Bottom support with lock and battery system

Abstract

The utility model relates to the technical field of battery replacement, in particular to a bottom support with a lock and a battery system. The bottom support with the lock comprises a bottom frame assembly and a locking assembly. The bottom frame assembly comprises a bottom frame unit, and the bottom frame unit is arranged to be of an annular frame structure. The locking assembly comprises a rotating unit, and the rotating unit comprises a first rotating shaft, a second rotating shaft and a connecting module. One end of the connecting module is connected with the first rotating shaft, and the other end of the connecting module is connected with the second rotating shaft; the first rotating shaft is rotationally connected with the bottom frame unit. The bottom support has a locking state and an unlocking state. The unlocking state includes that the projection contour of the rotating unit in the first direction is contained on one side face of the bottom frame unit, and the locking state includes that the projection contour of the second rotating shaft in the first direction is outside one side face of the bottom frame unit. The first direction is the axis direction of the first rotating shaft. The battery system comprises the bottom support with the lock, so that the problem that risks exist in the battery replacing process is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of battery replacement, in particular to a bottom support with lock and battery system. BACKGROUND

[0002] In the field of vehicle battery replacement, the battery box in the prior art is connected with the bottom support and arranged on the vehicle, and the battery box and the bottom support need to be unlocked before battery replacement. The patent document with the publication number EP3543078B1 provides a locking device, which includes a lock seat for providing a locked point, the lock seat includes a lock body, the surface of the lock body is provided with a recessed lock slot facing the inside of the lock body, the inside of the lock body is provided with a lock tongue slot and a lock tongue movably installed in the lock tongue slot, and the lock tongue slot is communicated with the lock slot; the lock connecting rod is movably connected with the lock seat through the lock tongue, including a rod, the rod drives the lock tongue to move in the lock under the action of external force; the lock shaft includes a shaft seat and a shaft rod, the shaft rod is vertically arranged on the surface of the shaft seat, and the shaft rod is used for inserting into the lock slot of the lock seat for locking. The device can fix the battery on the electric vehicle, simultaneously insert the multiple lock shafts distributed on the side of the battery into the multiple lock seats of the electric vehicle, and lock the lock seats of the electric vehicle.

[0003] After the battery box and the bottom support are unlocked, the battery box can be grabbed and installed through the hoisting assembly. However, the prior art has certain problems. Before the battery replacement process is started, if professional personnel do not comprehensively and carefully check various preparation work before battery replacement, problems are easily caused. For example, the hoisting state of the battery box is very important, if it is not confirmed whether the battery box is hoisted stably, shaking and falling may occur in the hoisting process, directly leading to failure of battery replacement. At the same time, if damage problems existing in the battery box cannot be found in time, the battery replacement cannot be completed, and the battery replacement equipment may be damaged during continuous battery replacement operation. UTILITY MODEL CONTENTS

[0004] To solve the problems existing in the battery replacement process, the utility model provides a bottom support with lock and battery system.

[0005] In a first aspect, the utility model provides a bottom support with lock, which comprises:

[0006] A bottom frame assembly, which comprises a bottom frame unit; the bottom frame unit is arranged in a ring-shaped frame structure;

[0007] A locking assembly, which comprises a rotating unit; the rotating unit comprises a first rotating shaft, a second rotating shaft and a connecting module; one end of the connecting module is connected with the first rotating shaft, and the other end is connected with the second rotating shaft; the first rotating shaft and the second rotating shaft extend in the same direction; the first rotating shaft is rotationally connected with the bottom frame unit;

[0008] The bottom support includes a locked state and an unlocked state; wherein the unlocked state includes the rotating unit being projected in a first direction and contained in a side of the bottom frame unit; the locked state includes the second rotating shaft being projected in the first direction and outside the side of the bottom frame unit; the first direction is the axis direction of the first rotating shaft.

[0009] In some embodiments, the bottom frame unit includes a bottom frame body, a first positioning hole and a second positioning hole; the first positioning hole and the second positioning hole are arranged outside the bottom frame body; the unlocked state includes the first rotating shaft being inserted into the first positioning hole and the second rotating shaft being inserted into the second positioning hole; the locked state includes the first rotating shaft being inserted into the first positioning hole.

[0010] In some embodiments, the locking assembly further includes a lock tongue unit; the lock tongue unit includes a tongue body, a tongue hole and a latch; one end of the lock tongue unit is connected with the bottom frame body and the other end extends away from the bottom frame body; the tongue hole penetrates the tongue body; the connecting module includes a connecting body, a first limiting groove and a limiting hole; the first limiting groove penetrates the connecting body; the locked state includes the tongue body penetrating the first limiting groove, the first limiting groove being located between the side wall of the bottom frame unit and the tongue hole, the latch penetrating the tongue hole and the limiting hole, and the latch limiting the movement of the locking assembly.

[0011] In some embodiments, the rotating unit further includes a limiting unit; the limiting unit includes a limiting body and a second limiting groove; the limiting body is connected with the connecting body; the second limiting groove penetrates the limiting body; the unlocked state includes the tongue body penetrating the second limiting groove and the latch limiting the movement of the locking assembly.

[0012] In some embodiments, the length of the first rotating shaft is greater than the length of the second rotating shaft.

[0013] In some embodiments, the bottom frame assembly includes a guide unit; one end of the guide unit is connected with the bottom frame unit and the other end extends away from the bottom frame unit; the guide unit includes a first guide part and a second guide part; the extension length of the second guide part is less than the extension length of the first guide part; the projection area of the second guide part in the extension direction of the guide unit is less than the projection area of the first guide part in the extension direction of the guide unit.

[0014] In some embodiments, the guide unit further includes a presser; the presser is connected with the first guide part.

[0015] In some embodiments, the bottom frame unit further comprises a first electrical connection unit; the first electrical connection unit is connected with the bottom frame assembly.

[0016] In the second aspect, the utility model provides a kind of battery system, the battery system includes the bottom support of any described with lock in the first aspect, and the battery system further includes battery box;The battery box includes battery frame unit, battery unit, second electrical connection unit;The battery frame unit includes battery frame body and third positioning hole;The battery unit is connected with the battery frame body;Second electrical connection unit is connected with the battery frame body;Second electrical connection unit and the battery unit are electrically connected;The third positioning hole is arranged on the battery frame body;In the locking state, the second rotating shaft is inserted into third positioning hole to limit the movement of locking assembly.

[0017] In some embodiments, the bottom frame assembly includes a guide unit; one end of the guide unit is connected with the bottom frame unit, and the other end extends away from the bottom frame unit;The guide unit includes a first guide portion and a second guide portion;The extension length of the second guide portion is less than the extension length of the first guide portion;The projection area of the second guide portion in the extension direction of the guide unit is less than the projection area of the first guide portion in the extension direction of the guide unit;

[0018] The guide unit further includes a presser;The presser is connected with the first guide portion;

[0019] The locking state includes that the battery frame body at least partially and the presser abut, at least partially and the bottom frame unit abut, the projection of the third positioning hole along its extension direction and the projection of the presser along the extension direction of the third positioning hole coincide.

[0020] To solve the problem of risk in battery replacement process, the utility model has the following advantages:

[0021] The bottom frame unit is arranged in a ring type frame structure, and forms a locking assembly with the rotating unit including the first rotating shaft, the second rotating shaft and the connecting module, to realize mechanical conversion of the bottom support between the locking state and the unlocking state.When in the locking state, the projection profile of the second rotating shaft along the axis direction of the first rotating shaft exceeds the side surface of the bottom frame unit, forming a physical barrier to the battery box;When in the unlocking state, the rotating unit is completely accommodated in the projection range of the side surface of the bottom frame unit, and the spatial interference is removed.The structure needs to be manually operated by the operator during state conversion, and forcibly requires manual intervention in the unlocking process, thereby effectively avoiding the risks of hoisting deviation, equipment collision and battery falling caused by false connection of the lock, adsorption failure or damage of the box body not being discovered in time. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 An unlocked state structure diagram of the bottom support with lock of an embodiment is shown;

[0023] Figure 2 An unlocked state structure diagram of the bottom support with lock of an embodiment is shown; Figure 1 An enlarged view of the unlocked state of the bottom support with lock shown in FIG. 1 1 is shown;

[0024] Figure 3 An unlocked state structure diagram of the bottom support with lock of an embodiment is shown;

[0025] Figure 4 An unlocked state structure diagram of the bottom support with lock of an embodiment is shown; Figure 1 A partial diagram of the locking assembly of the bottom support with lock shown in FIG. 1 1 is shown;

[0026] Figure 5 An unlocked state structure diagram of the bottom support with lock of an embodiment is shown;

[0027] Figure 6 An unlocked state structure diagram of the bottom support with lock of an embodiment is shown; Figure 5 An enlarged view of the unlocked state of the bottom support with lock shown in FIG. 1 1 is shown.

[0028] Reference signs: 01 bottom frame assembly; 1 1 bottom frame unit; 1 1 1 bottom frame body; 1 12 first positioning hole; 1 13 second positioning hole; 12 guide unit; 121 first guide portion; 122 second guide portion; 123 presser; 13 first electrical connection unit; 02 locking assembly; 21 lock tongue unit; 21 1 tongue body; 212 tongue hole; 213 bolt; 22 rotation unit; 221 first rotation shaft; 222 second rotation shaft; 223 connection module; 2231 connection body; 2232 first limiting groove; 2233 limiting hole; 224 limiting unit; 2241 limiting body; 2242 second limiting groove; 03 battery box; 31 battery frame unit; 31 1 battery frame body; 312 third positioning hole. DETAILED DESCRIPTION

[0029] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be appreciated that these embodiments are discussed in order to enable those with ordinary skill in the art to better understand and thus practice the present disclosure and are not intended to represent any limitations of the scope of the present disclosure.

[0030] As used herein, the term "includes" and its variants are to be read as open-ended terms that mean "including, but not limited to." The term "based on" is to be construed as "based at least in part on." The terms "one embodiment" and "an embodiment" are to be read as "at least one embodiment." The term "another embodiment" is to be read as "at least one other embodiment." The terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," "longitudinal," and similar terms are used for orientation or positional relationship based on the orientation or position as shown in the drawings. These terms are used merely for the purpose of description and are not meant to limit the indicated device, element, or component to a particular orientation or configuration, unless otherwise specified. Additionally, these terms are used in conjunction with the terms "abutting," "adjoining," "attached," "connected," "engaging," "interfacing," and similar terms to describe a relationship between devices, elements, or components, unless otherwise specified. These terms are used in their broadest context, and are meant to encompass the structure, function, or connection between two devices, elements, or components, whether directly connected, indirectly connected through one or more intermediate devices, elements, or components, or in communication through the components of a system. The specific meaning to be given these terms in the present application can be apparent from the specific context in which they are used. Additionally, the terms "first," "second," and the like are used merely to identify one of a number of different elements, and are not meant to limit the scope of the application to a particular embodiment, unless otherwise specified. The term "plurality" means two or more, unless otherwise specified.

[0031] In the current battery replacement operation process, if the staff lacks detailed inspection of the preparation work before battery replacement, a series of serious problems will be caused. For example, if the battery box 03 is not hoisted stably before battery replacement, its center of gravity will be unstable, and it is very likely to deviate, shake or even fall during battery replacement, thereby causing the battery replacement to fail to be completed according to the predetermined process, i.e., battery replacement failure. In addition, when the battery box 03 is damaged, such as cracks in the box body or loose key connection parts, it may not be able to withstand normal operating stress during battery replacement, which will not only cause battery replacement failure, but also cause further damage to the damaged parts during operation, causing bumps and impacts to the battery replacement equipment, greatly affecting the normal service life and stability of the equipment. Therefore, the omission of the preparation work before battery replacement is an important reason for battery replacement failure and equipment damage.

[0032] In the present embodiment, a bottom support with a lock is provided, asFigure 1 As shown, the bottom support with lock can include a bottom frame assembly 01 and a locking assembly 02. The bottom frame assembly 01 includes a bottom frame unit 11, which can be arranged in a ring-shaped frame structure, and the bottom frame assembly 01 can be connected to the battery box 03 through the frame structure thereof.

[0033] The locking assembly 02 can include a rotating unit 22. The rotating unit 22 can include a first rotating shaft 221, a second rotating shaft 222, and a connecting module 223. One end of the connecting module 223 can be connected to the first rotating shaft 221, and the other end can be connected to the second rotating shaft 222. The first rotating shaft 221 and the second rotating shaft 222 can extend in the same direction. The first rotating shaft 221 can be rotationally connected to the bottom frame unit 11, so as to fix the locking assembly 02 on the bottom frame unit 11.

[0034] The bottom support can include a locked state and an unlocked state. In the unlocked state, the rotating unit 22 can be projected in a first direction to be contained in one side of the bottom frame unit 11, so that the locking assembly 02 does not interfere with any structure other than the bottom support, and does not hinder the unlocking of the battery box 03 and the bottom support; in the locked state, the second rotating shaft 222 can be projected in the first direction to be outside one side of the bottom frame unit 11, so that the locking assembly 02 can interfere with the battery box 03 and hinder the movement of the battery box 03 away from the bottom support. The first direction can be the axis direction of the first rotating shaft 221.

[0035] The ring-shaped frame structure provides stable support, and the rotating unit 22 forms a mechanical linkage mechanism through the connection of the first rotating shaft 221 and the connecting module 223, so that the rotation of the first rotating shaft 221 causes the connecting module 223 to rotate. In the locked state, the second rotating shaft 222 and the part of the connecting module 223 connected thereto will form a physical barrier outside the bottom frame unit 11, preventing the bottom frame unit 11 and the battery box 03 from being separated, so as to forcibly require manual unlocking operation to remove the interference and ensure that manual intervention process must be performed before battery replacement. The structure realizes the locking function through the position switching of the second rotating shaft 222, and when in the locked state, a large resistance is applied to the lifting process, forcing the operator to manually control the locking assembly 02 to the unlocked state, and in this process, the state inspection of the battery box 03 is completed synchronously, thereby avoiding the risk of equipment damage caused by lifting before inspection.

[0036] In the present embodiment, as shown in Figure 3As shown, the bottom frame unit 11 can include a bottom frame body 111, a first positioning hole 112, and a second positioning hole 113. The first positioning hole 112 and the second positioning hole 113 can be arranged outside the bottom frame body 111. The unlocked state can include the first rotating shaft 221 inserted into the first positioning hole 112, and the second rotating shaft 222 inserted into the second positioning hole 113. The hole diameters of the first positioning hole 112 and the second positioning hole 113 can restrict the displacement range of the rotating unit 22 in the unlocked state, and ensure that the locking assembly 02 does not interfere with the lifting process. The locked state can include the first rotating shaft 221 inserted into the first positioning hole 112 to maintain the rotating fulcrum, and the second rotating shaft 222 and part of the connecting module 223 can rotate around the first rotating shaft 221 to the outside of the bottom frame unit 11 to form a physical barrier, preventing the bottom frame unit 11 and the battery box 03 from being separated. The cooperation of the first positioning hole 112, the second positioning hole 113, the first rotating shaft 221, and the second rotating shaft 222 can prevent the locking assembly 02 from being accidentally deflected, and ensure that the position in the unlocked state is fixed.

[0037] In this embodiment, as shown in Figure 2 The locking assembly 02 can also include a lock tongue unit 21. The lock tongue unit 21 can include a tongue body 211, a tongue hole 212, and a bolt 213. One end of the lock tongue unit 21 can be connected to the bottom frame body 111, and the other end can extend away from the bottom frame body 111. The tongue hole 212 penetrates the tongue body 211. The connecting module 223 can include a connecting body 2231, a first limiting groove 2232, and a limiting hole 2233. The first limiting groove 2232 can penetrate the connecting body 2231. As shown in Figure 6 and Figure 3 The locked state can include the tongue body 211 penetrating the first limiting groove 2232, the first limiting groove 2232 being located between the side wall of the bottom frame unit 11 and the tongue hole 212, and the bolt 213 penetrating the tongue hole 212 and the limiting hole 2233. The bolt 213 can restrict the movement of the locking assembly 02. The cooperation of the tongue body 211 and the first limiting groove 2232 can limit the locking assembly 02 in a plane perpendicular to the extension direction of the first limiting groove 2232, and the bolt 213 penetrating the tongue hole 212 and the limiting hole 2233 at the same time can realize limiting in the extension direction of the first limiting groove 2232, thereby fixing the position of the locking assembly 02 in the locked state, preventing the rotating unit 22 from being displaced due to external force, and ensuring that the locked state is maintained stable.

[0038] In this embodiment, as shown in Figure 4 The rotating unit 22 also includes a limiting unit 224. The limiting unit 224 can include a limiting body 2241 and a second limiting groove 2242. The limiting body 2241 can be connected to the connecting body 2231, and the second limiting groove 2242 can penetrate the limiting body 2241. As shown in Figure 1As shown, the unlocked state can include the tongue body 211 penetrating through the second limiting groove 2242, and the latch 213 can limit the movement of the locking assembly 02. Through the cooperation of the second limiting groove 2242 and the tongue body 211, an auxiliary limiting structure is formed in the unlocked state, and in combination with the locking mode of the latch 213 penetrating through the tongue hole 212 and the limiting hole 2233, the secondary fixation of the unlocked state is realized, avoiding the free swing of the locking assembly 02 in the non-working state.

[0039] In the embodiment, as shown in the figure, Figure 4 The length of the first rotating shaft 221 can be greater than the length of the second rotating shaft 222. Through the length design of the first rotating shaft 221, a part of the shaft section is retained in the first positioning hole 112 during state conversion, forming continuous rotating shaft support, avoiding positioning failure caused by complete disengagement, while allowing the second rotating shaft 222 to displace circumferentially, reducing the axial stroke requirement of the unlocking operation.

[0040] In the embodiment, as shown in the figure, Figure 1 The bottom frame assembly 01 includes a guide unit 12. One end of the guide unit 12 can be connected with the bottom frame unit 11, and the other end can extend away from the bottom frame unit 11. The guide unit 12 can include a first guide part 121 and a second guide part 122, and the extension length of the second guide part 122 can be less than that of the first guide part 121. The projection area of the second guide part 122 in the extension direction of the guide unit 12 can be less than that of the first guide part 121 in the extension direction of the guide unit 12. When performing the first level guiding, the position deviation between the battery box 03 and the bottom support is large, and the force borne by the first guide part 121 is also large; while performing the second level guiding, the position deviation between the battery box 03 and the bottom support is small, and the force borne by the second guide part 122 is also small, so the second guide part 122 can be designed to be smaller to save cost. Through the stepped guide part design, the first guide part 121 provides coarse positioning guidance, and the second guide part 122 realizes precise positioning, reducing the lateral offset amount of the battery box 03 during installation, and ensuring the docking accuracy of the battery box 03 and the bottom support.

[0041] In the embodiment, as shown in the figure, Figure 1 The guide unit 12 further includes a presser 123, which can be connected with the first guide part 121. Through the presser 123, a pressing force can be applied to make the battery box 03 frame tightly fit with the bottom frame unit 11, eliminate the assembly gap, enhance the connection rigidity, and prevent relative displacement caused by vibration during hoisting.

[0042] In the embodiment, as shown in the figure, Figure 1As shown, the bottom frame unit 11 can further include a first electrical connection unit 13, which can be connected with the bottom frame unit 11. The electrical connection unit establishes the electrical path between the bottom support and the battery box 03, and simultaneously completes mechanical fixation and circuit conduction in the locked state, thereby realizing integrated connection management during the battery replacement process.

[0043] In the present embodiment, a battery system is provided, which includes the bottom support with a lock according to any of the above embodiments, such as Figure 5 As shown, the battery system further includes a battery box 03. The battery box 03 can include a battery frame unit 31, a battery unit, and a second electrical connection unit. The battery frame unit 31 can include a battery frame body 311 and a third positioning hole 312. The battery unit can be connected with the battery frame body 311. The second electrical connection unit can be connected with the battery frame body 311. The second electrical connection unit and the battery unit can be electrically connected. The third positioning hole 312 can be provided on the battery frame body 311. In the locked state, the second electrical connection unit can be electrically connected with the first electrical connection unit 13, and the electrical path between the bottom support and the battery box 03 is established, and mechanical fixation and circuit conduction are simultaneously completed in the locked state; the second rotating shaft 222 can be inserted into the third positioning hole 312 to limit the movement of the locking assembly. Through the insertion and cooperation of the third positioning hole 312 and the second rotating shaft 222, the cooperative locking of the battery box 03 and the bottom support is formed in the locked state.

[0044] In the present embodiment, as shown in Figure 1 The bottom frame assembly 01 includes a guide unit 12. One end of the guide unit 12 can be connected with the bottom frame unit 11, and the other end can extend away from the bottom frame unit 11. The guide unit 12 can include a first guide portion 121 and a second guide portion 122, and the extension length of the second guide portion 122 can be less than that of the first guide portion 121. The projection area of the second guide portion 122 in the extension direction of the guide unit 12 can be less than that of the first guide portion 121 in the extension direction of the guide unit 12. Through the stepped guide portion design, the first guide portion 121 provides coarse positioning guidance, and the second guide portion 122 realizes precise positioning, reduces the lateral offset amount during installation of the battery box 03, and ensures the docking accuracy of the battery box 03 and the bottom support.

[0045] The guide unit 12 further includes a presser 123, which can be connected with the first guide portion 121. Through the presser 123, a pressing force can be applied to make the battery box 03 frame tightly fit with the bottom frame unit 11, eliminate the assembly gap, enhance the connection rigidity, and prevent relative displacement caused by vibration during hoisting.

[0046] The locked state can include that the battery frame body 311 at least partially abuts against the presser 123, at least partially abuts against the bottom frame unit 11, and the projection of the third positioning hole 312 along the self-extending direction coincides with the projection of the presser 123 along the extending direction of the third positioning hole 312. Through the position correspondence design of the presser 123 and the third positioning hole 312, when the worker contacts the locked state of the locking assembly 02 before the battery box 03 is replaced, it can be observed through the third positioning hole 312 whether the presser 123 is in the pressed state or not, so as to judge whether the replacement can be normally performed.

[0047] Those skilled in the art can understand that the above-mentioned embodiments are specific cases for implementing the present disclosure, and in actual application, various changes can be made in form and details without departing from the scope of the present disclosure.

Claims

1. A band lock cup holder characterized by, The bottom support with the lock comprises: a bottom frame assembly comprising a bottom frame unit; the bottom frame unit is arranged in a ring-shaped frame structure; a locking assembly comprising a rotating unit; the rotating unit comprises a first rotating shaft, a second rotating shaft, and a connecting module; one end of the connecting module is connected with the first rotating shaft, and the other end is connected with the second rotating shaft; the first rotating shaft and the second rotating shaft extend in the same direction; the first rotating shaft is rotationally connected with the bottom frame unit; the bottom support comprises a locked state and an unlocked state; in the unlocked state, a projection profile of the rotating unit along a first direction is contained in one side of the bottom frame unit; in the locked state, a projection profile of the second rotating shaft along the first direction is outside one side of the bottom frame unit; the first direction is the axis direction of the first rotating shaft.

2. The bottom support with the lock according to claim 1, wherein the bottom frame unit comprises a bottom frame body, a first positioning hole, and a second positioning hole; the first positioning hole and the second positioning hole are arranged on the outside of the bottom frame body; in the unlocked state, the first rotating shaft is inserted into the first positioning hole, and the second rotating shaft is inserted into the second positioning hole; in the locked state, the first rotating shaft is inserted into the first positioning hole.

3. The bottom support with the lock according to claim 2, wherein the locking assembly further comprises a lock tongue unit; the lock tongue unit comprises a tongue body, a tongue hole, and a bolt; one end of the lock tongue unit is connected with the bottom frame body, and the other end extends away from the bottom frame body; the tongue hole penetrates through the tongue body; the connecting module comprises a connecting body, a first limiting groove, and a limiting hole; the first limiting groove penetrates through the connecting body; in the locked state, the tongue body penetrates through the first limiting groove, the first limiting groove is located between the side wall of the bottom frame unit and the tongue hole, the bolt penetrates through the tongue hole and the limiting hole, and the bolt limits the movement of the locking assembly.

4. The bottom support with the lock according to claim 3, wherein the rotating unit further comprises a limiting unit; the limiting unit comprises a limiting body and a second limiting groove; the limiting body is connected with the connecting body; the second limiting groove penetrates through the limiting body; in the unlocked state, the tongue body penetrates through the second limiting groove, and the bolt limits the movement of the locking assembly.

5. The bottom support with the lock according to claim 1, wherein the length of the first rotating shaft is greater than the length of the second rotating shaft.

6. The bottom support with the lock according to claim 1, wherein the bottom frame assembly comprises a guide unit; one end of the guide unit is connected with the bottom frame unit, and the other end extends away from the bottom frame unit; the guide unit comprises a first guide part and a second guide part; the extension length of the second guide part is less than the extension length of the first guide part; the projection area of the second guide part in the extension direction of the guide unit is less than the projection area of the first guide part in the extension direction of the guide unit.

7. The bottom holder with lock according to claim 6, wherein, the guide unit further comprises a presser, and the presser is connected with the first guide part.

8. The bottom holder with lock according to claim 7, wherein, the bottom frame unit further comprises a first electrical connection unit, and the first electrical connection unit is connected with the bottom frame assembly.

9. A battery system characterized by, the battery system comprises the bottom holder with lock according to any one of claims 1-8, the battery system further comprises a battery box, and the battery box comprises a battery frame unit, a battery unit, and a second electrical connection unit; the battery frame unit comprises a battery frame body and a third positioning hole; the battery unit is connected with the battery frame body; the second electrical connection unit is connected with the battery frame body; the second electrical connection unit and the battery unit are electrically connected; the third positioning hole is arranged on the battery frame body; in the locked state, the second rotating shaft is inserted into the third positioning hole to limit the movement of the locking assembly.

10. The battery system according to claim 9, wherein, the bottom frame assembly comprises a guide unit, one end of the guide unit is connected with the bottom frame unit, and the other end of the guide unit extends away from the bottom frame unit; the guide unit comprises a first guide part and a second guide part; the extension length of the second guide part is less than the extension length of the first guide part; the projection area of the second guide part in the extension direction of the guide unit is less than the projection area of the first guide part in the extension direction of the guide unit; the guide unit further comprises a presser, and the presser is connected with the first guide part; the locked state comprises that the battery frame body at least partially abuts against the presser, at least partially abuts against the bottom frame unit, and the projection of the third positioning hole in the extension direction thereof coincides with the projection of the presser in the extension direction of the third positioning hole.

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