A battery pack quick-change device for a vehicle and a vehicle

Abstract

The present invention discloses a battery pack quick-change device for a vehicle and a vehicle, and relates to the technical field of vehicles. The battery pack quick-change device for a vehicle includes a limit pin, one end of which is connected to the lower body of the vehicle; a shell, which is connected to the battery pack and has a cavity with a trapezoidal structure inside; a bolt located at the lower part of the cavity, extending into the cavity and threadedly connected to the shell; a support rod located in the cavity, the support rod is supported in the cavity by the bolt and can move up and down relative to the shell with the bolt; a limit ball located in the middle of the support rod; wherein the middle part of the limit pin has a recessed portion, the interior of the support rod is hollow and has a notch at a position corresponding to the recessed portion, the limit ball cooperates with the notch, and when the battery pack quick-change device is in a locked state, the limit pin is inserted into the interior of the support rod, and the limit ball is stuck in the recessed portion. The present invention also provides a vehicle, including the above-mentioned battery pack quick-change device. The present invention can improve the efficiency of installing and removing the battery pack.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a battery pack quick-change device for a vehicle and a vehicle. Background Art

[0002] With the development and progress of society, pure electric vehicles, as an environmentally friendly means of transportation, have the advantages of economical operation, clean and environmental protection, and their application scope has become increasingly wide. However, due to the limitation of low battery capacity, the driving mileage is short. At the same time, due to the long battery charging time, high battery cost and difficult maintenance, the promotion of pure electric vehicles is limited. In order to extend the driving range of pure electric vehicles, the battery replacement method can be adopted. When the battery power is low, a fully charged battery pack can be quickly replaced at the charging station. The battery replacement time is controlled within 3 minutes, which is similar to the refueling time of fuel vehicles, thereby extending the driving range and saving time. The battery replacement method can realize the "vehicle-battery separation" of electric vehicles. The battery, charging and maintenance are operated by professional operators, which reduces the user's vehicle purchase cost and promotes the industrialization and market application of pure electric vehicles.

[0003] However, at present, the battery quick-change system of pure electric vehicles mainly uses several methods such as nut screw and four-bar mechanism or gear mechanism to control the locking and unlocking of the battery pack to complete the battery replacement. It is time-consuming and labor-intensive, and the installation and disassembly methods are too complicated, resulting in low efficiency of production lines and after-sales maintenance, which seriously affects the industrialization of electric vehicles. Summary of the invention

[0004] An object of the first aspect of the present invention is to provide a battery pack quick-change device with simple and quick locking and unlocking processes.

[0005] Another object of the first aspect of the present invention is to provide a battery pack quick-change device with reliable locking.

[0006] An object of the second aspect of the present invention is to provide a vehicle, comprising the above-mentioned battery pack quick-change device, wherein the locking and unlocking processes of the battery pack quick-change device of the vehicle are simple and quick.

[0007] According to a first aspect of the present invention, the present invention provides a battery pack quick-change device for a vehicle, comprising:

[0008] A limit pin shaft, one end of which is connected to the lower body of the vehicle;

[0009] A shell connected to the battery pack and having a trapezoidal cavity inside;

[0010] A bolt located at the lower part of the cavity extends into the cavity and is threadedly connected to the shell;

[0011] a support rod located in the cavity, the support rod being supported in the cavity by the bolt and being able to move up and down relative to the housing together with the bolt; and

[0012] A limiting ball, located in the middle of the support rod;

[0013] Among them, the middle part of the limit pin shaft has a recessed portion recessed in the direction of its axis, the interior of the support rod is hollow and has a notch at a position corresponding to the recessed portion, the limit ball cooperates with the notch, and when the battery pack quick-change device is in a locked state, the limit pin shaft is inserted into the interior of the support rod, and the limit ball is stuck in the recessed portion.

[0014] Furthermore, the bolt has a head section and an insertion section, the insertion section extends into the cavity, the head section and the insertion section are both cylindrical, the diameter of the insertion section is smaller than the diameter of the head section, and the support rod is sleeved on the insertion section.

[0015] Furthermore, the outer surface of the head section is provided with an external thread, and the corresponding position of the shell is provided with an internal thread. The bolt is connected to the shell through a thread and the external thread cooperates with the internal thread so that the bolt moves up and down relative to the shell.

[0016] Furthermore, the limiting pin shaft has a connecting section and an inserting section, the connecting section is connected to the lower body of the vehicle through bolts, and the inserting section is inserted into the interior of the supporting rod.

[0017] Furthermore, a boss with a protruding surface is provided on one side of the connecting section close to the inserting section, and a groove matching the boss is provided at a corresponding position of the shell.

[0018] Furthermore, the boss is trumpet-shaped, and the axis of the boss coincides with the central axis of the connecting section.

[0019] Furthermore, the cross-sectional area of ​​the internal cavity of the shell gradually increases from top to bottom, and when the battery pack quick-change device is in a locked state, the limiting ball is located between the side wall of the cavity and the recessed portion.

[0020] Furthermore, when the battery pack quick-change device is in a locked state, the upper portion of the support rod fits into the upper portion of the cavity.

[0021] Furthermore, there are at least three limiting balls, which are spaced and evenly distributed on the notch in the middle of the support rod.

[0022] According to a second aspect of the present invention, the present invention provides a vehicle, comprising a vehicle body, and also comprising the above-mentioned battery pack quick-change device, wherein the vehicle body and the battery pack quick-change device are detachably connected.

[0023] The battery pack quick-change device for a vehicle and the vehicle of the present invention are provided with a limit pin shaft, one end of which is connected to the lower body of the vehicle; a shell connected to the battery pack and having an internal cavity in a trapezoidal structure; a bolt located at the lower part of the cavity, extending into the cavity and being threadedly connected to the shell; a support rod located in the cavity, the support rod is supported by the bolt in the cavity and can move up and down relative to the shell with the bolt; and a limit ball located in the middle of the support rod; wherein the middle part of the limit pin shaft has a recessed portion recessed in the direction of its axis, the interior of the support rod is hollow and has a notch at a position corresponding to the recessed portion, the limit ball cooperates with the notch, and when the battery pack quick-change device is in a locked state, the limit pin shaft is inserted into the interior of the support rod, and the limit ball is stuck in the recessed portion. In this way, the battery pack can be firmly connected to the vehicle body or removed from the vehicle body by simply moving the bolt up and down relative to the shell, thereby greatly improving the locking and unlocking efficiency.

[0024] Furthermore, a boss with a protruding surface is provided on one side of the connection section close to the insertion section, and a groove matching the boss is provided at a corresponding position of the shell. In this way, when the battery pack quick-change device is in a locked state, the cooperation between the boss and the groove ensures that the battery pack quick-change device is locked in the horizontal direction, and at the same time, the limiting ball is inserted into the recessed portion to ensure that the battery pack quick-change device is locked in the vertical direction. This strong locking state achieves a comprehensive locking effect, so the battery pack quick-change device of the present invention has good locking reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0026] Figure 1 is a three-dimensional schematic diagram of a limit pin according to an embodiment of the present invention;

[0027] Figure 2 is a schematic cross-sectional view of a housing according to an embodiment of the present invention;

[0028] Figure 3 is a three-dimensional schematic diagram of a bolt according to an embodiment of the present invention;

[0029] Figure 4is a three-dimensional schematic diagram of a battery pack quick-change device in a locked state according to an embodiment of the present invention;

[0030] Figure 5 yes Figure 4 A schematic cross-sectional view along line AA;

[0031] Figure 6 is a three-dimensional schematic diagram of a battery pack quick-change device in an unlocked state according to an embodiment of the present invention;

[0032] Figure 7 yes Figure 6 Schematic cross-sectional view along line BB. DETAILED DESCRIPTION

[0033] Figure 1 It is a three-dimensional schematic diagram of a limiting pin according to an embodiment of the present invention. Figure 2 is a schematic cross-sectional view of a housing according to an embodiment of the present invention. Figure 3 2 is a schematic three-dimensional diagram of a bolt according to an embodiment of the present invention. Figure 4 It is a three-dimensional schematic diagram of a battery pack quick-change device in a locked state according to an embodiment of the present invention. Figure 5 yes Figure 4 The cross-sectional view along the AA line in FIG. Figure 1-Figure 5 As shown, the battery pack quick-change device includes a limiting pin 1, a housing 2, a bolt 3, a support rod 4 and a limiting ball 5.

[0034] like Figure 1 As shown, one end of the limit pin 1 is connected to the lower body of the vehicle. Here, the limit pin 1 is connected to the lower body by a bolt.

[0035] like Figure 2 As shown, the shell is connected to the battery pack and has a trapezoidal cavity inside. Here, the shell 2 is located at the edge of the battery pack. Figure 2 As shown, the shell 2 and the battery pack are connected by bolts located on the left and right sides of the lower part of the shell 2.

[0036] like Figure 5 As shown, the bolt 3 is located at the lower part of the cavity in the housing 2 , one end of the bolt 3 extends into the cavity and is threadedly connected to the housing 2 .

[0037] like Figure 5 As shown, the support rod 4 is located in the cavity of the housing 2, and the support rod 4 is supported by the bolt 3 in the cavity and can move up and down relative to the housing 2 together with the bolt 3. The limiting ball 5 is located in the middle of the support rod 4.

[0038] Among them, Figure 1As shown, the middle portion of the limit pin shaft 1 has a recessed portion 11 recessed toward the axial direction thereof. Figure 5 As shown, the support rod 4 is hollow inside and is provided with a notch 41 at a position corresponding to the recessed portion 11, and the limiting ball 5 cooperates with the notch 41. When the battery pack quick-change device is in a locked state, as shown in FIG. Figure 5 As shown, the limiting pin 1 is inserted into the interior of the support rod 4 , and the limiting ball 5 is inserted into the recessed portion 11 .

[0039] The battery pack quick-change device for a vehicle of the present invention is provided with a limit pin 1, one end of which is connected to the lower body of the vehicle; a shell 2, which is connected to the battery pack and has an internal cavity of a trapezoidal structure; a bolt 3 located at the lower part of the cavity, extending into the cavity and threadedly connected to the shell 2; a support rod 4 located in the cavity, the support rod 4 is supported in the cavity by the bolt 3 and can move up and down relative to the shell together with the bolt 3; and a limit ball 5, located in the middle of the support rod 4; wherein the middle part of the limit pin 1 has a recessed portion 11 recessed in the axial direction thereof, the interior of the support rod 4 is hollow and has a notch 41 at a position corresponding to the recessed portion, the limit ball 5 cooperates with the notch 41, and when the battery pack quick-change device is in a locked state, the limit pin 1 is inserted into the interior of the support rod 4, and the limit ball 5 is snapped into the recessed portion 11. In this way, the battery pack can be firmly connected to or removed from the vehicle body by simply moving the bolt 3 up and down relative to the housing, thereby greatly improving the locking and unlocking efficiency.

[0040] Specifically, Figure 3 As shown, the bolt 3 has a head section 31 and an insertion section 32, the insertion section 32 is inserted into the cavity, the head section 31 and the insertion section 32 are both cylindrical, the diameter of the insertion section 32 is smaller than the diameter of the head section 31, and the support rod 4 is sleeved on the insertion section 32. At the same time, the outer surface of the head section 31 is provided with an external thread 33, and the corresponding position of the housing 2 is provided with an internal thread (not shown in the figure), the bolt 3 is connected to the housing 2 through a thread, and through the cooperation of the external thread 33 and the internal thread, the bolt 3 moves up and down relative to the housing 2.

[0041] Specifically, when the battery pack needs to be installed on the vehicle, the limit pin 1 is separated from the housing 2, and the lifting mechanism transports the battery pack to the lower part of the vehicle body near the limit pin 1. At this time, the limit pin 1 is inserted into the housing 2, but the recessed portion 11 on the limit pin 1 is not on the same horizontal plane as the limit ball 5, that is, the limit ball 5 is not inserted into the recessed portion 11, and the limit ball 5 is located in the notch 41 on the support rod 4. Therefore, if the battery pack needs to be installed on the vehicle, the bolt 3 is required to drive the support rod 4 and the limit ball 5 to move upward relative to the housing until the limit ball 5 is inserted into the recessed portion 11. In this way, the battery pack quick-change device is in a locked state by the limit ball 5 being inserted into the recessed portion 11, that is, the battery pack has been installed on the vehicle.

[0042] Furthermore, if Figure 1 As shown, the stop pin 1 comprises a connecting section 12 and an inserting section 13 . The connecting section 12 is connected to the lower body of the vehicle by bolts, and the inserting section 13 is inserted into the interior of the support rod 4 .

[0043] At the same time, the connecting section 12 is provided with a boss 14 with a protruding surface on one side close to the inserting section 13, such as Figure 2 As shown, a groove 21 matching the boss 14 is provided at a corresponding position of the housing 2 .

[0044] A boss 14 with a protruding surface is provided on one side of the connection section 12 close to the insertion section 13, and a groove 21 matching the boss 14 is provided at a corresponding position of the housing 2. In this way, when the battery pack quick-change device is in a locked state, the cooperation between the boss 14 and the groove ensures that the battery pack quick-change device is locked in the horizontal direction, and at the same time, the limiting ball 5 is inserted into the recessed portion 11 to ensure that the battery pack quick-change device is locked in the vertical direction. This strong locking state achieves a comprehensive locking effect, so the battery pack quick-change device of the present invention has good locking reliability.

[0045] Furthermore, the boss 14 may be trumpet-shaped, and the axis of the boss 14 coincides with the central axis of the connecting section 12. In this way, when the battery pack quick-change device is in a locked state, the boss 14 and the groove 21 can better cooperate to enhance the locking stability of the battery pack quick-change device.

[0046] At the same time, if Figure 2 As shown, the cross-sectional area of ​​the cavity inside the housing 2 gradually increases from top to bottom. Figure 5 As shown, when the battery pack quick-change device is in a locked state, the limiting ball 5 is located between the side wall of the cavity and the recessed portion 11. The connecting section 12 is at a certain distance from the housing 2.

[0047] At the same time, if Figure 5 As shown, when the battery pack quick-change device is in a locked state, the upper portion of the support rod 4 fits with the upper portion of the cavity. In this way, the locking stability of the battery pack quick-change device can be further enhanced in the vertical direction.

[0048] also, Figure 6 is a three-dimensional schematic diagram of a battery pack quick-change device in an unlocked state according to an embodiment of the present invention, Figure 7 yes Figure 6 The cross-sectional view along line BB in FIG. Figure 5 and Figure 7 As shown, there are two limit balls 5, but due to Figure 5 and Figure 7 Only a cross-sectional view is shown, so only two limiting balls are shown. In fact, in the present invention, there are at least three limiting balls 5, such as 3, 4 or 5, which are spaced and evenly distributed on the notch 41 in the middle of the support rod 4. When the battery pack quick-change device is in a locked state, all the limiting balls 5 are stuck in the recessed portion 11, so that the locking stability of the battery pack quick-change device can be further enhanced.

[0049] Here, it should be noted that the present invention controls the bolt 3 to move up and down relative to the shell 2 by means of a bolt control module installed on the battery pack. Specifically, the battery pack has multiple shells 2 (that is, multiple battery pack quick-change devices), each of which is distributed on the edge of the battery pack. There is a small motor near each shell to control the rotation of the bolt 3 so that it moves up and down relative to the shell 2. At the same time, the bolt control module controls the bolt 3 to move up and down relative to the shell 2 through the weighing limit. Specifically, during the lifting process of the lifting mechanism, a certain gravity is given to the bolt 3, and a locking signal and an unlocking signal are given to the bolt control module through the weighing limit. The bolt 3 is controlled to move up and down through the locking signal and the unlocking signal to achieve the purpose of locking and unlocking. More specifically: when the battery pack needs to be installed on the vehicle, the lifting mechanism lifts the battery pack to the vicinity of the lower body, the boss 14 on the limit pin shaft 1 fits in with the groove on the shell 2, and the insertion section 13 is inserted into the internal cavity of the shell 2. When the lifting mechanism detects that the gravity given to itself by the battery pack is the gravity of the battery pack, it transmits a locking signal to the bolt control module. At this time, the bolt control module controls the motor to make the bolt 3 move upward relative to the shell. At this time, the support rod 4 also moves upward driven by the bolt 3 until the limit ball 5 is stuck in the recessed part 11 of the limit pin shaft 1, and the battery pack installation process is completed; when the battery pack needs to be disassembled When coming down, the lifting mechanism slightly pushes the battery pack upward. At this time, the lifting mechanism detects that the gravity given to itself by the battery pack is the weight of the battery pack, and transmits an unlocking signal to the bolt control module. At this time, the bolt control module controls the motor to make the bolt 3 move downward relative to the shell to form an unlocked state. Here, when the lifting mechanism slightly pushes the battery pack upward, the limiting ball 5 is also released from the force state, so that the bolt 3 can move downward under the drive of the motor, and the support rod 4 also releases the upward force of the bolt 3 and moves downward until the limiting ball 5 moves out of the recessed portion 11. At this time, the battery pack falls off onto the lifting mechanism, and the battery pack disassembly process is completed.

[0050] Here, it should be noted that the bolt control module will uniformly output the locking signal and unlocking signal only after receiving the locking signal or unlocking signal corresponding to each battery pack quick-change device. All battery pack quick-change devices receive the locking signal and unlocking signal at the same time and execute the locking and unlocking actions at the same time.

[0051] In particular, in one embodiment of the present invention, a vehicle is provided, comprising a vehicle body and the battery pack quick-change device described above, wherein the vehicle body is detachably connected to the battery pack quick-change device. The battery pack quick-change device in this embodiment is exactly the same as the battery pack quick-change device described above, so the battery pack quick-change device is not described in detail in this embodiment.

[0052] Since the vehicle includes a battery pack quick-change device, a limit pin 1 is provided, one end of which is connected to the lower body of the vehicle; a shell 2 is connected to the battery pack and the internal cavity is a trapezoidal structure; a bolt 3 located at the lower part of the cavity extends into the cavity and is threadedly connected to the shell 2; a support rod 4 located in the cavity, the support rod 4 is supported in the cavity by the bolt 3 and can move up and down relative to the shell together with the bolt 3; and a limit ball 5 is located in the middle of the support rod 4; wherein the middle part of the limit pin 1 has a recessed portion 11 recessed in the axial direction thereof, the interior of the support rod 4 is hollow and a notch 41 is provided at a position corresponding to the recessed portion, the limit ball 5 cooperates with the notch 41, and when the battery pack quick-change device is in a locked state, the limit pin 1 is inserted into the interior of the support rod 4, and the limit ball 5 is snapped into the recessed portion 11. In this way, the battery pack can be firmly connected to or removed from the vehicle body by simply moving the bolt 3 up and down relative to the housing, thereby greatly improving the locking and unlocking efficiency.

[0053] At this point, those skilled in the art should recognize that, although the exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and identified as covering all these other variations or modifications.

Claims

1. A battery pack quick-change device for a vehicle, characterized in that: include: A limit pin shaft, one end of which is connected to the lower body of the vehicle; A shell connected to the battery pack and having a trapezoidal cavity inside; A bolt located at the lower part of the cavity extends into the cavity and is threadedly connected to the shell; a support rod located in the cavity, the support rod being supported in the cavity by the bolt and being able to move up and down relative to the housing together with the bolt; and A limiting ball, located in the middle of the support rod; The middle part of the limit pin shaft has a recessed part that is recessed in the direction of its axis, the interior of the support rod is hollow and is provided with a notch at a position corresponding to the recessed part, the limit ball is matched with the notch, and when the battery pack quick-change device is in a locked state, the limit pin shaft is inserted into the interior of the support rod, and the limit ball is stuck in the recessed part; The cross-sectional area of ​​the cavity inside the shell gradually increases from top to bottom, and when the battery pack quick-change device is in a locked state, the limiting ball is located between the side wall of the cavity and the recessed portion; When the battery pack quick-change device is in a locked state, the upper portion of the support rod fits into the upper portion of the cavity.

2. The battery pack quick-change device according to claim 1, characterized in that: The bolt has a head section and an insertion section, the insertion section extends into the cavity, the head section and the insertion section are both cylindrical, the diameter of the insertion section is smaller than the diameter of the head section, and the support rod is sleeved on the insertion section.

3. The battery pack quick-change device according to claim 2, characterized in that: The outer surface of the head section is provided with an external thread, and the corresponding position of the shell is provided with an internal thread. The bolt is connected to the shell through a thread and the external thread cooperates with the internal thread so that the bolt moves up and down relative to the shell.

4. The battery pack quick-change device according to claim 1, characterized in that: The limiting pin shaft comprises a connecting section and an inserting section, wherein the connecting section is connected to the lower body of the vehicle through bolts, and the inserting section is inserted into the interior of the supporting rod.

5. The battery pack quick-change device according to claim 4, characterized in that: A boss with a protruding surface is provided on one side of the connection section close to the insertion section, and a groove matching the boss is provided at a corresponding position of the shell.

6. The battery pack quick-change device according to claim 5, characterized in that: The boss is trumpet-shaped, and the axis of the boss coincides with the central axis of the connecting section.

7. The battery pack quick-change device according to claim 1, characterized in that: There are at least three limiting balls, which are spaced and evenly distributed on the notch in the middle of the support rod.

8. A vehicle, comprising a vehicle body, characterized in that: It also includes a battery pack quick-change device as described in any one of claims 1 to 7, and the vehicle body is detachably connected to the battery pack quick-change device.

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