CN111703289B

CN111703289B - Quick-change power battery installation system, locking method, unlocking method and electric automobile

Info

Publication number: CN111703289B
Application number: CN202010534956.5A
Authority: CN
Inventors: 李玉军; 侯艳丽; 李继明; 王世英; 魏永哲; 杨赫; 杨子发; 代康伟; 周德智
Original assignee: Beijing Electric Vehicle Co Ltd
Current assignee: Beijing Electric Vehicle Co Ltd
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2021-11-19
Anticipated expiration: 2040-06-12
Also published as: CN111703289A

Abstract

The invention discloses a quick-change power battery installation system, a locking method, an unlocking method and an electric automobile, wherein the power battery installation system comprises: the quick-change bracket and the power battery pack are replaced; the quick-change bracket is connected with a locking mechanism assembly, and the locking mechanism assembly comprises a plurality of locking mechanism bodies arranged on the quick-change bracket, a connecting part connected with the plurality of locking mechanism bodies, and a secondary locking mechanism; the secondary locking mechanism comprises a sliding assembly and a limiting assembly, and the sliding assembly is fixedly connected with the connecting component; when a plurality of locking mechanism bodies are all in the locking state, the limiting assembly is in the secondary locking state of the locking sliding assembly. According to the scheme provided by the invention, the detachable connection of the quick-change bracket and the quick-change power battery pack can be realized, the reliability of the locking state is improved, and the replacement operation of the quick-change power battery pack is fast.

Description

Quick-change power battery installation system, locking method, unlocking method and electric automobile

Technical Field

The invention relates to the technical field of automobiles, in particular to a quick-change power battery installation system, a locking method, an unlocking method and an electric automobile.

Background

The electric automobile is a vehicle which takes a vehicle-mounted power supply as power, drives wheels by a motor, and meets various requirements of road traffic and safety regulations. It uses the electricity stored in the power cell for starting.

When the electric quantity of the power battery is exhausted, the power battery needs to be charged immediately to ensure the normal running of the electric automobile, although charging facilities are continuously improved at present everywhere to ensure that the charging is more convenient, under the condition that the user time is urgent, a method for replacing the power battery of the electric automobile is mainly selected to solve the problems, and when the electric quantity of the power battery is insufficient, a fully charged battery pack can be directly replaced at a charging station. In the prior art, a power battery of an electric automobile is generally fixedly connected or bolted with an automobile body, and the problems of complex process of installing and uninstalling the battery and long time consumption exist.

Disclosure of Invention

In order to solve the technical problems, the invention provides a quick-change power battery mounting system, a locking method, an unlocking method and an electric automobile, and solves the problems that the mounting and dismounting processes of a power battery are complex and the time consumption is long in the prior art.

According to an aspect of the present invention, there is provided a quick-change power battery mounting system, comprising: the quick-change power battery pack is characterized in that a plurality of locking parts are arranged on the side wall of the quick-change power battery pack;

quick change support with set up in locking mechanism assembly on the quick change support, locking mechanism assembly includes: a plurality of locking mechanism bodies, a connecting member connected to the plurality of locking mechanism bodies; and a secondary locking mechanism;

the secondary locking mechanism comprises a sliding assembly and a limiting assembly, and the sliding assembly is fixedly connected with the connecting component; when the plurality of locking mechanism bodies are in a locking state, the limiting assembly is in a secondary locking state for locking the sliding assembly.

Optionally, when the limiting assembly is in an unlocked state separated from the sliding assembly, the connecting member drives the plurality of locking mechanism bodies to enter the unlocked state when the sliding assembly is pushed to slide along the first direction.

Optionally, the sliding assembly includes: a slide rail structure and an unlocking shifting block;

the unlocking shifting block is arranged on the sliding rail structure in a sliding mode and is fixedly connected with the connecting part;

when the secondary locking state is achieved, the limiting assembly is abutted to the unlocking shifting block to prevent the unlocking shifting block from sliding and unlocking along the sliding rail structure.

Optionally, the sliding assembly further includes:

the magnetic block is arranged on the unlocking shifting block;

the sensor is arranged on the first plate body and corresponds to the unlocking shifting block provided with the magnetic block in the secondary locking state; and when the secondary locking state is realized, the sensor outputs an electric signal.

Optionally, the limiting assembly comprises a reset member;

in the secondary locking state, the limiting assembly pivots to a position abutting against the sliding assembly under the action of the resetting piece.

Optionally, the connecting component includes a plurality of flexible shafts; two adjacent locking mechanism bodies are connected through the flexible shaft.

Optionally, the locking mechanism assembly further includes: a self-restoring spring; the self-restoring spring is in a state of pulling the connection member in a direction opposite to the first direction.

Optionally, the locking mechanism body includes: the outer edge of the ratchet wheel is provided with a notch matched with the locking part;

when the quick-change power battery pack is lifted and mounted, the ratchet wheel is pushed by the locking part to drive the ratchet wheel to rotate around a ratchet wheel shaft, the locking mechanism body enters a locking state that the locking part is locked into the opening, and the pawl rotates around a pawl shaft to be clamped with the ratchet wheel;

the pawls in the plurality of locking mechanism bodies are connected by a connecting member;

under the condition that the connecting component is pushed to move along the first direction, the pawls are driven to rotate to be separated from the ratchet wheel, and the ratchet wheel rotates around the ratchet wheel shaft to be in an unlocking state of releasing the locking part from the notch.

Optionally, the locking mechanism body further includes:

and the pawl resetting structure is used for enabling the ratchet wheel to rotate along the first time hand direction to enable the opening to be in a locking state, and enabling the pawl to rotate to a position where the ratchet wheel is clamped.

Optionally, the locking mechanism body further includes:

and the ratchet wheel resetting structure is used for enabling the ratchet wheel to rotate to a position when the opening is in an unlocking state through the ratchet wheel resetting structure when the pawl rotates to be separated from the ratchet wheel.

Optionally, an unlocking operating lever extending out of the locking mechanism body is arranged on the pawl;

the unlocking operating rod is fixedly connected with the connecting component.

Optionally, a microswitch is connected to the locking mechanism body; when in the locking state, the ratchet wheel contacts the microswitch, and the microswitch is closed;

and when the unlocking state is realized, the ratchet wheel is separated from the microswitch, and the microswitch is disconnected.

Optionally, the locking mechanism body further includes: a detection device for detecting the position of the ratchet wheel;

when the ratchet wheel is in a locking state, the detection device outputs a first electric signal; when the ratchet wheel is in the unlocking state, the detection device outputs a second electric signal.

Optionally, the locking portion is a snap ring.

Optionally, the quick-change bracket includes: a first plate body enclosing to form an installation space; the quick-change power battery pack is placed in the installation space.

According to another aspect of the present invention, there is provided a locking method for a quick-change power battery pack, which is applied to the quick-change power battery mounting system as described above, and in the process of locking the quick-change power battery pack, the method includes:

controlling the limiting assembly to pivot to be separated from the sliding assembly, and completing primary unlocking;

controlling the quick-change power battery and the locking mechanism body to move relatively, wherein the locking parts on the quick-change power battery pack correspondingly push the locking mechanism bodies one by one, so that the locking parts are locked into the locking mechanism bodies at the same time, and one-time locking operation is completed;

and the secondary locking operation is completed by controlling the limiting assembly to pivot until the limiting assembly abuts against the sliding assembly.

According to a further aspect of the present invention, there is provided an unlocking method for a quick-change power battery pack, which is applied to the quick-change power battery mounting system as described above, and in the process of unlocking the quick-change power battery pack, the method includes:

after once the unblock is accomplished, through promoting the slip subassembly slides along first direction, adapting unit drives a plurality of locking mechanism bodies and unblocks simultaneously quick change power battery package.

According to yet another aspect of the present invention, there is provided an electric vehicle including a quick-change power battery mounting system as described above.

The embodiment of the invention has the beneficial effects that:

in the scheme, a plurality of locking parts are arranged on the side wall of the quick-change power battery pack; a locking mechanism assembly is connected to the quick-change bracket, so that the quick-change bracket is detachably connected with the quick-change power battery pack through the locking mechanism assembly; wherein, locking mechanism assembly includes: the locking mechanism bodies are arranged on the quick-change bracket at intervals; a connecting member connected to the plurality of locking mechanism bodies, and a secondary locking mechanism; the secondary locking mechanism comprises a sliding assembly and a limiting assembly, and the sliding assembly is fixedly connected with the connecting component; when a plurality of locking mechanism bodies all were in the locking state, the restriction subassembly was in the secondary locking state of locking slip subassembly, avoided unexpected unblock risk. The scheme finally realizes the detachable connection of the quick-change power battery pack and the vehicle body, facilitates the replacement process of the power battery, and improves the replacement efficiency and locking reliability of the power battery.

Drawings

Fig. 1 shows one of the schematic structural diagrams of a quick-change power battery mounting system according to an embodiment of the invention;

fig. 2 shows a second schematic structural diagram of a quick-change power battery mounting system according to an embodiment of the invention;

FIG. 3 is a schematic view showing a state in which the quick-change holder and the locking mechanism assembly are coupled according to the embodiment of the invention;

FIG. 3a is an enlarged view of the left half of FIG. 3 illustrating an embodiment of the present invention;

FIG. 3b is an enlarged view of the right half of FIG. 3 according to an embodiment of the present invention;

FIG. 4 is a second schematic view illustrating a connection state of the quick-change holder and the locking mechanism assembly according to the embodiment of the invention;

FIG. 4a is an enlarged view of the left half of FIG. 4 illustrating an embodiment of the present invention;

FIG. 4b is an enlarged view of the right half of FIG. 4 according to an embodiment of the present invention;

FIG. 5a is an enlarged view of the left half of FIG. 5 illustrating an embodiment of the present invention;

FIG. 5b is an enlarged view of the right half of FIG. 5 according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a locking mechanism assembly according to an embodiment of the present invention;

FIG. 6 is a second schematic structural view of a locking mechanism assembly according to an embodiment of the present invention;

FIG. 6a is an enlarged view of the left half of FIG. 6 illustrating an embodiment of the present invention;

FIG. 6b is an enlarged view of the right half of FIG. 6 according to an embodiment of the present invention;

FIG. 7 is an enlarged schematic view of the structure of FIG. 5-5 b at E1 according to an embodiment of the present invention;

FIG. 8 shows an enlarged schematic view of the structure at D1 in FIGS. 5 and 5a of an embodiment of the present invention;

FIG. 9 shows an exploded view of the structure of FIG. 5 and FIG. 5a at D1 according to an embodiment of the present invention;

FIG. 10 is an enlarged schematic view of the structure at A2 in FIGS. 2-4 b according to an embodiment of the present invention;

FIG. 11 is an enlarged view of one of the structures shown in FIGS. 2 to 3a, 4 and B of FIG. 4a according to the embodiment of the present invention;

FIG. 12 is an enlarged view of the second embodiment of the present invention, shown in FIGS. 2 to 3a, 4 and B of FIG. 4 a;

FIG. 13 shows an enlarged schematic view of the structure at C in FIGS. 3 and 3a of an embodiment of the present invention;

FIG. 14 is an enlarged view of the structure at A1 in FIGS. 2-3 a, 4 and 4a according to an embodiment of the present invention;

FIG. 15 shows an exploded view of the structure of FIG. 5 and FIG. 5a at G1 according to an embodiment of the present invention;

fig. 16 is a schematic view showing an unlocked state of the locking mechanism body according to the embodiment of the invention;

fig. 17 is a view showing one of lock states of a lock mechanism body according to the embodiment of the invention;

fig. 18 shows a first exploded view of the locking mechanism body of the embodiment of the present invention;

fig. 19 shows a second exploded view of the locking mechanism body of the embodiment of the present invention;

fig. 20 is a view showing one of the lock states of the lock mechanism body according to the embodiment of the invention;

FIG. 21 is a second schematic view showing a locked state of the lock mechanism body according to the embodiment of the present invention;

fig. 22 is a schematic structural diagram of a quick-change power battery pack according to an embodiment of the invention;

FIG. 23 is an enlarged partial schematic view at F of FIG. 22 illustrating an embodiment of the present invention;

figure 24 shows a schematic structural view of an electrical connector according to an embodiment of the present invention.

Description of reference numerals:

1-quickly changing a power battery pack;

10-a lock catch seat;

11-a shackle;

12-positioning blocks;

13-an electrical connector;

2-quick change of the bracket;

21-a first plate body;

22-flanging;

221-bolt;

3-locking mechanism body;

31-a lower cover plate;

311-a ratchet shaft;

312-pawl shaft;

313-pawl limit block;

314-a notch;

315-first bolt mounting hole;

316-a first stopper;

32-ratchet wheel;

321-a gap;

322-inclined plane;

33-pawl;

331-an unlocking lever;

332-locking surface;

34-ratchet return spring;

35-pawl return spring;

36-upper cover plate;

361-strip-shaped through holes;

362-arcuate opening;

37-a damper block;

38-a microswitch;

4-a flexible shaft;

41-linear bearings;

42-supporting sheet metal blocks;

43-connecting sheet metal pieces;

5-a lock body;

51-a first mounting hole;

52-a reset member;

53-a limiting column;

61-unlocking shifting block;

611-a protruding shaft;

62-a slide rail;

63-linear slide block;

64-a rubber block;

65-a sensor;

7-self-restoring spring.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

Embodiments of the present invention provide a quick-change power battery mounting system, as shown in fig. 1-2, which show a front view and a side view, respectively, of a quick-change power battery mounting system.

Specifically, as shown in fig. 1 to 22, the quick-change power battery mounting system includes: the quick-change power battery pack comprises a quick-change power battery pack 1, a quick-change bracket 2 and a locking mechanism assembly;

a plurality of locking parts are arranged on the side wall of the quick-change power battery pack 1; the quick-change support 2 is connected with a locking mechanism assembly, and the quick-change support 2 is detachably connected with the quick-change power battery pack 1 through the locking mechanism assembly;

the locking mechanism assembly includes: a plurality of locking mechanism bodies 3, a connecting member connected to the plurality of locking mechanism bodies 3; and a secondary locking mechanism;

the secondary locking mechanism comprises a sliding assembly and a limiting assembly, and the sliding assembly is fixedly connected with the connecting component; when the plurality of locking mechanism bodies 3 are in the locked state, the limiting assembly is in a secondary locked state for locking the sliding assembly.

Further, when the limiting assembly is in an unlocked state separated from the sliding assembly, the connecting member drives the plurality of locking mechanism bodies 3 to enter the unlocked state under the condition that the sliding assembly is pushed to slide along the first direction.

In this embodiment, a plurality of locking parts are arranged on the side wall of the quick-change power battery pack; connecting locking mechanism assemblies on two opposite side walls of the quick-change bracket to realize that the quick-change bracket is detachably connected with the quick-change power battery pack through the locking mechanism assemblies; further, the locking mechanism assembly comprises a plurality of locking mechanism bodies 3, a connecting part and a secondary locking mechanism; slide along the first direction through the slip subassembly that promotes among the secondary locking mechanism, drive adapting unit motion, further drive a plurality of locking mechanism bodies 3 simultaneously through adapting unit's motion and realize the linkage unblock, improve unblock efficiency. The limiting assembly in the secondary locking mechanism is abutted against the sliding assembly in the locking position, secondary locking of the system is achieved, reliability of a locking state is improved, and risk of accidental unlocking is avoided. The quick-change power battery mounting system of the embodiment is simple in structure and convenient for replacement and maintenance of the quick-change power battery; the unlocking and locking are flexible, the design of large fault tolerance is realized, and the battery box body can be manually disassembled; the lock body interface can be unified, standardization and universalization of the battery replacement station are facilitated, the replacement process of the quick-change power battery is facilitated, and replacement efficiency of the quick-change power battery is improved.

Alternatively, a schematic view of the state of mounting of the slide assembly on the quick-change holder 2 is shown at B in fig. 2 to 3a, 4 and 4 a; fig. 5 and 5a are front schematic views showing a connection state of the slider assembly and the link member at D1; fig. 6 and 6a are schematic top views of the connection state of the slide module and the connection member at D2.

Specifically, as shown in fig. 8, 9, 11 and 12, the sliding assembly includes: a slide rail structure and an unlocking toggle block 61; the unlocking shifting block 61 is arranged on the sliding rail structure in a sliding manner and is fixedly connected with the connecting part; when the secondary locking state is achieved, the limiting assembly is abutted to the unlocking shifting block 61, so that the unlocking shifting block 61 is prevented from sliding and unlocking along the sliding rail structure.

In this embodiment, through the slide rail structure, realize that unblock shifting block 61 is the rectilinear slip along the slide rail structure, when improving unblock shifting block 61 motion reliability, avoid unblock shifting block 61 to move along other movement tracks, lead to the locking and the unusual problem of unblock process to take place, improved the reliability of unblock and locking process.

Specifically, an unlocking shifting block 61 for connecting with an unlocking device is fixedly connected to the connecting part; the slide rail structure is arranged on the quick-change bracket 2 and at a position corresponding to the unlocking shifting block 61; the unlocking shifting block 61 is connected with the sliding rail structure in a sliding manner; under the condition that the unlocking shifting block 61 is pushed to slide on the slide rail structure along a first direction, the connecting part moves along the first direction to drive the quick-change power battery pack 1 to be unlocked from the plurality of locking mechanism bodies 3 simultaneously;

when the locking parts are in a locking state locked on the locking mechanism bodies 3 respectively, the limiting assembly is in a secondary locking state abutting against the unlocking shifting block 61 so as to prevent the connecting part from moving along the first direction;

in the unlocked state, the restricting member is separated from the unlocking paddle 61.

In this embodiment, the slide rail structure may be a slide rail structure with a groove, and the unlocking shifting block 61 is arranged in the groove of the rail to slide; specifically, the slide rail structure can also be a bar-shaped slide block 62, and the bar-shaped slide block 62 is slidably arranged through the unlocking shifting block 61.

Further, the sliding assembly further comprises: a linear slider 63; the unlocking shifting block 61 is fixedly connected with the linear sliding block 63; the linear sliding block 13 is connected with the sliding rail structure in a sliding mode.

In this embodiment, the unlocking shifting block 61 is fixedly connected with the linear sliding block 63, and then the linear sliding block 63 is slidably connected with the sliding rail structure, so that the accuracy of the motion track of the unlocking shifting block 61 can be further improved.

Further, the slide rail structure can be a slide rail structure with a groove, and the unlocking shifting block 61 is arranged in the groove of the rail and slides; specifically, the slide rail structure may also include: a bar-shaped slider 62; the linear sliding block 63 is provided with a slide way, and the strip-shaped sliding block 62 is arranged in the slide way in a penetrating way.

In this embodiment, the unlocking shifting block 61 is fixedly connected with the linear sliding block 63, and then the linear sliding block 63 is slidably connected with the bar-shaped sliding block 62, so that the accuracy of the motion track of the unlocking shifting block 61 can be further improved.

Preferably, the sliding assembly further comprises:

a shock absorption block 64, wherein the shock absorption block 64 is connected with the quick-change bracket 2;

when in the secondary locking state, the damping block 64 abuts against one end, away from the limiting assembly, of the unlocking shifting block 61.

In this embodiment, the rubber block 64 provides buffering and limiting functions for the unlocking shifting block 61, so as to limit the position of the unlocking shifting block 61 in the secondary locking state; specifically, the snubber block 64 is the rubber block, and rubber material has avoided the collision damage to unblock shifting block 61, prolongs the life of unblock shifting block 61.

Preferably, the sliding assembly further comprises:

the magnetic block is arranged on the unlocking shifting block 61;

the sensor 65 is installed on the quick-change bracket 2 and at a position corresponding to the unlocking shifting block 61 provided with the magnetic block when the unlocking shifting block is in the secondary locking state;

and when the secondary locking state is realized, the sensor outputs an electric signal.

In this embodiment, the sensor 65 is electrically connected to the external controller via the wiring harness 23 and the electrical connector 13, and the sensor 65 may be powered by an electric vehicle. If two or more sensors 65 are included in the embodiment of the present invention, the plurality of sensors 65 are electrically connected to the external controller after being connected in series, and when the electrical signals output by the plurality of sensors 65 are all electrical signals indicating that the quick change power battery pack 1 is locked in place for the second time, it is determined that the quick change power battery pack 1 is locked in place for the second time. Through this scheme, can effectively detect the secondary locking state on quick change power battery package 1 and the locking mechanism body 3, guarantee locking state reliability.

It should be noted that the principle of the sensor 65 is as follows: when a magnetic object approaches the sensor 65, the hall element on the switch detection surface of the sensor 65 generates a hall effect to change the state of the internal circuit of the switch, so that the on/off of the switch is controlled by the magnetic object; preferably, the current effective action distance is 5 mm.

Alternatively, shown at C in fig. 3 and 3a is a schematic view of the mounting of the restraining assembly on the quick-change holder 2; fig. 5 and 5a are front schematic views showing the connection state of the restricting assembly and the sliding assembly at D1; a top view of the connection of the restraining assembly to the slider assembly is shown at D2 in fig. 6 and 6 a.

Further, the restricting assembly includes: a reset member 52; in the secondary locking state, the limiting assembly pivots to a position abutting against the sliding assembly under the action of the resetting piece.

Specifically, as shown in the enlarged partial views of fig. 8, 9 and 13, the limiting assembly includes a lock body 5 and a rotating shaft; the lock body 5 with the pivot is rotated and is connected, lock body 5 when rotating, have with the locking position that sliding component supported and with the unblock position of sliding component separation. Through the piece that resets, lock body 5 rotates around the pivot to leaning on with the sliding component.

In this embodiment, the reset member 52 includes a spring, and the lock body 5 in the natural state is in the locked state under the pulling force of the reset member 52. When the unlocking is needed, the unlocking device is used for jacking the lock body 5 to rotate around the rotating shaft to be separated from the protruding shaft 611, and the unlocking is completed.

Specifically, the restricting member further includes: a stopper post 53; in the primary locking position, the limit post 53 abuts against one side of the lock body 5.

Specifically, the lock body 5 is provided with a first mounting hole 51; a second mounting hole is formed in the quick-change bracket 2; the first mounting hole 51 and the second mounting hole are penetrated through by a rotating shaft, and the lock body 5 is rotatably connected with the quick-change bracket 2.

In this embodiment, the lock body 5 is mounted on the inner side wall of the quick-change holder 2 as shown in fig. 3; the sliding assembly is arranged on the outer side wall of the quick-change support 2 shown in fig. 3, and when the lock body 5 is in a secondary locking state, the lock body rotates to a state abutted against the unlocking shifting block 61 around the rotating shaft, so that the unlocking of the unlocking shifting block 61 is fixed, and the unlocking of the unlocking shifting block 61 along the sliding in the first direction is prevented.

Specifically, as shown in fig. 13, a protruding shaft 611 is arranged on the unlocking shifting block 61, a sliding through hole of the protruding shaft 611 is arranged on the quick-change bracket 2, the protruding shaft 611 penetrates through the sliding through hole and protrudes, and in the secondary locking state, the lock body 5 rotates around the rotating shaft and abuts against the protruding shaft 611, so that the fixed locking of the unlocking shifting block 61 is realized, and the unlocking of the unlocking shifting block 61 due to movement is avoided.

Further, in an embodiment, as shown in fig. 13, the limiting assembly further includes: a reset piece 52 and a spacing post 53; a first extending end of the resetting piece 52 is fixedly connected with the lock body 5, and a second extending end of the elastic piece 52 is fixedly connected with the quick-change bracket 2;

in the secondary locking state, the lock body 5 abuts against the limit post 53 under the pulling of the reset piece 52.

In this embodiment, under the pulling force of the reset member 52 and the limiting effect of the limiting column 53, the secondary lock body 5 in the natural state is in the secondary locking state as shown in fig. 13, when unlocking is required, the unlocking device is used to jack up the lock body 5 to rotate around the rotating shaft to be separated from the protruding shaft 611, that is, the unlocking device can be used to push the protruding shaft 611 to move toward the lock body 5, so that the unlocking shifting block 61 and the connecting member can be driven to move along the first direction, the quick-change power battery pack 1 is unlocked from the plurality of locking mechanism bodies 3, and the quick-change power battery pack 1 is detachably connected to the quick-change bracket 2.

As shown in fig. 5 to 11, as an implementation manner, the connecting member includes a plurality of flexible shafts 4; the two adjacent locking mechanism bodies 3 are connected through the flexible shaft 4. The simultaneous unlocking of the plurality of locking mechanism bodies 3 is achieved by the connecting member.

In this embodiment, the flexible shaft 4 connects the plurality of locking mechanisms 3 arranged on the quick-change bracket 2 at intervals, and the flexible shaft 4 can better adapt to the quick-change power battery packs 1 and the quick-change bracket 2 with different envelope shapes, without individually customizing different connecting parts according to the envelope shapes of the different quick-change power battery packs 1. Furthermore, for the quick-change power battery pack 1 with an irregular shape as shown in fig. 1, the flexible shaft 4 can be designed into a locking mechanism assembly as shown in fig. 6, and at the part needing to turn, the flexible shaft can better adapt to the curved radian, and the reciprocating motion of the connecting part in the unlocking and locking processes is not influenced.

Further, as shown in fig. 5 to 8 and 10, the flexible shaft 4 is sleeved with a linear bearing 41;

the linear bearing 41 is connected to the quick-change holder 2 via a support sheet metal block 42.

In this embodiment, the number of the linear bearings 41 is plural, the flexible shaft 4 is movably disposed through the linear bearings 41, the plural linear bearings 41 limit the moving track of the flexible shaft 4, and the support sheet metal block 42 is further utilized to fix the linear bearings 41 on the quick-change support 2. This embodiment has effectively improved the reliability of flexible axle 4 motion in-process, is favorable to improving the motion reliability of flexible axle 4 among unblock and the locking process, avoids like the emergence of the unblock that the flexible axle 4 shifted unusually and leads to and locks the unusual condition of process.

Shown at a1 and a2 in fig. 3 to 4b are schematic views of the mounted state of the locking mechanism body 3 on the quick-change holder 2; fig. 5 to 5b are schematic front views at E1 showing a connection state of the lock mechanism body 3 with the connection member in the lock mechanism assembly; fig. 6 to 6b are schematic top views of the locking mechanism body 3 connected to the connecting member in the locking mechanism assembly at E2.

Next, the connection relationship between the locking mechanism body 3 and the quick-change holder 2, the connection relationship between the locking mechanism body 3 and the coupling member, and the specific structure of the locking mechanism body 3 will be described with reference to fig. 7, 10, and 16 to 21. Note that fig. 10 does not depict the lock portion when corresponding to a partially enlarged view at a in fig. 2, and a state diagram in which the lock mechanism body 3 is connected to the lock portion can be seen in fig. 14, 20, and 21.

Specifically, the locking mechanism body 3 includes: the ratchet wheel 32 and the pawl 33, the outer edge of the ratchet wheel 32 is provided with a notch 321 matched with the locking part;

when the power battery pack 1 is lifted and mounted, the ratchet wheel 32 is pushed by the locking part, the ratchet wheel 32 is driven to rotate around the ratchet wheel shaft 311, the locking mechanism body 3 enters a locking state that the locking part is locked into the notch 321, and the pawl 33 rotates around the pawl shaft 312 to be clamped with the ratchet wheel 32;

the pawls 33 in the plurality of locking mechanism bodies 3 are connected by a connecting member;

when the connecting member is pushed to move in the first direction, the pawls 33 are rotated to be separated from the ratchet wheel 32, and the ratchet wheel 32 rotates around the ratchet shaft 311 to an unlock state in which the locking portion is released from the notch 321.

In this embodiment, a plurality of locking parts are arranged on the side wall of the quick-change power battery pack; connecting locking mechanism assemblies on two opposite side walls of the quick-change bracket to realize that the quick-change bracket is detachably connected with the quick-change power battery pack through the locking mechanism assemblies; further, the locking mechanism assembly comprises a plurality of locking mechanism bodies 3 and connecting parts; the locking process of the embodiment is simple and reliable, and the quick-change power battery pack can be locked on the quick-change bracket 2 only by lifting the quick-change power battery upwards and correspondingly pushing the ratchet wheel 32 in each locking mechanism body 3 to rotate by utilizing the plurality of locking parts on the quick-change power battery pack until the locking parts are locked into the corresponding notches 321; further, the pawls 33 in the plurality of locking mechanism bodies 3 are connected with the connecting part, and the pawls 33 in each locking mechanism body 3 are driven to be separated from the ratchet wheel 32 by pushing the connecting part to move, so that linkage unlocking is realized, and unlocking efficiency is improved. Therefore, the quick-change power battery mounting system of the embodiment is simple in structure and convenient for replacing and maintaining the quick-change power battery; the unlocking and locking are flexible, the design of large fault tolerance is realized, and the battery box body can be manually disassembled; the lock body interface can be unified, standardization and universalization of the battery replacement station are facilitated, the replacement process of the quick-change power battery is facilitated, and replacement efficiency of the quick-change power battery is improved.

Preferably, as shown in fig. 16 to 21, the upper end surface of the gap 321 is provided with an inclined surface 322 extending obliquely outward;

under the condition that the locking part pushes the inclined surface 322, the ratchet wheel 32 is driven to rotate relative to the ratchet wheel shaft 311 to enable the locking part to enter a locking state locked in the notch 321.

In this embodiment, an inclined plane 322 extending obliquely outward is disposed on one side of the notch 321, on one hand, the inclined plane 322 can provide a pushing surface for pushing the ratchet 32 to rotate along the first direction, and the unlocking device or the quick-change power battery pack 1 pushes the inclined plane 322 to drive the ratchet 32 to rotate by a certain angle; on the other hand, when the pushing ratchet wheel 32 rotates by a certain angle, the notch 321 is driven to rotate by a certain angle, and the inclined surface 322 is obliquely arranged at the opening end on one side of the notch 321, so that when the quick-change power battery pack 1 is lifted and mounted, the inclined surface 322 is pushed by the locking part, and the locking part slides into the notch 321 along the inclined surface 322 after the ratchet wheel 32 rotates by a certain angle, so that locking connection of the locking part is completed, the mounting process of the quick-change power battery pack 1 is facilitated, and the mounting efficiency is improved; furthermore, during the locking state, inclined plane 322 still can be as the face of supporting with pawl 33 joint, prevents ratchet 32 follows the opposite direction rotation unblock of first minute hand direction has realized the fixed ratchet 32 of locking, avoids ratchet 32 to rotate the unblock, has spacing locking effect.

Further, the pawl 33 is provided with a convex locking surface 332 on a side close to the ratchet wheel 32;

in the locked state, the locking surface 332 abuts against the inclined surface 322, preventing the ratchet wheel 32 from rotating until the locking part is released from the notch 321.

In this embodiment, the inclined plane 322 on the ratchet 32 is matched with the locking surface 332 on the pawl 33, and the contact area between the surface and the surface is large, so that the risk of accidental unlocking of the ratchet 32 is effectively reduced, and the reliability and stability of the locking mechanism body 3 in a locking state are improved. Meanwhile, when the pawl 33 is separated from the ratchet wheel 32 by external force, the ratchet wheel 32 moves in the opposite direction of the first time hand direction, so that the locking part is released from the notch 321, the quick-change power battery pack 1 is separated from the locking mechanism body 3, and unlocking is completed.

Preferably, the locking part is in a shape matched with the notch 321, that is, the diameter of the locking part is matched with the radian of the bottom of the notch 321, so that the locking part can be inserted into the notch 321 conveniently. In addition, the locking part can also be in other shapes, such as a lock catch ring, a polygon prism and the like, as long as the notch 321 and the locking part can be matched.

Note that, in the lock mechanism body 3 shown in fig. 16 to 17, the first clock direction described above is a counterclockwise direction. It will be appreciated that the first direction is clockwise if the ratchet 32 is on the right and the pawl 33 is on the left.

Further, in order to improve the convenience of the unlocking operation, an unlocking operation lever 331 extending to the outside of the locking mechanism body 3 is provided on one end of the pawl 33 away from the pawl shaft 312; the unlocking lever 331 is fixedly connected to the connecting member at an end remote from the pawl 33.

In this embodiment, the unlocking lever 331 is pushed to drive the pawl 33 to separate from the inclined surface 322 of the ratchet wheel 32, and the ratchet wheel 32 that loses the limit of the pawl 33 rotates in the opposite direction of the first clock hand direction, so that the locking portion is released from the notch 321, and unlocking is completed. Preferably, the unlocking operation lever 331 may have a column structure, and is vertically disposed at one end of the pawl 33.

Specifically, as shown in fig. 7 and 10, the connecting member includes a connecting sheet metal piece 43;

the connecting sheet metal piece 43 is provided with a through hole;

the unlocking operation lever 331 penetrates through the through hole and is fixedly connected with the connecting sheet metal piece 43.

Furthermore, two adjacent connecting sheet metal pieces 43 are fixedly connected through a flexible shaft 4 in the connecting part.

In this embodiment, the connecting sheet metal piece 43 and the flexible shaft 4 can be fixedly connected by a bolt.

Further, as shown in fig. 5a, fig. 6a, fig. 14 and fig. 15, the quick-change power battery mounting system further includes: a self-restoring spring 7; the self-restoring spring 7 is in a state of pulling the connection member in the reverse direction of the first direction.

Wherein, a front view schematic diagram of a connection state of the self-restoring spring 7 and the connection member is shown at G1 in fig. 5 and 5 a; fig. 6 and 6a are schematic top views of the connection state of the self-restoring spring 7 and the connection member at G2;

specifically, a first extending end of the self-restoring spring 7 is connected with the quick-change bracket 2, and a second extending end of the self-restoring spring 7 is connected with the connecting part;

the self-restoring spring 7 is in a state of pulling the connection member in the reverse direction of the first direction.

In this embodiment, when each locking mechanism body 3 is in the unlocked state, the self-restoring spring 7 provides an acting force for moving the connecting member in the direction opposite to the first direction, and under the pulling action of the elastic force of the self-restoring spring 7, the connecting member can move in the direction opposite to the first direction without connecting the unlocking device or without an external force, so that the connecting member automatically returns to the position in the locked state. Furthermore, when each locking mechanism body 3 is in the locking state, because the self-restoring spring 7 provides the acting force for the connecting part to move in the direction opposite to the first direction, the resistance for the connecting part to move in the first direction for unlocking can be given, the risk that the connecting part is moved in the first direction due to the fact that the connecting part is not manually moved by external force is avoided to a certain extent, and the locking mechanism bodies 3 are driven to be unlocked simultaneously, so that the reliability of the locking state of the locking mechanism assembly is guaranteed.

Specifically, as shown in fig. 14, a first extending end of the self-recovery spring 7 is connected to the fixing member, a second extending end of the self-recovery spring 7 is connected to the connecting sheet metal piece 43, the self-recovery spring 7 pulls the connecting sheet metal piece 43 connected to the self-recovery spring 7 to drive the connecting sheet metal pieces 43 connected to the other lock bodies through the flexible shaft 4 to link, so as to drive the unlocking operation levers 331 to link, and the movement of the unlocking operation levers 331 drives the pawls 33 to automatically return to a locking state where the pawls 33 abut against the pawl limit blocks 313 and the pawls 33 are engaged with the ratchet 32, thereby completing the locking operation.

In an alternative embodiment, in order to protect the movement of the ratchet wheel 32 and the pawl 33 from the external environment, which affects the reliability and stability of the locking mechanism, and also to improve the service life of the locking mechanism, the ratchet wheel 32 and the pawl 33 are disposed in the accommodating cavity formed between the upper cover plate 36 and the lower cover plate 31;

a plurality of lower cover plates 31 are fixed on the quick-change bracket 2 at intervals.

Specifically, as shown in fig. 18 to 21, the lower cover plate 31 is bent to form an accommodating groove;

an upper cover plate 36 is buckled on the accommodating groove, an accommodating cavity is formed between the upper cover plate 36 and the lower cover plate 31, the ratchet 32 and the pawl 33 are arranged in the accommodating cavity, as shown in fig. 20 and 21, the accommodating cavity is a schematic three-dimensional structure diagram and a schematic front view diagram of a locking mechanism with the upper cover plate 36, in the drawings, the upper cover plate 36 is matched with the lower cover plate 31, the ratchet 32 and the pawl 33 are arranged in the formed accommodating cavity, and the functions of protecting the ratchet 32, the pawl 33 and other components can be achieved.

Further, based on the above embodiment, in order to facilitate the unlocking operation, the pawl 33 is provided with an unlocking operation lever 331 extending to the outside of the locking mechanism body;

the unlocking lever 331 is fixedly connected to the connecting member.

Specifically, the upper cover plate 36 is provided with a strip-shaped through hole 361 at an unlocking movable position corresponding to the unlocking operation lever 331; the unlock lever 331 is a member provided at the pawl 33 and distant from one end of the pawl shaft 312; one end of the unlocking operating rod 331, which is far away from the pawl 33, passes through the strip-shaped through hole 361 and is fixedly connected with the connecting component.

Further, as shown in fig. 16 to 19, the lower cover plate 31 is provided with a notch 314 with a downward opening;

in the locking state, the locking portion penetrates through the notch 314, and the notch 314 and the notch 321 enclose to form a locking hole, so that the locking portion is locked in the locking hole.

In this embodiment, the lower cover plate 31 is provided with a notch 314 with a downward opening, when the quick-change power battery pack 1 is installed, the locking portion on the quick-change power battery pack 1 is inserted into the notch 314, the notch 314 limits a movement space of the locking portion along the vertical direction, and the locking portion is prevented from pushing the ratchet 32 without limitation in the locking process; further, in the locked state shown in fig. 17, the notch 314 locks and fixes the locking portion in a locking hole together with the notch 321, thereby improving the reliability of the locked state.

In an alternative embodiment of the present invention, the locking mechanism body 3 further includes: and the pawl resetting structure is used for enabling the pawl 33 to rotate to the position in which the pawl 32 is clamped with the ratchet wheel 32 through the pawl resetting structure when the ratchet wheel 32 rotates to the position in which the notch 321 is in a locking state along the first time hand direction.

In this embodiment, in order to achieve the automatic reset locking of the ratchet wheel 32 in the locked position by the pawl 33, when the ratchet wheel 32 rotates around the ratchet wheel shaft 311 in the first clock direction, the pawl 33 is pushed to rotate around the pawl shaft 312 to be separated from the ratchet wheel 32;

when the ratchet wheel 32 rotates along the first clock hand direction to enable the locking part to enter the notch 321, the pawl 33 is reset to be clamped with the ratchet wheel 32 under the elastic force action of the pawl reset spring 35.

Specifically, the locking mechanism body 3 further includes:

the lower cover plate 31 is arranged on two opposite side walls of the quick-change bracket 2 at intervals;

the ratchet shaft 311 and the pawl shaft 312 are provided on the lower cover plate 31;

the ratchet shaft 311 penetrates through a first shaft hole formed in the ratchet 32, and the ratchet 32 is rotatably connected with the lower cover plate 31; the pawl shaft 312 penetrates through a second shaft hole formed in the pawl 33, and the pawl 33 is rotatably connected with the lower cover plate 31.

In this embodiment, the ratchet shaft 311 provided on the lower cover plate 31 is used to penetrate through the first shaft hole provided on the ratchet 32, so as to realize the rotational connection between the ratchet 32 and the lower cover plate 31; a pawl shaft 312 on the lower cover plate 31 penetrates through a second shaft hole on the pawl 33, so that the pawl 33 is rotatably connected with the lower cover plate 31; when the pawl rotates relative to the lower cover plate 31, the pawl is enabled to have a locking state of being clamped with the ratchet wheel 32 and an unlocking state of being separated from the ratchet wheel 32.

Further, the locking mechanism body 3 further includes: and a ratchet resetting structure, when the pawl 33 rotates to be separated from the ratchet 32, the ratchet 32 rotates to a position where the notch 321 is in an unlocking state through the ratchet resetting structure.

Specifically, the ratchet reset structure includes: a ratchet return spring 34, a first end of the ratchet return spring 34 is fixedly connected with the lower cover plate 31, and a second end of the ratchet return spring 34 is fixedly connected with the ratchet 32.

In this embodiment, ratchet return spring 34 provides an external force to automatically return ratchet 32 to unlock; when the pawl 33 does not perform limit locking on the ratchet wheel 32, that is, when the pawl 33 is separated from the ratchet wheel 32, under the action of the pulling force of the ratchet wheel return spring 34, the ratchet wheel rotates by a certain angle along the reverse direction of the first distortion direction, so that the locking part is released from the notch 321, and automatic unlocking is completed.

Preferably, when the ratchet wheel 32 rotates to the unlocking state, the opening direction of the notch 321 is a downward inclined direction (as shown in fig. 16), so as to facilitate applying an external force for pushing the inclined surface 322 to rotate the ratchet wheel 32 when the quick-change power battery pack 1 is lifted and mounted.

Based on the above embodiment, preferably, the lower cover plate 31 is provided with a first stopper 316 and a second stopper at the locking position and the unlocking position corresponding to the ratchet 32, respectively;

in the locked state, the ratchet 32 is clamped between the first limit block 316 and the pawl 33;

in the unlocking state, the second stopper abuts against the ratchet 32.

In this embodiment, in order to limit the position of the ratchet 32 in the locked state, a first limit block 316 is disposed on the lower cover plate 31, when the ratchet 32 is in the locked state as shown in fig. 17, the first limit block 316 is engaged with a protruding structure of the ratchet 32 to prevent the ratchet 32 from continuing to rotate, and the first limit block 316 and the pawl 33 together limit the ratchet 32 in the locked state as shown in fig. 17; further, in order to make the notch 321 in an opening direction inclined downward (the unlocked state shown in fig. 16) when the ratchet 32 is in the unlocked state, so as to lock the locking portion, in this embodiment, a second stopper (not shown) is disposed on the lower cover plate 31, and the second stopper abuts against the ratchet 32, so that the ratchet 32 is kept in the unlocked state shown in fig. 16.

Further, based on the above embodiment, the pawl returning structure includes: and a first end of the pawl return spring 35 is fixedly connected with the lower cover plate 31, and a second end of the pawl return spring 35 is fixedly connected with the pawl 33.

In this embodiment, the pawl return spring 35 provides an external force for the pawl 33 to automatically lock the ratchet gear 32; when the ratchet wheel 32 is in the locked state as shown in fig. 17, under the action of the elastic force of the pawl return spring 35, the pawl 33 rotates around the pawl shaft 312 by an angle and is engaged with the ratchet wheel 33, so that the ratchet wheel 32 is locked and fixed. After the pawl 33 is pushed away from the ratchet wheel 32 to separate the pawl 33 from the ratchet wheel 32, the ratchet wheel 32 can be rotated in the direction opposite to the first clock direction to unlock. In this embodiment, the pawl return spring 35 can provide an external force for the pawl 33 to automatically lock the ratchet gear 32 in the locked state, so that the pawl 33 automatically locks and fixes the ratchet gear 32 in the locked state.

Preferably, the lower cover plate 31 is fixedly connected with a pawl limit block 313;

in the locked state, the pawl stopper 313 abuts against a side end of the pawl 33, which is far from the pawl shaft 312 and close to the ratchet 32, so as to prevent the pawl 33 from rotating.

In this embodiment, the rotation range of the pawl 33 is limited by the pawl limit stopper 313, and the pawl 33 in a natural state is in a position abutting against the pawl limit stopper 313 under the elastic force of the pawl return spring 35 (as shown in fig. 17); thus, when the ratchet wheel 32 is driven to rotate in the first clock hand direction in the process of pushing up the ratchet wheel 32 by the locking portion, the ratchet wheel 32 pushes the pawl 33 to rotate around the pawl shaft 312 when rotating, so that the pawl 33 is separated from the pawl stopper 313, and when the ratchet wheel 32 is in the locking state as shown in fig. 17, the pawl 33 automatically returns to the position abutting against the pawl stopper 313 under the action of elastic force and is clamped with the ratchet wheel 32, so that the ratchet wheel 32 is locked.

Further, in order to effectively monitor the locking or unlocking state of the ratchet 32 and ensure the locking reliability, the locking mechanism body 3 is connected with a microswitch 38; in the locked state, the ratchet 32 contacts the microswitch 38.

In an alternative embodiment, the locking mechanism body 3 further includes: a microswitch 38;

in the locked state, the ratchet 32 contacts the microswitch 38, which is closed; in the unlocked state, the ratchet 32 is disengaged from the microswitch 38 and the microswitch 38 is open.

In this embodiment, the microswitch may be a simple circuit. When the locking mechanism body 3 is in a locking state, the microswitch 38 is communicated; when the locking mechanism body 3 is in the unlocked state, the microswitch 38 is turned off. Further, the on/off state of the microswitch 38 is continuously detected by the controller, so that the locking or unlocking state of the locking mechanism body 3 is judged. Preferably, as shown in fig. 16 to 21, a microswitch 38 is fixedly connected to the lower cover plate 31; in the locked state, the ratchet 32 contacts the microswitch 38.

In an alternative embodiment, the locking mechanism body 3 further includes: a detection device for detecting the position of the ratchet 32.

When the ratchet wheel 32 is in a locked state, the ratchet wheel 32 contacts the microswitch 38, and the detection device microswitch 38 outputs a first electric signal to indicate that the ratchet wheel 32 is locked in place; when the ratchet 32 is in the unlocked state and the ratchet 32 is disengaged from the microswitch 38, the detection device microswitch 38 outputs a first two-electrical signal to indicate that the ratchet 32 is unlocked. The locking or unlocking state of the ratchet 32 can be effectively monitored through the embodiment, and the locking reliability is ensured.

Wherein, detection device can be the sensor, and its theory of operation is: when a magnetic object approaches the detection device, a Hall element on a switch detection surface of the detection device generates a Hall effect to change the state of an internal circuit of the switch, so that the on-off of the switch is controlled by the magnetic object; preferably, the current effective action distance is 5 mm. Specifically, the magnetic object may be disposed on the ratchet 32.

It should be noted that, in order to avoid the damage to the microswitch 38 caused by the ratchet 32 pushing the microswitch upward without limitation, the first limit block 316 should limit the ratchet 32 in the locked state, so that the ratchet 32 in the locked state and the microswitch 38 are in proper micro-contact positions to protect the microswitch 38.

Further, as shown in fig. 16 to 21, at least one first bolt mounting hole 315 is respectively formed at two opposite side ends of the lower cover plate 31;

the first bolt mounting hole 315 is penetrated by a bolt, and the lower cover plate 31 is connected with the quick-change bracket 2.

In this embodiment, at least one first bolt mounting hole 315 is respectively disposed at two opposite side ends of the lower cover plate 31, and the lower cover plate 31 is connected to the quick-change bracket by a bolt passing through the first bolt mounting hole 315 disposed on the lower cover plate 31.

As one implementation, as shown in fig. 18 to 21, the upper cover plate 36 is provided with an arched opening 362 with an opening facing downward;

the locking portion is disposed through the arcuate opening 362.

In this embodiment, the arched opening 362 corresponds to the notch 314 of the lower cover plate 31 for passing through the locking portion. This embodiment has effectively increased the length that opening 321 was gone into in locking portion lock, can improve the locking reliability, avoids taking off the lock.

Further, as shown in fig. 20 and 21, the arcuate opening 362 includes a first end that is distal from the opening and is proximate to the latch portion in the latched state;

the first end is connected to a damper block 37.

In this embodiment, the damping block 37 plays a role of buffering, so as to effectively prevent the impact force and the friction force of the locking part from damaging the ratchet 32 and the lower cover plate 31, and prolong the service life of the locking mechanism body 3.

It should be noted that the damper block 37 may also be mounted on the notch 314 of the lower cover plate, specifically, may be mounted on an end of the notch 314 which is far from the opening and is close to the locking portion in the locking state.

It should be noted that, in the above embodiment, the distance between the ratchet wheel 32 and the pawl 33 is relatively short, and the shock absorption block 37 is mounted on the upper cover plate 36, so that the excessive distance between the ratchet wheel 32 and the pawl 33 and the lower cover plate 31 can be avoided. The scheme can effectively shorten the distance between the quick-change power battery pack 1 and the quick-change bracket 2.

Specifically, as shown in fig. 1 to 4b, the quick-change holder 2 includes: a first plate body 21 enclosing to form an installation space; the quick-change power battery pack 1 is placed in the installation space.

In this embodiment, the first plate body 21 is fixedly connected with the vehicle body, the first plate body 21 is surrounded to form an accommodating space (installation space) for accommodating the quick-change power battery pack 1, and in addition, a plurality of locking mechanism bodies 3 are arranged on the side wall of the first plate body 21, so that the quick-change power battery pack 1 is locked on the first plate body 21 through the plurality of locking mechanism bodies 3, and the quick-change power battery pack 1 is connected with the vehicle body through the quick-change bracket 2 of the power battery pack; further, utilize adapting unit to connect a plurality of pawls 33, can realize driving quick change power battery package 1 through adapting unit and unblock simultaneously on a plurality of locking mechanism bodies 3, realize linkage unblock, improved the convenience of unblock, finally realized quick change power battery package 1 and automobile body detachable and be connected.

Specifically, the limiting assembly is movably connected with the inner side wall of the first plate 21; when the quick-change power battery pack 1 is locked on the locking mechanism body 3, the limiting assembly is abutted against the connecting part to lock the connecting part for the second time, so that the movement of the connecting part is prevented, and the movable connecting part is prevented from driving the locking mechanism body 3 to unlock. The quick-change support for quickly changing the power battery pack is simple in structure, convenient to operate and high in reliability, and when the quick-change support is used for fixing the locking quick-change power battery pack 1, the installation and disassembly processes of the quick-change power battery pack 1 can be effectively and conveniently carried out, and the replacement efficiency of the quick-change power battery pack 1 is improved.

Preferably, as shown in fig. 3 to 4b and 10, the first plate 21 is provided with a through hole at a position where the locking mechanism body 3 is mounted;

the locking mechanism body 3 penetrates through the through hole.

In this embodiment, the through hole may also be a notched groove structure in which the lower portion communicates with the outside as shown in fig. 10. Specifically, the end portions of the two sides of the lower cover plate 31 in the locking mechanism body 3 are connected with the outer side wall of the first plate body 21 through a plurality of first bolt mounting holes 315, so that the upper cover plate 36 is close to the outer side wall of the first plate body 21, and the groove bottom of the accommodating groove of the lower cover plate 31 is close to the inner side wall of the first plate body 21, so that the locking mechanism body can penetrate through the side wall of the first plate body 21. This structural design can reduce the lateral wall thickness of the quick change support 2 of movable battery package, realizes that ratchet 32, pawl 33 and lower apron 31 can more press close to quick change power battery package 1 when the quick change power battery package 1 is fixed in the locking, avoids taking more space, also avoids the gap between quick change power battery package 1 and the first body 21 too big.

Optionally, as shown in fig. 3 to 3b, flanges 22 are further disposed on the top of the two side surfaces of the first plate 21, and a plurality of second bolt mounting holes connected to the vehicle body are formed in the flanges 22. The second bolt mounting hole is penetrated through by a bolt 221, and the quick-change bracket 2 for quickly changing the power battery pack is connected with the vehicle body.

Referring to fig. 22 to 24, the quick-change power battery pack 1 includes:

the locking parts are fixed on two opposite side walls of the quick-change power battery pack 1 at intervals, and the locking parts are structurally lock catch rings 11;

the quick-change power battery pack 1 is detachably connected with the quick-change bracket 2 arranged on the vehicle body through a plurality of lock catch rings 11.

In this embodiment, through a plurality of snap rings 11 that the interval set up on the outer wall of the relative both sides wall of quick change power battery package 1 with install on the automobile body quick change support 2 cooperates, utilizes the locking mechanism assembly on quick change support 2, has realized being connected with dismantling of quick change power battery package 1 and automobile body for when quick change power battery electric quantity is not enough, quick change power battery package is quick changed, reduces the time that quick change power battery charges and consumes, thereby ensures the punctual trip of user.

It is worth to be noted that, different from the structures such as the lock shaft or the shaft lever, when the locking mechanism body 3 is small in size, the lock shaft is correspondingly thinner, the rigidity is insufficient, and the lock shaft is easy to deform or damage, and the lock catch ring structure can adapt to the locking mechanism body 3 with a small size, is not easy to damage and deform, and is beneficial to improving the connection rigidity and reliability between the quick-change power battery pack and the locking mechanism body 3.

Specifically, as shown in fig. 22 to 23, the quick-change power battery pack 1 further includes:

the locking seats 10 are arranged on two opposite side walls of the quick-change power battery pack 1 at intervals;

the lock catch ring 11 is fixedly connected with the side wall of the quick-change power battery pack 1 through the lock catch seat 10.

In this embodiment, fix snap ring 11 on the quick change power battery package 1 lateral wall through lock seat 10, on the one hand can improve snap ring 11 and quick change power battery package 1's the stability of being connected, on the other hand sets up the bolt hole on the lateral wall of lock seat 10 and quick change power battery package 1, wears to establish the bolt hole through the bolt and with lock seat 10 and quick change power battery package 1 fixed connection, can realize when snap ring 11 damages, convenient to detach changes the snap ring.

Specifically, the latch ring 11 includes a bent rod configured in a "U" or "several" configuration;

the bent rod is fixedly connected with the side wall of the quick-change power battery pack 1 at the opening side of the U-shaped or the U-shaped structure to form an annular structure. Compared with the structure of the lock shaft and the lock rod, the annular structure is favorable for improving the overall rigidity of the lock catch ring 11, and the connection stability of the quick-change power battery pack and the vehicle body is improved.

Further, a plurality of positioning blocks 12 are arranged on the outer walls of two opposite side walls of the quick-change power battery pack 1 at intervals.

In this embodiment, the positioning block 12 is used to position the quick-change power battery pack 1, so as to prevent the quick-change power battery pack 1 from shaking in the quick-change bracket 2 during the driving process of the electric vehicle, which causes collision damage, and prolong the service lives of the quick-change power battery pack and the quick-change bracket 2.

Specifically, the positioning block 12 is a cube structure;

one side of the square structure is fixedly connected with the side wall of the quick-change power battery pack 1. Preferably, an electric plug connector 13 is further arranged on the upper end face of the quick-change power battery pack 1;

the electrical plug-in connector 13 is used for electrical connection to an electric vehicle.

Specifically, as shown in fig. 24, an extended protruding structure is arranged in the middle of one end of the quick-change power battery pack 1, an electrical plug connector installation groove is formed in the upper surface of the protruding structure, and the electrical plug connector 13 is fixed in the electrical plug connector installation groove. This embodiment is through inciting somebody to action electric plug connector 13 is fixed in electric plug connector mounting groove for electric plug connector 13 forms the mounting structure of straight-up straight-down, is convenient for with the change structure adaptation of quick change power battery package, has realized after changing quick change power battery package, realizes quick the connection of quick change power battery package and electric automobile's control system.

It should be pointed out that electric connector 13 sets up on battery package upper portion, is protected inside electric automobile, avoids driving the vehicle in-process by influence such as dust, water stain, snow, has avoided the fault rate of the electric connection of trading the electric process.

The embodiment of the invention provides a locking method for a quick-change power battery pack, which is applied to the quick-change power battery installation system, and in the process of locking the quick-change power battery pack 1, the method comprises the following steps:

controlling the quick-change power battery 1 and the locking mechanism body 3 to move relatively, and pushing each locking mechanism body 3 by the locking parts on the quick-change power battery pack 1 in a one-to-one correspondence manner, so that the locking parts are locked into the locking mechanism bodies 3 at the same time to complete one-time locking operation;

It should be noted that the relative movement between the quick-change power battery 1 and the locking mechanism body 3 may be that the quick-change power battery 1 approaches the locking mechanism body 3, for example, the power battery pack 1 is installed in a lifting manner; or the locking mechanism body 3 may approach the quick-change power battery 1, for example, the electric vehicle is lifted upwards, the quick-change power battery pack 1 is not moved, and then the height of the electric vehicle is reduced, during the descending process of the electric vehicle, the locking portions correspondingly push the locking mechanism bodies one by one and lock the locking mechanism bodies into the locking mechanism bodies, so as to complete the locking operation on the power battery pack 1; or the quick-change power battery 1 and the locking mechanism body 3 can be simultaneously close to each other.

The embodiment of the invention provides an unlocking method for a quick-change power battery pack, which is applied to the quick-change power battery mounting system, and in the process of unlocking the quick-change power battery pack 1, the method comprises the following steps:

after once the unblock is accomplished, through promoting the slip subassembly slides along first direction, adapting unit drives a plurality of locking mechanism bodies 3 unblock simultaneously quick change power battery package 1.

In addition, the invention also provides an electric automobile which comprises the quick-change power battery mounting system.

In the above-mentioned scheme, a quick change power battery installing the system of door lock formula is provided, compare with the current quick change power battery quick change mechanism in market, the scheme that this embodiment provided has following advantage:

1. the battery pack has the advantages that the accommodating space of the battery pack is larger, the size in the longitudinal direction can be increased, the locking and unlocking are flexible, and the fault tolerance is higher.

2. The quick-change power battery pack is only mounted and dismounted in a rising or descending movement mode relative to the electric automobile, and the battery changing time is shortened.

3. The locking mechanism is not restricted by the shape of the battery, has small structural size and does not occupy the space of the battery box body;

4. the disassembly mode is simple and reliable, the battery pack with any shape and appearance can be conveniently popularized and applied, and the unified interface of the battery changing station is facilitated. And the unlocking and locking modes are simple and reliable.

Specifically, when the quick-change power battery pack 1 is unlocked, the secondary lock body 5 is jacked by using an unlocking device in a quick-change station, the unlocking shifting block 61 and the linear sliding block 63 are pushed to move along the sliding rail 62, the flexible shaft 4 is driven by the movement of the unlocking shifting block 61 to move along a first direction, and then the unlocking operating rods 331 on the pawls 33 are pushed, the unlocking operating rods 331 drive the pawls 33 in the locking mechanism bodies 3 to rotate around the pawl shafts 312 to an unlocking state separated from the ratchet wheels 32 under the action of thrust, the ratchet wheels 32 losing the limit of the pawls 33 rotate along the opposite direction of the first hour hand direction, the locking parts are released from the gaps 321, and linkage unlocking is realized.

When the quick-change power battery pack 1 is locked and fixed, the lock ring 11 on the quick-change power battery pack 1 pushes the inclined surface 322 of the ratchet wheel 32, so that the notch 321 on the ratchet wheel 32 rotates around the ratchet wheel 311 for a certain angle relative to the lower cover plate 31, the rotation of the ratchet wheel 32 also drives the pawl 33 to rotate around the pawl shaft 312 for a certain angle, so that the pawl 33 is separated from the pawl limiting block 313, and when each lock ring is in a locked state locked in the notch 321, under the combined action of the elastic force of the pawl return spring 35 and the elastic force of the self-restoring spring 7, the pawl 33 immediately returns to be abutted against the pawl limiting block 313, and the locked state of the pawl 33 and the ratchet wheel 32 in a clamping manner realizes the locking and fixing of the ratchet wheel 32, and the locking action of the quick-change power battery pack 1 is completed.

In conclusion, the scheme provided by the embodiment has simple locking and unlocking processes, is convenient to realize generalization, can complete locking only by pushing the quick-change power battery pack to vertically move upwards, and does not need other actions; and the state of the lock body is monitored in real time through the micro switch 38 and the sensor 65, and once the lock is unlocked, a lock falling signal is transmitted immediately, so that the reliability is ensured.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims

1. A quick-change power battery mounting system, comprising:

the quick-change power battery pack (1) is characterized in that a plurality of locking parts are arranged on the side wall of the quick-change power battery pack (1);

quick change support (2) with set up in locking mechanism assembly on quick change support (2), locking mechanism assembly includes: a plurality of locking mechanism bodies (3), a connecting member connected to the plurality of locking mechanism bodies (3); and a secondary locking mechanism;

the secondary locking mechanism comprises a sliding assembly and a limiting assembly, and the sliding assembly is fixedly connected with the connecting component; when the plurality of locking mechanism bodies (3) are in a locking state, the limiting assembly is in a secondary locking state for locking the sliding assembly; when the limiting assembly is in an unlocking state separated from the sliding assembly, under the condition that the sliding assembly is pushed to slide along the first direction, the connecting component pushes the pawl (33) of the locking mechanism body (3), the pawl (33) is separated from the ratchet wheel (32) of the locking mechanism body (3), and the ratchet wheel (32) is driven to rotate to an unlocking state separated from the locking part.

2. The quick-change power battery mounting system as recited in claim 1, wherein the slide assembly comprises: a slide rail structure and an unlocking shifting block (61);

the unlocking shifting block (61) is arranged on the sliding rail structure in a sliding manner and is fixedly connected with the connecting part;

when the secondary locking state is achieved, the limiting assembly is abutted to the unlocking shifting block (61) to prevent the unlocking shifting block (61) from sliding and unlocking along the sliding rail structure.

3. The quick-change power battery mounting system of claim 2, wherein the slide assembly further comprises:

the magnetic block is arranged on the unlocking shifting block (61);

the sensor (65) is installed on the quick-change bracket (2) and is in a position corresponding to the unlocking shifting block (61) provided with the magnetic block when the unlocking shifting block is in the secondary locking state;

wherein, in the secondary lock state, the sensor (65) outputs an electrical signal.

4. The quick-change power battery mounting system of claim 1, wherein the restraint assembly includes a reset member;

5. The quick-change power battery mounting system according to claim 1, characterized in that the coupling means comprise a plurality of flexible shafts (4);

two adjacent locking mechanism bodies (3) are connected through the flexible shaft (4).

6. The quick-change power battery mounting system of claim 1, wherein the locking mechanism assembly further comprises: a self-restoring spring (7);

the self-restoring spring (7) is in a state of pulling the connecting member in a direction opposite to the first direction.

7. The quick-change power battery mounting system as claimed in claim 1, wherein the outer edge of the ratchet wheel (32) is provided with a notch (321) matched with the locking part;

when the quick-change power battery pack (1) is lifted and mounted, the ratchet wheel (32) is pushed by the locking part to drive the ratchet wheel (32) to rotate around a ratchet wheel shaft (311), the locking mechanism body (3) enters a locking state that the locking part is locked into the notch (321), and the pawl (33) rotates around a pawl shaft (312) to be clamped with the ratchet wheel (32);

the pawls (33) in the plurality of locking mechanism bodies (3) are connected by a connecting member;

under the condition that the connecting component is pushed to move along the first direction, the pawls (33) are driven to rotate to be separated from the ratchet wheel (32), and the ratchet wheel (32) rotates around the ratchet wheel shaft (311) to be in an unlocking state of releasing the locking part from the notch (321).

8. The quick-change power battery mounting system according to claim 7, wherein the locking mechanism body (3) further comprises:

and the pawl resetting structure is used for enabling the pawl (33) to rotate to the position when the notch (321) is in a locking state along the first time direction when the ratchet wheel (32) rotates along the first time direction, and the pawl (33) rotates to the position when the ratchet wheel (32) is clamped.

9. The quick-change power battery mounting system according to claim 7, wherein the locking mechanism body (3) further comprises:

and the ratchet wheel resetting structure is used for enabling the ratchet wheel (32) to rotate to a position when the notch (321) is in an unlocking state through the ratchet wheel resetting structure when the pawl (33) rotates to be separated from the ratchet wheel (32).

10. The quick-change power battery mounting system according to claim 7, characterized in that the pawl (33) is provided with an unlocking lever (331) extending outside the locking mechanism body;

the unlocking operation rod (331) is fixedly connected with the connecting part.

11. The quick-change power battery mounting system according to claim 7, characterized in that a microswitch (38) is connected to the locking mechanism body (3);

in the locked state, the ratchet (32) contacts the microswitch (38), which is closed;

in the unlocked state, the ratchet (32) is disengaged from the microswitch (38), which is off.

12. The quick-change power battery mounting system according to claim 7, wherein the locking mechanism body (3) further comprises: detection means for detecting the position of the ratchet (32);

when the ratchet wheel (32) is in a locking state, the detection device outputs a first electric signal; when the ratchet wheel (32) is in an unlocking state, the detection device outputs a second electric signal.

13. The quick-change power battery mounting system as claimed in claim 1, wherein the locking portion is configured as a snap ring (11).

14. Quick-change power battery mounting system according to claim 1, characterized in that the quick-change bracket (2) comprises: a first plate body (21) enclosing to form an installation space;

the quick-change power battery pack (1) is placed in the installation space.

15. A locking method for a quick-change power battery pack, characterized in that a quick-change power battery mounting system according to any one of claims 1 to 14 is applied, and in the process of locking the quick-change power battery pack (1), the method comprises:

controlling the quick-change power battery pack (1) and the locking mechanism body (3) to move relatively, wherein the locking parts on the quick-change power battery pack (1) correspondingly push the locking mechanism bodies (3) one by one, so that the locking parts are locked into the locking mechanism bodies (3) simultaneously to complete one-time locking operation;

16. An unlocking method for a quick-change power battery pack, which is applied to the quick-change power battery mounting system according to any one of claims 1 to 14, and comprises the following steps in the process of unlocking the quick-change power battery pack:

after once the unblock is accomplished, through promoting the slip subassembly slides along first direction, adapting unit drives a plurality of locking mechanism bodies (3) unblock simultaneously quick change power battery package (1).

17. An electric vehicle comprising the quick-change power battery mounting system of any one of claims 1-14.