A portable battery fixing device

By combining the linkage structure of the device's pull rod, clamping block, and connecting rod assembly with the silicone buffer pad, the problems of loose battery fixing and cumbersome operation are solved, achieving stable battery fixing and quick replacement. It is suitable for high-frequency vibration scenarios and improves the stability and safety of the equipment.

CN224310479UActive Publication Date: 2026-06-02PERFECT TECHNOLOGY (GUANGDONG) CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
PERFECT TECHNOLOGY (GUANGDONG) CO LTD
Filing Date
2025-07-15
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing battery mounting methods are prone to loosening or loss of elasticity after frequent use, causing the battery to wobble. Furthermore, screw-fastening structures are cumbersome and time-consuming, making it difficult to meet the high stability and rapid replacement requirements of electric vehicles and portable devices.

Method used

The device employs a linkage structure consisting of a pull rod, a clamping block, and a connecting rod assembly. Utilizing the lever principle and the transmission of the connecting rod assembly, the battery is securely fixed by pressing the pull rod. Combined with the support of the silicone buffer pad and the support base, it enables quick fixing and loosening.

Benefits of technology

It achieves reliable battery fixation, preventing shaking and detachment, is easy to operate, shortens replacement time, is suitable for high-frequency vibration scenarios, extends battery life, and improves equipment stability and safety.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224310479U_ABST
    Figure CN224310479U_ABST
Patent Text Reader

Abstract

The utility model relates to battery dismounting tool technical field, concretely is a kind of portable battery fixing device, including device pull rod, one end of device pull rod is rotatably connected with pressure block, and the outside of pressure block is equipped with buffer pad, and the bottom of device pull rod and pressure block is supported by support seat, and the top side of support seat is connected with device pull rod by connecting rod assembly, and the bottom of pressure block is rotatably connected with support seat, when device pull rod is pressed downward, drive pressure block to compress battery, when device pull rod is pulled upward, drive pressure block to release battery. In the portable battery fixing device, the linkage structure of device pull rod, pressure block and connecting rod assembly is formed when pressing pull rod Stable lever pressure, so that pressure block is always closely adhered to battery surface. The stable support of overall structure is matched with support seat, the impact force generated by equipment vibration can be effectively offset, and the battery shaking problem caused by traditional buckle loosening or spring piece spring force attenuation is avoided.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of battery installation and removal tools, specifically to a convenient battery fixing device. Background Technology

[0002] In various battery-powered devices, secure battery installation is crucial for ensuring stable operation. Currently, common battery fixing methods include clips, spring clips, and screw fastening. For example, in the "Lead-acid Battery Fixing Structure" disclosed in patent CN215184388U, outward-facing folded edges are provided on opposite sides of a single lead-acid battery, and fasteners are used to secure these edges to the edge of the battery compartment opening. However, in practical applications, these traditional fixing methods reveal many drawbacks. Clip structures are prone to loosening after prolonged use, causing the battery to wobble during device operation and affecting device performance; spring clip structures gradually lose their elasticity over time, significantly reducing their fixing effect; and while screw fastening provides a relatively secure fix, the operation is extremely cumbersome, consuming considerable time and effort in scenarios requiring frequent battery replacements, severely reducing work efficiency.

[0003] Especially in applications such as electric vehicles and portable electronic devices, where battery stability is extremely critical and frequent vibrations or rapid battery replacements are required, existing battery securing devices are increasingly failing to meet the demands. Battery movement or drops can not only cause equipment malfunctions but also lead to safety accidents with serious consequences. Therefore, developing a new type of battery securing device that effectively solves these problems and provides reliable and convenient fixation has become a crucial issue that urgently needs to be addressed in this field. Utility Model Content

[0004] The purpose of this invention is to provide a convenient battery fixing device to solve the problem that the spring sheet structure mentioned in the background art gradually loses its elasticity over time, resulting in a significant reduction in the battery fixing effect; while the screw fastening structure is relatively secure, the operation process is extremely cumbersome, which consumes a lot of time and effort in scenarios where frequent battery replacement is required, seriously reducing work efficiency.

[0005] To achieve the above objectives, this utility model provides a convenient battery fixing device, including a device pull rod. One end of the device pull rod is rotatably connected to a clamping block. A buffer pad is installed on the outside of the clamping block. The bottom of the device pull rod and the clamping block are supported by a support base. The top side of the support base is connected to the device pull rod through a connecting rod assembly. The bottom of the clamping block is rotatably connected to the support base. When the device pull rod is pressed down, it causes the clamping block to press the battery firmly. When the device pull rod is pulled up, it causes the clamping block to release the battery.

[0006] This device features a pull rod rotatably connected to a clamping block at one end, with both supported at their bottoms by a support base. The top of the support base is connected to the pull rod via a connecting rod assembly, and the bottom of the clamping block is also rotatably connected to the support base. Utilizing the lever principle and the transmission of the connecting rod assembly, when the pull rod is pressed down, the force is transmitted through the connecting rod assembly, causing the clamping block to rotate around its pivot point with the support base, thus clamping the battery. When the pull rod is pulled up, the reverse force causes the clamping block to release the battery.

[0007] Preferably, a handle is installed at the end of the device pull rod away from the clamping block, and the handle is covered with an anti-slip sleeve.

[0008] This feature includes a handle installed at the end of the device's pull rod furthest from the clamping block, providing the operator with a point of leverage for easy pulling and pressing of the pull rod. A non-slip sleeve is fitted over the handle; its rough surface increases friction between the hand and the handle, preventing slippage due to sweaty hands or uneven force during operation.

[0009] Preferably, the device has a first shaft hole near the support base on the pull rod, and the connecting rod assembly includes two parallel first and second rotating shafts. A connecting plate is installed between the two ends of the first and second rotating shafts. The first shaft hole is rotatably connected to the second rotating shaft, and the first rotating shaft is rotatably connected to the top of the support base.

[0010] This device features a first shaft hole near the support base on the pull rod. The second shaft of the connecting rod assembly is rotatably connected to the first shaft hole, and the first shaft is rotatably connected to the top of the support base. The first and second shafts are connected by a connecting plate, forming a stable parallelogram connecting rod structure. When the pull rod is subjected to force and moves up and down, the first shaft hole rotates around the second shaft, simultaneously causing the entire connecting rod assembly to swing around the first shaft, thus converting the up-and-down movement of the pull rod into the rotational power of the clamping block.

[0011] Preferably, the device has a second shaft hole at the end of the pull rod near the clamping block, and a third rotating shaft is installed at the end of the clamping block away from the buffer pad, with the third rotating shaft rotatably connected to the second shaft hole.

[0012] This device features a second shaft hole at the end of the pull rod near the clamping block, and a third rotating shaft installed at the end of the clamping block away from the buffer pad. The third rotating shaft is rotatably connected to the second shaft hole, forming another rotational connection point between the pull rod and the clamping block. This connection method allows the clamping block to rotate flexibly relative to the pull rod around the third rotating shaft, working in conjunction with other connecting structures to achieve the clamping and releasing action of the clamping block on the battery.

[0013] Preferably, the clamping block is provided with a fourth rotating shaft at one end near the support base, and the fourth rotating shaft is rotatably connected to the top of the support base.

[0014] This design incorporates a fourth pivot at one end of the clamping block near the support base, which is rotatably connected to the top of the support base, providing a stable fulcrum for the clamping block. Under the action of the device's pull rod and connecting rod assembly, the clamping block rotates around the fourth pivot, achieving the clamping and releasing action on the battery.

[0015] Preferably, the clamping block has a through hole in the middle near the buffer pad, and a retaining plate is installed in the middle of the back of the buffer pad, the retaining plate cooperating with the through hole.

[0016] This design features a through-hole in the center of the clamping block near the buffer pad, and a retaining plate installed in the center of the back of the buffer pad, which engages with the through-hole. This snap-fit ​​mechanism securely mounts the buffer pad onto the clamping block, ensuring that the buffer pad will not shift or fall off during use.

[0017] Preferably, the buffer pad is made of silicone material, and the card plate is bonded and fixed to the inner wall of the through hole.

[0018] The buffer pad in this feature is made of silicone, which has good elasticity, flexibility, and abrasion resistance. The card plate is bonded to the inner wall of the through hole, further enhancing the connection between the card plate and the through hole and preventing the card plate from coming out of the through hole.

[0019] Preferably, the bottom of the support base is welded and fixed to the outside of the battery compartment. When the device pull rod is pressed down, it drives the connecting rod assembly to swing and press the clamping block against the limit position.

[0020] This feature involves welding the bottom of the support base to the outside of the battery compartment, forming a stable installation foundation. When the device's pull rod is pressed down, it causes the connecting rod assembly to swing. The swing of the connecting rod assembly exerts a clamping and limiting force on the clamping block, causing the clamping block to firmly press the battery and prevent the battery from shifting during equipment operation.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] This portable battery securing device, compared to the rigid fixing method relying on fasteners in patent CN215184388U, utilizes a linkage structure of a pull rod, a clamping block, and a connecting rod assembly. This creates stable lever pressure when the pull rod is pressed, ensuring the clamping block remains tightly fitted to the battery surface. Combined with the support base providing stable support for the overall structure, it effectively counteracts the impact of equipment vibrations, avoiding battery swaying problems caused by loosening of traditional clips or weakening of spring force. It is particularly suitable for high-frequency vibration scenarios such as electric vehicles and industrial equipment.

[0023] Unlike screw-fastening structures that require repeated tightening of tools, this device can secure and release the battery simply by pressing and pulling the lever: when the lever is pressed down, the linkage assembly drives the clamping block to rotate around the support base and form a locking limit; when pulled up, the linkage structure quickly releases the pressure. The entire process requires no additional tools and can be operated by a single person, reducing battery replacement time by more than 50%. It is especially suitable for portable devices or emergency power systems that require frequent battery replacements.

[0024] The silicone buffer pad on the outside of the clamping block achieves a secure installation through the cooperation of the clamping plate and the through hole. Its elastic material can absorb pressure impact during the fixing process, avoiding scratches on the battery casing caused by direct contact with traditional metal fasteners. At the same time, the buffer pad can adapt to the surface curvature of batteries of different sizes, reducing squeezing damage to the battery while ensuring fixing force, thus extending battery life. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a partial structural schematic diagram of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the pull rod in this utility model;

[0028] Figure 4 This is a schematic diagram of the clamping block in this utility model;

[0029] The meanings of the labels in the diagram are as follows:

[0030] 1. Device pull rod; 11. Handle; 12. First shaft hole; 13. Second shaft hole; 14. Connecting rod assembly; 141. First rotating shaft; 142. Second rotating shaft; 143. Connecting plate; 2. Clamping block; 21. Third rotating shaft; 22. Fourth rotating shaft; 23. Through hole; 3. Buffer pad; 31. Clamping plate; 4. Support base. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] This utility model provides a convenient battery fixing device, such as... Figure 1 , Figure 2 As shown, the device includes a pull rod 1, one end of which is rotatably connected to a clamping block 2. A buffer pad 3 is installed on the outside of the clamping block 2. The bottoms of the pull rod 1 and the clamping block 2 are supported by a support base 4. The top side of the support base 4 is connected to the pull rod 1 via a connecting rod assembly 14. The bottom of the clamping block 2 is rotatably connected to the support base 4. When the pull rod 1 is pressed down, it drives the clamping block 2 to press the battery. When the pull rod 1 is pulled up, it drives the clamping block 2 to release the battery.

[0033] One end of the device pull rod 1 is rotatably connected to the clamping block 2, and the bottom of both is supported by the support base 4. The top side of the support base 4 is connected to the device pull rod 1 through the connecting rod assembly 14, and the bottom of the clamping block 2 is also rotatably connected to the support base 4. Utilizing the lever principle and the transmission of the connecting rod assembly 14, when the device pull rod 1 is pressed down, the force is transmitted through the connecting rod assembly 14, causing the clamping block 2 to rotate around the rotation point with the support base 4, thereby clamping the battery; pulling the device pull rod 1 upwards creates a reverse force that causes the clamping block 2 to release the battery. By pulling the device pull rod 1 up and down, the battery can be quickly clamped and released, making the operation convenient and efficient. Compared to traditional complex fixing methods such as screw fastening, this significantly improves the convenience of battery installation and removal, offering a significant advantage in scenarios involving frequent battery replacements. It also provides stable battery fixation, reducing the risk of battery shaking or falling off due to insecure fixing.

[0034] In this embodiment, as Figure 3 As shown, a handle 11 is installed at the end of the device pull rod 1 away from the clamping block 2, and an anti-slip sleeve is fitted on the outside of the handle 11.

[0035] A handle 11 is installed at the end of the device lever 1 furthest from the clamping block 2, providing a force point for operation and facilitating lifting and pressing of the device lever 1. An anti-slip sleeve is fitted over the handle 11 to increase friction between the hand and the handle 11, preventing slippage due to sweaty hands or uneven force during operation. This improves operator comfort and operational stability, ensuring smooth and reliable operation in various environments and preventing battery misalignment or improper locking / unlocking due to operational errors, further enhancing the ease of use and reliability of the device.

[0036] Specifically, such as Figure 3As shown, the device pull rod 1 is provided with a first shaft hole 12 near the support base 4. The connecting rod assembly 14 includes two parallel first rotating shafts 141 and second rotating shafts 142. A connecting plate 143 is installed between the two ends of the first rotating shaft 141 and the second rotating shaft 142. The first shaft hole 12 is rotatably connected to the second rotating shaft 142. The first rotating shaft 141 is rotatably connected to the top of the support base 4.

[0037] A first shaft hole 12 is provided near the support base 4 on the device pull rod 1. The second rotating shaft 142 of the connecting rod assembly 14 is rotatably connected to the first shaft hole 12, and the first rotating shaft 141 is rotatably connected to the top of the support base 4. The first rotating shaft 141 and the second rotating shaft 142 are connected by a connecting plate 143, forming a stable parallelogram connecting rod structure. When the device pull rod 1 moves up and down, the first shaft hole 12 rotates around the second rotating shaft 142, causing the connecting rod assembly 14 to swing around the first rotating shaft 141, converting the up and down movement of the device pull rod 1 into the rotational power of the pressing block 2. This connecting rod assembly 14 structure ensures the stable and reliable power transmission between the device pull rod 1 and the pressing block 2. When pressing or pulling the device pull rod 1, it can accurately control the rotation angle and force of the pressing block 2, so that the pressing block 2 presses the battery evenly and stably, avoiding excessive or insufficient local pressure, improving the stability and reliability of battery fixation, extending the service life of the device, and reducing failures caused by component wear.

[0038] Furthermore, such as Figure 3 , Figure 4 As shown, the end of the device pull rod 1 near the clamping block 2 is provided with a second shaft hole 13, and the end of the clamping block 2 away from the buffer pad 3 is provided with a third rotating shaft 21, which is rotatably connected to the second shaft hole 13.

[0039] A second shaft hole 13 is provided at the end of the device pull rod 1 near the clamping block 2, and a third rotating shaft 21 is installed at the end of the clamping block 2 away from the buffer pad 3. The third rotating shaft 21 is rotatably connected to the second shaft hole 13, forming another rotatable connection point between the device pull rod 1 and the clamping block 2. This connection allows the clamping block 2 to rotate flexibly relative to the device pull rod 1 with the third rotating shaft 21 as the center. In conjunction with other connecting structures, it enables the clamping and loosening of the battery. This enhances the flexibility and controllability of the movement of the clamping block 2. Driven by the device pull rod 1, the clamping block 2 can more accurately conform to the battery surface for clamping operations, adapting to the fixing needs of batteries of different shapes and sizes, and improving the compatibility and versatility of the device for various battery types.

[0040] Furthermore, a fourth rotating shaft 22 is provided at one end of the clamping block 2 near the support base 4, and the fourth rotating shaft 22 is rotatably connected to the top of the support base 4.

[0041] A fourth rotating shaft 22 is provided at one end of the clamping block 2 near the support base 4. The fourth rotating shaft 22 is rotatably connected to the top of the support base 4, providing a stable rotation fulcrum for the clamping block 2. Under the action of the device pull rod 1 and connecting rod assembly 14, the clamping block 2 rotates around the fourth rotating shaft 22, completing the clamping and releasing of the battery. The rotatable connection between the fourth rotating shaft 22 and the support base 4 optimizes the rotation structure of the clamping block 2. In coordination with other connecting structures, it ensures the stability and balance of the clamping block 2 during movement, allowing the clamping block 2 to apply force evenly when clamping the battery, avoiding damage to the battery due to uneven force, and improving the stability and reliability of the entire device operation process.

[0042] Furthermore, such as Figure 2 , Figure 4 As shown, the clamping block 2 has a through hole 23 in the middle near the buffer pad 3, and a clamping plate 31 is installed in the middle of the back of the buffer pad 3. The clamping plate 31 cooperates with the through hole 23.

[0043] The clamping block 2 has a through hole 23 in the center near the buffer pad 3. A retaining plate 31 is installed in the center of the back of the buffer pad 3. The retaining plate 31 cooperates with the through hole 23 to firmly install the buffer pad 3 onto the clamping block 2, preventing the buffer pad 3 from shifting or falling off during use. This facilitates the installation and replacement of the buffer pad 3. When the buffer pad 3 is worn or damaged due to long-term use, it can be quickly replaced to ensure that it continues to provide good cushioning protection. At the same time, the stable connection allows the buffer pad 3 to effectively absorb impact force when clamping the battery, avoiding direct hard contact between the clamping block 2 and the battery, protecting the battery casing and extending battery life.

[0044] Furthermore, such as Figure 4 As shown, the buffer pad 3 is made of silicone material, and the card plate 31 is bonded and fixed to the inner wall of the through hole 23.

[0045] The buffer pad 3 is made of silicone, which has good elasticity, flexibility, and wear resistance. The retaining plate 31 is bonded to the inner wall of the through hole 23, further enhancing the connection and preventing the retaining plate 31 from detaching from the through hole 23. The silicone buffer pad 3 better adapts to the shape of the battery surface, providing uniform cushioning force when pressed, dispersing pressure on the battery, and avoiding localized damage. Furthermore, silicone has good chemical stability and is unlikely to react chemically with the battery, ensuring battery safety. The bonded connection makes the connection between the buffer pad 3 and the pressing block 2 more reliable, ensuring the long-term stability and effectiveness of the buffer pad 3.

[0046] Furthermore, the bottom of the support base 4 is welded and fixed to the outside of the battery compartment. When the device pull rod 1 is pressed down, it drives the connecting rod assembly 14 to swing, pressing the clamping block 2 against the limit position.

[0047] The bottom of the support base 4 is welded and fixed to the outside of the battery compartment, forming a stable installation foundation. When the device pull rod 1 is pressed down, it causes the connecting rod assembly 14 to swing. The swing of the connecting rod assembly 14 generates a clamping and limiting force on the clamping block 2, making the clamping block 2 firmly press the battery and prevent the battery from shifting during equipment operation. The welding fixation ensures the firmness and stability of the connection between the support base 4 and the battery compartment, and can withstand various forces generated during device operation, making it difficult to loosen or fall off. The clamping and limiting effect of the connecting rod assembly 14 further improves the reliability of battery fixation. Even if the equipment is subjected to severe vibration or impact, it can ensure that the battery is in a stable fixed state, avoiding battery shaking or falling and affecting the normal operation of the equipment, thus improving the safety and stability of equipment use.

[0048] This utility model's convenient battery fixing device achieves rapid fixing and loosening of the battery based on the lever principle and linkage transmission mechanism. The device pull rod 1, pressing block 2, support base 4, and linkage assembly 14 constitute a multi-support linkage structure: the support base 4 serves as the fixed foundation of the entire device, connected to the battery compartment by welding, providing stable support for other components; the device pull rod 1 serves as the force input end, and through the rotational connection with the pressing block 2, the third rotating shaft 21 cooperates with the second shaft hole 13, and the linkage assembly 14 transmits the operation by the first shaft hole 12 cooperating with the second rotating shaft 142, and the first rotating shaft 141 cooperating with the support base 4, converting the operator's pressing / pulling action into the rotational motion of the pressing block 2; the pressing block 2, with the fourth rotating shaft 22 as the fulcrum, achieves the pressing or loosening of the battery under the drive of the device pull rod 1, while the buffer pad 3 is installed through the cooperation of the clamping plate 31 and the through hole 23, providing elastic cushioning when in contact with the battery.

[0049] The operator pulls the handle 11 of the device lever 1 upwards. At this time, the device lever 1 rotates upwards around the second pivot 142 connected to the connecting rod assembly 14, causing the connecting rod assembly 14 to swing synchronously around the first pivot 141. Since the device lever 1 is connected to the clamping block 2 through the third pivot 21 and the second shaft hole 13, the pulling action of the lever will generate an upward pulling force on the clamping block 2, causing the clamping block 2 to rotate around the fourth pivot 22 in a direction away from the battery compartment, creating enough space to facilitate the insertion of the battery into the battery compartment. During this process, the anti-slip sleeve can prevent the hand from slipping and ensure smooth operation.

[0050] After the battery is inserted, the operator presses down on handle 11, causing the device lever 1 to rotate downwards and push the connecting rod assembly 14 to swing downwards around the first pivot 141. As the device lever 1 is pressed down, it applies a downward thrust to the clamping block 2 through the third pivot 21, causing the clamping block 2 to rotate towards the battery around the fourth pivot 22. When the device lever 1 is pressed to its lowest point, the connecting rod assembly 14 swings to its limit position, forming a mechanical locking structure. At this time, the silicone buffer pad 3 on the outside of the clamping block 2 is tightly attached to the battery surface. Through the coordinated force of the device lever 1 and the connecting rod assembly 14, the battery is firmly pressed into the battery compartment. The elastic deformation of the buffer pad 3 can adapt to the slight irregularities on the battery surface, while avoiding battery damage caused by direct contact with metal parts.

[0051] When the battery needs to be removed, pull handle 11 upwards again. The device lever 1 drives the connecting rod assembly 14 to swing in the opposite direction, releasing the pressure constraint on the clamping block 2. Under the pulling force of the device lever 1, the clamping block 2 rotates in the opposite direction around the fourth rotating shaft 22, separating the buffer pad 3 from the battery surface, loosening the fixation on the battery, and the operator can easily remove the battery. Throughout the process, the support base 4 is fixed by welding to ensure the stability of the overall structure, the rotational cooperation of each rotating shaft and shaft hole ensures the flexibility of movement, and the adhesive fixation of the clamping plate 31 and the through hole 23 ensures that the buffer pad 3 will not fall off due to frequent contact.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A convenient battery fixing device, comprising a device pull rod (1), characterized in that: One end of the device pull rod (1) is rotatably connected to a clamping block (2). A buffer pad (3) is installed on the outside of the clamping block (2). The bottom of the device pull rod (1) and the clamping block (2) are supported by a support seat (4). The top side of the support seat (4) is connected to the device pull rod (1) through a connecting rod assembly (14). The bottom of the clamping block (2) is rotatably connected to the support seat (4). When the device pull rod (1) is pressed down, it drives the clamping block (2) to press the battery. When the device pull rod (1) is pulled up, it drives the clamping block (2) to release the battery.

2. The portable battery fixing device according to claim 1, characterized in that: The device has a handle (11) installed at the end of the pull rod (1) away from the clamping block (2), and the handle (11) is covered with an anti-slip sleeve.

3. The portable battery fixing device according to claim 1, characterized in that: The device pull rod (1) is provided with a first shaft hole (12) near the support base (4). The connecting rod assembly (14) includes two parallel first rotating shafts (141) and second rotating shafts (142). A connecting plate (143) is installed between the two ends of the first rotating shafts (141) and the second rotating shafts (142). The first shaft hole (12) is rotatably connected to the second rotating shaft (142). The first rotating shaft (141) is rotatably connected to the top of the support base (4).

4. The portable battery fixing device according to claim 1, characterized in that: The device pull rod (1) has a second shaft hole (13) at one end near the clamping block (2), and a third rotating shaft (21) is installed at the end of the clamping block (2) away from the buffer pad (3). The third rotating shaft (21) is rotatably connected to the second shaft hole (13).

5. The portable battery fixing device according to claim 4, characterized in that: The clamping block (2) is provided with a fourth rotating shaft (22) at one end near the support base (4), and the fourth rotating shaft (22) is rotatably connected to the top of the support base (4).

6. The portable battery fixing device according to claim 1, characterized in that: The clamping block (2) has a through hole (23) in the middle near the buffer pad (3), and a clamping plate (31) is installed in the middle of the back of the buffer pad (3), and the clamping plate (31) cooperates with the through hole (23).

7. The portable battery fixing device according to claim 6, characterized in that: The buffer pad (3) is made of silicone material, and the card plate (31) is bonded and fixed to the inner wall of the through hole (23).

8. The portable battery fixing device according to claim 1, characterized in that: The bottom of the support base (4) is welded and fixed to the outside of the battery compartment. When the device pull rod (1) is pressed down, it drives the connecting rod assembly (14) to swing and press the clamping block (2) against the limit position.