CN115817264A - Unlocking assembly and battery replacement equipment - Google Patents

Abstract

The invention discloses an unlocking assembly and battery replacing equipment, wherein the unlocking assembly comprises: the unlocking rod, the unlocking barrel and the fixing plate; the unlocking rod comprises a jacking part and a guide part which are sequentially connected along the length direction of the unlocking rod; the first end of the unlocking cylinder is provided with a first opening, and the guide part extends into the unlocking cylinder from the first opening; the second end of the unlocking cylinder is installed on the fixing plate, and in a non-unlocking state, the ratio of the sum of the length of the jacking portion, the length of the guide portion and the length of the unlocking cylinder to the length of the unlocking rod exposed out of the unlocking cylinder is larger than 1 and smaller than 5. The total length between the length of the unlocking cylinder and the length of the unlocking rod exposed out of the unlocking cylinder is kept unchanged, and the ratio of the lengths is set, so that the compression stroke of the unlocking rod in the unlocking cylinder can be increased, the abrasion of the top of the unlocking rod can be reduced, and the service life of the unlocking ejector rod is prolonged; and the fault-tolerant rate of the unlocking rod can be improved, and the power switching error redundancy is improved, so that the success rate of power switching and unlocking is improved.

Description

Unlocking assembly and battery replacement equipment

Technical Field

The invention relates to an unlocking assembly and battery replacing equipment.

Background

The conventional battery mounting methods for electric vehicles are generally classified into a fixed type and a replaceable type, wherein the fixed type battery is generally fixed on the vehicle, and the vehicle is directly used as a charging object during charging. The replaceable battery is generally movably mounted, can be taken down at any time for replacement or charging, and is mounted on the vehicle body after replacement or charging is finished.

After the battery is installed on the electric automobile, generally through locking mechanism locking on the electric automobile, avoid dropping, when the battery was changed at every turn, need carry out the unblock to locking mechanism through the unblock subassembly.

The unblock subassembly includes the unblock pole, an unblock section of thick bamboo, fixed plate, and the unblock pole is located and is stretched out and drawn back from top to bottom in the unblock section of thick bamboo, and the unblock section of thick bamboo is including connecting the stiff end on the fixed plate and keeping away from the free end of fixed plate. The existing unlocking assembly is in the unlocking process, the compression stroke of the unlocking rod in the unlocking cylinder is limited, the unlocking rod cannot be completely compressed, the unlocking rod is not buffered when unlocking occurs, the abrasion of the top of the unlocking rod is accelerated due to the fact that the unlocking rod jacks up the locking mechanism, the fault tolerance of the unlocking assembly is low, and the success rate of battery replacement unlocking is low.

Disclosure of Invention

The invention aims to overcome the defects that in the prior art, the abrasion of the top of an unlocking rod is accelerated and the success rate of battery replacement unlocking is low due to the fact that the compression stroke of the unlocking rod of an unlocking assembly in an unlocking cylinder is limited and the fault tolerance is low, and provides an unlocking assembly and battery replacement equipment.

The invention solves the technical problems through the following technical scheme:

an unlocking assembly, comprising: the unlocking rod, the unlocking barrel and the fixing plate; the unlocking rod comprises a jacking part and a guide part which are sequentially connected along the length direction of the unlocking rod; the first end of the unlocking cylinder is provided with a first opening, and the guide part extends into the unlocking cylinder from the first opening; the second end of the unlocking cylinder is mounted on the fixing plate,

in a non-unlocking state, the ratio of the sum of the length of the jacking part, the length of the guide part and the length of the unlocking cylinder to the length of the unlocking rod exposed out of the unlocking cylinder is more than 1 and less than 5.

In the scheme, compared with the prior art, the total length between the length of the unlocking cylinder and the length of the unlocking rod exposed out of the unlocking cylinder is kept unchanged, and the compression stroke of the unlocking rod in the unlocking cylinder can be increased by setting the ratio range between the sum of the length of the jacking part, the length of the guide part and the length of the unlocking cylinder and the length of the unlocking rod exposed out of the unlocking cylinder, so that the redundancy range between the maximum compression stroke of the unlocking rod in the unlocking cylinder and the required actual compression stroke of the unlocking rod in the unlocking cylinder in the unlocking process is increased, the situations that the unlocking rod has no buffer and is provided with a hard-top locking mechanism in the unlocking process can be prevented, the abrasion of the top of the unlocking rod is reduced, and the service life of the unlocking rod is prolonged; the fault-tolerant rate of the unlocking rod can be improved, the power switching error redundancy is improved, and the success rate of power switching and unlocking is further improved; and redundancy maximization is achieved under the condition of good economical efficiency.

Preferably, an unlocking cylinder avoiding surface is arranged on the outer wall of the first end of the unlocking cylinder and used for avoiding the battery pack and/or the electric vehicle.

In this scheme, because the size of battery package is indefinite, the position of battery package also has the error, set up this unblock section of thick bamboo and dodge the face and can increase the redundant scope between an unblock section of thick bamboo and battery package and/or an unblock section of thick bamboo and the electric vehicle, avoid the first end of an unblock section of thick bamboo to produce the collision with the battery package, the automobile body support on the electric vehicle, avoid haring battery package and unblock subassembly.

Preferably, the unlocking assembly further comprises an elastic component, the elastic component is arranged in the unlocking cylinder, and the guide part of the unlocking rod abuts against the elastic component.

In this scheme, through being provided with elastomeric element in an unblock section of thick bamboo, utilize elastomeric element to provide the elastic support power of unblock subassembly, the motion of unblock pole in the axis direction of being convenient for, and then work efficiency when improving the unblock subassembly unblock. Meanwhile, the elastic component is arranged in the unlocking cylinder, the structure is simple and compact, and the utilization rate of space resources is improved.

Preferably, the second end of the unlocking barrel is provided with a second opening, the fixing plate is provided with a through hole communicated with the second opening, and the elastic component can penetrate through the second opening and extend into the through hole;

and/or the elastic component is a rectangular spring.

In this scheme, can pass through the second opening of an unlocking barrel with the elastic component and extend to the through-hole of fixed plate in, adopt this structural style, can increase elastic component's length, and then increase elastic component's compression stroke for the fault-tolerance of unblock pole is higher, can further improve the success rate of trading the electric unblock.

Compare in linear spring in the past, the cross-section of rectangular spring is great, can increase the area of contact of the second end of elastomeric element and extension, reduces the effort that the unblock pole produced when rectangular spring, has improved rectangular spring's stability, improves the size of the biggest elastic support power that the unblock subassembly can provide at the unblock in-process for the unblock subassembly can carry out the unblock to the battery package of different producer production. Meanwhile, the pitch of the rectangular spring is large, and the number of coils of the rectangular spring is less than that of the coils of the linear spring under the condition of the same length, so that the compression rate of the rectangular spring is larger, the fault tolerance is higher, the rigidity of the rectangular spring is large, and the service life of the rectangular spring is long in the process that the unlocking rod moves along the axis of the unlocking rod.

Preferably, the first end of the jacking portion is a free end, and the second end of the jacking portion is connected with the first end of the guide portion;

the second end of the guide portion extends into the unlocking cylinder from the first end of the unlocking cylinder.

In the scheme, the jacking part acts on the locking mechanism to unlock; the unlocking rod and the unlocking cylinder are stably connected together through the guide part, and the unlocking rod is prevented from being separated from the unlocking cylinder in the unlocking process.

Preferably, the shape of the outer wall of the guide part is matched with the shape of the inner wall of the unlocking cylinder;

and/or the radial dimension of the jacking part is smaller than or equal to the radial dimension of the guide part.

In this scheme, the shape through the guide part of unblock pole and an unblock section of thick bamboo matches, can make the identical degree of height of unblock pole and an unblock section of thick bamboo junction like this, prevents that the unblock pole from rocking in an unblock section of thick bamboo to improve unblock assembly's overall stability.

Preferably, the unlocking rod further comprises a fixing part, the fixing part is arranged at the second end of the guide part, and the radial size of the fixing part is smaller than that of the guide part;

the fixing part is embedded in the first end of the elastic part, and the second end of the guide part abuts against the first end of the elastic part.

In this scheme, inlay the fixed part and establish in elastomeric element's first end, the second end butt of guide part in elastomeric element's first end can reduce the area of contact of unlocking lever and an unblock section of thick bamboo, and then reduces the resistance of unlocking lever compression motion in an unblock section of thick bamboo, increases the compression stroke of unlocking lever in an unblock section of thick bamboo. And can further improve the stability of being connected of the unlocking cylinder to the unlocking lever, avoid the unlocking lever to break away from the support of the elastic component simultaneously for produce the unlocking lever and can not receive the elastic force of the elastic component.

Preferably, the jacking portion is provided with an inclined guide surface and/or a top avoidance surface,

the inclined guide surface and/or the top avoiding surface are arranged at intervals along the circumferential direction of the unlocking rod.

In this scheme, the purpose that sets up the slope spigot surface is that, when the locking mechanism contact of unblock subassembly and electric automobile bottom, the slope spigot surface and the locking mechanism on correspond the position shape phase-match, play the guide effect to the unblock pole. The purpose of setting up the top and dodging the face is because the size of battery package is indefinite, the position of battery package also has the error, sets up the face of dodging that should incline and can avoid the tip of unblock pole to produce the collision with battery package, automobile body support, avoids damaging battery package and unblock subassembly.

Preferably, a guide hole is formed in the unlocking cylinder, and the guide hole extends along the axial direction of the unlocking cylinder;

the unlocking rod is provided with a limiting piece, and the limiting piece extends into the guide hole and can slide along the extension direction of the guide hole;

and/or a through hole is formed in the second end of the unlocking barrel and used for cleaning residues in the unlocking barrel.

In this scheme, through the cooperation between guiding hole and the locating part, can restrict the displacement range of unblock pole in an unblock section of thick bamboo, avoid the unblock pole to break away from in the unblock section of thick bamboo, improve the stability of knowing that a locking pole and an unblock section of thick bamboo are connected. The purpose of setting up the column hole is used for in time clearly understanding the unnecessary residue that locking lever produced in the in-process of unblock in the section of thick bamboo of unblock, avoids unnecessary residue to disturb and leads to elastomeric element's normal work, guarantees that elastomeric element is in optimum state all the time at the during operation, and then the flexibility when elastomeric element moves in the improvement knowledge lock subassembly also.

A battery swapping device comprises the unlocking assembly.

In the scheme, the unlocking assembly comprising the structure can increase the compression stroke of the unlocking rod in the unlocking cylinder by setting the ratio range between the sum of the length of the jacking part, the length of the guide part and the length of the unlocking cylinder and the length of the unlocking rod exposed out of the unlocking cylinder, so as to increase the redundancy range between the maximum compression stroke of the unlocking rod in the unlocking cylinder and the required actual compression stroke of the unlocking rod in the unlocking cylinder in the unlocking process, prevent the situation that the unlocking rod has no buffer and is hard-top locked, reduce the abrasion of the top of the unlocking rod and prolong the service life of the unlocking rod; the fault-tolerant rate of the unlocking rod can be improved, the battery replacement error redundancy is improved, and the success rate of battery replacement and unlocking is further improved; and redundancy maximization is achieved under the condition of good economical efficiency.

On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.

The positive progress effects of the invention are as follows: the unlocking assembly and the battery replacement equipment are provided with the ratios of the length of the jacking part, the length of the guide part, the sum of the lengths of the unlocking cylinders and the unlocking rod to the length of the unlocking cylinder exposed out of the unlocking cylinder, which are more than 1 and less than 5, compared with the prior art, the total length of the unlocking cylinder to the length of the unlocking rod exposed out of the unlocking cylinder is kept unchanged, and the compression stroke of the unlocking rod in the unlocking cylinder can be increased by setting the ratio range of the length of the jacking part, the length of the guide part, the sum of the lengths of the unlocking cylinders and the length of the unlocking rod exposed out of the unlocking cylinder, so that the redundancy range between the maximum compression stroke of the unlocking rod in the unlocking cylinder and the required actual compression stroke of the unlocking rod in the unlocking cylinder in the unlocking process can be prevented, the situations that the unlocking rod has no buffering and hard top locking mechanism during unlocking of the unlocking rod can be prevented, the abrasion of the top of the unlocking rod is reduced, and the service life of the unlocking rod is prolonged; the fault-tolerant rate of the unlocking rod can be improved, the power switching error redundancy is improved, and the success rate of power switching and unlocking is further improved; and redundancy maximization is achieved under the condition of good economical efficiency.

Drawings

Fig. 1 is a schematic structural diagram of a locking mechanism according to a first embodiment of the present invention.

Fig. 2 is a schematic overall structure diagram of the unlocking assembly in a non-unlocking state according to the first embodiment of the present invention.

Fig. 3 is a schematic view of another view structure of the unlocking assembly in a non-unlocking state according to the first embodiment of the present invention.

Fig. 4 is a side view of the unlocking assembly in a non-unlocking state according to the first embodiment of the invention.

Fig. 5 isbase:Sub>A sectional view taken along the linebase:Sub>A-base:Sub>A in fig. 4.

Fig. 6 is an overall structural schematic diagram of the unlocking assembly in the unlocking state according to the first embodiment of the present invention.

Fig. 7 is a side view of the unlocking assembly in the unlocked state according to the first embodiment of the present invention.

Fig. 8 is a sectional view taken in the direction B-B in fig. 7.

Fig. 9 is a schematic structural diagram of an unlocking lever according to a first embodiment of the present invention.

Fig. 10 is a schematic structural diagram of an unlocking barrel according to a first embodiment of the present invention.

Fig. 11 is another perspective structural diagram of the unlocking barrel according to the first embodiment of the present invention.

Fig. 12 is a schematic structural diagram of an elastic component according to a first embodiment of the invention.

Fig. 13 is a schematic structural diagram of a fixing plate according to a first embodiment of the invention.

Fig. 14 is a schematic structural diagram of a partial structure of a battery swapping device according to a second embodiment of the present invention.

Description of reference numerals:

unlocking assembly 100

Unlocking lever 200

Jacking part 21

First end 211 of the jacking portion

Second end 212 of the jacking portion

Inclined guide surface 213

Top escape surface 214

Guide part 22

First end 221 of the guide

Second end 222 of the guide portion

Fixed part 23

Unlocking barrel 300

First end 31 of the unlocking barrel

First opening 311

Second end 32 of the unlocking barrel

Second opening 321

Unlocking cylinder avoiding surface 33

Elastic member 34

First end 341 of elastic member

Second end 342 of the elastic member

Guide hole 35

First guide hole 351

Second pilot hole 352

Position limiter 36

Limiting hole 361

Through hole 37

Anti-slip part 38

Wear-proof piece 39

Fixing plate 400

Through hole 41

Locking mechanism 500

Lock connecting rod 51

Unlocking block 52

Groove 521

Battery swapping device 600

Base 61

Guide rail 62

Transmission 63

Drive mechanism 64

Fixing member 65

Unlocked state X

Non-unlocked state Y

Length M of unlocking rod exposed out of unlocking cylinder

Length N of the unlocking barrel

Length L of guide part

Detailed Description

The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.

Example 1

As shown in fig. 1-13, an unlocking assembly 100 is disclosed that is disposed on a battery swapping device and is used to unlock a locking mechanism on an electric vehicle to unlock a battery pack from the electric vehicle. The unlocking assembly 100 includes an unlocking lever 200 including a jacking portion 21 and a guide portion 22 connected in sequence along a length direction thereof, an unlocking barrel 300, and a fixing plate 400.

The axes of the unlocking lever 200 and the unlocking barrel 300 are coincident, so that the accuracy of aligning the unlocking assembly 100 and the locking mechanism on the electric vehicle in the corresponding position can be improved.

The first end 31 of the unlocking cylinder 300 has a first opening 311, the unlocking lever 200 is inserted into the unlocking cylinder 300, as shown in fig. 5 and 8, the guide portion 22 of the unlocking lever 200 protrudes into the unlocking cylinder 300 from the first opening 311, and the portion of the unlocking lever 200 inserted into the unlocking cylinder 300 varies according to different states of the unlocking assembly 100. The second end 32 of the unlocking barrel is mounted on a fixing plate 400, and the fixing plate 400 supports the unlocking barrel 300 and the unlocking lever 200. In the non-unlocking state Y, the unlocking rod 200, except for the connecting portion with the unlocking barrel 300, needs to be embedded into the unlocking barrel 300, and the remaining portion of the unlocking rod 200 completely protrudes out of the unlocking barrel 300, and in this state, the ratio of the sum of the length of the jack-up portion 21, the length L of the guide portion 22, and the length N of the unlocking barrel 300 to the length M of the unlocking rod 200 exposed out of the unlocking barrel 300 is greater than 1 and less than 5, so that under the condition of good economy, the redundancy maximization is realized, the fault tolerance is high, and the applicability is high.

Compared with the prior art, in a non-unlocking state, the total length between the length N of the unlocking cylinder 300 and the length M of the unlocking rod 200 exposed out of the unlocking cylinder 300 is kept unchanged, and by setting the ratio range between the sum of the length of the jacking portion 21, the length L of the guide portion 22 and the length N of the unlocking cylinder 300 and the length M of the unlocking rod exposed out of the unlocking cylinder to be greater than 1 and less than 5, the compression stroke of the unlocking rod 200 in the unlocking cylinder 300 can be increased, wherein the compression stroke of the unlocking rod 200 in the unlocking cylinder 300 is the variation of the length of the unlocking rod 200 exposed out of the unlocking cylinder 300 when the unlocking rod is switched from the non-unlocking state Y to the unlocking state X, that is, the length of the unlocking rod 200 compressed in the unlocking cylinder 300 can be increased, so as to increase the maximum compression stroke of the unlocking rod 200 in the unlocking cylinder 300 and the required actual compression stroke of the unlocking rod 200 in the unlocking cylinder 300 in the unlocking process, and to prevent the unlocking rod 200 from being in the situations of no-buffer and hard-jacking locking mechanism, reduce the wear of the top of the unlocking rod 200 and increase the service life of the unlocking rod 200; the fault-tolerant rate of the unlocking rod 200 can be improved, the power switching error redundancy is improved, and the success rate of power switching and unlocking is further improved; and redundancy maximization is achieved under the condition of good economical efficiency.

In the present embodiment, as shown in fig. 4, the connecting portion of the unlocking lever 200 and the unlocking cylinder 300 is the guide portion 22, and the portion of the unlocking lever 200 exposed to the unlocking cylinder 300 is the entire jack-up portion 21, that is, the length M of the unlocking lever 200 exposed to the unlocking cylinder 300 is the same as the length of the jack-up portion 21, that is, the ratio between the sum of the length of the jack-up portion 21, the length L of the guide portion 22, and the length N of the unlocking cylinder 300 and the length of the jack-up portion 21 is greater than 1 and less than 5. In other embodiments, the part of the lock release lever 200 exposed to the lock release cylinder 300 is the partial lift portion 21 as long as the above ratio range is satisfied.

Specifically, as shown in fig. 1, the locking mechanism 500 includes a lock link 51, an unlocking block 52 is disposed below the lock link 51, and the top end of the unlocking assembly 100 is aligned with the unlocking block 52, as shown in fig. 1, so as to guide the unlocking rod 200 into a groove 521 at the bottom of the unlocking block 52 of the locking mechanism 500. During unlocking, the unlocking rod 200 acts on the unlocking block and opens the locking connecting rod 51, when the locking connecting rod 51 is completely opened, the actual compression stroke of the unlocking rod 200 in the unlocking cylinder 300 is smaller than the maximum compression stroke of the unlocking rod 200 in the unlocking cylinder 300, and a certain redundancy range is met between the maximum compression stroke of the unlocking rod 200 in the unlocking cylinder 300 and the required actual compression stroke of the unlocking rod 200 in the unlocking cylinder 300 in the unlocking process, so that the unlocking rod 200 has buffering in the whole unlocking process of jacking up the locking connecting rod 51, the abrasion of the top of the unlocking rod 200 is reduced, and the service life of the unlocking rod 200 is prolonged; and the fault-tolerant rate of the unlocking rod 200 can be improved, the power switching error redundancy is improved, and the success rate of power switching and unlocking is further improved.

In the present embodiment, a ratio of a sum of the length of the jack portion 21, the length L of the guide portion 22, and the length N of the unlocking barrel 300 to the length M of the unlocking lever 200 exposed to the unlocking barrel 300 is greater than 1 and less than 5, and correspondingly, a redundancy (i.e., a difference) between a maximum compression stroke of the unlocking lever 200 in the unlocking barrel 300 and a required actual compression stroke of the unlocking lever 200 in the unlocking barrel 300 during unlocking is in a range of 3 to 15.

If the ratio of the sum of the length of the jacking portion 21, the length L of the guide portion 22 and the length N of the unlocking cylinder 300 to the length M of the unlocking rod 200 exposed out of the unlocking cylinder 300 is less than 1, the redundancy between the maximum compression stroke of the unlocking rod 200 in the unlocking cylinder 300 and the required actual compression stroke of the unlocking rod 200 in the unlocking cylinder 300 in the unlocking process is less than 3, so that the conditions that the unlocking rod 200 has no buffer and the hard-top locking mechanism 500 occur in the unlocking process, the abrasion of the top of the unlocking rod 200 is accelerated, the service life of the unlocking rod 200 is short, the fault tolerance rate of the unlocking rod 200 is low, and the success rate of battery replacement and unlocking is low. If the ratio of the length of the jacking portion 21 to the length L of the guide portion 22 to the length N of the unlocking cylinder 300 to the length M of the unlocking rod 200 exposed out of the unlocking cylinder 300 is greater than 5, the redundancy between the maximum compression stroke of the unlocking rod 200 in the unlocking cylinder 300 and the required actual compression stroke of the unlocking rod 200 in the unlocking cylinder 300 in the unlocking process exceeds 15, the space between the battery replacement equipment and the electric vehicle is not allowed, and the battery replacement equipment is complex in structure, high in cost and poor in economy.

As shown in fig. 10 to 11, an unlocking barrel avoiding surface 33 is provided on an outer wall of the first end 31 of the unlocking barrel 300, and the purpose of the unlocking barrel avoiding surface 33 is that, because the size of the battery pack is variable and the position of the battery pack has an error, the arrangement of the unlocking barrel avoiding surface 33 can increase the redundant range between the unlocking barrel 300 and the battery pack and/or between the unlocking barrel 300 and the electric vehicle, so as to avoid collision between the first end 31 of the unlocking barrel 300 and the battery pack and a vehicle body bracket on the electric vehicle during unlocking, and avoid damage to the battery pack and the unlocking assembly 100, that is, the unlocking barrel avoiding surface 33 is used for avoiding the battery pack and/or the electric vehicle.

Specifically, the number of the unlocking cylinder avoiding surfaces 33 is at least two, and the unlocking cylinders 300 are symmetrically arranged in the axial direction. With this configuration, the integrity of the unlocking assembly 100 and the battery pack can be further ensured.

As shown in fig. 5, 8 and 12, the unlocking assembly 100 further includes an elastic member 34, the elastic member 34 is disposed in the unlocking barrel 300, and the unlocking lever 200 abuts against the elastic member 34. By arranging the elastic member 34 in the unlocking cylinder 300 and providing the elastic supporting force of the unlocking assembly 100 by the elastic member 34, the unlocking rod 200 reciprocates along the axial direction of the unlocking cylinder 300 by the elastic supporting force provided by the elastic member 34, thereby improving the working efficiency of the unlocking assembly 100 when unlocking. Meanwhile, the elastic component 34 is arranged in the unlocking barrel 300, the structure is simple and compact, and the utilization rate of space resources is improved.

Specifically, the elastic member 34 is a rectangular spring. In this embodiment, compare in the linear spring in the past, the cross-section of rectangular spring is great, can increase the area of contact of elastic component 34 with the second end of extension, reduces the effort that unlocking lever 200 produced when being used in the rectangular spring, has improved the stability of rectangular spring, improves the size of the biggest elastic support power that unlocking subassembly 100 can provide in the unblock process for unlocking subassembly 100 can carry out the unblock to the battery package of different producers production. Meanwhile, the pitch of the rectangular spring is large, and the number of coils of the rectangular spring is less than that of coils of the linear spring under the condition of the same length, so that the compression rate of the rectangular spring is larger, the fault tolerance is higher, the rigidity of the rectangular spring is large, and the service life of the rectangular spring is long in the process that the unlocking rod 200 moves along the axis of the rectangular spring.

The compression stroke of the unlocking rod 200 in the unlocking cylinder 300 depends on the compression stroke of the elastic component 34, and the compression stroke of the elastic component 34 refers to the variation of the elastic component 34 when the unlocking assembly is switched from the non-unlocking state Y to the unlocking state X, so that the compression stroke of the unlocking rod 200 in the unlocking cylinder 300 can be increased by the rectangular spring, and the success rate of battery replacement and unlocking is increased.

As shown in fig. 10 to 11, the second end 32 of the unlocking cylinder has a second opening 321, and a through hole 41 communicating with the second opening 321 is provided in the fixing plate 400. The second end 342 of the elastic component 34 can pass through the second opening 321 and extend into the through hole 41, and with such a structural form, the length of the rectangular spring can be increased, so as to increase the compression stroke of the rectangular spring, so that the fault tolerance of the unlocking rod 200 is higher, and the success rate of battery replacement and unlocking can be further improved.

As shown in fig. 9, the first end 211 of the jack-up portion is a free end, and the first end 211 of the jack-up portion is an end close to the locking mechanism; the second end 212 of the lifting portion is connected to the first end 221 of the guiding portion, and the second end 222 of the guiding portion extends into the unlocking cylinder 300 from the first end 31 of the unlocking cylinder. The locking mechanism is unlocked through the action of the jacking part 21; the unlocking lever 200 and the unlocking cylinder 300 are stably connected together by the guide portion 22, and the unlocking lever 200 is prevented from disengaging the unlocking cylinder 300 during unlocking.

Specifically, the outer wall shape of the guide portion 22 of the unlocking rod 200 is connected with the inner wall shape of the unlocking barrel 300 in a matched manner, so that the matching degree of the joint of the unlocking rod 200 and the unlocking barrel 300 can be improved, the compression movement of the unlocking rod 200 in the unlocking barrel 300 is guided, the unlocking rod 200 is effectively prevented from shaking in the unlocking barrel 300, and the overall stability of the unlocking assembly 100 is improved.

The radial dimension of the raised portion 21 is smaller than or equal to the radial dimension of the guide portion 22. In this embodiment, the radial dimension of the jacking portion 21 is smaller than the radial dimension of the guiding portion 22, and the radial dimension of the jacking portion 21, which is required to extend between the battery pack and the vehicle body bracket, of the unlocking lever 200 is reduced to be smaller than the gap between the battery pack and the vehicle body bracket, so that the jacking portion can smoothly extend between the battery pack and the vehicle body bracket to unlock the locking mechanism, and therefore the unlocking assembly 100 can smoothly realize an unlocking function.

As shown in fig. 9, the lock release lever 200 further includes a fixing portion 23. The fixing portion 23 is disposed at the second end 222 of the guide portion 22, the radial dimension of the fixing portion 23 is smaller than the radial dimension of the guide portion 22, the fixing portion 23 is embedded in the first end 341 of the elastic member, and the second end 222 of the guide portion 22 abuts against the first end 341 of the elastic member. The arrangement can reduce the contact area of the unlocking rod 200 and the unlocking barrel 300, further reduce the resistance of the unlocking rod 200 in the unlocking barrel 300 in compression movement, and increase the compression stroke of the unlocking rod 200 in the unlocking barrel 300. The fixing portion 23 is embedded in the first end 341 of the elastic member, so that a guiding function can be performed, the connection stability of the unlocking barrel 300 to the unlocking lever 200 can be further improved, and the unlocking lever 200 is prevented from being separated from the support of the elastic member 34, so that the elastic force of the elastic member 34 cannot be applied to the unlocking lever 200. The unlocking lever 200 is guided in the unlocking cylinder 300 by the guide portion 22 and the fixing portion 23, and the stability of the movement of the unlocking lever 200 in the unlocking cylinder 300 is improved.

Further, the radial dimension of the fixing portion 23 is smaller than the radial dimension of the elastic member 34, which facilitates the fixing portion 23 to be embedded into the first end 341 of the elastic member in the axial direction of the elastic member 34, so that the connection stability of the unlocking cylinder 300 to the unlocking lever 200 can be improved, and the unlocking lever 200 is prevented from being separated from the support of the elastic member 34, so that the unlocking lever 200 cannot receive the elastic force of the elastic member 34.

As shown in fig. 1 and 9, an inclined guide surface 213 is provided on the jacking portion 21 for guiding the unlocking lever 200 into the groove 521 at the bottom of the unlocking block 52 of the locking mechanism 500 when unlocking the battery pack, and when the unlocking assembly 100 contacts with the unlocking block of the locking mechanism at the bottom of the electric vehicle, the inclined guide surface 213 matches the shape of the unlocking block on the locking mechanism to guide the unlocking lever 200. As shown in fig. 9, two inclined guide surfaces 213 are symmetrically provided on the knock-up portion 21.

Be equipped with the top on jacking portion 21 and dodge face 214, the face 214 can play and dodge with the guide effect is dodged to the top, and this top is dodged face 214 and is led when unlocking lever 200 rises on the one hand, and on the other hand, this top is dodged face 214 and can be dodged battery package or automobile body support, avoids unlocking lever 200 and battery package or automobile body support to collide and damage battery package or unlocking lever 200, and the upper end of unlocking lever 200 of being convenient for stretches into the clearance between battery package and the automobile body support. In this embodiment, as shown in fig. 9, two roof escape surfaces 214 are symmetrically provided on the jacking portion 21.

As shown in fig. 9, two inclined guide surfaces 213 and two top escape surfaces 214 are respectively symmetrically provided on the jack-up portion 21, and the inclined guide surfaces 213 and the top escape surfaces 214 are circumferentially staggered along the lock release lever 200.

In other embodiments, the jacking portion 21 may be provided with only the inclined guide surface 213 or only the roof escape surface 214, and may be adjusted according to actual conditions to achieve corresponding effects.

As shown in fig. 2 to 8 and fig. 10 to 11, the unlocking cylinder 300 is further provided with a guide hole 35, and the guide hole 35 extends through the unlocking cylinder 300 along the axial direction of the unlocking cylinder 300. Meanwhile, the lock release lever 200 is provided with a stopper 36, and the stopper 36 extends into the guide hole 35 and is slidable in the extending direction of the guide hole 35. The cooperation between the guide hole 35 and the limiting member 36 can limit the moving range of the unlocking rod 200 in the unlocking barrel 300, avoid the unlocking rod 200 from being separated from the unlocking barrel 300, and improve the stability of the connection between the unlocking rod 200 and the unlocking barrel 300.

Specifically, the guide holes 35 of the unlocking cylinder 300 include a first guide hole 351 and a second guide hole 352, and the first guide hole 351 and the second guide hole 352 extend in the axial direction of the unlocking cylinder 300 and are symmetrically disposed at both sides of the unlocking cylinder 300. Correspondingly, the unlocking lever 200 is provided with a limiting hole 361, and the limiting member 36 sequentially passes through the first guide hole 351, the limiting hole 361 and the second guide hole 352 and is disposed on the unlocking barrel 300. With this structure, the installation stability between the unlocking lever 200 and the unlocking barrel 300 can be further increased. Meanwhile, the installation and the disassembly are convenient, the operability is strong, the structure is simple, and the installation efficiency is improved.

In this embodiment, as shown in fig. 2-4, the retaining member 36 further includes a disengagement preventing member 38 and a wear preventing member 39.

The anti-release member 38 is disposed at an end of the limiting member 36 for limiting the limiting member 36 to be released from the guide hole 35, so that the structure of the lock release lever 200 can be more secure and reliable. The anti-wear piece 39 is arranged between the unlocking cylinder 300 and the anti-slip piece 38, and the anti-wear piece 39 can effectively prevent the anti-slip piece 38 from being damaged or broken due to mutual friction between the anti-slip piece 38 and the edge of the guide hole 35 on the unlocking cylinder 300, so that the service life of the unlocking assembly 100 is prolonged.

Preferably, the through hole 37 is formed in the second end 32 of the unlocking barrel, and the cylindrical hole is provided for timely clearing unnecessary residues generated in the unlocking barrel 300 during the unlocking process of the locking rod 200, so as to avoid the unnecessary residues from interfering with the normal operation of the elastic component 34, ensure that the elastic component 34 is always in an optimal state during the operation, and further improve the flexibility of the unlocking assembly 100 during the operation of the elastic component 34.

Further, in this embodiment, the number of the through holes 37 is two, and the through holes are symmetrically arranged on two sides of the unlocking barrel 300 along the axial direction of the unlocking barrel 300, so that the residues in the unlocking barrel 300 can be cleaned timely and sufficiently by the workers conveniently, the cleaning procedure is simplified, and the cleaning efficiency is improved.

When the unlocking assembly 100 is in the unlocking state from the non-unlocking state Y to the unlocking state X, namely, when the unlocking rod 200 moves in the unlocking cylinder 300 in the axial direction in the unlocking process, an elastic change section is formed on the elastic component 34, and the elastic change section can be used for judging the working capacity of the elastic component 34 and the working condition of the elastic component 34 during working by workers, so that the workers can replace and maintain the elastic component 34 in time, and the unlocking assembly 100 is ensured to be always in a normal and stable maintaining state.

In the present embodiment, the ratio of the sum of the length of the jack portion 21, the length L of the guide portion 22, and the length N of the unlocking cylinder 300 to the length M of the unlocking lever 200 exposed to the unlocking cylinder 300 is greater than 1 and less than 5, which increases the fault-tolerant ratio, improves the applicability, and maximizes the redundancy while achieving good economy. Specifically, the length M of the unlocking cylinder 300 is in the range of 49 to 37mm, the length of the guide portion 22 is 6mm at the minimum, the length of the unlocking lever 200 exposed to the unlocking cylinder 300 is in the range of 28 to 40mm, the compression rate of the elastic member 34 is 50% or less, and the compression rate is 50% or less, which satisfies the requirements of the elastic member 34 in the present embodiment, and has a long service life. The redundancy (namely, difference value) between the maximum compression stroke of the unlocking rod 200 in the unlocking barrel 300 and the required actual compression stroke of the unlocking rod 200 in the unlocking barrel 300 in the unlocking process ranges from 3 to 15, the fault tolerance rate is higher, and the applicability is high.

If the ratio of the sum of the length of the jacking portion 21, the length L of the guide portion 22 and the length N of the unlocking cylinder 300 to the length M of the unlocking rod 200 exposed out of the unlocking cylinder 300 is less than 1, the situation that the unlocking rod 200 has no buffer and is hard to jack the locking mechanism 500 occurs in the unlocking process, the abrasion of the top of the unlocking rod 200 is accelerated, the service life of the unlocking rod 200 is short, the fault tolerance rate of the unlocking rod 200 is low, and the success rate of battery replacement unlocking is low. If the ratio of the sum of the length of the jack-up portion 21, the length L of the guide portion 22, and the length N of the unlocking barrel 300 to the length M of the unlocking lever 200 exposed to the unlocking barrel 300 is greater than 5, the space between the battery replacement device and the electric vehicle is not allowed, and the battery replacement device has a complex structure, high cost, and poor economy.

In a preferred embodiment, the part of the lock release lever 200 exposed to the lock release cylinder 300 is the entire jack-up portion 21, the length of the lock release cylinder 300 is 49mm, the length of the guide portion 22 is 6mm, the length of the lock release lever 200 exposed to the lock release cylinder 300 in the non-lock release state is 28mm, and the length of the elastic member 34 is 43mm. The redundancy of the compression stroke and the elastic change section of the unlocking lever 200 relative to the compression stroke and the elastic change section in the actual unlocking process is 9mm to 10mm. The redundancy quantity in the interval is met, under the condition of good economy, the redundancy is maximized, the fault tolerance of the unlocking rod 200 is large, the reliability is high, the abrasion of the top of the unlocking rod 200 can be reduced, the service life of the unlocking rod 200 is prolonged, and the success rate of battery replacement unlocking can be greatly improved.

Example 2

As shown in fig. 14, an electricity replacing apparatus 600 is disclosed, the electricity replacing apparatus 600 employs the unlocking assembly 100 in embodiment 1, and the electricity replacing apparatus 600 further includes a base 61, a guide rail 62, a transmission mechanism 63 and a driving mechanism 64, wherein as shown in fig. 14, the fixing plate 400 is fixed on the base 61 through a fixing member 65, specifically, the base 61 is a guide block and is slidably disposed on the guide rail 62 to guide the movement of the unlocking assembly 100, the fixing member 65 is a bolt, and the fixing plate 400 is fixed on the guide block through a bolt connection.

The fixing plate 400 is provided with a through hole 41 communicating with the second opening 321 of the unlocking barrel 300, the second end 342 of the elastic member 34 can pass through the through hole 41 and abut on the upper surface of the base 61, and the elastic member 34 is a rectangular spring. By adopting the structural form, the length of the rectangular spring can be increased, and further the compression stroke of the rectangular spring is increased, so that the fault tolerance of the unlocking rod 200 is higher, and the success rate of battery replacement and unlocking can be further improved.

The fixing plate 400 is connected to and used in cooperation with the transmission mechanism 63, and the driving mechanism 64 drives the transmission mechanism 63 to drive the unlocking assembly 100 to perform position adjustment along the extending direction of the guide rail 62.

In the battery replacing device 600, by setting a ratio range between the sum of the length of the jacking portion 21, the length L of the guide portion 22, the length N of the unlocking cylinder 300 and the length M of the unlocking lever exposed out of the unlocking cylinder, the compression stroke of the unlocking lever 200 in the unlocking cylinder 300 can be increased, so that the redundancy (namely difference) range between the maximum compression stroke of the unlocking lever 200 in the unlocking cylinder 300 and the required actual compression stroke of the unlocking lever 200 in the unlocking cylinder 300 in the unlocking process is increased, the situations that the unlocking lever 200 has no buffer and hard-jacking locking mechanisms during unlocking can be prevented, the abrasion of the top of the unlocking lever 200 is reduced, and the service life of the unlocking lever 200 is prolonged; and the fault-tolerant rate of the unlocking rod 200 can be improved, the power switching error redundancy is improved, and the success rate of power switching and unlocking is further improved.

On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims (10)

1. An unlocking assembly, comprising: the unlocking rod, the unlocking barrel and the fixing plate; the unlocking rod comprises a jacking part and a guide part which are sequentially connected along the length direction of the unlocking rod; the first end of the unlocking cylinder is provided with a first opening, and the guide part extends into the unlocking cylinder from the first opening; the second end of the unlocking cylinder is arranged on the fixing plate,

in a non-unlocking state, the ratio of the sum of the length of the jacking part, the length of the guide part and the length of the unlocking cylinder to the length of the unlocking rod exposed out of the unlocking cylinder is more than 1 and less than 5.

2. The unlocking assembly of claim 1,

the outer wall of the first end of the unlocking barrel is provided with an unlocking barrel avoiding surface, and the unlocking barrel avoiding surface is used for avoiding the battery pack and/or the electric vehicle.

3. The unlocking assembly of claim 1,

the unlocking assembly further comprises an elastic part, the elastic part is arranged in the unlocking barrel, and the guide part of the unlocking rod abuts against the elastic part.

4. The unlocking assembly of claim 3,

the second end of the unlocking cylinder is provided with a second opening, the fixing plate is provided with a through hole communicated with the second opening, and the elastic part can penetrate through the second opening and extend into the through hole;

and/or the elastic component is a rectangular spring.

5. The unlocking assembly of claim 3,

the first end of the jacking part is a free end, and the second end of the jacking part is connected with the first end of the guide part;

the second end of the guide portion extends into the unlocking cylinder from the first end of the unlocking cylinder.

6. The unlocking assembly of claim 5, wherein the guide portion has an outer wall shape that matches an inner wall shape of the unlocking barrel;

and/or the radial dimension of the jacking part is smaller than or equal to the radial dimension of the guide part.

7. The unlocking assembly of claim 5,

the unlocking rod further comprises a fixing part, the fixing part is arranged at the second end of the guide part, and the radial size of the fixing part is smaller than that of the guide part;

the fixing part is embedded in the first end of the elastic part, and the second end of the guide part abuts against the first end of the elastic part.

8. The unlocking assembly of claim 5,

the jacking part is provided with an inclined guide surface and/or a top avoiding surface,

the inclined guide surface and/or the top avoiding surface are arranged at intervals along the circumferential direction of the unlocking rod.

9. The unlocking assembly of claim 1,

the unlocking cylinder is provided with a guide hole, and the guide hole extends along the axial direction of the unlocking cylinder;

the unlocking rod is provided with a limiting piece, and the limiting piece extends into the guide hole and can slide along the extension direction of the guide hole;

and/or a through hole is formed in the second end of the unlocking barrel and used for cleaning residues in the unlocking barrel.

10. An electric replacing device, characterized by comprising the unlocking assembly of any one of claims 1-9.

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