understanding, this embodiment is combined with Figure 2 The locking device 100 includes a locking mechanism 10, which is movably connected to the bracket 22, and the locking mechanism 10 can move in a direction close to or away from the battery box 91 on the bracket 22 to limit the movement of the battery box 91 on the bracket 22 or the separation of the locking mechanism 10 from the battery box 91. In this embodiment, the battery box 91 and the locking mechanism 10 of the locking device 100 are arranged on the bracket 22, and the locking mechanism 10 is used to approach or move away from the battery box 91, so that the locking mechanism 10 locks or unlocks the battery box 91, thereby facilitating the fixation or replacement of the battery box 91. The locking device 100 of this embodiment is conducive to improving the stability of the battery box 91 and the reliability of the electrical connection of the battery box 91.

[0099] As a preferred embodiment, the locking mechanism 10 includes a connecting component 11 and a blocking component 12. One end of the connecting component 11 is swingably connected to the bracket 22, and the blocking component 12 is connected to the other end of the connecting component 11. The blocking component 12 is used to prevent the battery box 91 from detaching from the bracket 22. This embodiment will use the connecting component 11 and the blocking component 12, and the swingable connecting component 11 drives the blocking component 12 to move in a direction away from the battery box 91 or close to the battery box 91, which is conducive to simplifying the design of the locking mechanism 10 and improving the reliability of the locking mechanism 10. Specifically, the blocking component 12 can be designed as Figure 1 The flap in the .

[0100] As a preferred embodiment, the connection assembly 11 swings and drives the blocking component 12 to apply a thrust to the battery box 91 close to the bracket 22. In this embodiment, the swinging connection assembly 11 drives the blocking component 12, so that the blocking component 12 applies a thrust to the battery box 91, thereby locking the battery box 91 more stably in the locking position, which is beneficial to improving the stability of the battery box 91 and improving the reliability of the electrical connection of the battery box 91.

[0101] In order to improve the stability of the battery box 91, the connection assembly 11 swings and drives the blocking component 12 to move in a direction close to the battery box 91, so as to achieve locking of the battery box 91 on the bracket 22. In this embodiment, the swinging connection assembly 11 drives the blocking component 12, so that the blocking component 12 is close to the battery box 91, and the battery box 91 is locked in the locking position more stably, which is conducive to improving the stability of the battery box 91 and the reliability of the electrical connection of the battery box 91.

[0102] As a preferred embodiment, the connecting assembly 11 is a multi-link mechanism, which includes a plurality of swinging rods 131, and the plurality of swinging rods 131 drive the blocking member 12 to move by swinging. In this embodiment, the plurality of swinging rods 131 are used to drive the blocking member 12, which is conducive to simplifying the design form of the multi-link mechanism, simplifying the design form of the locking mechanism 10, and improving the reliability of the locking mechanism 10.

[0103] As a preferred embodiment, the multi-link mechanism further includes a connecting rod 132, through which the swing rod 131 is connected to the blocking component 12, and the connecting rod 132 is used to drive the blocking component 12 to move under the swing of the swing rod 131. In this embodiment, the movement of the swing rod 131 is transmitted to the blocking component 12 by using the connecting rod 132, which is conducive to simplifying the design form of the multi-link mechanism, simplifying the design form of the locking mechanism 10, and improving the reliability of the locking mechanism 10.

[0104] As a preferred embodiment, when the multi-link mechanism is under the action of external force, the swing rod 131 and the connecting rod 132 drive the blocking component 12 to move closer to the battery box 91. This embodiment uses the swing rod 131 and the connecting rod 132 to convert the external force into the power of the blocking component 12, so that the blocking component 12 tightly locks the battery box 91, which is conducive to simplifying the design form of the multi-link mechanism, simplifying the design form of the locking mechanism 10, and improving the reliability of the locking mechanism 10.

[0105] As a preferred embodiment, when the multi-link mechanism is subjected to a vertical upward force, the multi-link mechanism drives the blocking component 12 to move obliquely upward in a direction close to the battery box 91 .

[0106] In other embodiments, the external force may also directly act on the blocking component 12, and the multi-link mechanism is used to pull the blocking component 12 so that the blocking component 12 moves in a direction close to the battery box 91. As a preferred embodiment, the external force acts on the blocking component 12 in a vertically upward direction, and the multi-link mechanism is used to pull the blocking component 12 so that the blocking component 12 moves in a direction obliquely upward and close to the battery box 91.

[0107] As a specific implementation, the connecting assembly 11 is a four-bar linkage 13, and the blocking component 12 is connected to the bracket 22 through the four-bar linkage 13. The four-bar linkage 13 is used to drive the blocking component 12 to prevent the battery box 91 from detaching from the bracket 22. In this embodiment, the multi-bar linkage is designed as a four-bar linkage 13, which is conducive to improving the control of the motion trajectory of the blocking component 12 and improving the reliability of the locking mechanism 10.

[0108] In order to improve the stability of the battery box 91, the four-bar linkage 13 drives the blocking component 12 to apply a thrust to the battery box 91 close to the bracket 22. In this embodiment, the four-bar linkage 13 drives the blocking component 12 to apply a thrust to the battery box 91, which is beneficial to improve the stability of the battery box 91. In other embodiments, the multi-bar linkage can also be a three-bar linkage, a five-bar linkage, a cam mechanism, etc., all of which can achieve the effect of fixing the battery box 91.

[0109] like Figure 2-Figure 4 As shown, this embodiment is a bracket assembly 200, which includes the above locking device 100. In this embodiment, the locking device 100 is arranged in the bracket assembly 200, which is beneficial to improve the stability of the battery box 91 on the bracket 22 and the reliability of the electrical connection of the battery box 91.

[0110] In order to improve the reliability of the bracket assembly 200, the bracket assembly 200 further includes a locking mechanism 30, which is disposed on the bracket 22 and acts on the locking device 100. The locking mechanism 30 is used to limit the locking device 100 from moving in a direction away from the bracket 22. In this embodiment, the locking mechanism 30 is used to fix the locking mechanism 10, which is conducive to preventing the locking mechanism 10 from moving accidentally, preventing the battery box 91 from moving accidentally, improving the stability of the locking mechanism 10, and improving the reliability of the bracket assembly 200.

[0111] As a preferred embodiment, the lock mechanism 30 includes at least one lock tongue 31, and the locking mechanism 10 has at least one lock slot 32. The lock tongue 31 corresponds to the lock slot 32 one by one, and the lock tongue 31 is used to act on the lock slot 32 to fix the movement of the locking mechanism 10 relative to the bracket 22. In this embodiment, the lock mechanism 30 is designed as a lock tongue 31 and a corresponding lock slot 32, and the lock tongue 31 interacts with the lock slot 32 to achieve the fixation of the locking mechanism 10. It is beneficial to simplify the design form of the lock mechanism 30 and to improve the reliability of the lock mechanism 30. In this embodiment, the lock slot 32 is set on the blocking component 12. In other embodiments, the lock slot 32 can also be set at other positions of the locking mechanism 10.

[0112] As a specific implementation method, Figure 5 As shown, the lock tongue 31 includes a force-applying portion 311, a pivoting portion 312, and a connecting portion 313 that are sequentially connected to each other, the pivoting portion 312 is pivoted to the bracket 22, the connecting portion 313 can be inserted into and connected to the lock slot 32 or retracted outside the lock slot 32, and the force-applying portion 311 is used to apply a force to the lock tongue 31 so that the lock tongue 31 rotates relative to the pivoting portion 312. In this embodiment, the lock tongue 31 is designed as the force-applying portion 311, the pivoting portion 312, and the connecting portion 313, which is conducive to applying an external force to the lock tongue 31, improving the flexibility of the rotation of the lock tongue 31, and improving the reliability of the lock tongue 31.

[0113] In order to improve the reliability of the lock mechanism 30, the lock tongue 31 is engaged with the lock groove 32 to fix the movement of the lock mechanism 10 relative to the bracket 22. In this embodiment, the lock tongue 31 and the lock groove 32 are engaged with each other, which is conducive to improving the reliability of the lock mechanism 30.

[0114] As a preferred embodiment, the outer side surface of the connecting portion 313 has a recessed portion 34, and the inner side surface of the locking groove 32 has a protrusion 33 corresponding to the recessed portion 34, and the recessed portion 34 is snapped on the protrusion 33. In other embodiments, the outer side surface of the connecting portion 313 may also have a protrusion 33, and the inner side surface of the locking groove 32 has a recessed portion 34 corresponding to the protrusion 33, and the recessed portion 34 is snapped on the protrusion 33. This embodiment uses the recessed portion 34 and the protrusion 33 to snap together, which is conducive to further improving the reliability of the lock mechanism 30.

[0115] In order to facilitate the installation of the locking tongue 31 , a limiting hole 35 is provided on the bracket 22 , and the locking tongue 31 is rotatably disposed in the limiting hole 35 .

[0116] As a preferred implementation, Figure 3-Figure 5 As shown, the lock mechanism 30 further includes at least one lock beam 36, the lock beam 36 is connected to the bracket 22, a limit hole 35 is provided in the lock beam 36, and the lock tongue 31 is swingably connected in the limit hole 35. In this embodiment, both ends of the lock beam 36 are connected to the bracket 22.

[0117] In order to facilitate the operation of the locking mechanism 30, Figure 3-Figure 9 As shown, the locking mechanism 10 further includes a first driving mechanism and a push rod 37, the push rod 37 is connected to the lock tongue 31, and the first driving mechanism is used to drive the push rod 37 to move the push rod 37 along the length direction so that the lock tongue 31 is away from or inserted into the lock groove 32. As an embodiment, the first driving mechanism can be a linear driving device such as a cylinder assembly, a linear motor assembly, etc. Of course, the push rod 37 can also be driven manually.

[0118] As a specific implementation method, Figure 6 and Fig. 9 As shown, the locking tongue 31 has a sliding groove 314, and the push rod 37 is provided with a plug 371, which penetrates into the sliding groove 314, and the plug 371 acts on the sliding groove 314 to make the locking tongue 31 swing.

[0119] As a preferred embodiment, the locking device 100 is movably connected to the side of the bracket 22. In this embodiment, the locking device 100 is designed on the side of the bracket 22, and the locking mechanism 10 can fix the battery box 91 by moving the blocking component 12, which is conducive to simplifying the design of the locking device 100 and improving the reliability of the locking device 100. In other embodiments, the locking device 100 can also be installed at other parts of the bracket 22.

[0120] In order to facilitate the installation of the locking mechanism 10 on the bracket 22, the bracket assembly 200 further includes a connecting plate 21, and the locking mechanism 10 is connected to the bracket 22 via the connecting plate 21. In this embodiment, the locking mechanism 10 is connected to the bracket 22 using the connecting plate 21, which is conducive to simplifying the fixing form of the locking mechanism 10 and improving the stability of the locking mechanism 10.

[0121] As a specific implementation method, Figure 1-Figure 9 As shown, the locking device 100 is installed on the bracket 22 through the connecting plate 21, and the multi-link mechanism includes a first link, a second link, and a third link. One end of the first link and the second link are swingably disposed on the connecting plate 21, respectively, and both ends of the third link are rotatably connected to the other ends of the first link and the second link, respectively. The length of the first link is smaller than that of the second link, and the distance between the first link and the blocking component 12 is smaller than that between the second link and the blocking component 12, and the third link is fixedly connected to the blocking component 12. By swinging the first link or the second link, the third link is driven to swing, thereby driving the blocking component 12 to approach and press the battery box 91, thereby achieving the locking of the battery box 91. Since the length of the first connecting rod is smaller than that of the second connecting rod, and the distance between the first connecting rod and the blocking component 12 is smaller than that between the second connecting rod and the blocking component 12, a relatively large force can be generated on the first connecting rod by applying a relatively small force to the second connecting rod, and the relatively large force is transmitted to the blocking component 12 via the third connecting rod, thereby generating a relatively large squeezing force on the battery box 91, thereby locking the battery box 91. In other embodiments, the multi-link mechanism can also be a three-link mechanism, a five-link mechanism, a cam-link mechanism, etc., all of which can achieve the effect of fixing the battery box 91.

[0122] One end of the two swinging rods 131 of the four-bar linkage 13 is swingably connected to the connecting plate 21, and the other end is connected to the connecting rod 132. The blocking component 12 is arranged at the end of the connecting rod 132. The length of the swinging rod 131 close to the blocking component 12 is less than the length of the other swinging rod 131, so that the blocking component 12 can rotate around a smaller rotation radius, and when the battery box 91 is pressed, the inner side surface of the blocking component 12 is almost vertical, so that the blocking component 12 can better abut the battery box 91. Specifically, when the battery box 91 moves to the bracket 22, the swinging rod 131 starts to rotate, thereby driving the connecting rod 132 to move, and then driving the blocking component 12 to approach and press the battery box 91, thereby achieving the locking of the battery box 91.

[0123] The lock mechanism 30 of the bracket assembly 200 includes a lock tongue 31 and a lock slot 32 disposed in the blocking member 12. The push rod 37 and the lock beam 36 of the bracket assembly 200 are disposed on the bracket 22. By inserting the limit rotation shaft 38 into the limit hole 35, the lock tongue 31 is fixed in the lock beam 36, and the lock tongue 31 can rotate around the limit rotation shaft 38. The push rod 37 is disposed on the bracket 22, and the push rod 37 can reciprocate along the direction of its axis. The plug 371 of the push rod 37 is inserted into the slide slot 314 of the lock tongue 31, and the lock tongue 31 can rotate around the limit rotation shaft 38. Figure 3 , Figure 4 , Figure 6 and Figure 8 When the push rod 37 moves to the left to the end point, the plug 371 is located at the left end of the slide slot 314, and at this time, the recessed portion 34 of the lock tongue 31 leaves the protruding portion 33 in the lock slot 32. When the push rod 37 moves to the right, the plug 371 of the push rod 37 abuts against the outer side of the slide slot 314, thereby pushing the lock tongue 31 to rotate clockwise around the limit rotation shaft 38, and then the recessed portion 34 of the lock tongue 31 approaches and clamps the protruding portion 33 in the lock slot 32. When the push rod 37 moves to the right to the end point, the plug 371 is located at the right end of the slide slot 314, that is, close to the end of the limit rotation shaft 38. The recessed portion 34 of the lock tongue 31 completely clamps the protruding portion 33 in the lock slot 32, so that the lock mechanism 30 limits the movement of the blocking component 12, and the locking device 100 is fixed. When the push rod 37 moves from right to left, the plug 371 of the push rod 37 abuts against the lower side of the slide slot 314, thereby pushing the lock tongue 31 to rotate counterclockwise around the limit rotation shaft 38, and then the recessed portion 34 of the lock tongue 31 slides out and away from the protruding portion 33 in the lock slot 32. When the push rod 37 moves to the left to the end point, the plug 371 is located at the left end of the slide slot 314, and the recessed portion 34 of the lock tongue 31 completely disengages from the protruding portion 33 in the lock slot 32, so that the lock mechanism 30 releases the restriction on the movement of the blocking component 12, and the blocking component 12 can be away from the battery box 91. The above description of counterclockwise, clockwise, orientation and corresponding effects is only relative to Figure 3 , Figure 4 , Figure 6 and Figure 8In other figures or embodiments, the counterclockwise, clockwise, orientation and corresponding effects may be different from the above description.

[0124] As a preferred embodiment, the bracket assembly 200 also includes a limit block, which is arranged on the moving path of the locking mechanism 10 in the bracket 22, and the limit block is used to limit the moving limit position of the locking mechanism 10 during the locking or unlocking process. In this embodiment, the limit block is used to limit the limit position of the locking mechanism 10 to avoid the distance between the locking mechanism 10 and the battery box 91 being too small, which is beneficial to avoid the locking mechanism 10 from abutting against the battery box 91 with too much force, and is beneficial to improve the reliability of locking the battery box 91; it is also beneficial to avoid the distance between the locking mechanism 10 and the battery box 91 being too large, and it is also beneficial to shorten the travel of the locking mechanism 10 to lock the battery box 91, which is beneficial to improve the efficiency of the locking mechanism 10 to lock the battery box 91.

[0125] As a preferred embodiment, the bracket assembly 200 further includes a driving mechanism, which is used to drive the movement of the locking mechanism 10. This embodiment uses the driving mechanism to achieve the movement of the locking mechanism 10, which is conducive to simplifying the process of locking the battery box 91 and improving the efficiency of locking the battery box 91.

[0126] In other embodiments, the driving mechanism may be a lifting mechanism, and the lifting mechanism is used to push the locking mechanism 10 to lock the battery box 91 on the bracket 22 .

[0127] In order to improve the automation level of the bracket assembly 200, the bracket assembly 200 further includes a first sensor, which is used to detect the specific position of the battery box 91, and the output end of the first sensor is electrically connected to the drive mechanism. In this embodiment, the first sensor is used to detect the specific position of the battery box 91, and the output end of the first sensor is electrically connected to the drive mechanism, which is conducive to improving the accuracy and reliability of the installation of the battery box 91, and is also conducive to improving the automation level of the installation of the battery box 91.

[0128] As a specific implementation, the first sensor can be electrically connected to the drive mechanism. When the battery box 91 is installed on the bracket 22, the first sensor is used to detect the specific position of the battery box 91. When the battery box 91 is in the locked position, the first sensor will send a locked signal to the electric vehicle, and the electric vehicle will send a start signal to the drive mechanism. After the drive mechanism receives the signal, the drive mechanism is used to drive the locking mechanism 10 away from or close to the battery box 91, so that the locking mechanism 10 abuts against the side of the battery box 91, thereby achieving the locking of the battery box 91. The first sensor can be an infrared sensor, a laser sensor, or a photoelectric sensor, etc., all of which can be used in this embodiment.

[0129] In order to further improve the automation level of the bracket assembly 200, the bracket assembly 200 further includes a second sensor, which is used to detect the locking state of the locking mechanism 10. This embodiment uses the second sensor to detect the state of the locking mechanism 10, which is conducive to improving the reliability of the battery box 91 locking.

[0130] As a specific embodiment, when the battery box 91 is installed on the bracket 22 body, the second sensor is used to send a position signal to the locking mechanism 10. After the locking mechanism 10 receives the position signal, the locking mechanism 10 stops, and the locking mechanism 10 abuts against the battery box 91, so that the battery box 91 is locked on the bracket 22. In other embodiments, a monitoring point of the second sensor can also be set on the locking mechanism 10, and the second sensor is set on the driving mechanism. When the locking mechanism 10 moves to a preset position, that is, when the monitoring point reaches the preset position, the second sensor senses the monitoring point, and the second sensor is used to send a stop signal to the driving mechanism. After the driving mechanism receives the stop signal, the driving mechanism stops, and the locking mechanism 10 stops moving accordingly, so as to achieve the locking of the battery box 91. The second sensor can also be an infrared sensor, a laser sensor, or a photoelectric sensor, etc., which can be used in this embodiment.

[0131] As a preferred embodiment, the bracket assembly 200 further includes a driving member, one end of which is connected to the locking mechanism 10, and the other end of which is located between the bracket 22 and the battery box 91; the battery box 91 is installed from the outside of the bracket 22 to the inside of the bracket 22, and the battery box 91 will abut against the driving member and be used to drive the driving member and the locking mechanism 10 to move, so as to achieve the locking of the battery box 91 on the bracket 22 by the locking mechanism 10. In this embodiment, the driving member is used to convert the movement of the battery box 91 into the movement of the locking mechanism 10, and while achieving the installation of the battery box 91, the locking of the battery box 91 by the locking mechanism 10 is also achieved, which is conducive to simplifying the locking process of the battery box 91 and improving the efficiency of the installation of the battery box 91. In this embodiment, the driving mechanism can be a hydraulic transmission assembly, a cylinder assembly, etc., and the hydraulic rod of the hydraulic transmission assembly or the piston of the cylinder assembly drives the connecting member 11 or the blocking member 12 to move. It is also possible to rotate the driving rotating shaft of the multi-link mechanism 113 to drive the locking mechanism 10. Alternatively, a motor may be used to drive a gear, and a corresponding gear or rack may be sleeved on the driving rotating shaft.

[0132] like Fig.10 As shown, this embodiment is an electric vehicle, comprising the above bracket assembly 200. In this embodiment, the bracket assembly 200 is arranged in the electric vehicle, which is beneficial to improving the safety and reliability of the battery box 91 of the electric vehicle, and further beneficial to improving the safety and reliability of the electric vehicle.

[0133] A method for locking a battery box, the method for locking a battery box using the locking device 100 as described above, comprises the following steps:

[0134] The battery box 91 is placed in the first locking position on the bracket 22. The battery box 91 is placed in the first locking position on the bracket 22 by the battery box taking and placing mechanism.

[0135] The locking mechanism 10 is controlled to move toward the direction of the battery box 91 on the bracket 22. The blocking component 12 is driven by the driving mechanism to move toward the direction of the battery box 91. Driven by the connecting assembly 11 of the locking mechanism 10, the blocking component 12 moves obliquely upward toward the battery box 91 and applies a thrust to the battery box 91.

[0136] The locking mechanism 10 is controlled to push the battery box 91 to move to the second locking position. The battery box 91 moves to the second locking position under the thrust of the blocking member 12, and the electrical connection socket of the battery box 91 is electrically connected to the electrical connection plug on the bracket 22.

[0137] The locking mechanism 10 is controlled to be locked relative to the bracket 22. The locking mechanism 30 on the driving bracket 22 is fixedly connected to the blocking member 12 on the bracket 22 to limit the blocking member 12 from moving in a direction away from the battery box 91.

[0138] The locking mechanism 10 moves in a direction approaching or away from the battery box 91 on the bracket 22 to limit the movement of the battery box 91 on the bracket 22 or the locking mechanism 10 is separated from the battery box 91. In this embodiment, the locking mechanism 10 of the locking device 100 is moved in a direction approaching or away from the battery box 91 to achieve locking or unlocking of the battery box 91 on the bracket 22, which is beneficial to improving the stability of the battery box 91 and the reliability of the electrical connection of the battery box 91.

[0139] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A bracket assembly, characterized in that: The bracket assembly includes a locking device and a locking mechanism; The locking device includes a locking mechanism, which is movably connected to the bracket and can move in a direction close to or away from the battery box on the bracket to limit the movement of the battery box on the bracket or the locking mechanism is separated from the battery box; The locking mechanism is arranged on the bracket, the locking mechanism acts on the locking device, and the locking mechanism is used to limit the locking device from moving in a direction away from the bracket; The locking mechanism comprises at least one locking tongue, and the locking mechanism has at least one locking groove, the locking tongue corresponds to the locking groove one by one, and the locking tongue is used to act on the locking groove to fix the movement of the locking mechanism relative to the bracket; The locking tongue is engaged with the locking groove to fix the movement of the locking mechanism relative to the bracket.

2. The bracket assembly according to claim 1, characterized in that: The locking mechanism includes a connecting component and a blocking component, one end of the connecting component is swingably connected to the bracket, and the blocking component is connected to the other end of the connecting component, and the blocking component is used to prevent the battery box from detaching from the bracket.

3. The locking device according to claim 2, characterized in that: The connecting assembly swings and drives the blocking component to apply a thrust force to the battery box to approach the bracket; Alternatively, the connecting assembly swings and drives the blocking component to move in a direction close to the battery box, so as to lock the battery box on the bracket.

4. The bracket assembly according to claim 2, characterized in that: The connecting assembly is a multi-link mechanism, and the multi-link mechanism includes a plurality of swinging rods, and the plurality of swinging rods drive the blocking component to move by swinging; Preferably, the bracket assembly satisfies one or more of the following conditions: a1. The multi-link mechanism further includes a connecting rod, through which the swing rod is connected to the blocking component, and the connecting rod is used to drive the blocking component to move under the swing of the swing rod; b1. When the multi-link mechanism is acted upon by an external force, the blocking component is driven by the swing rod and the connecting rod to move closer to the battery box; c1. When the multi-link mechanism is subjected to a vertical upward force, the multi-link mechanism drives the blocking component to move obliquely upward in a direction close to the battery box.

5. The bracket assembly according to claim 2, characterized in that: The connecting assembly is a four-bar linkage, the blocking component is connected to the bracket via the four-bar linkage, and the four-bar linkage is used to drive the blocking component to prevent the battery box from being separated from the bracket; Preferably, the four-bar linkage drives the blocking component to apply a thrust to the battery box approaching the bracket.

6. The bracket assembly according to claim 1, characterized in that: The lock tongue includes a force-applying portion, a pivoting portion and a connecting portion which are sequentially connected to each other, the pivoting portion is pivotally connected to the bracket, the connecting portion can be inserted into and connected to the lock slot or retracted out of the lock slot, and the force-applying portion is used to apply a force to the lock tongue so that the lock tongue rotates relative to the pivoting portion.

7. The bracket assembly according to claim 6, characterized in that: The bracket assembly meets one or more of the following conditions: a2. The outer side surface of the connecting portion has a recessed portion, and the inner side surface of the locking groove has a raised portion corresponding to the recessed portion, and the recessed portion is buckled with the raised portion; Alternatively, the outer side surface of the connecting portion has a protrusion, the inner side surface of the locking groove has a recessed portion corresponding to the protrusion, and the recessed portion is buckled with the protrusion; b2. The bracket is provided with a limiting hole, and the locking tongue is rotatably arranged in the limiting hole; c2. The locking mechanism further comprises at least one locking beam, the locking beam being connected to the bracket, a limiting hole being provided in the locking beam, and the locking tongue being swingably connected in the limiting hole; d2. The locking mechanism further includes a first driving mechanism and a push rod, wherein the push rod is connected to the lock tongue, and the first driving mechanism is used to drive the push rod to move the push rod along the length direction so that the lock tongue moves away from or is inserted into the lock slot; Preferably, the locking tongue has a sliding groove, the push rod is provided with a plug, the plug penetrates into the sliding groove, and the plug acts on the sliding groove to make the locking tongue swing.

8. The bracket assembly according to claim 1, characterized in that: The bracket assembly meets one or more of the following conditions: a3, the locking device is movably connected to the side of the bracket; Preferably, the bracket assembly further comprises a connecting plate, and the locking mechanism is connected to the bracket via the connecting plate; b3. The bracket assembly further comprises a limit block, which is arranged on the moving path of the locking mechanism in the bracket, and is used to limit the moving limit position of the locking mechanism during locking or unlocking; c3. The bracket assembly further includes a driving mechanism, and the driving mechanism is used to drive the movement of the locking mechanism; Preferably, the bracket assembly further comprises a first sensor, the first sensor is used to detect the specific position of the battery box, and the output end of the first sensor is electrically connected to the driving mechanism; d3. The bracket assembly further includes a second sensor, and the second sensor is used to detect the locking state of the locking mechanism; e3. The bracket assembly further includes a driving member, one end of which is connected to the locking mechanism, and the other end of which is located between the bracket and the battery box; The battery box is installed from outside the bracket to inside the bracket, and the battery box will abut against the driving member and be used to drive the driving member and the locking mechanism to move, so that the locking mechanism can lock the battery box on the bracket.

9. An electric vehicle, characterized in that: Comprising a bracket assembly as described in any one of claims 1-8.

10. A method for locking a battery box, characterized in that: Using the locking device as claimed in claim 1, the locking method of the battery box comprises the following steps: Place the battery box in the first locking position on the bracket; Controlling the locking mechanism to move toward the direction close to the battery box on the bracket; Controlling the locking mechanism to push the battery box to move to a second locking position; The control locking mechanism is locked relative to the bracket.

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