WO2019129287A1 - Unlocking mechanism for battery pack, locking device comprising same, and power changing device - Google Patents

Abstract

An unlocking mechanism (10) for a battery pack, comprising: a bridge base (100), used for contacting a lock base (21) of a locking mechanism so as to align the locking mechanism (20) relative to the unlocking mechanism (10); a swing arm (200), hinged with the bridge base (100) and used to drive a lock tongue (22) of the locking mechanism (20) to rotate so as to unlock the locking mechanism (20); and a driving module (300), connected to the swing arm (200) so as to drive the swing arm (200) to rotate relative to the bridge base (100). The present invention also relates to a locking device comprising the unlocking mechanism (10) and a power changing device. The bridge base (100), the swing arm (200) and the driving module (300) cooperate so as to be able to accurately and conveniently unlock a locking mechanism which serves as secondary lock, thereby increasing security performance. When the corresponding locking mechanism (20) is used as an alternative primary lock which is different from existing technology, the unlocking mechanism may also accurately and conveniently achieve unlocking.

Description

Unlocking mechanism for battery pack and lock device and power changing device therewith

This application claims priority from Chinese patent application CN201711482954.0 and CN201721923001.9 on December 29, 2017. This application cites the entire text of the above-mentioned Chinese patent application.

Technical field

The present invention relates to an unlocking mechanism for a battery pack and a lock device and a power changing device therewith.

Background technique

The battery pack installation methods of the existing electric vehicles are generally classified into fixed type and replaceable type, wherein the fixed type of battery pack is generally fixed on the automobile, and the vehicle is directly charged as a charging object during charging. The replaceable battery pack is generally installed in an active manner, and the battery pack can be removed at any time and replaced with a new one.

In the process of replacing a new battery pack, the locking and unlocking of the battery pack is involved. Generally, the left and right sides of the battery pack are provided with a lock shaft; the locking device is fixed on the chassis of the electric vehicle; the lock shaft cooperates with the locking device to realize the locking of the battery pack. A Chinese patent application with the publication number CN106427514A is disclosed, which discloses a "locking device". In addition, reference is made to the Chinese Patent Application Publication No. CN106494370A, which discloses an "unlocking mechanism" that can be used to unlock the "locking device".

If only the primary locking mechanism is provided, once the primary locking device fails, the locking is disabled, and the battery pack may fall, posing a great safety hazard. In order to solve this problem, a second set of locking mechanism can be set up.

If a secondary locking mechanism is provided, an additional unlocking mechanism is required, and the unlocking mechanism generally needs to include a power component and an executing component. At this time, it involves the separate control of multiple sets of unlocking mechanisms, and faces the problems of high error rate and poor stability.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and to provide an unlocking mechanism for a battery pack and a lock device and a power changing device therewith.

The present invention solves the above technical problems by the following technical solutions:

An unlocking mechanism for a battery pack, characterized in that the unlocking mechanism comprises:

a bridge seat for contacting the lock base of the lock mechanism to achieve alignment of the lock mechanism with respect to the unlock mechanism;

a swing arm, the swing arm is hinged to the bridge seat, and the swing arm is configured to rotate a lock tongue of the lock mechanism to unlock the lock mechanism;

a driving module, the driving module being coupled to the swing arm to drive the swing arm to rotate relative to the bridge seat.

Preferably, the bridge base comprises:

a bridge seat body for contacting the lock base to achieve alignment of the lock mechanism with respect to the unlock mechanism;

a swing arm bracket, a part of the swing arm bracket is fixed to the bridge seat body, and another part of the swing arm bracket is hinged with the swing arm.

Preferably, the bridge seat body comprises two wall portions, and an accommodation space defined by the two wall portions, the two wall portions being for contacting the lock base, the accommodation space for accommodating The lock base.

With the above arrangement, the positioning of the two wall portions is more accurate.

Preferably, the unlocking mechanism further includes an unlocking module, the unlocking module includes an unlocking unit, the unlocking unit is slidably disposed on the bridge seat, and the swing arm acts on the unlocking unit to make the unlocking unit relatively The unlocking unit is configured to abut the locking mechanism to drive the locking tongue to rotate to unlock the locking mechanism.

With the above arrangement, the positioning of the unlocking mechanism relative to the locking mechanism is better achieved.

Preferably, the bridge seat is provided with an unlocking hole, and the unlocking module further includes an outer sleeve, the outer sleeve is sleeved on the unlocking unit and the outer sleeve is located in the unlocking hole.

With the above arrangement, the outer sleeve functions to reduce friction.

Preferably, the unlocking module further includes an outer spring, the unlocking unit includes an unlocking head and an unlocking rod portion connected to each other, the outer spring is sleeved on the unlocking rod portion, and one end of the outer spring is abutted Connected to the unlocking head, the outer spring transmits a varying force between the bridge seat and the unlocking unit.

With the above arrangement, the outer spring acts as a buffer, and after the unlocking mechanism is unlocked, the outer spring can reset the unlocking unit.

Preferably, the unlocking unit comprises:

a tubular portion having an opening at both ends of the tubular portion;

a fixing portion fixed to an end of the tubular portion close to the swing arm;

a sliding portion, the sliding portion is slidably disposed at an end of the tubular portion away from the swing arm, and a portion of the sliding portion is located outside the tubular portion;

An inner spring is disposed in the tubular portion, and two ends of the inner spring abut against the fixing portion and the sliding portion, respectively.

With the above arrangement, in the unlocking process, once the sliding portion is caught and cannot advance, the sliding portion acts on the inner spring to protect the sliding portion from being damaged.

Preferably, the driving module comprises:

a driving unit including a driving part and a moving part, the driving part for driving the moving part to move in a straight line;

a linkage unit, a portion of the linkage unit being hinged to the moving member, and another portion of the linkage unit being hinged to the swing arm.

With the above arrangement, the driving unit drives the swing arm to rotate by the linkage unit.

Preferably, the linkage unit comprises:

a main linkage member, the main linkage member being hinged to the moving member;

a secondary linkage member, the auxiliary linkage member being hinged to the swing arm;

a cushioning member that is elastically deformable to transmit a varying force between the primary linkage member and the secondary linkage member.

With the above arrangement, the cushioning member functions as a buffer, so that the connection between the main interlocking member and the auxiliary interlocking member leaves a certain room for avoidance.

Preferably, the main linkage component comprises:

a main linkage plate, the main linkage plate being hinged to the moving member;

Two limiting plates, wherein the two limiting plates are connected to the main linkage plate;

The auxiliary linkage component includes:

The auxiliary linkage plate is hinged to the swing arm, the auxiliary linkage plate is located at one side of the main linkage plate, and the auxiliary linkage plate is disposed on the two limiting plates;

a limiting member, the limiting member is convexly disposed on the auxiliary linkage plate;

The buffering member is sleeved on the auxiliary linkage plate, and the buffering component is located between the two limiting plates, and the limiting member is worn in a direction perpendicular to a deformation direction of the buffering member. Pass the buffer member.

Preferably, the main linkage plate is provided with a limiting waist groove, and the limiting member is slidably disposed on the limiting waist groove, and the two ends of the limiting waist groove do not pass over the two limiting plates.

With the above arrangement, the movement stroke of the limit member is restricted by the limit waist groove.

Preferably, the cushioning member is a compression spring.

Preferably, the driving component includes a rotating electrical machine and a motion converting member, the motion converting member being coupled between the rotating electrical machine and the moving component to convert the rotational motion into a linear motion; or the driving component is Linear Motor.

With the above settings, the linear motion can be output at the end.

An unlocking mechanism for a battery pack, characterized in that it comprises:

a first unlocking mechanism, wherein the first unlocking mechanism is used to unlock the primary locking mechanism;

a second unlocking mechanism for unlocking the secondary locking mechanism;

a linkage mechanism, the linkage mechanism is connected to the first unlocking mechanism and the second unlocking mechanism, so that the second unlocking mechanism can realize the secondary locking mechanism under the driving of the first unlocking mechanism Unlock.

Preferably, the linkage mechanism comprises:

a first linkage unit, the first linkage unit being coupled to the first unlocking mechanism;

a second linkage unit, the second linkage unit is connected to the second unlocking mechanism;

The second linkage unit is slidably disposed on the first linkage unit.

With the above arrangement, the connection of the first linkage unit and the second linkage unit leaves a certain room for avoidance.

Preferably, the first linkage unit is provided with a retaining waist groove; the second linkage unit includes a retaining slider, and the retaining slider is slidably disposed in the retaining waist groove.

Preferably, the linkage mechanism further includes a linkage bracket for fixedly connecting with the power exchange platform, the linkage bracket is provided with a bracket waist slot, and the retaining slider is slidably disposed on the bracket waist slot .

With the above arrangement, the linkage bracket defines a sliding path of the first linkage unit and the second linkage unit.

Preferably, the second linkage unit comprises:

a main linkage member, the main linkage member being coupled to the first linkage unit by the release slider and the main linkage member being rotatable relative to the first linkage unit;

a secondary linkage member, the secondary linkage member being hinged to the second unlocking mechanism;

a cushioning member that is elastically deformable to transmit a varying force between the primary linkage member and the secondary linkage member.

With the above arrangement, the cushioning member functions as a buffer, so that the connection between the main interlocking member and the auxiliary interlocking member leaves a certain room for avoidance.

Preferably, the main linkage component comprises:

a main linkage plate, the main linkage plate is connected to the first linkage unit and the main linkage plate is rotatable relative to the first linkage unit;

Two limiting plates, wherein the two limiting plates are connected to the main linkage plate;

The auxiliary linkage component includes:

The auxiliary linkage plate is hinged to the second unlocking mechanism, the auxiliary linkage plate is located at one side of the main linkage plate, and the auxiliary linkage plate is disposed on the two limiting plates;

a limiting member, the limiting member is convexly disposed on the auxiliary linkage plate;

The buffering member is sleeved on the auxiliary linkage plate, and the buffering component is located between the two limiting plates, and the limiting member is worn in a direction perpendicular to a deformation direction of the buffering member. Pass the buffer member.

Preferably, the main linkage plate is provided with a limiting waist groove, and the limiting member is slidably disposed on the limiting waist groove, and the two ends of the limiting waist groove do not pass over the two limiting plates.

With the above arrangement, the movement stroke of the limit member is restricted by the limit waist groove.

Preferably, the cushioning member is a compression spring.

Preferably, the linkage mechanism further includes a linkage plate, and the first linkage unit is connected to the first unlocking mechanism through the linkage plate.

Preferably, the linkage mechanism includes a accommodating portion or a buffer portion, wherein the accommodating portion or the buffer portion is configured to enable the second unlocking mechanism to be correspondingly within a range when the first unlocking mechanism is moved motion.

With the above arrangement, the positioning portion or the buffer portion can be disposed between the first unlocking mechanism and the linkage mechanism, between the second unlocking mechanism and the linkage mechanism, or in the linkage mechanism, to play the role of cushioning or buffering.

Preferably, the second unlocking mechanism comprises:

a bridge seat for contacting the secondary locking mechanism to effect alignment of the secondary locking mechanism with the second unlocking mechanism;

a swing arm, a part of the swing arm is hinged with the linkage mechanism, and another part of the swing arm is hinged with the bridge seat, and the swing arm realizes unlocking of the secondary lock mechanism by rotation.

Preferably, the bridge base comprises:

a bridge seat body for contacting the secondary locking mechanism to effect alignment of the secondary locking mechanism and the second unlocking mechanism;

a swing arm bracket, a part of the swing arm bracket is fixed to the bridge seat body, and another part of the swing arm bracket is hinged with the swing arm.

Preferably, the bridge seat body comprises two wall portions, and an accommodation space defined by the two wall portions, the accommodation space for accommodating the secondary locking mechanism.

Preferably, the second unlocking mechanism further includes an unlocking unit, the unlocking unit includes an unlocking component, the unlocking component is slidably disposed on the bridge seat, and the swing arm acts on the unlocking component to enable the unlocking The component moves relative to the bridge seat, the unlocking component for abutting the secondary locking mechanism to effect unlocking of the secondary locking mechanism.

With the above arrangement, the positioning of the secondary locking mechanism relative to the second unlocking mechanism is better achieved.

Preferably, the bridge seat is provided with an unlocking hole, and the unlocking unit further includes an outer sleeve, the outer sleeve is sleeved on the unlocking component and the outer sleeve is located in the unlocking hole.

With the above arrangement, the outer sleeve functions to reduce friction.

Preferably, the unlocking unit further includes an outer spring, the unlocking component includes an unlocking head and an unlocking lever connected to each other, the outer spring is sleeved on the unlocking lever portion, and one end of the outer spring is abutted Connected to the unlocking head, the outer spring transmits a varying force between the bridge seat and the unlocking member.

With the above arrangement, the outer spring acts as a buffer, and after the second unlocking mechanism is unlocked, the outer spring can reset the unlocking member.

Preferably, the unlocking component comprises:

a tubular portion having an opening at both ends of the tubular portion;

a fixing portion fixed to an end of the tubular portion close to the swing arm;

a sliding portion, the sliding portion is slidably disposed at an end of the tubular portion away from the swing arm, and a portion of the sliding portion is located outside the tubular portion;

An inner spring is disposed in the tubular portion, and two ends of the inner spring abut against the fixing portion and the sliding portion, respectively.

With the above arrangement, in the unlocking process, once the sliding portion is caught and cannot advance, the sliding portion acts on the inner spring to protect the sliding portion from being damaged.

Preferably, the first unlocking mechanism includes an unlocking ejector and a driving unit, the unlocking ejector for abutting the primary locking mechanism to unlock the primary locking mechanism, the driving unit The unlocking ejector is driven to move.

An unlocking device for a battery pack, characterized in that it comprises:

a first unlocking mechanism, wherein the first unlocking mechanism is used to unlock the primary locking mechanism;

a second unlocking mechanism for unlocking the secondary locking mechanism;

a linkage mechanism, the linkage mechanism is connected to the first unlocking mechanism and the second unlocking mechanism, so that the second unlocking mechanism can realize the secondary locking mechanism under the driving of the first unlocking mechanism Unlock.

Preferably, the linkage mechanism comprises:

a first linkage unit, the first linkage unit being coupled to the first unlocking mechanism;

a second linkage unit, the second linkage unit is connected to the second unlocking mechanism;

The second linkage unit is slidably disposed on the first linkage unit.

With the above arrangement, the connection of the first linkage unit and the second linkage unit leaves a certain room for avoidance.

Preferably, the first linkage unit is provided with a retaining waist groove; the second linkage unit includes a retaining slider, and the retaining slider is slidably disposed in the retaining waist groove.

Preferably, the linkage mechanism further includes a linkage bracket for fixedly connecting with the power exchange platform, the linkage bracket is provided with a bracket waist slot, and the retaining slider is slidably disposed on the bracket waist slot .

With the above arrangement, the linkage bracket defines a sliding path of the first linkage unit and the second linkage unit.

Preferably, the second linkage unit comprises:

a main linkage member, the main linkage member being coupled to the first linkage unit by the release slider and the main linkage member being rotatable relative to the first linkage unit;

a secondary linkage member, the secondary linkage member being hinged to the second unlocking mechanism;

a cushioning member that is elastically deformable to transmit a varying force between the primary linkage member and the secondary linkage member.

With the above arrangement, the cushioning member functions as a buffer, so that the connection between the main interlocking member and the auxiliary interlocking member leaves a certain room for avoidance.

Preferably, the main linkage component comprises:

a main linkage plate, the main linkage plate is connected to the first linkage unit and the main linkage plate is rotatable relative to the first linkage unit;

Two limiting plates, wherein the two limiting plates are connected to the main linkage plate;

The auxiliary linkage component includes:

The auxiliary linkage plate is hinged to the second unlocking mechanism, the auxiliary linkage plate is located at one side of the main linkage plate, and the auxiliary linkage plate is disposed on the two limiting plates;

a limiting member, the limiting member is convexly disposed on the auxiliary linkage plate;

The buffering member is sleeved on the auxiliary linkage plate, and the buffering component is located between the two limiting plates, and the limiting member is worn in a direction perpendicular to a deformation direction of the buffering member. Pass the buffer member.

Preferably, the main linkage plate is provided with a limiting waist groove, and the limiting member is slidably disposed on the limiting waist groove, and the two ends of the limiting waist groove do not pass over the two limiting plates.

With the above arrangement, the movement stroke of the limit member is restricted by the limit waist groove.

Preferably, the cushioning member is a compression spring.

Preferably, the linkage mechanism further includes a linkage plate, and the first linkage unit is connected to the first unlocking mechanism through the linkage plate.

Preferably, the linkage mechanism includes a accommodating portion or a buffer portion, wherein the accommodating portion or the buffer portion is configured to enable the second unlocking mechanism to be correspondingly within a range when the first unlocking mechanism is moved motion.

With the above arrangement, the positioning portion or the buffer portion can be disposed between the first unlocking mechanism and the linkage mechanism, between the second unlocking mechanism and the linkage mechanism, or in the linkage mechanism, to play the role of cushioning or buffering.

Preferably, the second unlocking mechanism comprises:

a bridge seat for contacting the secondary locking mechanism to effect alignment of the secondary locking mechanism with the second unlocking mechanism;

a swing arm, a part of the swing arm is hinged with the linkage mechanism, and another part of the swing arm is hinged with the bridge seat, and the swing arm realizes unlocking of the secondary lock mechanism by rotation.

Preferably, the bridge base comprises:

a bridge seat body for contacting the secondary locking mechanism to effect alignment of the secondary locking mechanism and the second unlocking mechanism;

a swing arm bracket, a part of the swing arm bracket is fixed to the bridge seat body, and another part of the swing arm bracket is hinged with the swing arm.

Preferably, the bridge seat body comprises two wall portions, and an accommodation space defined by the two wall portions, the accommodation space for accommodating the secondary locking mechanism.

Preferably, the second unlocking mechanism further includes an unlocking unit, the unlocking unit includes an unlocking component, the unlocking component is slidably disposed on the bridge seat, and the swing arm acts on the unlocking component to enable the unlocking The component moves relative to the bridge seat, the unlocking component for abutting the secondary locking mechanism to effect unlocking of the secondary locking mechanism.

With the above arrangement, the positioning of the secondary locking mechanism relative to the second unlocking mechanism is better achieved.

Preferably, the bridge seat is provided with an unlocking hole, and the unlocking unit further includes an outer sleeve, the outer sleeve is sleeved on the unlocking component and the outer sleeve is located in the unlocking hole.

With the above arrangement, the outer sleeve functions to reduce friction.

Preferably, the unlocking unit further includes an outer spring, the unlocking component includes an unlocking head and an unlocking lever connected to each other, the outer spring is sleeved on the unlocking lever portion, and one end of the outer spring is abutted Connected to the unlocking head, the outer spring transmits a varying force between the bridge seat and the unlocking member.

With the above arrangement, the outer spring acts as a buffer, and after the second unlocking mechanism is unlocked, the outer spring can reset the unlocking member.

Preferably, the unlocking component comprises:

a tubular portion having an opening at both ends of the tubular portion;

a fixing portion fixed to an end of the tubular portion close to the swing arm;

a sliding portion, the sliding portion is slidably disposed at an end of the tubular portion away from the swing arm, and a portion of the sliding portion is located outside the tubular portion;

An inner spring is disposed in the tubular portion, and two ends of the inner spring abut against the fixing portion and the sliding portion, respectively.

With the above arrangement, in the unlocking process, once the sliding portion is caught and cannot advance, the sliding portion acts on the inner spring to protect the sliding portion from being damaged.

Preferably, the first unlocking mechanism includes an unlocking ejector and a driving unit, the unlocking ejector for abutting the primary locking mechanism to unlock the primary locking mechanism, the driving unit The unlocking ejector is driven to move.

A lock mechanism, characterized in that it comprises an unlocking device as described above and a primary locking mechanism and a secondary locking mechanism; the primary locking mechanism comprises a primary locking base and a primary locking tongue, The first unlocking mechanism is configured to drive the first locking bolt to rotate relative to the primary locking base to unlock the primary locking mechanism; the secondary locking mechanism includes a secondary locking base and a second locking mechanism, the second unlocking mechanism is configured to rotate the secondary locking tongue relative to the secondary locking base to unlock the secondary locking mechanism.

A lock device, characterized in that it comprises an unlocking mechanism as described above and a locking mechanism; the locking mechanism comprises a lock base and a locking tongue, the unlocking mechanism for driving the locking tongue relative to the The lock base is rotated to unlock the lock mechanism.

A lock device, characterized in that it comprises an unlocking mechanism as described above and a primary locking mechanism and a secondary locking mechanism; the primary locking mechanism comprises a primary locking base and a primary locking tongue, The first unlocking mechanism is configured to drive the first locking bolt to rotate relative to the primary locking base to unlock the primary locking mechanism; the secondary locking mechanism includes a secondary locking base and a second locking mechanism, the second unlocking mechanism is configured to rotate the secondary locking tongue relative to the secondary locking base to unlock the secondary locking mechanism.

A power changing device for replacing a battery pack on an electric vehicle, characterized in that the power changing device comprises an unlocking device as described above and a power changing platform, and the unlocking device is disposed on the power changing platform.

A power changing device for replacing a battery pack on an electric vehicle, characterized in that the power changing device comprises an unlocking mechanism and a power changing platform as described above, and the bridge seat is disposed on the power changing platform.

Based on the common knowledge in the art, the above various preferred conditions can be arbitrarily combined to obtain preferred embodiments of the present invention.

The positive effects of the present invention are:

The unlocking mechanism for the battery pack of the present invention and the lock device and the power changing device including the same, the bridge seat, the swing arm and the driving module cooperate to accurately and conveniently realize the unlocking of the locking mechanism as the secondary locking, increasing Large safety performance; of course, the unlocking mechanism disclosed by the present invention can also achieve unlocking accurately and conveniently when the corresponding locking mechanism is used as an alternative primary locking different from the prior art. The first unlocking mechanism and the second unlocking mechanism can be linked together, and only a single power source is needed, which is equivalent to a set of unlocking devices, which can complete the unlocking action of the primary locking mechanism and the secondary locking mechanism, thereby improving safety performance and reducing Control difficulty.

DRAWINGS

1 is a schematic view of an unlocking mechanism, a locking mechanism, and a power exchange platform of Embodiment 1.

Figure 2 is an enlarged schematic view of a portion A of Figure 1.

3 is a partial perspective view of the unlocking mechanism of Embodiment 1, in which the drive module is not shown.

4 is a partial cross-sectional view of the unlocking mechanism of Embodiment 1, in which the drive module is not shown.

Figure 5 is an enlarged schematic view of a portion B of Figure 4.

6 is a perspective view of the linkage unit of Embodiment 1.

7 is a schematic plan view of the linkage unit of Embodiment 1.

8 is a schematic diagram of an unlocking device, a primary locking mechanism, a secondary locking mechanism, and a power exchange platform according to Embodiment 2 of the present invention.

Figure 9 is an enlarged schematic view of a portion A of Figure 8.

Figure 10 is an enlarged schematic view of a portion B of Figure 8.

11 is a perspective view of a second unlocking mechanism according to Embodiment 2 of the present invention.

Figure 12 is a cross-sectional view showing a second unlocking mechanism according to Embodiment 2 of the present invention.

Figure 13 is an enlarged schematic view of a portion C of Figure 12.

Figure 14 is a perspective view showing a linkage mechanism of a second embodiment of the present invention.

Figure 15 is a perspective view of another embodiment of the linkage mechanism according to the second embodiment of the present invention.

Figure 16 is a perspective view of a second linkage unit according to Embodiment 2 of the present invention.

Figure 17 is a top plan view of a second linkage unit according to Embodiment 2 of the present invention.

Description of the reference signs:

Example 1

10: unlocking mechanism; 100: bridge seat; 110: bridge seat body; 111: wall portion; 1111: unlocking hole; 112: receiving space; 120: swing arm bracket; 200: swing arm; 300: drive module; 310: drive Unit; 311: driving component; 312: moving component; 320: linkage unit; 321: connecting component; 322: main linkage component; 3221: main linkage plate; 32211: limit waist slot; 3222: two limit plates; Auxiliary linkage member; 3231: auxiliary linkage plate; 3232: limit member; 324: buffer member; 400: unlocking module; 410: unlocking unit; 411: unlocking head; 412: unlocking lever portion; 413: cylindrical portion; : fixed portion; 415: sliding portion; 416: inner spring; 420: outer sleeve; 430: outer spring; 20: locking mechanism; 21: lock base; 22: lock tongue; 30: power exchange platform

Example 2

10: unlocking device; 100: first unlocking mechanism; 110: unlocking jack; 120: driving unit; 130: guiding unit; 200: second unlocking mechanism; 210: bridge seat; 211: bridge seat body; 2111: wall 2112: accommodation space; 2113: unlocking hole; 212: swing arm bracket; 220: swing arm; 230: unlocking unit; 231: unlocking member; 2311: unlocking head; 2312: unlocking lever portion; 2313: cylindrical portion; 2314: fixed portion; 2315: sliding portion; 2316: inner spring; 232: outer sleeve; 233: outer spring; 300: linkage mechanism; 310: first linkage unit; 311: let-in waist groove; 320: second linkage Unit; 321: letment slider; 322: main linkage component; 3221: main linkage plate; 32211: limit waist slot; 3222: limit plate; 323: auxiliary linkage component; 3231: auxiliary linkage plate; 3232: limit 324: buffering member; 330: linkage bracket; 331: bracket waist slot; 340: linkage linkage; 50: primary locking mechanism; 51: primary lock base; 52: primary lock tongue; 53: lock Connecting rod; 531: unlocking point; 60: secondary locking mechanism; 61: secondary locking base; 62: secondary locking tongue; 70 : quick change bracket; 80: power exchange platform

Detailed ways

Example 1

As shown in FIGS. 1-7, this embodiment discloses an unlocking mechanism 10 for a battery pack. The unlocking mechanism 10 includes a bridge base 100, a swing arm 200, and a drive module 300. The bridge seat 100 is for contacting the lock base 21 of the lock mechanism 20 to effect alignment of the lock mechanism 20 with respect to the unlock mechanism 10. The swing arm 200 is hinged with the bridge seat 100, and the swing arm 200 is used to drive the lock tongue 22 of the lock mechanism 20 to rotate to unlock the lock mechanism 20. The drive module 300 is coupled to the swing arm 200 to drive the swing arm 200 to rotate relative to the bridge mount 100.

The bridge seat 100, the swing arm 200 and the driving module 300 cooperate to accurately and conveniently unlock the locking mechanism 20 as the secondary locking, thereby increasing the safety performance; of course, the corresponding locking mechanism 20 serves as an existing The unlocking mechanism 10 can also achieve unlocking accurately and conveniently when the technically different alternative primary locking is used.

Specifically, as shown in FIG. 2-5, the bridge base 100 includes a bridge seat body 110 and a swing arm bracket 120.

The bridge seat body 110 is for contacting the lock base 21 to effect alignment of the lock mechanism 20 with respect to the unlock mechanism 10. The bridge seat body 110 includes two wall portions 111 and a receiving space 112 defined by the two wall portions 111 for contacting the lock base 21 for receiving the lock base 21. The positioning of the unlocking mechanism 10 relative to the locking mechanism 20 is preferably achieved. And the positioning of the two wall portions 111 is also more accurate. At the same time, the bridge seat 100 is provided with an unlocking hole 1111. Specifically, one wall portion 111 is provided with an unlocking hole 1111.

As shown in FIGS. 2-5, a portion of the swing arm bracket 120 is fixed to the bridge seat body 110, and another portion of the swing arm bracket 120 is hinged to the swing arm 200.

In addition, as shown in FIGS. 2-3, the unlocking mechanism 10 further includes an unlocking module 400. The unlocking module 400 includes an unlocking unit 410, an outer sleeve 420, and an outer spring 430.

As shown in FIG. 4-5, the unlocking unit 410 is slidably disposed on the bridge base 100. The swing arm 200 acts on the unlocking unit 410 to move the unlocking unit 410 relative to the bridge mount 100. The unlocking unit 410 is configured to abut the locking mechanism 20 to drive the locking tongue 22 to rotate to unlock the locking mechanism 20 . The outer sleeve 420 is sleeved on the unlocking unit 410 and the outer sleeve 420 is located in the unlocking hole 1111 to reduce the friction.

Referring specifically to FIG. 5, from the external structure, the unlocking unit 410 includes an unlocking head 411 and an unlocking lever portion 412 that are connected to each other. The outer spring 430 is sleeved on the unlocking rod portion 412 , and one end of the outer spring 430 abuts against the unlocking head portion 411 . The other end of the outer spring 430 abuts against the outer sleeve 420. The outer spring 430 transmits a varying force between the bridge mount 100 and the unlocking unit 410. The outer spring 430 acts as a buffer. After the unlocking mechanism 10 is unlocked, the outer spring 430 can reset the unlocking unit 410, specifically moving to the left to reset in FIG. As a whole, the unlocking unit 410 as a whole may be collectively referred to as an unlocking head 411. Except for the unlocking head 411, the portion of the unlocking unit 410 having a smaller outer diameter on the right side may be collectively referred to as an unlocking lever portion 412. .

Referring to another description method, still referring to FIG. 5, the unlocking unit 410 includes a cylindrical portion 413, a fixing portion 414, a sliding portion 415, and an inner spring 416. Both ends of the tubular portion 413 have openings. The fixing portion 414 is fixed to an end of the tubular portion 413 close to the swing arm 200. The sliding portion 415 is slidably disposed at one end of the tubular portion 413 away from the swing arm 200, and the partial sliding portion 415 is located outside the tubular portion 413. The inner spring 416 is disposed in the tubular portion 413, and both ends of the inner spring 416 abut against the fixing portion 414 and the sliding portion 415, respectively. During the unlocking process, once the sliding portion 415 is stuck and cannot proceed further, the sliding portion 415 acts on the inner spring 416, and the protective sliding portion 415 is not damaged.

As shown in FIG. 1-2 and FIG. 6-7, the driving module 300 includes a driving unit 310 and a linkage unit 320. The driving unit 310 drives the swing arm 200 to rotate through the linkage unit 320.

As shown in FIG. 1, the drive unit 310 includes a drive member 311 and a moving member 312. The driving member 311 is for driving the moving member 312 to move in a straight line. In the present embodiment, the driving member 311 includes a rotary electric machine (not shown) and a motion converting member. A motion converting member is coupled between the rotating electrical machine and the moving member 312 to convert the rotational motion into a linear motion. In this embodiment, the motion conversion member is a conversion structure composed of a screw rod and a slider; in other embodiments, the motion conversion member may be a conversion mechanism composed of a timing pulley and a timing belt. In an alternative embodiment, the drive member can be a linear motor that also outputs linear motion. The moving part is coupled to the motion converting member.

Referring specifically to FIG. 1, a portion of the linkage unit 320 is hinged to the moving member 312, and another portion of the linkage unit 320 is hinged to the swing arm 200. 6-7, the linkage unit 320 includes a connecting member 321, a main linkage member 322, a secondary linkage member 323, and a buffer member 324. The main linkage member 322 is hinged to the moving member 312 by the coupling member 321 . In an alternative embodiment, the connecting component may be part of the main linkage component or the connecting component may be part of the moving component.

The main linkage member 322 is hinged to the moving member 312. The main linkage member 322 includes a main linkage plate 3221 and two limiting plates 3222. Specifically, the main linkage plate 3221 is hinged to the moving member 312 through the connecting member 321 . A limiting waist groove 32211 is disposed on the main linkage plate 3221. The two ends of the limiting waist groove 32211 do not cross the two limiting plates 3222. The two limiting plates 3222 are connected to the main linkage plate 3221.

The auxiliary linkage member 323 is hinged to the swing arm 200. The auxiliary linkage member 323 includes an auxiliary linkage plate 3231 and a limiting member 3232. Specifically, the auxiliary linkage plate 3231 is hinged to the swing arm 200. The auxiliary linkage plate 3231 is located at one side of the main linkage plate 3221 and the auxiliary linkage plate 3231 is disposed through the two limiting plates 3222. The limiting member 3232 is protruded from the auxiliary linkage plate 3231. The limiting member 3232 is slidably disposed on the limiting waist groove 32211, and the movement stroke of the limiting member 3232 is restricted by the limiting waist groove 32211.

The cushioning member 324 can be elastically deformed to transmit a varying force between the main linkage member 322 and the auxiliary linkage member 323. The cushioning member 324 functions as a buffer, so that the connection between the main interlocking member 322 and the auxiliary interlocking member 323 leaves a certain room for avoidance. The buffering member 324 is sleeved on the auxiliary linkage plate 3231, and the buffering member 324 is located between the two limiting plates 3222. And the limiting member 3232 passes through the buffering member 324 in a direction perpendicular to the deformation direction of the cushioning member 324. The cushioning member 324 is a compression spring.

Further, referring again to FIG. 1, the present embodiment discloses a lock device including an unlocking mechanism 10 and a lock mechanism 20. The locking mechanism 20 includes a lock base 21 and a lock tongue 22 for driving the lock tongue 22 to rotate relative to the lock base 21 to unlock the lock mechanism 20.

Further, as shown in FIG. 1 , the embodiment discloses a power-changing device for replacing a battery pack on an electric vehicle. The power-changing device includes an unlocking mechanism 10 and a power-changing platform 30. The bridge seat 100 is disposed on the power-changing platform. 30 on. At the same time, the driving module 300 is also disposed on the power changing platform 30.

The unlocking process of the unlocking mechanism 10 will be briefly described below with reference to FIGS. 1-7:

Referring to the orientation of FIG. 1 , the power exchange platform 30 moves from bottom to top, and the two wall portions 111 of the bridge base body 110 of the bridge base 100 move up along the left and right sides of the lock base 21 to reach the position shown in FIG. 1 . status. Thereafter, the driving unit 310 acts to drive the linkage unit 320 to move, thereby driving the swing arm 200 to rotate clockwise, and the unlocking unit 410 slides to the right to act on the bolt 22 to drive the bolt 22 to rotate counterclockwise to unlock.

Example 2

As shown in FIG. 8 , the embodiment discloses an unlocking device 10 for a battery pack, which includes a first unlocking mechanism 100 , a second unlocking mechanism 200 , and a linkage mechanism 300 . The first unlocking mechanism 100 is used to unlock the primary locking mechanism 50. The second unlocking mechanism 200 is used to unlock the secondary locking mechanism 60. The linkage mechanism 300 is connected to the first unlocking mechanism 100 and the second unlocking mechanism 200, so that the second unlocking mechanism 200 can unlock the secondary locking mechanism 60 under the driving of the first unlocking mechanism 100.

The embodiment also discloses a lock mechanism including an unlocking device 10 and a primary locking mechanism 50 and a secondary locking mechanism 60. The primary locking mechanism 50 includes a primary locking base 51 and a primary locking bolt 52. The first unlocking mechanism 100 is configured to rotate the primary locking bolt 52 relative to the primary locking base 51 to implement the primary locking mechanism 50. Unlocked. The secondary locking mechanism 60 includes a secondary locking base 61 and a secondary locking bolt 62. The second unlocking mechanism 200 is configured to rotate the secondary locking bolt 62 relative to the secondary locking base 61 to implement the secondary locking mechanism 60. Unlocked.

At the same time, the embodiment also discloses a power changing device for replacing the battery pack on the electric vehicle. The power changing device includes an unlocking device 10 and a power changing platform 80, and the unlocking device 10 is disposed on the power changing platform 80.

The first unlocking mechanism 100 and the second unlocking mechanism 200 can be linked together, and only a single power source is required. Improve safety and reduce control difficulty.

FIG. 9 is an enlarged schematic view showing a portion of the first unlocking mechanism 100 and the primary locking mechanism 50 of FIG.

The first unlocking mechanism 100 includes an unlocking ejector 110 and a driving unit 120. The unlocking ejector 110 is used to abut the primary locking mechanism 50 to unlock the primary locking mechanism 50, and the driving unit 120 drives the unlocking ejector 110 to move. In this embodiment, the first unlocking mechanism 100 further includes a guiding unit 130. The guiding unit 130 includes a guide rail and a slider. The unlocking plunger 110 is fixed on the slider, and the slider is slidably disposed on the rail. The driving unit 120 includes: a motor (not Shown), a synchronous wheel (not shown), a timing belt (not shown) and an unlocking plate; the motor drives the synchronous wheel to rotate, thereby driving the timing belt; the unlocking plate is connected with the timing belt and the slider, and the timing belt is driven to unlock The plate moves to drive the slider to slide, and finally the movement of the unlocking ejector 110 is achieved.

The primary locking mechanism 50 includes a plurality of primary lock bases 51, a plurality of primary lock tongues 52 (three in the figures), and a lock link 53. The primary lock base 51 is generally fixed to the quick change bracket 70 of the electric vehicle and remains stationary during unlocking. The lock link 53 is hinged with the plurality of primary lock tongues 52. When unlocked, the primary lock tongue 52 can be rotated relative to the primary lock base 51, and the lock link 53 can be moved accordingly. The unlocking process of the first unlocking mechanism 100 is: after the unlocking ejector 110 reaches the unlocking point 531 on the lock link 53, the unlocking ejector 110 applies an upward force to the lock link 53, so that the unlocking lever moves upward to the left, one level. The bolt 52 rotates relative to the primary lock base 51 to free passage for movement of a primary lock shaft (not shown) of the battery pack.

Figure 10 shows an enlarged schematic view of the second unlocking mechanism 200 and the secondary locking mechanism 60 portion of Figure 8.

In this embodiment, the second unlocking mechanism 200 includes a bridge seat 210, a swing arm 220, and an unlocking unit 230. The bridge seat 210 is for contacting the secondary locking mechanism 60 to effect alignment of the secondary locking mechanism 60 with the second unlocking mechanism 200. A portion of the swing arm 220 is hinged to the linkage mechanism 300, and another portion of the swing arm 220 is hinged to the bridge mount 210. The swing arm 220 unlocks the secondary lock mechanism 60 by rotation. Specifically, in conjunction with FIG. 11-12, the unlocking unit 230 includes an unlocking member 231 that is slidably disposed on the bridge seat 210, and the swing arm 220 acts on the unlocking member 231 to move the unlocking member 231 relative to the bridge seat 210. The unlocking member 231 It is used to abut the secondary locking mechanism 60 to unlock the secondary locking mechanism 60. That is, the unlocking unit 230 acts on the secondary locking tongue 62 such that the secondary locking tongue 62 rotates relative to the secondary locking base 61, freeing the passage for movement of the secondary lock shaft (not shown) of the battery pack. In an alternative embodiment, the second unlocking mechanism may not include an unlocking unit, and the swing arm may directly contact the secondary locking mechanism.

As shown in FIG. 11-12, the bridge seat 210 includes a bridge seat body 211 and a swing arm bracket 212. The bridge seat body 211 is for contacting the secondary locking mechanism 60 to effect alignment of the secondary locking mechanism 60 with the second unlocking mechanism 200. A portion of the swing arm bracket 212 is fixed to the bridge seat body 211, and another portion of the swing arm bracket 212 is hinged to the swing arm 220. The bridge seat body 211 includes two wall portions 2111 and an accommodation space 2112 defined by the two wall portions 2111 for accommodating the secondary locking mechanism 60. The positioning of the secondary locking mechanism 60 relative to the second unlocking mechanism 200 is preferably achieved. The bridge body 211 further includes a bottom portion that is fixedly coupled to the power exchange platform 80.

12 and 13, the bridge seat 210 is provided with an unlocking hole 2113. The unlocking unit 230 further includes an outer sleeve 232 and an outer spring 233. The outer sleeve 232 is sleeved on the unlocking member 231 and the outer sleeve 232 is located in the unlocking hole 2113. The outer sleeve 232 serves to reduce friction, preferably a graphite bearing. The outer spring 233 is sleeved on the unlocking lever portion 2312.

Described from the external structure, the unlocking member 231 includes an unlocking head portion 2311 and an unlocking lever portion 2312 that are connected to each other. One end of the outer spring 233 abuts against the unlocking head 2311, and the other end of the outer spring 233 abuts against the outer sleeve 232. The outer spring 233 transmits a varying force between the bridge seat 210 and the unlocking member 231. The outer spring 233 functions as a buffer. During the unlocking process of the second unlocking mechanism 200, the unlocking member 231 moves to the right. After the unlocking is completed, the outer spring 233 can move the unlocking member 231 to the left to be reset. When the unlocking member 231 is viewed as a whole, a block having a larger left outer diameter may be collectively referred to as an unlocking head 2311. Except for the unlocking head 2311, a portion having a smaller outer diameter of the unlocking member 231 may be collectively referred to as an unlocking lever portion 2312. .

In another method, the unlocking member 231 includes a cylindrical portion 2313, a fixing portion 2314, a sliding portion 2315, and an inner spring 2316. Both ends of the tubular portion 2313 have openings. The fixing portion 2314 is fixed to one end of the tubular portion 2313 close to the swing arm 220. The sliding portion 2315 is slidably provided at one end of the tubular portion 2313 away from the swing arm 220, and the partial sliding portion 2315 is located outside the tubular portion 2313. The inner spring 2316 is disposed in the tubular portion 2313, and both ends of the inner spring 2316 abut against the fixed portion 2314 and the sliding portion 2315, respectively. During the unlocking process, once the sliding portion 2315 is stuck and cannot proceed further, the sliding portion 2315 acts on the inner spring 2316, and the protective sliding portion 2315 is not damaged.

As shown in FIG. 14-17, the linkage mechanism 300 includes a first linkage unit 310, a second linkage unit 320, a linkage bracket 330, and a linkage plate 340. The first linkage unit 310 is connected to the first unlocking mechanism 100. In fact, the first linkage unit 310 is connected to the first unlocking mechanism 100 through the linkage plate 340. The second linkage unit 320 is connected to the second unlocking mechanism 200. The second linkage unit 320 is slidably disposed on the first linkage unit 310. The linkage bracket 330 is used for fixed connection with the power exchange platform 80, and the linkage bracket 330 is provided with a bracket waist groove 331. Specifically, the first linkage unit 310 is provided with a yielding waist groove 311. The second linkage unit 320 includes a position slider 321 , and the position slider 321 is slidably disposed in the position waist groove 311 . At the same time, the position slider 321 is slidably disposed on the bracket waist groove 331. The linkage bracket 330 provides a power fulcrum for the first linkage unit 310 and the second linkage unit 320, and defines a sliding path of the first linkage unit 310 and the second linkage unit 320. The linkage plate 340 is sleeved on the unlocking ejector 110, and the linkage splicing plate 340 is fixedly linked with the slider of the guiding unit of the first unlocking mechanism 100 by a fastener.

In addition to the position slider 321 , the second linkage unit 320 further includes a main linkage member 322 , a secondary linkage member 323 , and a buffer member 324 . The main linkage member 322 is coupled to the first linkage unit 310 by the let-off slider 321 and the main linkage member 322 is rotatable relative to the first linkage unit 310. The auxiliary linkage member 323 is hinged to the second unlocking mechanism 200. The cushioning member 324 can be elastically deformed to transmit a varying force between the main linkage member 322 and the auxiliary linkage member 323.

Specifically, the main linkage component 322 includes a main linkage plate 3221 and two limiting plates 3222. The main linkage plate 3221 is connected to the first linkage unit 310 and the main linkage plate 3221 is rotatable relative to the first linkage unit 310. The two limiting plates 3222 are connected to the main linkage plate 3221. A limiting waist groove 32211 is disposed on the main linkage plate 3221, and the two ends of the limiting waist groove 32211 do not cross the two limiting plates 3222. The auxiliary linkage member 323 includes an auxiliary linkage plate 3231 and a limiting member 3232. The auxiliary linkage plate 3231 is hinged with the second unlocking mechanism 200, specifically hinged with the swing arm 220. The auxiliary linkage plate 3231 is located at one side of the main linkage plate 3221 and the auxiliary linkage plate 3231 is disposed through the two limiting plates 3222. The limiting member 3232 is protruded from the auxiliary linkage plate 3231. The limiting member 3232 is slidably disposed on the limiting waist groove 32211. The cushioning member 324 is a compression spring. The buffering member 324 is sleeved on the auxiliary linkage plate 3231, and the buffering member 324 is located between the two limiting plates 3222. The stopper 3232 passes through the cushioning member 324 in a direction perpendicular to the deformation direction of the cushioning member 324. The movement stroke of the stopper 3232 is restricted by the limit waist groove 32211.

The linkage mechanism 300 preferably includes a seating portion or a cushioning portion for enabling the second unlocking mechanism 200 to move within a range as the first unlocking mechanism 100 moves. In this embodiment, the yielding waist groove 311 of the first linkage unit 310 belongs to the yielding portion; the buffering member 324 of the second linkage unit 320 belongs to the buffering portion; they serve to give way or buffer. In other embodiments, the seating portion or the cushioning portion may be disposed at other positions, such as between the first unlocking mechanism and the linkage mechanism, between the second unlocking mechanism and the linkage mechanism, and the like.

Hereinafter, the unlocking process of the unlocking device 10 will be briefly described with reference to the accompanying drawings:

From the initial position shown in FIG. 8, the unlocking ejector 110 (including the spring) is moved to the left, and the unlocking ejector 110 is in contact with the lower projection of the lock link 53, so that the unlocking ejector 110 is retracted downward due to At this time, the primary locking shaft of the battery pack is tightly engaged with the primary locking bolt 52, and the force for unlocking the plunger 110 is not enough to lift the locking link 53, so that the unlocking plunger 110 moves to the unlocking point 531 and the locking link 53 In this process, the linkage plate 340 and the first linkage unit 310 both move to the left, and the position waist groove 311 slides relative to the position slider 321 to allow the position slider 321 to start moving.

Thereafter, the corresponding mechanism on the power exchange platform 80 acts on the battery pack, so that the primary locking bolt 52 is no longer tightly engaged with the primary locking shaft. At this time, the force of the unlocking plunger 110 can cause the locking link 53 to move upward and leftward. The first locking bolt 52 rotates to realize the first-level unlocking, and the unlocking plunger 110 also has a leftward follower, and the following distance is about 20 mm; in this process, the linkage connecting plate 340 and the first linkage unit 310 are both left. Movement, at the same time, because the end of the positional waist groove 311 is in contact with the position slider 321 , the second linkage unit 320 is also moved to the left, so that the swing arm 220 rotates, the unlocking member 231 slides, and the secondary locking tongue 62 rotates. Second level unlock.

In the above, the primary locking mechanism 50 and the secondary locking mechanism 60 can be unlocked simultaneously.

While the invention has been described with respect to the preferred embodiments of the embodiments of the embodiments of the invention modify. Accordingly, the scope of the invention is defined by the appended claims.

Claims (19)

1. An unlocking mechanism for a battery pack, characterized in that the unlocking mechanism comprises:

   a bridge seat for contacting the lock base of the lock mechanism to achieve alignment of the lock mechanism with respect to the unlock mechanism;

   a swing arm, the swing arm is hinged to the bridge seat, and the swing arm is configured to rotate a lock tongue of the lock mechanism to unlock the lock mechanism;

   a driving module, the driving module being coupled to the swing arm to drive the swing arm to rotate relative to the bridge seat.
2. The unlocking mechanism for a battery pack according to claim 1, wherein the bridge seat comprises:

   a bridge seat body for contacting the lock base to achieve alignment of the lock mechanism with respect to the unlock mechanism;

   a swing arm bracket, a part of the swing arm bracket is fixed to the bridge seat body, and another part of the swing arm bracket is hinged with the swing arm;

   Preferably, the bridge body includes two wall portions, and an accommodation space defined by the two wall portions, the two wall portions being for contacting the lock base, the accommodation space for receiving The lock base.
3. The unlocking mechanism for a battery pack according to claim 1, wherein the unlocking mechanism further comprises an unlocking module, the unlocking module includes an unlocking unit, and the unlocking unit is slidably disposed on the bridge seat, a swing arm acts on the unlocking unit to move the unlocking unit relative to the bridge seat, the unlocking unit is configured to abut the locking mechanism to drive the lock tongue to rotate to implement the locking mechanism Unlocked

   Preferably, the unlocking mechanism is provided with an unlocking hole, the unlocking module further includes an outer sleeve, the outer sleeve is sleeved on the unlocking unit and the outer sleeve is located in the unlocking hole;

   The unlocking mechanism and/or the unlocking module further includes an outer spring, the unlocking unit includes an unlocking head and an unlocking lever portion connected to each other, the outer spring is sleeved on the unlocking lever portion, and the outer spring is One end abuts the unlocking head, and the outer spring transmits a varying force between the bridge seat and the unlocking unit;

   The unlocking mechanism and/or the unlocking unit includes:

   a tubular portion having an opening at both ends of the tubular portion;

   a fixing portion fixed to an end of the tubular portion close to the swing arm;

   a sliding portion, the sliding portion is slidably disposed at an end of the tubular portion away from the swing arm, and a portion of the sliding portion is located outside the tubular portion;

   An inner spring is disposed in the tubular portion, and two ends of the inner spring abut against the fixing portion and the sliding portion, respectively.
4. The unlocking mechanism for a battery pack according to any one of claims 1 to 3, wherein the driving module comprises:

   a driving unit including a driving part and a moving part, the driving part for driving the moving part to move in a straight line;

   a linkage unit, a part of the linkage unit is hinged with the moving component, and another part of the linkage unit is hinged with the swing arm;

   The unlocking mechanism preferably, the linkage unit comprises:

   a main linkage member, the main linkage member being hinged to the moving member;

   a secondary linkage member, the auxiliary linkage member being hinged to the swing arm;

   a cushioning member that is elastically deformable to transmit a varying force between the primary linkage member and the secondary linkage member.

   The unlocking mechanism preferably

   The main linkage component includes:

   a main linkage plate, the main linkage plate being hinged to the moving member;

   Two limiting plates, wherein the two limiting plates are connected to the main linkage plate;

   The auxiliary linkage component includes:

   The auxiliary linkage plate is hinged to the swing arm, the auxiliary linkage plate is located at one side of the main linkage plate, and the auxiliary linkage plate is disposed on the two limiting plates;

   a limiting member, the limiting member is convexly disposed on the auxiliary linkage plate;

   The buffering member is sleeved on the auxiliary linkage plate, and the buffering component is located between the two limiting plates, and the limiting member is worn in a direction perpendicular to a deformation direction of the buffering member. Passing through the buffer member;

   Preferably, the main linkage plate is provided with a limiting waist groove, the limiting member is slidably disposed on the limiting waist groove, and the two ends of the limiting waist groove do not pass over the two limiting plates .
5. The unlocking mechanism for a battery pack according to claim 4, wherein the cushioning member is a compression spring.
6. The unlocking mechanism for a battery pack according to claim 4 or 5, wherein said driving member comprises a rotating electrical machine and a motion converting member, said motion converting member being coupled to said rotating electrical machine and said moving member To convert the rotary motion into a linear motion; or the drive member is a linear motor.
7. An unlocking mechanism for a battery pack, characterized in that it comprises:

   a first unlocking mechanism, wherein the first unlocking mechanism is used to unlock the primary locking mechanism;

   a second unlocking mechanism for unlocking the secondary locking mechanism;

   a linkage mechanism, the linkage mechanism is connected to the first unlocking mechanism and the second unlocking mechanism, so that the second unlocking mechanism can realize the secondary locking mechanism under the driving of the first unlocking mechanism Unlock.
8. The unlocking mechanism according to claim 7, wherein the linkage mechanism comprises:

   a first linkage unit, the first linkage unit being coupled to the first unlocking mechanism;

   a second linkage unit, the second linkage unit is connected to the second unlocking mechanism;

   The second linkage unit is slidably disposed on the first linkage unit;

   Preferably, the first linkage unit is provided with a retaining waist groove; the second linkage unit includes a retaining slider, and the retaining slider is slidably disposed in the retaining waist groove;

   Preferably, the linkage mechanism further includes a linkage bracket, the linkage bracket is configured to be fixedly connected to the power conversion platform, the linkage bracket is provided with a bracket waist slot, and the release slider is slidably disposed in the bracket waist slot;

   And/or, the second linkage unit includes:

   a main linkage member, the main linkage member being coupled to the first linkage unit by the release slider and the main linkage member being rotatable relative to the first linkage unit;

   a secondary linkage member, the secondary linkage member being hinged to the second unlocking mechanism;

   a cushioning member that is elastically deformable to transmit a varying force between the primary linkage member and the secondary linkage member.
9. The unlocking mechanism of claim 8 wherein:

   The main linkage component includes:

   a main linkage plate, the main linkage plate is connected to the first linkage unit and the main linkage plate is rotatable relative to the first linkage unit;

   Two limiting plates, wherein the two limiting plates are connected to the main linkage plate;

   The auxiliary linkage component includes:

   The auxiliary linkage plate is hinged to the second unlocking mechanism, the auxiliary linkage plate is located at one side of the main linkage plate, and the auxiliary linkage plate is disposed on the two limiting plates;

   a limiting member, the limiting member is convexly disposed on the auxiliary linkage plate;

   The buffering member is sleeved on the auxiliary linkage plate, and the buffering component is located between the two limiting plates, and the limiting member is worn in a direction perpendicular to a deformation direction of the buffering member. Passing through the buffer member;

   Preferably, the main linkage plate is provided with a limiting waist groove, and the limiting member is slidably disposed on the limiting waist groove, and the two ends of the limiting waist groove do not pass over the two limiting plates.
10. The unlocking mechanism of claim 8 wherein said cushioning member is a compression spring.
11. The unlocking mechanism according to at least one of claims 7 to 10, wherein the linkage mechanism further comprises a linkage plate, and the first linkage unit is connected to the first unlocking mechanism by the linkage plate ;

    And/or, the linkage mechanism includes a accommodating portion or a buffer portion, wherein the accommodating portion or the buffer portion is configured to enable the second unlocking mechanism to be correspondingly within a range when the first unlocking mechanism is moved motion;
12. The unlocking mechanism according to at least one of claims 7 to 10, wherein the second unlocking mechanism comprises:

    a bridge seat for contacting the secondary locking mechanism to effect alignment of the secondary locking mechanism with the second unlocking mechanism;

    a swing arm, a part of the swing arm is hinged with the linkage mechanism, and another part of the swing arm is hinged with the bridge seat, and the swing arm realizes unlocking of the secondary locking mechanism by rotation;

    Preferably, the bridge base comprises:

    a bridge seat body for contacting the secondary locking mechanism to effect alignment of the secondary locking mechanism and the second unlocking mechanism;

    a swing arm bracket, a part of the swing arm bracket is fixed to the bridge seat body, and another part of the swing arm bracket is hinged with the swing arm;

    Preferably, the bridge seat body comprises two wall portions, and an accommodation space defined by the two wall portions, the accommodation space for accommodating the secondary locking mechanism.
13. The unlocking mechanism according to claim 12, wherein the second unlocking mechanism further comprises an unlocking unit, the unlocking unit includes an unlocking component, the unlocking component is slidably disposed on the bridge seat, and the swing arm functions The unlocking member is configured to move the unlocking member relative to the bridge seat, the unlocking member for abutting the secondary locking mechanism to achieve unlocking of the secondary locking mechanism;

    Preferably, the bridge seat is provided with an unlocking hole, the unlocking unit further includes an outer sleeve, the outer sleeve is sleeved on the unlocking component and the outer sleeve is located in the unlocking hole;
14. The unlocking mechanism according to claim 13, wherein the unlocking unit further comprises an outer spring, the unlocking member includes an unlocking head and an unlocking lever connected to each other, and the outer spring is sleeved on the unlocking lever And an end of the outer spring abuts the unlocking head, the outer spring transmitting a varying force between the bridge seat and the unlocking member;

    And/or, the unlocking component includes:

    a tubular portion having an opening at both ends of the tubular portion;

    a fixing portion fixed to an end of the tubular portion close to the swing arm;

    a sliding portion, the sliding portion is slidably disposed at an end of the tubular portion away from the swing arm, and a portion of the sliding portion is located outside the tubular portion;

    An inner spring is disposed in the tubular portion, and two ends of the inner spring abut against the fixing portion and the sliding portion, respectively.
15. The unlocking mechanism according to at least one of claims 7-14, wherein the first unlocking mechanism comprises an unlocking ejector and a driving unit, the unlocking ejector for abutting the primary locking mechanism In order to achieve unlocking of the primary locking mechanism, the driving unit drives the unlocking plunger to move.
16. A lock device, comprising the unlocking mechanism according to any one of claims 1 to 6 and a lock mechanism; the lock mechanism includes a lock base and a lock tongue, and the unlocking mechanism is used to drive The bolt rotates relative to the lock base to effect unlocking of the lock mechanism.
17. A lock device comprising the unlocking mechanism according to any one of claims 7 to 15 and a primary locking mechanism and a secondary locking mechanism; the primary locking mechanism comprising a primary locking base And a first locking mechanism, the first unlocking mechanism is configured to rotate the first locking bolt relative to the primary locking base to unlock the primary locking mechanism; the secondary locking The mechanism includes a secondary lock base and a secondary lock tongue, and the second unlocking mechanism is configured to rotate the secondary lock tongue relative to the secondary lock base to unlock the secondary lock mechanism.
18. A power-changing device for replacing a battery pack on an electric vehicle, characterized in that the power-changing device comprises the unlocking mechanism according to any one of claims 1-6 and a power-changing platform, the bridge seat On the power exchange platform.
19. A power-changing device for replacing a battery pack on an electric vehicle, characterized in that the power-changing device comprises the unlocking mechanism and the power-changing platform according to any one of claims 7-15, wherein the unlocking mechanism is provided On the power exchange platform.

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