Clamping mechanism and liquid injection tool

Abstract

The utility model discloses a clamping mechanism which comprises a supporting assembly and a clamping assembly. The top fixing assembly comprises a bearing part and a first fixing part, the bearing part is arranged on the supporting assembly, and the first fixing part is arranged on the bearing part; the bottom fixing assembly is arranged on the supporting assembly, and the bottom fixing assembly and the first fixing piece are oppositely arranged in a spaced mode in the Y-axis direction; the side fixing assembly and the bearing piece are oppositely arranged at intervals in the X-axis direction; and the driving assembly is arranged on the supporting assembly, and the output end of the driving assembly is connected with the side fixing assembly. The utility model further discloses a liquid injection tool. The first fixing piece, the bottom fixing assembly and the side fixing assembly act on the top, the bottom and the side of the battery correspondingly, the battery is clamped and fixed in the X-axis direction and the Y-axis direction, and radial shaking of the battery is avoided. The driving assembly is arranged to drive the side fixing assembly to move in the X-axis direction, so that the battery is placed in the clamping mechanism to be clamped or taken out of the clamping mechanism, and the appearance of the battery is prevented from being damaged.

Description

Technical Field

[0001] This utility model relates to the field of battery liquid injection technology, specifically to a clamping mechanism and liquid injection tooling. Background Technology

[0002] Cylindrical batteries are a type of new energy battery with a long history of commercialization and large-scale commercial applications. The manufacturing process of cylindrical batteries is mature, involving more than fifty steps. Among these, electrolyte filling is an essential step. During electrolyte filling, the cylindrical battery needs to be fixed in place to prevent displacement, which would affect the filling effect.

[0003] Currently, cylindrical batteries require a fixing mechanism. Because cylindrical batteries are typically quite tall, this mechanism needs to secure them from all angles to prevent radial movement. This design often makes placing or removing the cylindrical battery from the fixing mechanism inconvenient and can even damage its appearance. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a clamping mechanism and a liquid injection fixture.

[0005] The clamping mechanism disclosed in this utility model includes:

[0006] Support components;

[0007] The top fixing component includes a carrier and a first fixing component, wherein the carrier is disposed on the support component and the first fixing component is disposed on the carrier;

[0008] A bottom fixing component is disposed on the support component, and is spaced apart from the first fixing member along the Y-axis direction;

[0009] The side fixing assembly is disposed at a distance from the bearing member along the X-axis; and

[0010] A drive component is disposed on the support component, and the output end of the drive component is connected to the side fixing component;

[0011] The first fixing component and the bottom fixing component can act on the top and bottom of the battery respectively, and the driving component can drive the side fixing component to move along the X-axis and act on the side of the battery to achieve battery clamping.

[0012] According to one embodiment of the present invention, the first fixing member has a first receiving groove along the X-axis direction, and the first receiving groove can abut against the side of the top of the battery.

[0013] According to one embodiment of the present invention, the first fixing member further has an abutting portion along the X-axis direction. The abutting portion is disposed above the first receiving groove. The bottom surface of the abutting portion can be spaced apart from the top surface of the top of the battery, and the side surface of the abutting portion can abut against the side surface of the terminal post at the top of the battery.

[0014] According to one embodiment of the present invention, the bottom fixing component has a third receiving groove along the Y-axis direction, the bottom surface of the third receiving groove can abut against the bottom surface of the bottom of the battery, and the side surface of the third receiving groove can abut against the side surface of the bottom of the battery.

[0015] According to one embodiment of the present invention, the third receiving groove is provided with a first flared area and a first receiving area connected along the X-axis direction, and the bottom of the battery can enter through the first flared area and engage with the first receiving area.

[0016] According to one embodiment of the present invention, the bottom fixing component further has a second receiving groove along the Y-axis direction. The second receiving groove is disposed on the bottom surface of the third receiving groove, and the second receiving groove and the third receiving groove form a step. The second receiving groove can accommodate the bottom terminal post of the battery, and the bottom surface of the second receiving groove can be spaced apart from the bottom surface of the bottom terminal post of the battery.

[0017] According to one embodiment of the present invention, the third receiving groove is provided with a first flared area and a first receiving area connected along the X-axis direction, and the bottom of the battery can enter through the first flared area and be engaged with the first receiving area; and / or the second receiving groove is provided with a second flared area and a second receiving area connected along the X-axis direction, and the terminal post at the bottom of the battery can enter through the second flared area and be received in the second receiving area.

[0018] According to one embodiment of the present invention, the side fixing component includes a third fixing member, which is connected to the output end of the drive component, and the third fixing member and the carrier member are spaced apart and opposite to each other along the X-axis direction; the third fixing member has a fourth receiving groove along the X-axis direction, which can abut against the side of the battery.

[0019] According to one embodiment of the present invention, the side fixing component further includes a buffer member, which is disposed in the fourth receiving groove and can abut against the side of the battery.

[0020] According to one embodiment of the present invention, the output end of the drive component includes a linkage member and a first limiting member, and the third fixing member has a through hole along the X-axis direction. The linkage member passes through the through hole and is detachably connected to the third fixing member through cooperation with the first limiting member.

[0021] According to one embodiment of the present invention, the carrier has at least two mounting positions along the Y-axis direction, the first fixing member is detachably disposed in one of the mounting positions, and the first fixing member can be switched between at least two mounting positions.

[0022] According to one embodiment of the present invention, the first fixing member is detachably disposed on the bearing member; and / or the bottom fixing component is detachably disposed on the support component; and / or the side fixing component is detachably connected to the output end of the drive component.

[0023] The present invention discloses a liquid injection fixture, including the above-mentioned clamping mechanism.

[0024] The beneficial effects of this utility model are as follows:

[0025] When it is necessary to place the battery in the clamping mechanism for clamping, the battery can first be placed between the first fixing member and the bottom fixing member along the X-axis direction, so that the first fixing member acts on the top of the battery and the bottom fixing member acts on the bottom of the battery. Then, the driving component drives the side fixing member to move along the X-axis direction and act on the side of the battery, thereby achieving the clamping and fixing of the battery.

[0026] When it is necessary to remove the battery from the clamping mechanism, the side fixing component can be moved away from the side of the battery by the drive component along the X-axis and then the battery can be removed from the clamping mechanism along the X-axis.

[0027] Three components—the first fixing member, the bottom fixing assembly, and the side fixing assembly—act on the top, bottom, and sides of the battery respectively, clamping and securing the battery in the X and Y axes to prevent radial movement. A drive assembly moves the side fixing assembly along the X-axis, facilitating the placement and removal of the battery from the clamping mechanism, thus preventing damage to the battery's appearance. Attached Figure Description

[0028] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0029] Figure 1 This is a three-dimensional structural diagram of the clamping mechanism;

[0030] Figure 2 This is a cross-sectional view of the clamping mechanism;

[0031] Figure 3 A three-dimensional structural diagram of the top fixing component;

[0032] Figure 4 This is a front view of the load-bearing component;

[0033] Figure 5 This is a three-dimensional structural diagram of the bottom fixing component;

[0034] Figure 6 This is the front view of the bottom fixed component;

[0035] Figure 7 This is a split structural diagram of the side fixing component;

[0036] Figure 8 A three-dimensional structural diagram of the liquid injection fixture;

[0037] Figure 9 This is another three-dimensional structural diagram of the liquid injection fixture.

[0038] Explanation of reference numerals in the attached figures

[0039] 1. Support assembly; 11. First side plate; 12. Second side plate; 13. Base plate; 14. Support plate; 15. Handle;

[0040] 2. Top fixing component; 21. Bearing member; 211. Mounting position; 22. First fixing member; 221. First receiving groove; 222. Abutment part;

[0041] 3. Bottom fixing component; 31. Mounting component; 32. Second fixing component; 321. Second receiving groove; 3211. Second flared area; 3212. Second receiving area; 322. Third receiving groove; 3221. First flared area; 3222. First receiving area;

[0042] 4. Side fixing assembly; 41. Third fixing member; 411. Fourth receiving groove; 412. Through hole; 42. Buffer member;

[0043] 5. Drive component; 51. Linkage component; 52. First limiting component; 53. Second limiting component;

[0044] 100. Battery. Detailed Implementation

[0045] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0046] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0047] Example 1

[0048] like Figure 1 and Figure 2 As shown, Figure 1 This is a three-dimensional structural diagram of the clamping mechanism; Figure 2 This is a cross-sectional view of the clamping mechanism. The clamping mechanism of this application includes a support assembly 1, a top fixing assembly 2, a bottom fixing assembly 3, a side fixing assembly 4, and a drive assembly 5. The support assembly 1 is used to support other components. The top fixing assembly 2 is disposed on the support assembly 1, and the bottom fixing assembly 3 is disposed on the support assembly 1. The bottom fixing assembly 3 and the top fixing assembly 2 are arranged opposite each other along the Y-axis direction. The side fixing assembly 4 and the top fixing assembly 2 are arranged at intervals opposite each other along the X-axis direction. The drive assembly 5 is disposed on the support assembly 1, and the output end of the drive assembly 5 is connected to the side fixing assembly 4.

[0049] This embodiment will take clamping a cylindrical battery 100 as an example. The battery 100 has outwardly protruding terminals at both the top and bottom. The battery 100 is placed between the top fixing component 2 and the bottom fixing component 3. The top fixing component 2 acts on the top of the battery 100, and the bottom fixing component 3 acts on the bottom of the battery 100. The driving component 5 drives the side fixing component 4 to move along the X-axis and act on the side of the battery 100, thereby achieving clamping and fixing of the battery 100.

[0050] Please review Figure 1 and Figure 2The support assembly 1 includes a first side plate 11, a second side plate 12, a base plate 13, and a support plate 14. The first side plate 11 and the second side plate 12 are spaced apart and opposite to each other. The two ends of the base plate 13 are respectively connected to the first side plate 11 and the second side plate 12. The support plate 14 is arranged parallel above the base plate 13, and its two ends are also respectively connected to the first side plate 11 and the second side plate 12. The support plate 14 is connected to the base plate 13 through multiple support rods. The top fixing assembly 2, the bottom fixing assembly 3, and the side fixing assembly 4 are all disposed on the support plate 14. Preferably, the support assembly 1 is also provided with two handles 15, which are respectively disposed on the side of the first side plate 11 and the second side plate 12 that are far apart from each other. The handles 15 facilitate the operator's handling or movement.

[0051] Please refer to the following: Figure 3 and Figure 4 As shown, Figure 3 A three-dimensional structural diagram of the top fixing component 2; Figure 4 This is a front view of the support member 21. The top fixing assembly 2 includes the support member 21 and the first fixing member 22. The support member 21 is disposed on the support plate 14, and the first fixing member 22 is detachably disposed on the support member 21. Specifically, the first fixing member 22 is connected to the support member 21 by bolts and nuts. Further, the support member 21 has multiple mounting positions 211 along the Y-axis direction, and the first fixing member 22 is detachably disposed on one of the mounting positions 211. In use, the first fixing member 22 can be switched between different mounting positions 211 to adapt to batteries 100 of different specifications. If the first fixing member 22 still cannot adapt to the battery 100 by switching mounting positions 211, the first fixing member 22 can be removed from the support member 21 and replaced with another first fixing member 22 to adapt to the battery 100 that needs to be clamped.

[0052] The first fixing member 22 has a first receiving groove 221 along the X-axis direction. The first receiving groove 221 is adapted to the top of the battery 100. Specifically, after the top of the battery 100 is placed into the first receiving groove 221, the groove wall of the first receiving groove 221 abuts against the side of the top of the battery 100. In order to improve the fixing effect of the battery 100, the shape of the groove wall of the first receiving groove 221 is adapted to the shape of the side of the top of the battery 100, that is, the shape of the groove wall of the first receiving groove 221 is arc-shaped.

[0053] The first fixing member 22 also has an abutment portion 222 along the X-axis direction, wherein the abutment portion 222 is located above the first receiving groove 221; when the top of the battery 100 is placed into the first receiving groove 221, there is a gap between the bottom surface of the abutment portion 222 and the top surface of the top of the battery 100, thereby preventing the abutment portion 222 from damaging the top surface of the top of the battery 100. At the same time, the side of the abutment portion 222 abuts against the side of the terminal post on the top of the battery 100, thereby improving the fixing effect of the battery 100.

[0054] Please refer to the following: Figure 5 and Figure 6 As shown, Figure 5 A three-dimensional structural diagram of the bottom fixing component 3; Figure 6 This is a front view of the bottom fixing assembly 3. The bottom fixing assembly 3 includes a mounting member 31 and a second fixing member 32. The mounting member 31 is detachably mounted on the support plate 14, and the second fixing member 32 is mounted on the mounting member 31. The second fixing member 32 and the first fixing member 22 are spaced apart and opposite to each other along the Y-axis. Specifically, the mounting member 31 and the support plate 14 are connected by bolts and nuts to facilitate subsequent disassembly and replacement. In use, the bottom of the battery 100 abuts against the second fixing member 32, thus clamping and fixing the battery 100.

[0055] The second fastener 32 has a third receiving groove 322, which is opened along the Y-axis. Specifically, after the bottom of the battery 100 is placed into the third receiving groove 322, the bottom surface of the third receiving groove 322 abuts against the bottom surface of the battery 100, thereby supporting and fixing the battery 100. At the same time, the side of the third receiving groove 322 abuts against the side of the bottom of the battery 100, thereby improving the fixing effect of the battery 100.

[0056] Furthermore, the third receiving groove 322 has a first flared area 3221 and a first receiving area 3222 connected along the X-axis direction. The first flared area 3221 is close to the side fixing component 4. After the first flared area 3221 is connected to the first receiving area 3222, its cross-sectional shape is similar to a trumpet shape or similar to a U-shaped structure with an enlarged opening. The setting of the first flared area 3221 makes it easier for the bottom of the battery 100 to be placed into the third receiving groove 322. Furthermore, the first receiving area 3222 and the first receiving groove 221 are spaced apart and opposite to each other in the Y-axis direction. When it is necessary to put the bottom of the battery 100 into the third receiving groove 322, the operator can place the bottom of the battery 100 in the first flared area 3221 along the Y-axis direction, and then push the battery 100 towards the first receiving area 3222 in the X-axis direction. Finally, the bottom of the battery 100 is stuck in the first receiving area 3222. At this time, the third receiving groove 322 and the first receiving groove 221 abut against the bottom and top of the battery 100 respectively, thereby fixing the battery 100.

[0057] Preferably, the bottom fixing component 3 further includes a second receiving groove 321, which is opened along the Y-axis direction and is disposed on the bottom surface of the third receiving groove 322. The third receiving groove 322 and the second receiving groove 321 together form a stepped structure. Specifically, after the bottom of the battery 100 is placed in the third receiving groove 322, the second receiving groove 321 can accommodate the bottom terminal of the battery 100. Simultaneously, there is a gap between the bottom surface of the second receiving groove 321 and the bottom surface of the bottom terminal of the battery 100. The opening of the second receiving groove 321 avoids contact with the bottom terminal of the battery 100, preventing wear and damage to the bottom terminal of the battery 100.

[0058] Furthermore, the second receiving groove 321 is provided with a second flared area 3211 and a second receiving area 3212 connected along the X-axis direction. In the Y-axis direction, the first flared area 3221 corresponds to the second flared area 3211, and the first receiving area 3222 corresponds to the second receiving area 3212. During the process of the bottom of the battery 100 being placed into the third receiving groove 322, the terminal post at the bottom of the battery 100 enters through the second flared area 3211 and is received in the second receiving area 3212.

[0059] Preferably, in this embodiment, the mounting member 31 is located at the bottom of the support plate 14 (i.e., the side of the support plate 14 away from the first fixing member 22), and the upper surface of the second fixing member 32 is flush with the upper surface of the support plate 14. This not only makes full use of the space and makes the overall structure more compact, which is conducive to saving space, but also makes it easier for the bottom of the battery 100 to be placed into the third receiving groove 322.

[0060] Please refer to the following: Figure 7 As shown, Figure 7 This is a split structural diagram of the side fixing assembly 4. The side fixing assembly 4 includes a third fixing member 41, which is connected to the output end of the drive assembly 5. The third fixing member 41 and the carrier member 21 are spaced apart and opposite to each other in the X-axis direction. The drive assembly 5 drives the third fixing member 41 to move along the X-axis direction and act on the side between the top and bottom of the battery 100. The third fixing member 41 has a fourth receiving groove 411 along the X-axis direction. The fourth receiving groove 411 is adapted to the side of the battery 100. Taking a cylindrical battery 100 as an example, the fourth receiving groove 411 is a semi-circular groove. During operation, the fourth receiving groove 411 will fit against the side of the battery 100. The first fixing member 22, the second fixing member 32 and the third fixing member 41 cooperate with each other to clamp and fix the battery 100 in the X-axis and Y-axis directions, preventing the battery 100 from radially shaking in subsequent processes.

[0061] Furthermore, the side fixing assembly 4 also includes a buffer 42, which is disposed on the surface of the fourth receiving groove 411. When the battery 100 is clamped and fixed, the buffer 42 is located between the side of the battery 100 and the fourth receiving groove 411. Specifically, the buffer 42 is made of a soft material, such as existing foam. The buffer 42 can effectively reduce the hard contact between the third fixing member 41 and the side of the battery 100. At the same time, it also makes the side of the battery 100 bear force evenly and reduces the wear of the third fixing member 41 on the side of the battery 100.

[0062] The output end of the drive assembly 5 includes a linkage member 51 and a first limiting member 52. The two ends of the linkage member 51 are detachably connected to the drive assembly 5 and the third fixing member 41, respectively. The first limiting member 52 is disposed on the linkage member 51 and abuts against the third fixing member 41. Specifically, the third fixing member 41 also has a through hole 412 opened along the X-axis direction. The linkage member 51 passes through the through hole 412, and the linkage member 51 achieves a detachable connection with the third fixing member 41 through cooperation with the first limiting member 52.

[0063] In this embodiment, the linkage 51 is a bolt, and the first limiting member 52 is a nut. The linkage 51 is threadedly connected to the drive assembly 5, and the linkage 51 and the first limiting member 52 are also threadedly connected. In use, by rotating, the linkage 51 is threadedly connected to the drive assembly 5, and the first limiting member 52 is located between the drive assembly 5 and the third fixing member 41. By rotating the first limiting member 52, one side of the first limiting member 52 abuts against the third fixing member 41. The first limiting member 52 prevents the third fixing member 41 from loosening or retracting during the process of abutting against the side of the battery 100, thereby improving the clamping and fixing effect on the battery 100.

[0064] Furthermore, the output end of the drive assembly 5 also includes a second limiting member 53, which is disposed on the linkage member 51 and abuts against the drive assembly 5. Specifically, the second limiting member 53 is a nut, located between the drive assembly 5 and the third fixing member 41. In use, by rotating the second limiting member 53, one side of the second limiting member 53 abuts against the drive assembly 5. The setting of the second limiting member 53 can prevent the linkage member 51 from becoming loose, thereby improving the clamping and fixing effect on the battery 100.

[0065] It should also be noted that the drive component 5 can be a cylinder or a quick clamp, as long as it can drive the third fixing part 41 to move along the X-axis. Cylinders or quick clamps are existing technologies, and their working principles will not be elaborated here.

[0066] In summary, the first fixing component 22, the bottom fixing component 3, and the side fixing component 4 act on the top, bottom, and side of the battery 100 respectively, clamping and fixing the battery 100 in the X-axis and Y-axis directions, thus preventing radial wobbling of the battery 100. The drive component 5 moves the side fixing component 4 along the X-axis, facilitating the placement and clamping of the battery 100 in the clamping mechanism or its removal, thereby preventing damage to the appearance of the battery 100. Furthermore, the first fixing component 22, and / or the bottom fixing component 3, and / or the side fixing component 4 can be directly replaced to accommodate batteries 100 of different specifications, thereby improving the versatility of the clamping mechanism, reducing the amount of clamping mechanism stock, and lowering production costs.

[0067] Example 2

[0068] The difference between this embodiment and Embodiment 1 is that the clamping mechanism in this embodiment is a dual-station mechanism. Specifically, this embodiment includes two top fixing components 2, two bottom fixing components 3, two side fixing components 4, and two drive components 5, arranged in the same way as in Embodiment 1. This allows for the simultaneous clamping and fixing of two batteries 100, facilitating synchronized electrolyte injection into the two batteries 100. Of course, the aforementioned dual-station mechanism is only one application scenario; other configurations such as three-station, four-station, etc., are also possible.

[0069] Example 3

[0070] like Figure 8 and Figure 9 As shown, Figure 8 A three-dimensional structural diagram of the liquid injection fixture; Figure 9 This is another three-dimensional structural diagram of the liquid injection fixture. The liquid injection fixture of this application includes a clamping mechanism and a liquid injection mechanism (not shown in the figure), with the liquid injection mechanism positioned above the clamping mechanism. In specific applications, the clamping mechanism adopts the structure in Embodiment 1 or Embodiment 2, and the liquid injection mechanism adopts an existing liquid injection device, such as the liquid injection structure disclosed in patent number "202322053617.7".

[0071] During operation, first open the flipping fixing part of the liquid injection mechanism, and flip the can body by flipping the carrier of the liquid injection mechanism. Then, put in the battery 100 and push the battery 100 between the first fixing part 22 and the second fixing part 32. The first receiving groove 221 and the third receiving groove 322 of the first fixing part 22 abut against the top and bottom of the battery 100, respectively. Taking the quick clamp as an example, the operator manually moves the quick clamp so that the movement axis of the quick clamp moves along the X-axis. At this time, the linkage 51 drives the third fixing part 41 and the buffer part 42 to move together, so that the third fixing part 41 presses the battery 100 through the buffer part 42, realizing the clamping and fixing of the battery 100 in the X-axis and Y-axis directions. Then, flip the can body back to the initial position, connect the liquid injection nozzle of the liquid injection mechanism to the liquid injection port of the battery 100, and finally inject the electrolyte in the can body into the battery 100.

[0072] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A clamping mechanism, characterized in that, include: Support component (1); The top fixing component (2) includes a carrier (21) and a first fixing component (22), wherein the carrier (21) is disposed on the support component (1) and the first fixing component (22) is disposed on the carrier (21); Bottom fixing component (3) is disposed on the support component (1) and is disposed at a distance from the first fixing member (22) along the Y-axis direction; The side fixing component (4) is arranged opposite to the bearing (21) along the X-axis direction; as well as A drive assembly (5) is disposed on the support assembly (1), and the output end of the drive assembly (5) is connected to the side fixing assembly (4). The first fixing member (22) and the bottom fixing component (3) can act on the top and bottom of the battery (100) respectively, and the driving component (5) can drive the side fixing component (4) to move along the X-axis and act on the side of the battery (100) to achieve the clamping of the battery (100).

2. The clamping mechanism according to claim 1, characterized in that, The first fixing member (22) has a first receiving groove (221) along the X-axis direction, and the first receiving groove (221) can abut against the side of the top of the battery (100).

3. The clamping mechanism according to claim 2, characterized in that, The first fixing member (22) also has an abutment portion (222) along the X-axis direction. The abutment portion (222) is disposed above the first receiving groove (221). The bottom surface of the abutment portion (222) can be spaced apart from the top surface of the top of the battery (100). The side surface of the abutment portion (222) can abut against the side surface of the terminal post at the top of the battery (100).

4. The clamping mechanism according to claim 1, characterized in that, The bottom fixing component (3) has a third receiving groove (322) along the Y-axis direction. The bottom surface of the third receiving groove (322) can abut against the bottom surface of the bottom of the battery (100), and the side surface of the third receiving groove (322) can abut against the side surface of the bottom of the battery (100).

5. The clamping mechanism according to claim 4, characterized in that, The third receiving groove (322) is provided with a first flared area (3221) and a first receiving area (3222) connected along the X-axis direction. The bottom of the battery (100) can enter through the first flared area (3221) and engage with the first receiving area (3222).

6. The clamping mechanism according to claim 4, characterized in that, The bottom fixing component (3) also has a second receiving groove (321) along the Y-axis direction. The second receiving groove (321) is disposed on the bottom surface of the third receiving groove (322). The second receiving groove (321) and the third receiving groove (322) form a step. The second receiving groove (321) can accommodate the bottom pole of the battery (100), and the bottom surface of the second receiving groove (321) can be spaced apart from the bottom surface of the bottom pole of the battery (100).

7. The clamping mechanism according to claim 6, characterized in that, The third receiving groove (322) is provided with a first flared area (3221) and a first receiving area (3222) connected along the X-axis direction. The bottom of the battery (100) can enter through the first flared area (3221) and engage with the first receiving area (3222); and / or the second receiving groove (321) is provided with a second flared area (3211) and a second receiving area (3212) connected along the X-axis direction. The terminal post at the bottom of the battery (100) can enter through the second flared area (3211) and be received in the second receiving area (3212).

8. The clamping mechanism according to claim 1, characterized in that, The side fixing component (4) includes a third fixing member (41), which is connected to the output end of the drive component (5), and the third fixing member (41) and the carrier (21) are spaced apart and opposite to each other along the X-axis direction; the third fixing member (41) has a fourth receiving groove (411) along the X-axis direction, which can abut against the side of the battery (100).

9. The clamping mechanism according to claim 8, characterized in that, The side fixing assembly (4) also includes a buffer (42), which is disposed in the fourth receiving groove (411) and can abut against the side of the battery (100).

10. The clamping mechanism according to claim 8, characterized in that, The output end of the drive assembly (5) includes a linkage (51) and a first limiting member (52). The third fixing member (41) has a through hole (412) along the X-axis direction. The linkage (51) passes through the through hole (412) and is detachably connected to the third fixing member (41) by cooperating with the first limiting member (52).

11. The clamping mechanism according to claim 1, characterized in that, The carrier (21) has at least two mounting positions (211) along the Y-axis direction, and the first fixing member (22) is detachably disposed in one of the mounting positions (211). The first fixing member (22) can be switched between at least two of the mounting positions (211).

12. The clamping mechanism according to any one of claims 1-11, characterized in that, The first fixing member (22) is detachably disposed on the bearing member (21); and / or the bottom fixing component (3) is detachably disposed on the support component (1); and / or the side fixing component (4) is detachably connected to the output end of the drive component (5).

13. A liquid injection fixture, characterized in that, Includes the clamping mechanism described in any one of claims 1-12.

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