Battery ejection mechanism, battery box and electric vehicle

Abstract

The utility model discloses a battery pop-up mechanism, a battery box and an electric vehicle, and relates to the technical field of electric vehicles. The battery ejection mechanism comprises an accessory end cover, a guide groove, a rotary ejection assembly and an elastic piece. One side, in the first direction, of the accessory end cover is used for abutting against a battery, and the other side of the accessory end cover is provided with a containing cavity; and the guide groove is concavely formed in one side, facing the battery, of the accessory end cover, and is communicated with the accommodating cavity. The rotary jacking assembly comprises a rotating shaft located in the containing cavity and a jacking rod arranged on the rotating shaft in a sleeving mode, and the jacking rod is provided with a jacking part capable of stretching out of and retracting into the guide groove and a clamping part located in the containing cavity; the elastic piece is located in the containing cavity and connected with the clamping part and the accessory end cover. By adopting the technology provided by the utility model, the battery can be jacked by utilizing a lateral space through a simple structure.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicles, and in particular to a battery ejection mechanism, a battery box and an electric vehicle. Background Art

[0002] With the progress of urbanization and the improvement of public transportation systems, power-assisted bicycles (especially electric-assisted bicycles) are becoming increasingly popular in daily life as a supplementary means of transportation, and the performance requirements of power-assisted bicycles are becoming higher and higher. Among them, the battery box of most power-assisted bicycles is fixed to the frame, and the battery is fully embedded in the battery box. To remove the battery, you must first remove the fixing screws and then lift the buckle or handle on the battery to remove it. However, the battery is generally heavy and has a high resistance at the connection with the battery box, which can cause the battery to slip out during removal.

[0003] Based on this, Chinese utility model patent document (CN210337552U) discloses an automatic ejection device for unlocking an electric vehicle battery compartment. This device incorporates an inclined slot in the bottom of the battery compartment, housing an ejection device that ejects the battery. However, the ejection device, which includes a telescopic rod, a stopper, a spring, a fixed stopper, and an adjustment bolt, is complex and embedded, making subsequent repairs difficult. Utility Model Content

[0004] The utility model provides a battery ejection mechanism, a battery box and an electric vehicle, so as to solve the problem that the battery ejection device of the electric vehicle in the prior art is relatively complicated in structure.

[0005] In order to solve the above technical problems, in a first aspect, the technical solution adopted by the present invention is to provide a battery ejection structure, wherein the battery ejection mechanism includes: an accessory end cover, a guide groove, a screw-top assembly and an elastic member.

[0006] One side of the accessory end cap along the first direction is configured to abut against the battery, and the other side is provided with a receiving chamber. The guide groove is recessed on the side of the accessory end cap facing the battery and communicates with the receiving chamber. The screw-top assembly includes a rotating shaft positioned within the receiving chamber and a push rod sleeved on the rotating shaft. The push rod includes a lifting portion that can extend and retract within the guide groove and a clamping portion positioned within the receiving chamber. The elastic member is positioned within the receiving chamber and is connected to the clamping portion and the accessory end cap, respectively.

[0007] The technical solution provided by this utility model has the following beneficial effects compared with the prior art:

[0008] By providing a receiving space for installing an elastic member and a screw-top assembly on the accessory end cover, and the elastic member being connected to the clamping portion of the ejector rod and the accessory end cover respectively, the elastic member can apply the necessary elastic force to the screw-top assembly, that is, the ejector rod can rotate clockwise or counterclockwise around the rotation axis under the action of the elastic force, so that the lifting portion can protrude from the guide groove and pop out the battery.

[0009] Specifically, when removing a battery, such as for replacement or repair, the elastic member applies tension to the latching portion of the ejector pin, creating a reverse lifting force on the other end of the pin (the lifting portion), ejecting the battery from the end. When placing the battery, manually applied pressure causes the ejector pin to rotate about its axis and retract into the guide slot, while the elastic member deforms and stores elastic potential energy.

[0010] Compared to the current method of using a telescopic rod at the bottom of the battery box to lift it, this method requires minimal changes to the existing battery box structure. Furthermore, the accessory end cap, guide slot, screw-on assembly, and elastic member are simpler and less expensive, making them less susceptible to damage during use. Even if a malfunction occurs, repair and parts replacement are relatively simple thanks to the side access.

[0011] In some embodiments, the accessory end cover is provided with a snap-on portion, one end of the elastic member is sleeved on the snap-on portion, and the other end is sleeved on the clamping portion; wherein, when the lifting portion is extended out of the guide groove, the elastic member is in a free state, and when the lifting portion is retracted into the guide groove, the elastic member is in a stretched state.

[0012] In some embodiments, the battery further includes a battery end cover, and the battery end cover is protruded with a guide rib matching the guide groove.

[0013] With this technical solution, the guide rib protrudes from the battery end cap and mates with the guide slot. This allows the ejector rod of the screw-on assembly to abut against the guide rib when ejecting the battery, applying a lifting force to the battery, thereby facilitating insertion and removal. The rib's convex-concave fit with the guide slot ensures proper placement of the battery and reduces vibration within the battery compartment.

[0014] In some embodiments, the accommodating space is further provided with a limiter, which abuts against both sides of the push rod along the second direction, wherein the rotating member sequentially passes through the limiter and the push rod along the second direction. By adopting the above technical solution, the limiter is added to prevent the push rod from moving in the second direction, so that the lifting force of the push rod is always in the vertical direction.

[0015] In some embodiments, the accessory end cap further includes a retaining spring, which is located at both ends of the rotating shaft. With the above technical solution, the rotating shaft is limited by the retaining spring, making the transmission and adjustment of force more precise and controllable.

[0016] In some embodiments, the snap-fit ​​portion includes a first hole and a second hole, one end of the elastic member passes through the first hole and the second hole respectively, and the other end is sleeved on the snap-fit ​​portion.

[0017] By adopting the above technical solution, the elastic member can be a spring, and a first set of holes and a second set of holes are added to increase the number of springs driving the same push rod, thereby improving the elastic potential energy of the elastic member and reducing the possibility of spring failure.

[0018] In some embodiments, the guide groove, the screw-top assembly, and the elastic member are spaced apart on both sides of the accessory end cover along the second direction.

[0019] In a second aspect, the present application also provides a battery box, comprising a connecting plate, wherein the connecting plate is provided with the above-mentioned battery pop-up mechanism and the second accessory end cover on both sides along the first direction; the battery pop-up mechanism, the second accessory end cover and the connecting plate form a battery cavity for accommodating the battery.

[0020] By adopting the above technical solution, the battery box formed by the above pop-up mechanism, the second accessory end cover and the connecting piece can effectively facilitate the automatic pop-up of the battery in the battery cavity, thereby reducing the difficulty of the user in removing the battery and the risk of it falling out of the hand.

[0021] In some embodiments, the battery box also includes a lock, which is located at the accessory end cover of the battery pop-up mechanism and has a lock tongue that can be retracted from the accessory end cover, wherein the battery is recessed with a lock hole that can cooperate with the lock tongue.

[0022] With this technical solution, when a battery is placed in the battery compartment, the ejector rod of the battery ejection mechanism rotates, causing the ejector portion to engage the guide groove. This ejector portion then abuts the battery's guide ribs. Once the lock tongue is inserted into the battery lock hole, the deformed elastic member stores elastic potential energy. To remove the battery, turning the key pulls the lock tongue out of the battery lock hole, releasing the elastic potential energy of the elastic member. This in turn drives the ejector rod to rotate, causing the ejector portion to apply an extension force toward the guide ribs, ejecting the battery.

[0023] In a third aspect, the present application also provides an electric vehicle comprising the above-mentioned battery box. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0025] Figure 1 This is a three-dimensional structural diagram of an embodiment of a battery ejection mechanism provided by the utility model. Figure 1 ;

[0026] Figure 2 This is a three-dimensional structural diagram of an embodiment of a battery ejection mechanism provided by the utility model. Figure 2 ;

[0027] Figure 3 This is a partial exploded schematic diagram of an embodiment of a battery ejection mechanism provided by the present invention;

[0028] Figure 4 This is a schematic diagram of the three-dimensional structure of a battery of an embodiment of a battery ejection mechanism provided by the present invention;

[0029] Figure 5 This is a partial structural diagram of an embodiment of a battery ejection mechanism provided by the present utility model;

[0030] Figure 6 This is a partial structural diagram of an embodiment of a battery ejection mechanism provided by the present utility model;

[0031] Figure 7 This is a schematic diagram of battery ejection according to an embodiment of a battery ejection mechanism provided by the present invention;

[0032] Figure 8 This is a schematic diagram of battery placement in an embodiment of a battery ejection mechanism provided by the present invention.

[0033] In the picture:

[0034] 10. Accessory end cover; 11. Accommodating chamber; 110. Limiting member; 12. Buckle portion; 13. Circlip;

[0035] 20. Guide groove; 30. Rotary top assembly; 31. Rotating shaft; 32. Ejector rod; 320. Elevating portion; 321. Clamping portion; 3210. First set of holes; 3211. Second set of holes;

[0036] 40. Elastic member; 50. Battery; 51. Battery end cover; 510. Guide rib; 511. Lock hole; 60. Connecting piece; 61. Second accessory end cover; 62. Lock; 620. Lock tongue. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0038] In order to facilitate the subsequent description, before describing the specific structure of the battery ejection mechanism, battery box and electric vehicle, this application first combines Figure 1 A first direction (Y), a second direction (X), and a third direction (Z) are defined. The first direction is the width of the battery ejection mechanism when it is normally positioned, such as the Y direction; the second direction is the length of the battery ejection mechanism when it is normally positioned, such as the X direction; and the third direction is the height of the battery ejection mechanism when it is normally positioned, such as the Z direction. In this application, the first direction (X), the second direction (Z), and the third direction (Y) are perpendicular to each other.

[0039] It can be understood that the mutual perpendicularity in this application is not absolute perpendicularity, and the approximate perpendicularity caused by processing errors and assembly errors (for example, the angle between two structural features is 89.9°) is also within the range of mutual perpendicularity in this application.

[0040] See also Figures 1 to 2 As shown, Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of a battery ejection mechanism provided by the present application is shown. Figure 1 ; Figure 2 A schematic diagram of the three-dimensional structure of an embodiment of a battery ejection mechanism provided by the present application is shown. Figure 2 .

[0041] In some embodiments, the battery ejection mechanism includes: an accessory end cap 10, a guide slot 20, a screw-top assembly 30, and an elastic member 40. One side of the accessory end cap 10 along the first direction is used to abut against the battery 50, and the other side is provided with a receiving chamber 11; the guide slot 20 is recessed on the side of the accessory end cap 10 facing the battery 50 and is connected to the receiving chamber 11. The screw-top assembly 30 includes a rotating shaft 31 located in the receiving chamber 11 and a push rod 32 sleeved on the rotating shaft 31, wherein the push rod 32 has a lifting portion 320 that can extend out and retract into the guide slot 20 and a clamping portion 321 located in the receiving chamber 11; the elastic member 40 is located in the receiving chamber 11 and is respectively connected to the clamping portion 321 and the accessory end cap 10.

[0042] In the embodiment of the present application, a accommodating space for installing the elastic member 40 and the screw-top assembly 30 is provided on the accessory end cover 10, and the elastic member 40 is respectively connected to the clamping portion 321 of the top rod 32 and the accessory end cover 10, so that the elastic member 40 can apply the necessary elastic force to the screw-top assembly 30, that is, the top rod 32 can rotate clockwise or counterclockwise around the rotating axis 31 under the action of the elastic force, so that the lifting portion 320 can protrude from the guide groove 20 and pop out the battery 50.

[0043] For example, when the battery 50 needs to be removed, such as when replacing or repairing it, the elastic member 40 applies tension to the engaging portion 321 of the ejector pin 32, causing the other end of the ejector pin 32 (i.e., the lifting portion 320) to receive a reverse lifting force, thereby ejecting the battery 50 from the end of the battery 50. When the battery 50 is placed, the manually applied pressure causes the ejector pin 32 to rotate about the rotation axis 31 and retract into the guide slot 20, while the elastic member 40 deforms and stores elastic potential energy.

[0044] The structure of the accessory end cap 10, guide groove 20, screw top assembly 30 and elastic member 40 is relatively simple, low in cost and not easily damaged during use. Even if a fault occurs, maintenance and parts replacement at the side are also relatively simple.

[0045] In some embodiments, the accessory end cap 10 is provided with a protruding snap portion 12, and one end of the elastic member 40 is sleeved on the snap portion 12, and the other end is sleeved on the engaging portion 321. When the lifting portion 320 is extended out of the guide slot 20, the elastic member 40 is in a free state, and when the lifting portion 320 is retracted into the guide slot 20, the elastic member 40 is in a stretched state. For example, the elastic member 40 may be a spring.

[0046] Combine Figure 3 As shown, Figure 3 A partial exploded schematic diagram of an embodiment of a battery ejection mechanism provided by the present application is shown.

[0047] In some embodiments, the accessory end cap 10 further includes a retaining spring 13, which is located at both ends of the rotating shaft 31. In the embodiment of the present application, the retaining spring 13 defines the rotating shaft 31, making the transmission and adjustment of force more precise and controllable. For example, Figure 3 The retaining spring 13 used is an E-type retaining spring 13, which is easy to install and can effectively improve the assembly speed of the rotating shaft 31. The present application does not limit the specific structure of the retaining spring 13. For example, a C-type retaining spring 13 or a U-type retaining spring 13 can also be used.

[0048] See also Figure 4 As shown, Figure 4 A schematic three-dimensional structure diagram of a battery 50 of an embodiment of a battery ejection mechanism provided by the present application is shown.

[0049] In some embodiments, the battery 50 further includes a battery end cover 51 , and the battery end cover 51 is provided with a guide rib 510 that matches the guide groove 20 .

[0050] In the embodiment of the present application, the guide rib 510 is protruded from the battery end cover 51 and matches the guide groove 20, so that when the ejector rod 32 of the screw-top assembly 30 pops out the battery 50, it can abut against the guide rib 510 and facilitate the application of a lifting force to the battery 50, thereby facilitating the insertion and removal of the battery 50. The guide rib 510 and the guide groove 20 are matched in a concave and convex manner to ensure the correct placement of the battery 50 and reduce the vibration of the battery 50 in the battery box. For example, the guide rib 510 is provided with a groove below along the third direction, which can match the lifting portion 320 of the ejector rod 32 in a concave and convex manner.

[0051] See also Figure 5 As shown, Figure 5 A partial structural schematic diagram of an embodiment of a battery ejection mechanism provided by the present application is shown.

[0052] In some embodiments, the accommodating space is further provided with a stopper 110, which abuts against both sides of the push rod 32 along the second direction. The rotating member sequentially passes through the stopper 110 and the push rod 32 along the second direction. In this embodiment of the present application, the stopper 110 is provided to prevent displacement of the push rod 32 in the second direction, ensuring that the lifting force of the push rod 32 is always vertical. Exemplarily, the stopper 110 is protruding from the accessory end cap 10, and the distance between two symmetrically arranged stoppers 110 is the width of the push rod 32.

[0053] In some embodiments, combined Figure 5 As shown, the clamping portion 321 includes a first hole 3210 and a second hole 3211 . One end of the elastic member 40 passes through the first hole 3210 and the second hole 3211 respectively, and the other end is sleeved on the buckle portion 12 .

[0054] In the embodiment of the present application, the elastic member 40 may be a spring, and a first set of holes 3210 and a second set of holes 3211 are added to increase the number of springs driving the same push rod 32, thereby increasing the elastic potential energy of the elastic member 40 and reducing the possibility of spring failure. Figure 3 As shown, the clamping portion 321 may also be provided with only one sleeve hole, one end of the elastic member 40 is sleeved in the sleeve hole, and the other end is sleeved in the buckle portion 12 of the accessory end cover 10 .

[0055] In some embodiments, the guide groove 20, the screw-top assembly 30, and the elastic member 40 are spaced apart along the second direction on both sides of the accessory end cap 10. For example, the guide groove 20, the screw-top assembly 30, and the elastic member 40 can also be disposed in the middle of the accessory end cap 10 to smoothly eject the battery 50.

[0056] join Figure 6 As shown, Figure 6 A partial structural schematic diagram of an embodiment of a battery ejection mechanism provided by the present application is shown.

[0057] In some embodiments, the battery box includes a connecting piece 60, and the above-mentioned battery pop-up mechanism and the second accessory end cover 61 are respectively provided on both sides of the connecting piece 60 along the first direction; the battery pop-up mechanism, the second accessory end cover 61 and the connecting piece 60 enclose a battery 50 cavity for accommodating the battery 50.

[0058] In the embodiment of the present application, the battery box formed by the above-mentioned pop-up mechanism, the second accessory end cover 61 and the connecting piece 60 can effectively facilitate the automatic pop-up of the battery 50 in the battery cavity 50, thereby reducing the difficulty of the user in removing the battery 50 and the risk of it falling out of the hand.

[0059] Combine Figures 7 and 8 As shown, Figure 7 A schematic diagram of ejecting a battery 50 according to an embodiment of a battery ejection mechanism provided by the present application is shown; Figure 8 A schematic diagram showing the placement of a battery 50 according to an embodiment of a battery ejection mechanism provided by the present application is shown.

[0060] In some embodiments, the battery box also includes a lock 62, which is located at the accessory end cover 10 of the battery pop-up mechanism and has a lock tongue 620 that can be retracted from the accessory end cover 10, wherein the battery 50 is recessed with a lock hole 511 that can cooperate with the lock tongue 620.

[0061] In the embodiment of the present application, when it is necessary to remove the battery 50, turn the key (combined with Figure 7 As shown in FIG, the lock tongue 620 can be pulled out of the lock hole 511 of the battery 50, thereby releasing the elastic potential energy of the elastic member 40 and driving the ejector rod 32 to rotate so that the lifting portion 320 applies an extending force toward the guide rib 510, thereby ejecting the battery 50.

[0062] When the battery 50 is placed in the battery box, Figure 8 As shown, the top rod 32 of the battery pop-up mechanism rotates so that the lifting part 320 is embedded in the guide groove 20, wherein the lifting part 320 abuts against the guide rib 510 of the battery 50. When the lock tongue 620 is inserted into the lock hole 511 of the battery 50, the currently deformed elastic part 40 can store elastic potential energy.

[0063] In some embodiments, the present application also provides an electric vehicle comprising the above-mentioned battery box.

[0064] The above description is only an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, should be included in the protection scope of the present invention.

Claims

1. A battery ejection mechanism, characterized in that: include: An accessory end cover, wherein one side of the accessory end cover along the first direction is used to abut against the battery, and the other side of the accessory end cover is provided with an accommodating chamber; a guide groove, the guide groove being recessed on a side of the accessory end cover facing the battery and communicating with the accommodating chamber; A rotary top assembly, comprising a rotating shaft located in the accommodating chamber and a push rod sleeved on the rotating shaft, wherein the push rod has a lifting portion capable of extending out and retracting into the guide groove and a clamping portion located in the accommodating chamber; An elastic member is located in the accommodating chamber and is respectively connected to the clamping portion and the accessory end cover.

2. The battery ejection mechanism according to claim 1, wherein: The accessory end cover is provided with a buckle portion, one end of the elastic member is sleeved on the buckle portion, and the other end is sleeved on the clamping portion; wherein, when the lifting portion is extended out of the guide groove, the elastic member is in a free state, and when the lifting portion is retracted into the guide groove, the elastic member is in a stretched state.

3. The battery ejection mechanism according to claim 1, wherein: The battery further comprises a battery end cover, and the battery end cover is convexly provided with a guide rib matching the guide groove.

4. The battery ejection mechanism according to claim 1, wherein: The accommodating space is further provided with a limiting member, which abuts against two sides of the push rod along the second direction, wherein the rotating member sequentially passes through the limiting member and the push rod along the second direction.

5. The battery ejection mechanism according to claim 1, wherein: The accessory end cover further includes a retaining spring, and the retaining springs are respectively located at both end sides of the rotating shaft.

6. The battery ejection mechanism according to claim 2, wherein: The clamping portion includes a first hole and a second hole. One end of the elastic member passes through the first hole and the second hole respectively, and the other end is sleeved on the clamping portion.

7. The battery ejection mechanism according to any one of claims 1 to 6, characterized in that: The guide groove, the screw top assembly and the elastic member are spaced apart on both sides of the accessory end cover along the second direction.

8. A battery box, characterized in that: include: A connecting piece, wherein the battery ejection mechanism according to any one of claims 1 to 7 and the second accessory end cover are respectively provided on both sides of the connecting piece along the first direction; The battery ejection mechanism, the second accessory end cover and the connecting piece form a battery cavity for accommodating a battery.

9. The battery box according to claim 8, characterized in that: The battery box also includes a lock, which is located on the accessory end cover of the battery ejection mechanism and has a lock tongue that can be retracted from the accessory end cover, wherein the battery is recessed with a lock hole that can cooperate with the lock tongue.

10. An electric vehicle, characterized in that: A battery box comprising the battery box according to any one of claims 8 to 9.

Images