Battery welding clamp and battery production system

Abstract

The utility model discloses a battery welding clamp and a battery production system. The battery welding clamp comprises a supporting piece which comprises a first supporting part and a second supporting part, the first supporting part is located on one side of the second supporting part, the first supporting part is used for supporting an electrode assembly of a battery, and the second supporting part is used for supporting a tab of the battery; the first pressing device and the supporting piece are arranged in a spaced mode, and the first pressing device is used for pressing the electrode assembly to the first supporting part; and the second pressing device and the first pressing device are located on the same side of the supporting piece, the second pressing device and the supporting piece are arranged in a spaced mode in the first direction, the second pressing device is used for pressing the tab to the second supporting part, and the interval direction between the first pressing device and the supporting piece is the same as the first direction. The first pressing device firstly presses the electrode assembly on the first supporting part so as to reduce the gap between the electrode pieces of the electrode assembly, and then the second pressing device presses the tabs on the second supporting part, so that the multiple layers of tabs are arranged more tightly so as to reduce the redundancy of the tabs.

Description

Technical Field

[0001] The present application relates to a welding tool, and more particularly to a battery welding fixture and a battery production system. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] After welding, the tabs of the electrode assembly of the battery are prone to tab redundancy, which can easily cause the tabs to bend. The bent tabs make it easy for the tabs to be inserted into the pole pieces of the electrode assembly and cause a short circuit. Utility Model Content

[0004] In view of the above problems, the present application provides a battery welding fixture and a battery production system, which can improve the redundancy after the tab welding to reduce the risk of short circuit in the battery.

[0005] The first aspect of the present application provides a battery welding fixture, comprising:

[0006] A support member, comprising a first support portion and a second support portion, wherein the first support portion is located on one side of the second support portion, the first support portion is used to support the electrode assembly of the battery, and the second support portion is used to support the tab of the battery;

[0007] A first pressing device is arranged at a distance from the support member, and the first pressing device is used to press the electrode assembly to the first support portion;

[0008] The second clamping device is located on the same side of the support member as the first clamping device, and is spaced apart from the support member along the first direction. The second clamping device is used to clamp the tab to the second support portion, and the spacing direction between the first clamping device and the support member is the same as the first direction.

[0009] Before welding, the first clamping device first presses the electrode assembly onto the first support portion to reduce the gap between the pole pieces of the electrode assembly, and then the pole ear is pressed onto the second support portion by the second clamping device, so that the multi-layer pole ears can be arranged more closely, and then the multi-layer pole ears are welded using welding equipment to reduce the redundancy of the pole ears, thereby reducing the risk of the pole ears bending and causing a short circuit in the battery.

[0010] In some embodiments, the first pressing device comprises:

[0011] A first pressing assembly is spaced apart from the support member;

[0012] The first driving mechanism is drivingly connected to the first clamping assembly and is used to drive the first clamping assembly to clamp the electrode assembly onto the first supporting portion.

[0013] The first driving mechanism drives the first pressing assembly to press the electrode assembly, which can save manpower compared to manually operating the first pressing assembly.

[0014] In some embodiments, the first clamping assembly includes:

[0015] a first pressing member;

[0016] A first connecting member is disposed on a side of the first pressing member away from the supporting member, the first pressing member is connected to the first driving mechanism through the first connecting member, and the first pressing member can move relative to the first connecting member along the first direction;

[0017] A buffer member, one end of the buffer member abuts against the first pressing member, and the other end of the buffer member abuts against the first connecting member.

[0018] The first driving mechanism drives the first connecting member to press the first pressing member onto the electrode lug, and the buffer member can buffer the driving force from the first driving mechanism to reduce damage to the electrode assembly.

[0019] In some embodiments, the first clamping assembly further includes a guide member, the first connecting member is connected to the guide member, and the guide member is slidably connected to the first connecting member along a first direction.

[0020] Through the guidance of the guide member, the force of the first pressing member pressing on the electrode assembly can be made more uniform.

[0021] In some embodiments, the second pressing device comprises:

[0022] A second pressing member is spaced apart from the supporting member along the first direction;

[0023] The second driving mechanism is drivingly connected to the second pressing member, and the second driving mechanism is used to drive the second pressing member to press the tab onto the second supporting portion.

[0024] The second pressing member is driven by the second driving mechanism to press the tab, which can save more manpower.

[0025] In some embodiments, the first pressing device comprises:

[0026] a first clamping assembly;

[0027] A first driving mechanism is drivingly connected to the first pressing assembly and the second driving mechanism, and is used to drive the first pressing assembly and the second driving mechanism to move along a first direction;

[0028] The end of the first clamping assembly facing the support member is the first end, and the end of the second clamping assembly facing the support member is the second end. When the first clamping assembly and the second clamping assembly are in a loosened state, the distance between the first end and the top of the support member is smaller than the distance between the second end and the top of the support member. The top of the support member is the end of the support member facing the first clamping assembly.

[0029] The first driving mechanism drives the first clamping assembly and the second driving mechanism to move toward the support member at the same time. When the first clamping assembly presses the electrode assembly onto the first supporting portion, the second driving mechanism drives the second clamping assembly to move toward the support member and presses the electrode tab onto the second supporting portion, so as to first clamp the electrode assembly and then clamp the electrode sheet, so as to reduce the redundancy of the electrode tab during welding. At the same time, the second clamping device is driven by the first clamping assembly to make the structure more compact.

[0030] In some embodiments, the second clamping member includes a main body portion and an abutment portion, the main body portion is connected to the abutment portion at one end facing the support member, and along the direction from the first support portion to the second support portion, two ends of the main body portion form two first side surfaces, and the abutment portion is spaced apart from at least one first side surface.

[0031] The abutting portion is spaced apart from at least one first side surface, so that when the tab is pressed, there is a certain amount of redundancy, thereby reducing the probability of the tab being broken when pressed.

[0032] In some embodiments, the number of the first supporting portions is two, and the two first supporting portions are located on opposite sides of the second supporting portion.

[0033] Thus, the two electrode assemblies can be arranged on the two first supporting parts, and the electrode tabs of the two electrode assemblies can be arranged on the same second supporting part, and the electrode tabs of the two electrode assemblies can be pressed and fixed at the same time.

[0034] In some embodiments, the battery welding fixture further comprises:

[0035] The first clamping assembly includes two first clamping members, which are arranged on both sides of the first support portion along the second direction. At least one first clamping member can move relative to the first support portion along the second direction. The two first clamping members are used to jointly clamp the electrode assembly along the second direction, and the second direction is perpendicular to the first direction.

[0036] The first clamping assembly and the second clamping assembly can limit the position of the electrode assembly along the second direction, so as to improve the accuracy of the welding position of the electrode assembly during welding.

[0037] In some embodiments, the battery welding fixture further comprises:

[0038] The second clamping assembly includes two second clamping members, which are arranged on both sides of the first support part along a third direction. At least one second clamping member can move relative to the first support part. The two second clamping members are used to jointly clamp the electrode assembly along a third direction. The third direction is perpendicular to the first direction and is arranged at an angle to the second direction.

[0039] The first clamping assembly and the second clamping assembly can limit the position of the electrode assembly along the third direction, so as to improve the accuracy of the welding position of the electrode assembly during welding.

[0040] A second aspect of the present application provides a battery production system, comprising the battery welding fixture of the first aspect.

[0041] Since the battery production system includes all the technical features of the battery welding fixture of the first aspect, the effects are the same as those described above and will not be repeated here.

[0042] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 Schematically shows an exploded view of a battery welding fixture according to some embodiments of the present application;

[0044] Figure 2 Schematically shows an axonometric view of a battery welding fixture according to some embodiments of the present application;

[0045] Figure 3 Schematically showing an axonometric view of a second pressing member in a battery welding fixture according to some embodiments of the present application;

[0046] Figure 4 for Figure 3 A front view of

[0047] Figure 5 An axonometric diagram schematically illustrates the connection relationship between the first clamping device and the second clamping device in some embodiments of the present application.

[0048] The reference numerals are as follows:

[0049] 10. Support member; 11. First support portion; 12. Second support portion; 20. First clamping device; 21. First clamping assembly; 211. First clamping member; 212. First connecting member; 213. Buffer member; 214. Guide member; 22. First driving mechanism; 23. First mounting plate; 24. Second mounting plate; 30. Second clamping device; 31. Second clamping member; 311. Main body; 3111. First side surface; 312. Abutting portion;

[0050] 32. second driving mechanism; 41. first clamping member; 51. second clamping member; 52. fourth driving mechanism;

[0051] X, first direction; Y, second direction; Z, third direction;

[0052] 100, electrode assembly; 101, main body; 102, tab. DETAILED DESCRIPTION

[0053] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0055] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0056] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0057] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0058] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0059] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0060] The electrode assembly is the part of the battery where the electrochemical reaction occurs. The battery housing may contain one or more electrode assemblies. The electrode assembly is mainly formed by winding or stacking the positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The parts of the positive and negative electrode sheets with active materials constitute the main body of the electrode assembly, and the parts of the positive and negative electrode sheets without active materials each constitute a tab. The tab has multiple layers. When welding the multiple tabs, it is easy to have a large amount of tab redundancy, which makes the tab easy to bend and insert into the tab to cause a short circuit.

[0061] In view of this, the present application provides a battery welding fixture. Before welding, a first clamping device first presses the electrode assembly onto a first support portion to reduce the gap between the pole pieces of the electrode assembly so that the multi-layer pole ears can extend longer. The pole ears are then pressed onto the second support portion by a second clamping device to arrange the multi-layer pole ears more closely. The multi-layer pole ears are then welded using welding equipment to reduce the redundancy of the pole ears, thereby reducing the risk of the pole ears bending and causing a short circuit in the battery.

[0062] The battery welding fixture of the present application is used for welding electrodes having a double-electrode assembly and a single-electrode assembly.

[0063] The following examples are for convenience of description. Figure 1-Figure 5 , a battery welding fixture of the present application is used as an example for explanation.

[0064] Please refer to Figure 1 and Figure 2 The battery welding fixture includes a support member 10, a first clamping device 20 and a second clamping device 30. The support member 10 includes a first support portion 11 and a second support portion 12. The first support portion 11 is located on one side of the second support portion 12. The first support portion 11 is used to support the electrode assembly 100 of the battery, and the second support portion 12 is used to support the tab 102 of the battery. The first clamping device 20 is spaced apart from the support member 10, and the first clamping device 20 is used to clamp the electrode assembly 100 to the first support portion 11. The second clamping device 30 is located on the same side of the support member 10 as the first clamping device 20, and the second clamping device 30 is spaced apart from the support member 10 along the first direction X. The second clamping device 30 is used to clamp the tab 102 to the second support portion 12, and the spacing direction between the first clamping device 20 and the support member 10 is the same as the first direction X.

[0065] Optionally, the first support portion 11 and the second support portion 12 may be integrally formed, or may be connected by riveting, welding, or screws.

[0066] Optionally, the first support portion 11 and the second support portion 12 may be, but are not limited to, plate-shaped structures. Figure 1 It is shown that the first support portion 11 and the second support portion 12 are generally plate-like structures, wherein the first support portion 11 and the second support portion 12 of the support member 10 respectively form support surfaces facing the surface of the first clamping device 20, the support surface of the first support portion 11 is used to support the electrode assembly 100, and the support surface of the second support portion 12 is used to support the pole ear 102, and the first direction X is generally perpendicular to the support surface.

[0067] Before welding, the first clamping device 20 first presses the electrode assembly 100 onto the first support portion 11 to reduce the gap between the pole pieces of the main body 101, and then presses the pole ear 102 onto the second support portion 12 through the second clamping device 30, so that the multi-layer pole ear 102 can be arranged more closely, and then the multi-layer pole ear 102 is welded using welding equipment to reduce the redundancy of the pole ear 102, thereby reducing the risk of the pole ear 102 bending and causing a short circuit in the battery.

[0068] In some embodiments, please refer to Figure 1 The first pressing device 20 includes a first pressing assembly 21 and a first driving mechanism 22. The first driving mechanism 22 is drivingly connected to the first pressing assembly 21, and is used to drive the first pressing assembly 21 to press the electrode assembly 100 onto the first supporting portion 11.

[0069] Optionally, the first driving mechanism 22 includes but is not limited to linear driving components such as a cylinder, a push rod or a hydraulic push rod.

[0070] The first driving mechanism 22 drives the first pressing assembly 21 to press the electrode assembly 100 , which can save manpower compared to manually operating the first pressing assembly 21 .

[0071] In some embodiments, please refer to Figure 1 The first pressing assembly 21 includes a first pressing member 211, a first connecting member 212 and a buffer member 213. The first connecting member 212 is disposed on a side of the first pressing member 211 away from the supporting member 10, the first pressing member 211 is connected to the first driving mechanism 22 through the first connecting member 212, and the first pressing member 211 can move relative to the first connecting member 212 along the first direction X. One end of the buffer member 213 abuts against the first pressing member 211, and the other end of the buffer member 213 abuts against the first connecting member 212.

[0072] Optionally, the buffer member 213 may be, but is not limited to, a spring or an elastic block (rubber or polyurethane block, etc.).

[0073] The first driving mechanism 22 drives the first connecting member 212 to press the first pressing member 211 onto the electrode tab 102 . The buffer member 213 can buffer the driving force from the first driving mechanism 22 to reduce damage to the electrode assembly 100 .

[0074] In some embodiments, the first clamping assembly 21 further includes a guide member 214, the first connecting member 212 is connected to the guide member 214, and the guide member 214 is slidably connected to the first connecting member 212 along the first direction X.

[0075] Figure 1 It is shown that the first connecting member 212 and the first pressing member 211 are both plate-shaped structures, the guide member 214 is a guide rod, the buffer member 213 is a compression spring, the compression spring is sleeved on the guide rod, one end of the guide rod is connected to the first pressing member 211, the axial direction of the guide rod is the same as the first direction X, and the first connecting member 212 is slidably connected to the guide rod. In other examples, the guide rod can also be replaced by a guide rail.

[0076] In some embodiments, please refer to Figure 1 The second pressing device 30 includes a second pressing member 31 and a second driving mechanism 32. The second pressing member 31 is spaced apart from the support member 10 along the first direction X. The second driving mechanism 32 is drivingly connected to the second pressing member 31, and the second driving mechanism 32 is used to drive the second pressing member 31 to press the tab 102 against the second support portion 12.

[0077] Optionally, the second driving mechanism 32 includes but is not limited to linear driving components such as a cylinder, a push rod or a hydraulic push rod.

[0078] The second pressing member 31 is driven by the second driving mechanism 32 to press the tab 102 , which can save more manpower.

[0079] In some embodiments, please refer to Figure 5 , the first clamping device 20 includes a first clamping assembly 21 and a first driving mechanism 22. The first clamping assembly 21 and the second driving mechanism 32 are respectively connected to the first driving mechanism 22, and the first driving mechanism 22 is used to drive the first clamping assembly 21 and the second driving mechanism 32 to move along the first direction X. The end of the first clamping assembly 21 facing the support member 10 is the first end, and the end of the second clamping assembly 31 facing the support member 10 is the second end. When the first clamping assembly 21 and the second clamping device 30 are in a loosened state, the distance between the first end and the top of the support member 10 is smaller than the distance between the second end and the top of the support member 10. The top of the support member 10 is the end of the support member 10 facing the first clamping assembly 21.

[0080] Exemplarily, the first driving mechanism 22 and the second driving mechanism 32 are both cylinders, and the first clamping device 20 also includes a first mounting plate 23 and a second mounting plate 24. The first driving mechanism 22 is installed on the first mounting plate 23. The first mounting plate 23 is provided with two parallel guide rails, and the length direction of the two guide rails is the same as the first direction X. The second mounting plate 24 is slidably connected to the guide rails through a slider, and the second mounting plate 24 is drivingly connected to the driving end of the first driving mechanism 22 so that the second mounting plate 24 can move along the first direction X. The second mounting plate 24 is installed with a second driving mechanism 32 and a first connecting member 212.

[0081] The first driving mechanism 22 drives the first clamping assembly 21 and the second driving mechanism 32 to move toward the support member 10 at the same time. When the first clamping member 211 presses the electrode assembly 100 onto the first support portion 11, the second driving mechanism 32 drives the second clamping member 31 to move toward the support member 10 and presses the pole ear 102 onto the second support portion 12, so as to first clamp the electrode assembly 100 and then clamp the pole piece, so as to reduce the redundancy of the pole ear 102 during welding; at the same time, the second clamping device 30 is driven by the first clamping assembly 21, which can make the structure more compact.

[0082] In some embodiments, please refer to Figure 3 and Figure 4 The second clamping member 31 includes a main body portion 311 and an abutment portion 312. The abutment portion 312 is connected to one end of the main body portion 311 toward the support member 10. Along the direction from the first support portion 11 to the second support portion 12, two first side surfaces 3111 are formed at both ends of the main body portion 311. The abutment portion 312 is spaced apart from at least one first side surface 3111.

[0083] The abutting surface of the abutting portion 312 (the end surface facing the support member 10 ) can be set to a desired shape according to the area of ​​the pressed tab 102 , for example, the abutting surface can be square, circular or other special-shaped structures.

[0084] The number of the abutting portion 312 may be one or more.

[0085] The abutting portion 312 is spaced apart from at least one first side surface 3111 , so that when the tab 102 is compressed, there is a certain amount of redundancy, thereby reducing the probability of the tab 102 being broken when compressed.

[0086] In some embodiments, please refer to Figure 1 There are two first support portions 11 , and the two first support portions 11 are located on opposite sides of the second support portion 12 .

[0087] Thus, the two electrode assemblies 100 can be arranged on the two first support parts 11, and the tabs 102 of the two electrode assemblies 100 can be arranged on the same second support part 12, and the tabs 102 of the two electrode assemblies 100 can be pressed and fixed at the same time to improve the welding efficiency of the tabs.

[0088] In some embodiments, the battery welding fixture further includes a first clamping assembly, wherein the first clamping assembly includes two first clamping members 41, the two first clamping members 41 are arranged on both sides of the first support portion 11 along the second direction Y, at least one first clamping member 41 can move relative to the first support portion 11 along the second direction Y, and the two first clamping members 41 are used to clamp the electrode assembly 100 together along the second direction Y, and the second direction Y is perpendicular to the first direction X.

[0089] Optionally, the first clamping assembly further includes a third driving mechanism, and at least one of the two first clamping members 41 is driven by the third driving mechanism. The third driving mechanism is mounted on the first support portion 11. Optionally, the third driving mechanism may be, but is not limited to, a linear motion component such as a cylinder, an electric push rod, or a hydraulic push rod.

[0090] Optionally, a linear guide rail may be installed on the side of the first support portion 11 away from the first clamping device 20, and two sliders are installed on the linear guide rail, wherein each first clamping member 41 is connected to each slider. Each first clamping member 41 may be driven by a cylinder alone, or only one of the first clamping members 41 may be driven by a cylinder.

[0091] The first clamping assembly can limit the position of the electrode assembly 100 along the second direction Y, so as to improve the accuracy of the welding position of the electrode assembly 100 during welding.

[0092] Optionally, at least one of the two first clamping members 41 is driven by a third driving component to achieve clamping and releasing actions of the first clamping member 41 .

[0093] In some embodiments, please refer to Figure 1 The battery welding fixture further includes a second clamping assembly. The second clamping assembly includes two second clamping members 51, which are arranged on both sides of the first support portion 11 along the third direction Z. At least one second clamping member 51 can move relative to the first support portion 11. The two second clamping members 51 are used to clamp the electrode assembly 100 together along the third direction Z. The third direction Z is perpendicular to the first direction X, and the third direction Z is arranged at an angle to the second direction Y.

[0094] Optionally, the second clamping assembly further includes a fourth driving mechanism, and at least one of the two second clamping members 51 is driven by the fourth driving member to achieve clamping and releasing actions of the second clamping members 51 .

[0095] Optionally, the second direction Y is perpendicular to the third direction Z.

[0096] The second clamping assembly can limit the position of the electrode assembly 100 along the third direction Z, so as to improve the accuracy of the welding position of the electrode assembly 100 during welding.

[0097] For the convenience of description, the following embodiments are described by taking a battery production system of the present application as an example.

[0098] The battery production system includes the battery welding jig of the above-mentioned embodiment.

[0099] Since the battery production system includes all the technical features of the battery welding fixture of the first aspect, the effects are the same as those described above and will not be repeated here.

[0100] In an optional embodiment of the battery welding fixture, please refer to Figure 1-Figure 5The battery welding fixture includes a support member 10, a first clamping device 20 and a second clamping device 30. The support member 10 includes a first support portion 11 and a second support portion 12, the first support portion 11 is located on one side of the second support portion 12, the first support portion 11 is used to support the electrode assembly 100 of the battery, and the second support portion 12 is used to support the pole ear 102 of the battery. The first clamping device 20 is spaced apart from the support member 10, and the first clamping device 20 is used to clamp the electrode assembly 100 to the first support portion 11. The first clamping device 20 includes a first clamping assembly 21, a first driving mechanism 22, a first mounting plate 23 and a second mounting plate 24. The first driving mechanism 22 is drivingly connected to the first clamping assembly 21. The first clamping assembly 21 includes a first clamping member 211, a first connecting member 212 and a buffer member 213. The first connecting member 212 is arranged on the side of the first clamping member 211 away from the support member 10, and the first clamping member 211 is connected to the first driving mechanism 22 through the first connecting member 212, and the first clamping member 211 can move relative to the first connecting member 212 along the first direction X. One end of the buffer 213 abuts against the first clamping member 211, and the other end of the buffer 213 abuts against the first connecting member 212. The buffer 213 is a compression spring, and the compression spring is sleeved on the guide rod. The second clamping device 30 is located on the same side of the support member 10 as the first clamping device 20, and the second clamping device 30 is spaced apart from the support member 10 along the first direction X. The second clamping device 30 is used to clamp the pole ear 102 to the second support portion 12, and the spacing direction between the first clamping device 20 and the support member 10 is the same as the first direction X. The second clamping device 30 includes a second clamping member 31 and a second driving mechanism 32. The second driving mechanism 32 is connected to the second clamping member 31 by driving, and the second driving mechanism 32 is used to drive the second clamping member 31 to clamp the pole ear 102 to the second support portion 12. The first clamping assembly 21 and the second driving mechanism 32 are connected to the first driving mechanism 22 by driving. Specifically, the first driving mechanism 22 is mounted on the first mounting plate 23, and the first mounting plate 23 is provided with two parallel guide rails, and the length direction of the two guide rails is the same as the first direction X. The second mounting plate 24 is connected to the guide rails by sliding blocks, and the second mounting plate 24 is connected to the driving end of the first driving mechanism 22 by driving. The second mounting plate 24 is installed with the second driving mechanism 32 and the first connecting member 212, so that the first clamping device 20 and the second clamping device 30 can move toward the support member 10 at the same time under the drive of the first driving mechanism 22. The number of the first support portions 11 is two, and the two first support portions 11 are located on opposite sides of the second support portion 12, so as to be able to fix the battery with a dual-electrode assembly.The end of the first clamping assembly 21 facing the support member 10 is the first end, and the end of the second clamping assembly 31 facing the support member 10 is the second end. When the first clamping assembly 21 and the second clamping assembly 30 are in a loosened state, the distance between the first end and the top of the support member 10 is smaller than the distance between the second end and the top of the support member 10. The top of the support member 10 is the end of the support member 10 facing the first clamping assembly 21.

[0101] The first driving mechanism 22 drives the first clamping assembly 21 and the second clamping device 30 to move toward the support member 10 at the same time. The distance between the first end and the top of the support member 10 is greater than the distance between the second end and the top of the support member 10, so that the first clamping member 211 can first clamp the electrode assembly 100, and then the second clamping member 31 can clamp and fix the pole ear 102 through the action of the second driving mechanism 32, so as to reduce the probability of short circuit caused by excessive redundancy when welding the pole ear 102; at the same time, the first driving mechanism 22 drives the first clamping assembly 21 and the second clamping device 30 to move toward the support member 10 at the same time, which can also make the structure more compact.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery welding fixture, characterized in that: include: A support member, comprising a first support portion and a second support portion, wherein the first support portion is located on one side of the second support portion, the first support portion is used to support an electrode assembly of a battery, and the second support portion is used to support a tab of the battery; a first pressing device, spaced apart from the support member, the first pressing device being used to press the electrode assembly against the first support portion; The second clamping device is located on the same side of the support member as the first clamping device, and is spaced apart from the support member along the first direction. The second clamping device is used to clamp the tab to the second support portion, and the spacing direction between the first clamping device and the support member is the same as the first direction.

2. The battery welding fixture according to claim 1, characterized in that: The first pressing device comprises: a first clamping assembly; The first driving mechanism is drivingly connected to the first clamping assembly and is used to drive the first clamping assembly to press the electrode assembly onto the first supporting portion.

3. The battery welding fixture according to claim 2, characterized in that: The first pressing assembly comprises: a first pressing member; a first connecting member, disposed on a side of the first pressing member away from the supporting member, the first pressing member being connected to the first driving mechanism via the first connecting member, and the first pressing member being able to move relative to the first connecting member along the first direction; A buffer member, one end of which abuts against the first pressing member, and the other end of which abuts against the first connecting member.

4. The battery welding fixture according to claim 3, characterized in that: The first clamping assembly also includes a guide member, the first connecting member is connected to the guide member, and the guide member is slidably connected to the first connecting member along the first direction.

5. The battery welding fixture according to claim 1, characterized in that: The second pressing device comprises: A second pressing member, spaced apart from the supporting member along the first direction; The second driving mechanism is drivingly connected to the second pressing member and is used to drive the second pressing member to press the tab against the second supporting portion.

6. The battery welding fixture according to claim 5, characterized in that: The first pressing device comprises: A first pressing assembly is spaced apart from the support member; A first driving mechanism, drivingly connected to the first pressing assembly and the second driving mechanism, and used to drive the first pressing assembly and the second driving mechanism to move along the first direction; The end of the first clamping assembly facing the support member is the first end, and the end of the second clamping assembly facing the support member is the second end. When the first clamping assembly and the second clamping assembly do not clamp the battery, the distance between the first end and the top of the support member is smaller than the distance between the second end and the top of the support member. The top of the support member is the end of the support member facing the first clamping assembly.

7. The battery welding fixture according to claim 5, characterized in that: The second clamping member includes a main body and an abutment portion, wherein the abutment portion is connected to one end of the main body toward the support member, and along the direction from the first support portion to the second support portion, two ends of the main body form two first side surfaces, and the abutment portion is spaced apart from at least one of the first side surfaces.

8. The battery welding fixture according to any one of claims 1 to 7, characterized in that: The number of the first supporting parts is two, and the two first supporting parts are located at two opposite sides of the second supporting part.

9. The battery welding fixture according to any one of claims 1 to 7, characterized in that: The battery welding fixture also includes: The first clamping assembly includes two first clamping members, which are arranged on both sides of the first support portion along the second direction, at least one of the first clamping members can move relative to the first support portion along the second direction, and the two first clamping members are used to jointly clamp the electrode assembly along the second direction, and the second direction is perpendicular to the first direction.

10. The battery welding fixture according to claim 9, characterized in that: The battery welding fixture also includes: The second clamping assembly includes two second clamping members, which are arranged on both sides of the first support part along a third direction, at least one of the second clamping members can move relative to the first support part, and the two second clamping members are used to jointly clamp the electrode assembly along the third direction, the third direction is perpendicular to the first direction, and the third direction is arranged at an angle with the second direction.

11. A battery production system, characterized in that: Comprising a battery welding fixture as described in any one of claims 1-10.

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