A locking device for battery replacement and a vehicle using the same

Abstract

The present application provides a locking device for battery replacement and a vehicle using the same, the locking device comprising a first lock body, a second lock body and a locking mechanism; the locking mechanism comprising a driving rod, an ejection steel column and two locking steel columns; the second lock body is provided with a locking cavity matching the locking mechanism, the ejection steel column and the two locking steel columns are both provided in the locking cavity; the locking cavity is provided with a first opening and a second opening opposite to the first opening; the second lock body can extend into the first lock body, the driving rod can extend into the locking cavity to control the position of the ejection steel column; the driving rod controls the position of the ejection steel column so that the ejection steel column respectively ejects the two locking steel columns out of the first opening and the second opening and engages with the inner wall of the first lock body to achieve locking; or the driving part controls the position of the ejection steel column so that the two locking steel columns remain in the second lock body to achieve unlocking. The locking device only needs a small torque to achieve locking, which improves the durability of the lock body and reduces the failure rate.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicles, and in particular to a locking device for battery replacement and a vehicle using the same. Background Art

[0002] The power supply methods of electric vehicle power batteries are generally divided into two methods: plug-in charging with the vehicle and replacing the battery. The plug-in charging method has two modes: slow charging and fast charging. The plug-in charging method has the following defects: 1. The initial investment cost of the battery is relatively large, which to a certain extent hinders the popularization of electric vehicles; 2. The charging time is too long, at least 2 to 4 hours. Compared with refueling of ordinary cars, the time spent on replenishing energy for electric vehicles is too long, which is very inconvenient and far from meeting people's needs. The fast charging mode will cause greater damage to the battery, resulting in a shortened battery life.

[0003] The use of battery replacement can effectively avoid the problems of plug-in charging. The key to achieving fast battery replacement of electric vehicle power batteries lies in the design of the battery replacement lock mechanism. The main function of the battery replacement lock body is to keep the body and the battery pack in a firmly connected state when the battery is not replaced; when the battery is replaced, the body and the battery pack are quickly connected and separated.

[0004] Furthermore, the locking mechanism in the prior art has problems such as poor positioning of the battery and the vehicle during the battery replacement process, inability to fully restrain, poor durability, large installation torque, and low structural strength. Summary of the invention

[0005] In order to solve the above technical problems, the present application discloses, on one hand, a locking device for battery replacement, comprising a first lock body, a second lock body and a locking mechanism;

[0006] The locking mechanism comprises a driving rod, an ejection steel column and two locking steel columns;

[0007] The second lock body is provided with a locking cavity matching the locking mechanism, and the ejection steel column and the two locking steel columns are both arranged in the locking cavity;

[0008] The locking cavity is provided with a first opening and a second opening opposite to the first opening;

[0009] The second lock body can extend into the first lock body, and the driving rod can extend into the locking cavity to control the position of the ejection steel column;

[0010] The driving rod controls the position of the ejection steel column so that the ejection steel column respectively ejects the two locking steel columns out of the first opening and the second opening and engages with the inner wall of the first lock body to achieve locking; or the driving part controls the position of the ejection steel column so that the two locking steel columns remain in the second lock body to achieve unlocking.

[0011] Furthermore, one end of the driving rod is arranged outside the locking cavity, and the other end of the driving rod extends into the locking cavity and is connected to the ejection steel column; the side surfaces of the ejection steel column are tangent to the side surfaces of the two locking steel columns respectively in the locked state.

[0012] Furthermore, the locking cavity is provided with a space for the longitudinal movement of the ejection steel column and a space for the lateral movement of the two locking steel columns.

[0013] Furthermore, the locking cavity is provided with a third opening, and the driving rod extends into the locking cavity through the third opening.

[0014] Furthermore, a first connecting portion is provided in the locking cavity, and the driving rod is connected to the locking cavity through the first connecting portion and moves relative to the locking cavity.

[0015] Furthermore, the driving rod is provided with an external thread, and the first connecting portion is an internal thread matching the external thread.

[0016] Furthermore, the first lock body is provided with an opening and an inner cavity, and the second lock body extends into the inner cavity through the opening.

[0017] Furthermore, the second lock body includes a limiting portion and a clamping portion, the clamping portion extends into the inner cavity through the opening, and the limiting portion is connected to the opening end of the first inner cavity.

[0018] Furthermore, the second lock body is provided with a guide portion, and the guide portion is formed by the outer wall of the clamping portion gradually shrinking inwards.

[0019] On the other hand, the present application provides a vehicle, comprising the above-mentioned locking device for battery replacement.

[0020] By adopting the above technical solution, the present application has the following beneficial effects:

[0021] The locking device for battery replacement provided by the present application uses a driving rod to drive the ejection steel column to drive the two locking steel columns to move between the unlocking position and the locking position to achieve the locking and unlocking of the locking device. The locking device only requires a small torque to achieve locking, which improves the durability of the lock body and reduces the failure rate. The locking device provided in the embodiment of the present application has a compact structure, which can meet the needs of lateral and Z-direction installation, has little impact on the vehicle and battery, and has strong compatibility. In addition, the locking device of the present application is provided with a guide portion on the second lock body to absorb deviations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A schematic diagram of a locking state of a locking device for battery replacement according to an embodiment of the present application;

[0024] Figure 2 This is a schematic diagram of the unlocked state of a locking device used for battery replacement according to an embodiment of the present application.

[0025] The following is a supplementary description of the attached drawings:

[0026] 1-first lock body; 2-second lock body; 21-limiting portion; 22-clamping portion; 221-guide portion; 31-driving rod; 32-ejecting steel column; 33-locking steel column; 4-first opening; 5-second opening. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] The term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present application. In the description of the embodiments of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may include one or more of the features explicitly or implicitly. Moreover, the terms "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here.

[0029] See also Figure 1 Combined with Figure 2 , Figure 1 and Figure 2 They are schematic diagrams of the locked state and unlocked state of a locking device for battery replacement according to an embodiment of the present application, wherein the locking device comprises a first lock body 1, a second lock body 2 and a locking mechanism; the first lock body 1 is provided with an opening and an inner cavity, and the second lock body 2 extends into the inner cavity through the opening.

[0030] The locking mechanism includes a driving rod 31, an ejection steel column 32 and two locking steel columns 33;

[0031] The second lock body 2 is provided with a locking cavity matching the locking mechanism, and the ejection steel column 32 and the two locking steel columns 33 are both arranged in the locking cavity;

[0032] The locking cavity is provided with a first opening 4 and a second opening 5 opposite to the first opening 4;

[0033] The second lock body 2 can extend into the first lock body 1, and the driving rod 31 can extend into the locking cavity to control the position of the ejecting steel column 32; one end of the driving rod 31 is arranged outside the locking cavity, and the other end of the driving rod 31 extends into the locking cavity and is connected to the ejecting steel column 32;

[0034] The driving rod 31 controls the position of the ejection steel column 32 so that the ejection steel column 32 pushes the two locking steel columns 33 out of the first opening 4 and the second opening 5 respectively and engages with the inner wall of the first lock body 1 to achieve locking; or the driving part controls the position of the ejection steel column 32 so that the two locking steel columns 33 remain in the second lock body 2 to achieve unlocking.

[0035] When locking is required, the driving rod 31 is controlled to move upward, and the driving rod 31 also moves upward against the ejection steel column 32, and the ejection steel column 32 moves toward both sides against the two locking steel columns 33, until partial areas of the two locking steel columns 33 move out of the first opening 4 and the second opening 5 respectively and engage or abut against the inner wall of the first lock body 1 to achieve locking. The side surfaces of the ejection steel column 32 are tangent to the side surfaces of the two locking steel columns 33 in the locked state. Linear contact is adopted between the locking steel column 33 and the ejection steel column 32, which greatly reduces the stress concentration problem between the contact points of the locking steel column 33 and the ejection steel column 32. In the embodiment of the present application, the position where the locking steel column 33 is engaged on the first lock body 1 is provided with an anti-skid portion, and the anti-skid portion can increase the friction between the first lock body 1 and the locking steel column 33; the anti-skid portion can be formed by providing a plurality of strip-shaped protrusions on the position where the locking steel column 33 is engaged on the first lock body 1, or by providing a plurality of strip-shaped depressions on the position where the locking steel column 33 is engaged on the first lock body 1, or by providing a plane with a relatively large roughness on the position where the locking steel column 33 is engaged on the first lock body 1. After locking, the friction between the first lock body 1 and the locking steel column 33 is used to achieve locking, thereby achieving full restraint and fixation of the battery and the vehicle, avoiding the battery from shaking during vehicle driving, and improving the safety of the electric vehicle.

[0036] When unlocking is required, the driving rod 31 is controlled to move downward, and the ejection steel column 32 also moves downward along with the driving rod 31 , the ejection steel column 32 is separated from the two locking steel columns 33 , and the two locking steel columns 33 return to the second lock body 2 .

[0037] The locking device for battery replacement provided in the present application adopts a driving rod 31 to drive the ejection steel column 32 to drive the two locking steel columns 33 to move between the unlocking position and the locking position to realize the locking and unlocking of the locking device. The locking device only requires a small torque to achieve locking, thereby improving the durability of the lock body and reducing the failure rate.

[0038] In the embodiment of the present application, a space for the longitudinal movement of the ejection steel column 32 and a space for the lateral movement of the two locking steel columns 33 are provided in the locking cavity.

[0039] In the embodiment of the present application, the locking cavity is provided with a third opening, and the driving rod 31 extends into the locking cavity through the third opening.

[0040] In the embodiment of the present application, a first connection portion is provided in the locking cavity, and the driving rod 31 is connected to the locking cavity through the first connection portion and moves relative to the locking cavity. The driving rod 31 may be a screw, and the driving rod 31 is provided with an external thread, and the first connection portion is an internal thread matching the external thread.

[0041] In the embodiment of the present application, the second lock body 2 includes a limiting portion 21 and a clamping portion 22, the clamping portion 22 extends into the inner cavity through the opening, and the limiting portion 21 is connected to the opening end of the first inner cavity.

[0042] In the embodiment of the present application, the second lock body 2 is provided with a guide portion 221, and the guide portion 221 is formed by the outer wall of the clamping portion 22 gradually shrinking inward. The guide portion 221 can be as follows Figure 1 As shown, the bottom of the clamping part 22 is cut inward from the outer wall to form a triangular prism in the form of an inclined surface, or it can be set as a tapered arc surface. This design solves the problem in the prior art that there is a certain position difference between the battery and the vehicle during the battery replacement process, resulting in the battery being unable to be installed normally. A guide part 221 is designed at the front end of the lock body to absorb the deviation.

[0043] The locking device provided in the embodiment of the present application has a compact structure, can meet the requirements of lateral and Z-direction installation, has little impact on the vehicle and battery, and has strong compatibility.

[0044] On the other hand, the present application provides a vehicle, comprising the above-mentioned locking device for battery replacement.

[0045] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A locking device for battery replacement, characterized in that: It comprises a first lock body (1), a second lock body (2) and a locking mechanism; The locking mechanism comprises a driving rod (31), an ejection steel column (32) and two locking steel columns (33); The second lock body is provided with a locking cavity matched with the locking mechanism, and the ejection steel column (32) and the two locking steel columns (33) are both arranged in the locking cavity; the side surfaces of the ejection steel column (32) are respectively tangent to the side surfaces of the two locking steel columns (33) in the locked state, and the two locking steel columns (33) and the ejection steel column (32) are matched in line contact; The locking cavity is provided with a first opening (4) and a second opening (5) opposite to the first opening (4); The second lock body (2) can extend into the first lock body (1), and the driving rod (31) can extend into the locking cavity to control the position of the ejection steel column (32); The driving rod (31) controls the position of the ejection steel column (32) so that the ejection steel column (32) pushes the two locking steel columns (33) out of the first opening (4) and the second opening (5) respectively and engages with the inner wall of the first lock body (1) to achieve locking; or the driving rod (31) controls the position of the ejection steel column (32) so that the two locking steel columns (33) are kept in the second lock body (2) to achieve unlocking; an anti-slip portion is provided on the first lock body (1) at a position engaged with the locking steel columns (33).

2. The locking device for battery replacement according to claim 1, characterized in that: One end of the driving rod (31) is arranged outside the locking cavity, and the other end of the driving rod (31) extends into the locking cavity and is connected to the ejection steel column (32).

3. The locking device for battery replacement according to claim 2, characterized in that: The locking cavity is provided with a space for the longitudinal movement of the ejection steel column (32) and a space for the lateral movement of the two locking steel columns (33).

4. The locking device for battery replacement according to claim 1, characterized in that: The locking cavity is provided with a third opening, and the driving rod (31) extends into the locking cavity through the third opening.

5. The locking device for battery replacement according to claim 4, characterized in that: A first connecting portion is provided in the locking cavity, and the driving rod (31) is connected to the locking cavity via the first connecting portion and moves relative to the locking cavity.

6. The locking device for battery replacement according to claim 5, characterized in that: The driving rod (31) is provided with an external thread, and the first connecting portion is an internal thread matching the external thread.

7. The locking device for battery replacement according to claim 1, characterized in that: The first lock body (1) is provided with an opening and an inner cavity, and the second lock body (2) extends into the inner cavity through the opening.

8. The locking device for battery replacement according to claim 7, characterized in that: The second lock body (2) comprises a limiting portion (21) and a clamping portion (22), wherein the clamping portion (22) extends into the inner cavity through the opening, and the limiting portion (21) is connected to the opening end of the inner cavity.

9. The locking device for battery replacement according to claim 8, characterized in that: The second lock body (2) is provided with a guide portion (221), and the guide portion is formed by the outer wall of the clamping portion (22) gradually shrinking inwards.

10. A vehicle, characterized in that: It comprises a locking device for battery replacement as described in any one of claims 1 to 9.

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