Battery clamp

Abstract

The utility model relates to the technical field of welding clamps, in particular to a battery clamp which comprises a limiting shell and an elastic connecting piece, the limiting shell is connected through the elastic connecting piece, clamping force is provided for the limiting shell, due to the buffering characteristic of the elastic connecting piece, even clamping force is provided for a battery shell in a flexible clamping mode, and therefore the clamping force of the battery shell is improved. The clamping force is provided by the elastic connecting piece, deformation of the shell caused by overlarge local pressure is avoided, the problems that in a traditional rigid clamping mode, the clamping force is not uniform, and the shell is prone to deformation are effectively solved, the clamping force is provided by the elastic connecting piece, and a device for providing the clamping force does not need to be additionally arranged, so that the clamp is simpler in structure, fewer in parts, easier to maintain, smaller in size and more flexible to use.

Description

Technical Field

[0001] This utility model relates to the field of welding fixture technology, and more specifically, to a battery fixture. Background Technology

[0002] As one of the most important structural components of the battery cell, the aluminum casing plays a crucial role in packaging the battery cell and protecting it from corrosion. Now, an explosion-proof valve is added to the bottom of the aluminum casing to enhance its explosion-proof function. Because the aluminum casing is relatively flexible, a specialized fixture is needed to ensure precise positioning of the aluminum casing in order to prevent misalignment during welding of the explosion-proof valve to the aluminum casing, which could lead to poor welds and leakage.

[0003] The clamping methods used in existing technologies are mostly mechanical or pneumatic clamping. The clamping force is provided by the clamping device on both sides of the clamp to achieve clamping of the battery casing. However, this method is difficult to control the clamping force, which can easily cause deformation of the battery casing, especially thin-walled or lightweight casings. In addition, the need to set up the pushing device (such as cylinder, hydraulic cylinder, etc.) leads to the complex structure of the clamp, the increase of parts, and the increase of maintenance costs and failure rate. The pushing device usually requires additional space, resulting in a large clamping volume, which limits its application in compact production lines.

[0004] Therefore, there is an urgent need to invent a battery clamp. Utility Model Content

[0005] One of the objectives of this utility model is to provide a battery clamp that addresses the shortcomings of existing technologies. This clamp has a simple and compact structure, requires little space, is easy to use, and is less likely to cause deformation of the battery casing.

[0006] To solve the above-mentioned technical problems, this application adopts the following technical solution:

[0007] A battery clamp is provided, including a limiting shell and an elastic connector. Multiple limiting shells are provided, and the inner side of the multiple limiting shells is provided with a receiving cavity formed by the limiting shells for placing a battery shell. The limiting shells are connected to each other by the elastic connector. The elastic connector provides an elastic force to shrink the receiving cavity formed by the limiting shells and to provide a clamping force for the battery shell.

[0008] Furthermore, there are two limiting shells, and the contact surface between the limiting shell and the battery shell is U-shaped. The contact surface of the limiting shell matches the shape of the battery shell, and the two limiting shells are arranged opposite to each other at both ends of the battery shell.

[0009] Furthermore, there are four limiting shells, and the contact surface between the limiting shell and the battery shell is "L"-shaped. The limiting shells are respectively disposed at the four corners of the battery shell.

[0010] Furthermore, both ends of the limiting housing connected to the elastic connector are provided with protrusions, which are used to fix the elastic connector.

[0011] Furthermore, the protrusion is composed of two cylindrical sections with the same axis perpendicular to the end face, and the diameter of the cylinder farther from the end face is larger than that of the cylinder closer to the end face.

[0012] Furthermore, each of the end faces is provided with at least two of the protrusions, and each of the protrusions is connected to the elastic connector, and the protrusions are evenly distributed along the end face.

[0013] Furthermore, the edges of the inner wall of the accommodating cavity are all chamfered.

[0014] Furthermore, both ends of the limiting housing connected to the elastic connector are provided with grooves, and the grooves are used to provide the protrusions.

[0015] Furthermore, along the connection direction between the elastic connector and the protrusion, the depth of the groove is greater than the length of the protrusion.

[0016] Furthermore, the elastic connector is a telescopic spring.

[0017] The beneficial effects of this utility model are as follows: the limiting shell is connected by an elastic connector, which provides clamping force to the limiting shell. Due to the buffering characteristics of the elastic connector, a uniform clamping force is provided to the battery shell in a flexible clamping manner, avoiding excessive local pressure that could cause shell deformation. This effectively solves the problem of uneven clamping force and shell deformation in traditional rigid clamping methods. Furthermore, since the clamping force is provided by the elastic connector, there is no need to set up an additional device to provide clamping force, making the fixture structure simpler, with fewer parts, easier maintenance, and a smaller fixture size for more flexible use. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention. In the drawings:

[0019] Figure 1 This is a diagram showing the usage state of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of this utility model;

[0021] Figure 3 This is a top view of the present invention;

[0022] Figure 4 This is a front view of the present invention;

[0023] Figure 5 This is an enlarged view of the structure at point A of this utility model.

[0024] Wherein: 1-Limiting shell; 11-Protrusion; 12-Chamfer; 13-Groove; 2-Elastic connector; 3-Accommodation cavity. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terminology used in the specification of this application is for the purpose of describing specific embodiments only and is not intended to limit this application.

[0026] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Although this application discloses preferred embodiments as described above, it is not intended to limit the claims. Any person skilled in the art can make several possible changes and modifications without departing from the concept of this application. Therefore, the scope of protection of this application should be determined by the scope defined in the claims of this application.

[0028] Implementation Method 1

[0029] like Figure 1-5As shown, in this embodiment, a battery clamp is provided, including a limiting housing 1 and an elastic connector 2. The limiting housing 1 is used to limit the battery housing. In use, the limiting housing 1 is disposed on the outside of the battery housing and restricts the movement of the battery housing, so that the battery housing is restricted in a certain position and cannot move freely under force, thereby achieving the positioning of the battery housing. Since the free movement of the battery housing is restricted, the battery housing can be kept stable when welding the battery housing to other parts of the battery housing, avoiding shaking during welding and ensuring the welding effect. Multiple limiting housings 1 are provided, and the inner side of the multiple limiting housings 1 is provided with a receiving cavity 3 formed by the limiting housings 1 for placing the battery housing. The shape of the receiving cavity 3 is similar to the shape of the battery housing, so that the battery... When the battery housing is housed within the limiting housing 1, it is appropriately limited in all directions. When the clamping force is applied to the battery housing, the battery housing is subjected to more uniform force and is less prone to deformation. The limiting housings 1 are connected by elastic connectors 2. The elastic connectors 2 provide elastic force to shrink the accommodating cavity 3 formed by the limiting housings 1 and provide clamping force to the battery housing. The elastic force provided by the elastic connectors 2 at different positions should be kept uniform to reduce the deformation of the battery housing caused by uneven clamping force. Since the clamping force provided by the elastic connectors 2 in this application is flexible clamping, compared with rigid clamping, the clamping force will not change abruptly, and the adjustment of the clamping force of the battery housing is more accurate. Moreover, when there is a deviation between the shape of the limiting housing 1 and the battery housing, it can also provide buffering to reduce the deformation of the battery housing.

[0030] Preferably, both ends of the limiting housing 1 and the elastic connector 2 are provided with protrusions 11. The protrusions 11 are used to fix the elastic connector 2. In order to ensure the stability of the elastic connector 2 and prevent the elastic connector 2 from being displaced or falling off during use, the structure of the protrusions 11 can improve the reliability of the connection and ensure the tight fit of the device.

[0031] Preferably, the protrusion 11 is composed of two cylindrical sections with the same axis perpendicular to the end face, and the diameter of the cylinder farther from the end face is larger than that of the cylinder closer to the end face. The protrusion 11 configured in this way can provide stronger fixing force.

[0032] Preferably, each end face is provided with at least two protrusions 11, and each protrusion 11 is connected to an elastic connector 2. The protrusions 11 are evenly distributed along the end face. By evenly distributing multiple protrusions 11 on the end face, the clamping force of the elastic connector 2 can be applied to the battery casing more evenly, avoiding deformation of the battery casing due to excessive force at a single point.

[0033] Preferably, the inner wall of the accommodating cavity 3 is provided with chamfers 12 at the edges. The chamfers 12 can reduce the direct contact between the battery housing and the edge of the accommodating cavity 3 during assembly, avoid scratches or damage to the battery housing by the edge of the fixture, and also guide the movement of the battery housing to ensure the smooth progress of the assembly process.

[0034] Preferably, both ends of the limiting housing 1 and the elastic connector 2 are provided with grooves 13, and the grooves 13 are used to provide protrusions 11. This design can reduce the gap between the limiting housings 1, improve the support of the clamp on the battery housing, and reduce the deformation of the battery housing.

[0035] Preferably, along the connection direction between the elastic connector 2 and the protrusion 11, the depth of the groove 13 is greater than the length of the protrusion 11. When the depth of the groove 13 is greater than the length of the protrusion 11, the protrusion 11 will not protrude from the end face where the gap between the limiting housings 1 is located. Therefore, the protrusion 11 will not affect the size of the gap between the limiting housings 1.

[0036] Preferably, the elastic connector 2 is a telescopic spring. Using a telescopic spring as the elastic connector 2 can improve the stability, impact resistance and adaptability of the connection, while reducing production and maintenance costs.

[0037] In specific usage, a suitable elastic telescopic spring is installed on the protrusion 11 of the limiting housing 1, and adjacent limiting housings 1 are connected. The battery housing is moved downward from the top of the clamp along one end of the limiting housing 1, and the other end of the limiting housing 1 is stretched outward from the clamp to form a suitable accommodating cavity 3. The stretching of the limiting housing 1 is stopped when the battery housing is placed into the clamp. Under the action of the spring's tension, the limiting housing 1 is pressed against the battery housing to achieve positioning of the battery housing. After positioning is completed, the battery housing can be welded.

[0038] Implementation Method 2

[0039] like Figure 2 As shown, in this embodiment, there are two limiting housings 1, and the contact surface between the limiting housing 1 and the battery housing is U-shaped. The contact surface of the limiting housing 1 matches the shape of the battery housing. The two limiting housings 1 are arranged opposite each other and are respectively located at both ends of the battery housing. This is the minimum number of limiting housings 1 in this embodiment. Since the limiting housings 1 are connected by elastic connectors 2, there are gaps between the limiting housings 1. When force is applied to the gaps, the limiting housings 1 will deform. Therefore, the gaps between the limiting housings 1 cannot provide support for the battery housing, and the battery housing is prone to deformation at the gaps. Therefore, in order to provide sufficient support for the battery housing, it is necessary to set fewer limiting housings 1 to reduce the gaps between the limiting housings 1 and provide better support for the battery housing, which can reduce the deformation of the battery housing when clamping it. However, since fewer limiting housings 1 are set, it is necessary to control the shape of the limiting housing 1 to have a small deviation from the shape of the battery housing. The process requirements for the limiting housing 1 are high. In addition, the clamps are not universal with battery housings of different sizes and shapes. Different sizes of clamps are required to correspond to different sizes of battery housings, which increases the cost.

[0040] Implementation Method 3

[0041] In this embodiment, there are four limiting housings 1, and the contact surface between the limiting housing 1 and the battery housing is "L"-shaped. The limiting housings 1 are respectively set at the four corners of the battery housing. Since there are four limiting housings 1, by adjusting the spacing between the limiting housings 1, the fixture of this embodiment can be used for rectangular battery housings of different sizes. Furthermore, since the direction of the tightening force on the limiting housing 1 and the battery housing limiting housing 1 are more likely to adhere to the battery housing and maintain support for the battery housing, the precision requirements for the limiting housing 1 are lower, and the manufacturing cost is reduced.

[0042] In some embodiments, different numbers and shapes of limiting housings 1 can be provided according to different battery shapes to improve the applicability of limiting housings 1 to batteries of different shapes.

[0043] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the present invention's conception through the foregoing teachings or related technical or knowledge. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be protected within the scope of the appended claims.

Claims

1. A battery clamp, characterized by: The utility model provides a battery shell fixing device, including limiting casing (1) and elastic connecting piece (2), limiting casing (1) is provided with multiple, the inside of multiple limiting casing (1) is provided with the accommodation cavity (3) formed by the surrounding of limiting casing (1) for placing battery shell, limiting casing (1) is connected through elastic connecting piece (2), and elastic connecting piece (2) provides elastic force for the accommodation cavity (3) formed by the contraction of limiting casing (1) and provides clamping force for battery shell.

2. The battery clamp of claim 1, wherein: The number of limiting casing (1) is two, and the contact surface of limiting casing (1) and battery shell is "concave" shape, and the contact surface of limiting casing (1) matches the shape of battery shell, and two limiting casings (1) are oppositely arranged and respectively arranged at both ends of battery shell.

3. The battery clamp of claim 1, wherein: The number of limiting casing (1) is four, and the contact surface of limiting casing (1) and battery shell is "L" shape, and limiting casing (1) is respectively arranged at four corners of battery shell.

4. The battery clamp of claim 2 or 3, wherein: The two end surfaces of limiting casing (1) connected with elastic connecting piece (2) are provided with protrusions (11), and the protrusions (11) are used for fixing elastic connecting piece (2).

5. The battery clamp of claim 4, wherein: The protrusions (11) are composed of two cylindrical bodies with the same axis and perpendicular to the end surface, and the diameter of the cylindrical body away from the end surface is larger than that of the cylindrical body close to the end surface.

6. The battery clamp of claim 5, wherein: At least two protrusions (11) are arranged in each end surface, and the protrusions (11) are connected with elastic connecting piece (2), and the protrusions (11) are uniformly distributed along the end surface.

7. The battery clamp of claim 1, wherein: The edge of the inner wall surface of the accommodation cavity (3) is provided with a chamfer (12).

8. The battery clamp of claim 4, wherein: The two ends of limiting casing (1) connected with elastic connecting piece (2) are provided with grooves (13), and the grooves (13) are used for arranging protrusions (11).

9. The battery clamp of claim 8, wherein: The depth of groove (13) is greater than the length of protrusion (11) in the connection direction of elastic connecting piece (2) and protrusion (11).

10. The battery clamp of claim 9, wherein: The elastic connecting piece (2) is a telescopic spring.

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