CN220076188U - Locking device for battery pack of electric automobile - Google Patents

Abstract

The utility model discloses a battery pack locking device of an electric automobile, which comprises a fixed frame for fixing a battery pack, wherein the fixed frame is detachably connected to a chassis of a new energy automobile, and a plurality of locking mechanisms are arranged between the fixed frame and the chassis; the locking mechanism comprises a connecting hole formed in the fixed frame, a locking nail is fixedly connected in the connecting hole, a locking hole which is arranged corresponding to the locking nail is formed in the chassis, and the locking nail can be detached in the locking hole; a locking component is arranged in the locking nail and is clamped with the locking hole; the locking component is in transmission connection with a control component in the locking nail, and the control component extends out from the bottom end of the locking nail; one end of the connecting hole, which is far away from the chassis, is provided with a sealing component. The utility model has the advantages of convenient use, no connection through the bolts, avoiding the problem of damaged threads caused by repeated tightness of the bolts, reducing the problem of installation of the battery pack caused by thread failure, along with higher safety and higher efficiency of replacing the battery pack.

Description

Locking device for battery pack of electric automobile

Technical Field

The utility model belongs to the technical field of automobile battery packs, and particularly relates to an electric automobile battery pack locking device.

Background

With the increasing number of new energy automobiles, the problems of slow charging time and low charging efficiency are gradually revealed, and on the premise, new energy automobiles with a power conversion function are generated. The battery pack is a power supply part of the new energy automobile with the power changing function, the power changing process is to detach the battery pack with insufficient electric quantity from the new energy automobile and change the new battery pack with full power, and the process is fully automatic and the efficiency is far higher than the charging efficiency.

The existing battery pack is generally fixed on a chassis of a new energy automobile through bolts, when the power is replaced, an automatic tool is used for loosening the bolts, so that the battery pack is separated from the chassis, then the new battery pack is transported to the lower part of the new energy automobile, and the circuit is switched on again through the bolt fixation, so that the power replacement can be completed; the whole process is automatically processed, the efficiency is high, and the problem of slow charging of the new energy vehicle can be effectively solved.

However, during long-term running of the vehicle, the bottom of the locking device is easily blocked by dust, sediment and the like, so that the bolt cannot be loosened again after being screwed up, and therefore the power battery pack cannot be detached and replaced, and the service performance of the power battery pack is seriously affected; meanwhile, the bolts are easy to wear after being loosened for many times, so that the battery pack is not fixed firmly, and safety accidents are easy to occur.

Therefore, it is needed to design a locking device for an electric automobile battery pack to replace the existing bolts to solve the above technical problems.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a locking device for a battery pack of an electric automobile.

In order to achieve the above purpose, the utility model provides a battery pack locking device of an electric automobile, which comprises a fixed frame for fixing a battery pack, wherein the fixed frame is detachably connected to a chassis of a new energy automobile, and a plurality of locking mechanisms are arranged between the fixed frame and the chassis;

the locking mechanism comprises a connecting hole formed in the fixed frame, a locking nail is fixedly connected in the connecting hole, a locking hole which is arranged corresponding to the locking nail is formed in the chassis, and the locking nail can be detached in the locking hole;

a locking assembly is arranged in the locking nail and is clamped with the locking hole; the locking component is in transmission connection with a control component in the locking nail, and the control component extends out from the bottom end of the locking nail;

and a sealing component is arranged at one end of the connecting hole, which is far away from the chassis.

Preferably, the locking assembly comprises a communication groove formed in the side wall of the locking nail, a locking block is slidably connected in the communication groove, a plurality of clamping grooves which are arranged corresponding to the locking block are formed in the side wall of the locking hole, and the locking block extends out of the communication groove and is detachably connected with the clamping groove; one end of the locking block, which is far away from the clamping groove, is in transmission connection with the control assembly.

Preferably, the control assembly comprises a containing cavity which is arranged in the locking nail and is communicated with the communication groove, a control rod is slidably connected in the containing cavity, a plurality of connecting rods are hinged to the control rod, and one end, away from the clamping groove, of the locking block extends into the containing cavity and is hinged to the connecting rods.

Preferably, the connecting rod comprises a first sliding block and a second sliding block which are in sliding connection with the accommodating cavity, a supporting rod is fixedly connected between the first sliding block and the second sliding block, and the connecting rod is hinged on the supporting rod; a first spring is fixedly connected between the top end of the first sliding block and the top end of the accommodating cavity; the second slider bottom with hold the chamber bottom and dismantle the connection, second slider bottom rigid coupling has the contact block, hold the bottom in chamber and seted up the groove that runs through, the contact block stretch into run through the groove and with run through groove sliding connection.

Preferably, the sealing assembly comprises a plurality of sealing plates in fan-shaped arrangement, the sealing plates form a circle which is arranged corresponding to the connecting hole, and the sealing plates are detachably connected; the side wall of the connecting hole is provided with a yielding groove which is arranged corresponding to the sealing plate, and the sealing plate is connected in the yielding groove in a sliding way; and a second spring is fixedly connected between the sealing plate and the abdication groove.

Preferably, the end surface tip of the closing plate far away from the locking nail is provided with grooves, and a plurality of grooves are communicated with one another; the groove is matched with the unlocking tool.

Preferably, the unlocking tool comprises a supporting plate, and the supporting plate is matched with the fixed frame and detachably connected with the fixed frame; the support plate is fixedly connected with a plurality of hydraulic cylinders which are arranged corresponding to the connecting holes, the output ends of the hydraulic cylinders extend out of the support plate and are fixedly connected with unlocking rods, and the unlocking rods are detachably connected with the contact blocks.

Preferably, the unlocking rod comprises a straight rod fixedly connected with the output end of the hydraulic cylinder, the straight rod is correspondingly arranged with the connecting hole and is detachably connected with the connecting hole, an unlocking head is fixedly connected with the top end of the straight rod, and the unlocking head is correspondingly arranged with the contact block and is detachably connected with the contact block.

Compared with the prior art, the utility model has the following advantages and technical effects: when the battery pack locking device is used, the fixing frame fixed with the battery pack is correspondingly placed under the chassis, and then the chassis is supported to enable the locking mechanism to be locked; when the battery pack is locked, the locking nails are inserted into the locking holes, the control piece controls the locking assembly to be locked with the locking holes, so that the mounting frame is locked on the chassis, and the battery pack is mounted; when the battery pack is unlocked, the unlocking tool is inserted into the connecting hole and pushes the control assembly to separate the locking assembly from the locking hole, the locking nails and the locking hole lose stress points, the mounting frame automatically falls under the action of gravity, the mounting frame is separated from the chassis, and the battery pack is detached; the sealing component aims to seal the connecting hole, prevent the connecting hole from being blocked by sundries or soil in the running process of the new energy automobile, and reduce the problem of unlocking failure caused by the blocking of the connecting hole.

The utility model has the advantages of convenient use, no connection through the bolts, avoiding the problem of damaged threads caused by repeated tightness of the bolts, reducing the problem of installation of the battery pack caused by thread failure, along with higher safety and higher efficiency of replacing the battery pack.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is an axial view of a fixed frame of the present utility model;

FIG. 2 is a schematic view of a locking mechanism according to the present utility model;

FIG. 3 is an enlarged view of a portion of FIG. 2A in accordance with the present utility model;

FIG. 4 is an enlarged view of a portion of B of FIG. 2 in accordance with the present utility model;

FIG. 5 is a schematic top view of the closure assembly of the present utility model;

FIG. 6 is a schematic diagram of an unlocking tool of the present utility model;

in the figure: 1. a fixed frame; 2. a chassis; 3. a connection hole; 4. locking nails; 5. a locking hole; 6. a communication groove; 7. a locking block; 8. a clamping groove; 9. a receiving chamber; 10. a control lever; 11. a connecting rod; 12. a first slider; 13. a second slider; 14. a support rod; 15. a first spring; 16. a contact block; 17. a through groove; 18. a closing plate; 19. a relief groove; 20. a second spring; 21. a groove; 22. a support plate; 23. a hydraulic cylinder; 24. unlocking the rod; 25. a straight rod; 26. and unlocking the lock head.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.

Referring to fig. 1-6, the embodiment provides a battery pack locking device of an electric vehicle, which comprises a fixing frame 1 for fixing a battery pack, wherein the fixing frame 1 is detachably connected to a chassis 2 of a new energy vehicle, and a plurality of locking mechanisms are arranged between the fixing frame 1 and the chassis 2;

the locking mechanism comprises a connecting hole 3 arranged on the fixed frame 1, a locking nail 4 is fixedly connected in the connecting hole 3, a locking hole 5 which is arranged corresponding to the locking nail 4 is arranged on the chassis 2, and the locking nail 4 can be detached in the locking hole 5;

a locking component is arranged in the locking nail 4 and is clamped with the locking hole 5; the locking component is in transmission connection with a control component in the locking nail 4, and the control component extends out from the bottom end of the locking nail 4;

the end of the connecting hole 3 remote from the chassis 2 is provided with a closing assembly.

When in use, the fixing frame 1 fixed with the battery pack is correspondingly placed under the chassis 2, and then the locking mechanism is locked by supporting; when in locking, the locking nails 4 are inserted into the locking holes 5, the control piece controls the locking assembly to be locked with the locking holes 5, so that the mounting frame is locked on the chassis 2, and the battery pack is mounted; when the battery pack is unlocked, the unlocking tool is inserted into the connecting hole 3 and pushes the control assembly to separate the locking assembly from the locking hole 5, the locking nails 4 and the locking holes 5 lose stress points, the mounting frame automatically falls under the action of gravity to separate the mounting frame from the chassis 2, and the battery pack is disassembled; the purpose of the sealing component is to seal the connecting hole 3, so that the problem that the connecting hole 3 is blocked by sundries or soil in the running process of a new energy automobile and the unlocking failure caused by the blocking of the connecting hole 3 is solved.

In a further optimized scheme, the locking assembly comprises a communication groove 6 formed in the side wall of the locking nail 4, a locking block 7 is slidably connected in the communication groove 6, a plurality of clamping grooves 8 which are arranged corresponding to the locking block 7 are formed in the side wall of the locking hole 5, and the locking block 7 extends out of the communication groove 6 and is detachably connected with the clamping grooves 8; one end of the locking block 7, which is far away from the clamping groove 8, is in transmission connection with the control component. The control assembly pushes the locking block 7 out of the communicating groove 6 and is clamped into the clamping groove 8, so that the locking nail 4 is fixed in the locking hole 5, and the mounting frame and the chassis 2 are firmly fixed.

In a further optimized scheme, the control assembly comprises a containing cavity 9 which is arranged in the locking nail 4 and is communicated with the communicating groove 6, a control rod 10 is connected in a sliding manner in the containing cavity 9, a plurality of connecting rods 11 are hinged on the control rod 10, and one end, far away from the clamping groove 8, of the locking block 7 extends into the containing cavity 9 and is hinged with the connecting rods 11; the connecting rod 11 comprises a first sliding block 12 and a second sliding block 13 which are in sliding connection with the accommodating cavity 9, a supporting rod 14 is fixedly connected between the first sliding block 12 and the second sliding block 13, and the connecting rod 11 is hinged on the supporting rod 14; a first spring 15 is fixedly connected between the top end of the first sliding block 12 and the top end of the accommodating cavity 9; the bottom end of the second sliding block 13 is detachably connected with the bottom end of the accommodating cavity 9, the bottom end of the second sliding block 13 is fixedly connected with a contact block 16, a penetrating groove 17 is formed in the bottom end of the accommodating cavity 9, and the contact block 16 stretches into the penetrating groove 17 and is in sliding connection with the penetrating groove 17. When unlocking, the contact span pushes the control rod 10 to rise, the angle of the connecting rod 11 between the supporting rod 14 and the locking block 7 is changed, so that the locking block 7 is contracted inwards to the accommodating cavity 9 and finally separated from the clamping groove 8, and the locking nail 4 can freely enter and exit the locking hole 5, thereby facilitating assembly and disassembly; when the locking is performed, the first spring 15 pushes the control rod 10 to move downwards, and the locking block 7 is pushed out of the outer wall of the locking nail 4 through the connecting rod 11 and is clamped into the clamping groove 8, so that the locking nail 4 and the clamping groove 8 are locked.

In a further optimized scheme, the sealing assembly comprises a plurality of sealing plates 18 which are arranged in a fan shape, the sealing plates 18 form a circle which is arranged corresponding to the connecting hole 3, and the sealing plates 18 are detachably connected; the side wall of the connecting hole 3 is provided with a relief groove 19 which is arranged corresponding to the sealing plate 18, and the sealing plate 18 is connected in the relief groove 19 in a sliding way; a second spring 20 is fixedly connected between the closing plate 18 and the abdication groove 19; the end surface tip of the closing plate 18, which is far away from the locking nail 4, is provided with grooves 21, and a plurality of grooves 21 are mutually communicated; the recess 21 is adapted to the unlocking means. When no external force is applied, the second spring 20 pushes the closing plate 18 out of the abdication groove 19, so that a plurality of closing plates 18 form a round shape, the connecting hole 3 is sealed, and foreign matters, soil and the like outside are prevented from entering the connecting hole 3; when unlocking is needed, the unlocking tool stretches into the groove 21 of the sealing plate 18, and finally the sealing plate 18 slides towards the yielding groove 19, so that the unlocking tool enters the connecting hole 3 and contacts with the contact block 16, and unlocking between the locking nail 4 and the locking hole 5 is achieved.

Further optimizing scheme, the unlocking tool comprises a supporting plate 22, and the supporting plate 22 is matched with and detachably connected with the fixed frame 1; a plurality of hydraulic cylinders 23 which are arranged corresponding to the connecting holes 3 are fixedly connected on the supporting plate 22, the output ends of the hydraulic cylinders 23 extend out of the supporting plate 22 and are fixedly connected with unlocking rods 24, and the unlocking rods 24 are detachably connected with the contact blocks 16; the unlocking rod 24 comprises a straight rod 25 fixedly connected with the output end of the hydraulic cylinder 23, the straight rod 25 is correspondingly arranged with the connecting hole 3 and is detachably connected with the connecting hole, an unlocking head 26 is fixedly connected with the top end of the straight rod 25, and the unlocking head 26 is correspondingly arranged with the contact block 16 and is detachably connected with the contact block 16. The supporting plate 22 is used for supporting the mounting frame, and is used for loading and unloading and transferring the mounting frame to realize the replacement of the battery pack; an unlocking rod 24 fixedly connected with the output end of the hydraulic cylinder 23 extends into the connecting hole 3, pushes the sealing component open and contacts the contact block 16, and pushes the control rod 10 to move upwards to realize recovery unlocking of the locking block 7; the tip of the unlocking head 26 is arranged into a pointed cone which is matched with the groove 21, so that the closing plate 18 can be conveniently jacked up, and the contact block 16 can be conveniently pushed.

In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the design spirit of the present utility model.

Claims (8)

1. The utility model provides an electric automobile battery package locking device which characterized in that: the novel energy automobile battery pack fixing device comprises a fixing frame (1) for fixing a battery pack, wherein the fixing frame (1) is detachably connected to a chassis (2) of the novel energy automobile, and a plurality of locking mechanisms are arranged between the fixing frame (1) and the chassis (2);

the locking mechanism comprises a connecting hole (3) formed in the fixed frame (1), a locking nail (4) is fixedly connected in the connecting hole (3), a locking hole (5) which is arranged corresponding to the locking nail (4) is formed in the chassis (2), and the locking nail (4) can be detached in the locking hole (5);

a locking assembly is arranged in the locking nail (4), and the locking assembly is clamped with the locking hole (5); the locking component is in transmission connection with a control component in the locking nail (4), and the control component extends out from the bottom end of the locking nail (4);

one end of the connecting hole (3) far away from the chassis (2) is provided with a sealing component.

2. The electric automobile battery pack locking device according to claim 1, wherein: the locking assembly comprises a communication groove (6) formed in the side wall of the locking nail (4), a locking block (7) is connected in the communication groove (6) in a sliding mode, a clamping groove (8) which is arranged corresponding to the locking block (7) is formed in the side wall of the locking hole (5), and the locking block (7) is detachably connected with the clamping groove (8); one end of the locking block (7) far away from the clamping groove (8) is in transmission connection with the control assembly.

3. The electric automobile battery pack locking device according to claim 2, wherein: the control assembly comprises a containing cavity (9) which is arranged in the locking nail (4) and is communicated with the communication groove (6), a control rod (10) is connected in the containing cavity (9) in a sliding mode, a plurality of connecting rods (11) are hinged to the control rod (10), and one end, far away from the clamping groove (8), of the locking block (7) stretches into the containing cavity (9) and is hinged to the connecting rods (11).

4. The electric automobile battery pack locking device according to claim 3, wherein: the connecting rod (11) comprises a first sliding block (12) and a second sliding block (13) which are in sliding connection with the accommodating cavity (9), a supporting rod (14) is fixedly connected between the first sliding block (12) and the second sliding block (13), and the connecting rod (11) is hinged on the supporting rod (14); a first spring (15) is fixedly connected between the top end of the first sliding block (12) and the top end of the accommodating cavity (9); the bottom of the second sliding block (13) is detachably connected with the bottom of the accommodating cavity (9), a contact block (16) is fixedly connected with the bottom of the second sliding block (13), a penetrating groove (17) is formed in the bottom of the accommodating cavity (9), and the contact block (16) stretches into the penetrating groove (17) and is in sliding connection with the penetrating groove (17).

5. The electric automobile battery pack locking device according to claim 4, wherein: the sealing assembly comprises a plurality of fan-shaped sealing plates (18), and the sealing plates (18) are detachably connected; the side wall of the connecting hole (3) is provided with a yielding groove (19) which is arranged corresponding to the sealing plate (18), and the sealing plate (18) is connected in the yielding groove (19) in a sliding way; a second spring (20) is fixedly connected between the closing plate (18) and the yielding groove (19).

6. The electric automobile battery pack locking device according to claim 5, wherein: the end surface tip of the closing plate (18) far away from the locking nail (4) is provided with grooves (21), and a plurality of grooves (21) are mutually communicated; the groove (21) is matched with the unlocking tool.

7. The electric automobile battery pack locking device of claim 6, wherein: the unlocking tool comprises a supporting plate (22), and the supporting plate (22) is matched with the fixed frame (1) and detachably connected with the fixed frame; the support plate (22) is fixedly connected with a plurality of hydraulic cylinders (23) which are arranged corresponding to the connecting holes (3), the output ends of the hydraulic cylinders (23) extend out of the support plate (22) and are fixedly connected with unlocking rods (24), and the unlocking rods (24) are detachably connected with the contact blocks (16).

8. The electric automobile battery pack locking device of claim 7, wherein: the unlocking rod (24) comprises a straight rod (25) fixedly connected with the output end of the hydraulic cylinder (23), the straight rod (25) is correspondingly arranged and detachably connected with the connecting hole (3), an unlocking head (26) is fixedly connected with the top end of the straight rod (25), and the unlocking head (26) is correspondingly arranged and detachably connected with the contact block (16).