Battery Tab Fixture

Abstract

The utility model discloses a battery cell pole ear clamp, which relates to the technical field of battery cell production equipment. Among them, the battery cell includes a battery cell body and pole ears respectively connected to both sides of the battery cell body, and the battery cell pole ear clamp includes a regular component, and the regular component includes two strip-shaped clamping grooves, and the two strip-shaped clamping grooves are spaced along the same straight line in the length direction thereof, and are used to clamp the two pole ears on the same straight line. In the technical scheme of the utility model, the pole ears on both sides of the battery cell body are respectively clamped in the two strip-shaped clamping grooves of the regular component. Since the two strip-shaped clamping grooves are distributed along the same straight line, the positions of the two pole ears are regularized on the same straight line, which avoids the offset of the sealing position of the pole ears and the battery cell packaging film, resulting in a loose seal, and improves the reliability of the battery cell packaging.

Description

Technical Field

[0001] The utility model relates to the technical field of battery core production equipment, in particular to a battery core pole ear clamp. Background Art

[0002] The battery cell is the core component of lithium-ion batteries, which determines the battery's capacity, voltage, cycle performance and other performance indicators. The main components of the battery cell include positive electrode sheets, negative electrode sheets, diaphragms and tabs. Among them, the tab is a conductive component that connects the positive and negative electrode sheets to the external circuit. Its shape, size, position, welding quality, etc. directly affect the battery's internal resistance, safety, reliability, etc.

[0003] The processing of the tabs is an important step in the manufacturing process of the battery cell, which usually includes the processes of tab bending, tab packaging, and tab welding. Among them, in the tab bending process, the tabs need to be bent outward to a horizontal position to facilitate tab packaging and tab welding. However, during the tab bending process, the tabs are prone to tilt in the horizontal plane, resulting in the offset of the sealing position between the tabs and the packaging film, making the seal unstable and reducing the reliability of the battery cell packaging. Utility Model Content

[0004] The main purpose of the utility model is to provide a battery cell tab clamp, which can regulate the position of the tab after bending, avoid the offset of the sealing position of the tab and the battery cell packaging film, resulting in a loose seal, thereby improving the reliability of the battery cell packaging.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] A battery cell tab clamp, the battery cell comprising a battery cell body and tabs respectively connected to both sides of the battery cell body, the clamp comprising a aligning component, the aligning component comprising two strip-shaped clamping grooves, the two strip-shaped clamping grooves being spaced apart along the same straight line in their length direction, and being used to clamp the two tabs on the same straight line.

[0007] In some embodiments, the strip-shaped clamping groove is used to clamp the pole tab in the width direction of the pole tab.

[0008] In some embodiments, two opposite groove walls of the strip-shaped clamping groove can move relative to each other in the width direction of the pole lug, and the two groove walls are close to each other to clamp the pole lug.

[0009] In some embodiments, the regulating component includes two first clamping members that are spaced apart and can move relative to each other, and the opposing inner walls of the two first clamping members form the strip-shaped clamping groove.

[0010] In some embodiments, the clamp further includes a mounting seat, and the two first clamping members are slidably connected to the mounting seat.

[0011] In some embodiments, the clamp further includes a driving component, wherein the driving component is connected to at least one of the first clamping members and is used to drive the two first clamping members to move relative to each other.

[0012] In some embodiments, the clamp further includes a clamping assembly disposed on the mounting seat, and the clamping assembly is used to clamp the battery cell body.

[0013] In some embodiments, the clamping assembly includes two second clamping members, the two second clamping members are slidably connected to the mounting seat, and the two second clamping members are close to each other to clamp the battery cell body.

[0014] In some embodiments, the two clamping surfaces of the two second clamping members facing each other are arc surfaces.

[0015] In some embodiments, the driving assembly is connected to at least one of the second clamping members, and one of the first clamping members is correspondingly connected to one of the second clamping members, and the driving assembly is used to drive the second clamping member and the first clamping member to move synchronously.

[0016] In the technical solution of the utility model, the pole ears on both sides of the battery cell body are respectively clamped in two strip-shaped clamping grooves of the regulating component. Since the two strip-shaped clamping grooves are distributed along the same straight line, the positions of the two pole ears are regulated on the same straight line, thereby avoiding the offset of the sealing position of the pole ears and the battery cell packaging film, resulting in a loose seal, and improving the reliability of the battery cell packaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a battery cell and a battery cell tab fixture in one embodiment of the utility model;

[0018] Figure 2 It is a structural schematic diagram of a battery cell tab fixture in one embodiment of the utility model;

[0019] Figure 3 It is a structural schematic diagram of a battery cell tab fixture in another embodiment of the present utility model;

[0020] Figure 4 Schematic diagram of the structure of the second clamping member in one embodiment of the utility model.

[0021] Description of Figure Numbers

[0022] Label name Label name 100 Battery Cell 101 Battery body 102 Tab 200 Battery Tab Fixture 1 Regular components 11 First clamping member 111 Bar clamp slot 2 Mounting Seat 21 Slide rails 22 slider 3 Clamping components 31 Second clamping member 311 Clamping surface 4 Drive components

[0023] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0024] In the present invention, the terms "disposed", "provided with", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The orientation or position relationship indicated by the 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. are based on the orientation or position relationship shown in the drawings and are only for the convenience of describing 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 present application.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0028] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0029] The utility model embodiment provides a battery cell tab fixture, such as Figure 1 As shown, Figure 11 is a top view of the battery cell 100 and the battery cell tab fixture 200 in this embodiment. The battery cell 100 includes a battery cell body 101 and tabs 102 respectively connected to both sides of the battery cell body 101, and the fixture includes a regular component 1, which includes two strip-shaped clamping grooves 111, which are spaced apart along the same straight line in the length direction thereof, and are used to clamp the two tabs 102 on the same straight line.

[0030] In this embodiment, the battery cell 100 may be a wound battery cell 100, and the battery cell body 101 may include a positive electrode sheet, a separator, and a negative electrode sheet. The positive electrode sheet, the separator, and the negative electrode sheet are stacked and wound in sequence to form a wound battery cell body 101. The tabs 102 include a positive tab 102 and a negative tab 102, the positive tab 102 is connected to the positive electrode sheet, the negative tab 102 is connected to the negative electrode sheet, and the two tabs 102 are connected to the two sides of the battery cell body 101 respectively.

[0031] In the production process of the battery cell 100 , the tabs 102 need to be bent outward to a horizontal position. However, the two tabs 102 are easily skewed in the horizontal plane during the bending process, thereby affecting the packaging of the battery cell 100 .

[0032] To this end, the battery cell tab fixture 200 of this embodiment includes a regulating component 1 for regulating the positions of the two tabs 102 to prevent the two tabs 102 from being skewed. Figure 2 As shown, the regulating component 1 includes two strip-shaped clamping grooves 111, and the two strip-shaped clamping grooves 111 are spaced apart along the same straight line in the length direction thereof, and are used to clamp the two pole ears 102 on the same straight line.

[0033] Among them, the two relative groove walls of the strip clamping groove 111 can be fixed, that is, the groove width of the strip clamping groove 111 is fixed. At this time, the groove width is adapted to the width of the pole lug 102, so that the two strip clamping grooves 111 respectively clamp the two pole lugs 102 in the width direction of the pole lug 102. The two relative groove walls of the strip clamping groove 111 can also be movable. The two relative groove walls of the strip clamping groove 111 can move relative to each other in the width direction of the pole lug 102, and the two groove walls approach each other to clamp the pole lug 102. Exemplarily, at least one of the two groove walls of the strip clamping groove 111 is connected to a driving member, such as a cylinder, and the cylinder drives at least one groove wall to move in the width direction of the pole lug 102, so that the two groove walls approach each other, thereby clamping the pole lug 102.

[0034] The two strip-shaped clip grooves 111 are spaced apart, and the distance between the two strip-shaped clip grooves 111 is at least greater than the thickness of the battery cell body 101, so as to avoid interference between the strip-shaped clip grooves 111 and the battery cell body 101. The distance between the two strip-shaped clip grooves 111 can be fixed or movable. For example, the two strip-shaped clip grooves 111 can be close to each other along the length direction of the strip-shaped clip grooves 111, so that the pole ears 102 located on both sides of the battery cell body 101 are respectively inserted into the two strip-shaped clip grooves 111, thereby aligning the positions of the two pole ears 102 on the same straight line.

[0035] It can be seen from the above that in the battery cell tab clamp 200 of the embodiment of the utility model, the two strip-shaped clamping grooves 111 of the regulating component 1 are distributed along the same straight line, so that the positions of the two tabs 102 are regulated on the same straight line, avoiding the offset of the sealing position of the tab 102 and the packaging film of the battery cell 100, resulting in a loose seal, and improving the reliability of the packaging of the battery cell 100.

[0036] Figure 2 It is a schematic diagram of the structure of the battery cell tab fixture 200.

[0037] In some embodiments, Figure 2 As shown, the aligning component 1 includes two first clamping members 11 which are spaced apart and can move relative to each other, and the inner walls of the two first clamping members 11 facing each other form a strip-shaped clamping groove 111 .

[0038] In this embodiment, the two first clamping members 11 are arranged at intervals to form a strip clamping groove 111 for clamping the pole lug 102. The two opposite inner wall surfaces of the strip clamping groove 111 are flat surfaces, so that the pole lug 102 is clamped between the two inner wall surfaces more stably, thereby improving the alignment accuracy of the clamp. The two first clamping members 11 can move relative to each other in the width direction of the pole lug 102. Exemplarily, at least one first clamping member 11 is connected to a driving member, which can be a cylinder, and the cylinder drives at least one first clamping member 11 to move in the width direction of the pole lug 102, so that the two first clamping members 11 are close to each other, thereby clamping the pole lug 102.

[0039] In some embodiments, the clamp further includes a mounting seat 2 , and the two first clamping members 11 are slidably connected to the mounting seat 2 .

[0040] like Figure 2 As shown, the mounting seat 2 of this embodiment is used to mount the first clamping member 11. The two first clamping members 11 are slidably connected to the mounting seat 2. Exemplarily, the two first clamping members 11 are mounted on the mounting seat 2 through the slide rail 21 and the slider 22, and the two clamping members can approach each other along the slide rail 21, thereby clamping the tab 102.

[0041] In some embodiments, the clamp further includes a driving assembly 4 , which is connected to at least one first clamping member 11 and is used to drive the two first clamping members 11 to move relative to each other.

[0042] The driving assembly 4 of this embodiment is used to drive the two first clamping members 11 to move closer to or away from each other. Specifically, the driving assembly 4 can be a cylinder to drive the first clamping members 11 to move linearly. The driving assembly 4 is installed on the mounting seat 2, and the driving end of the driving assembly 4 can be connected to one of the first clamping members 11 to drive one of the first clamping members 11 to move toward or away from the other first clamping member 11; the driving end of the driving assembly 4 can also be connected to the two first clamping members 11 at the same time, so as to drive the two first clamping members 11 to move closer to or away from each other at the same time.

[0043] In some embodiments, the clamp further includes a clamping assembly 3 disposed on the mounting seat 2 , and the clamping assembly 3 is used to clamp the battery cell body 101 .

[0044] In this embodiment, before the position of the tab 102 is calibrated, the battery cell body 101 needs to be positioned and clamped. To this end, the battery cell tab clamp 200 of this embodiment also includes a clamping assembly 3 for clamping and positioning the battery cell body 101. Specifically, the clamping assembly 3 includes two second clamping members 31, and the two second clamping members 31 are slidably connected to the mounting seat 2. The two second clamping members 31 are close to each other to clamp the battery cell body 101. For example, Figure 3 As shown, the mounting seat 2 is provided with a slide rail 21, the extension direction of the slide rail 21 is perpendicular to the length direction of the strip-shaped clamping groove 111, a slider 22 is installed on the slide rail 21, and the second clamping member 31 is connected to the slider 22. The two second clamping members 31 are close to each other along the slide rail 21 to clamp the battery body 101 in place.

[0045] In some embodiments, Figure 4 As shown, the two clamping surfaces 311 of the two second clamping members 31 facing each other are arc surfaces.

[0046] In this embodiment, the outer peripheral surface of the wound battery cell 100 is an arc surface. To this end, the clamping surface 311 of the second clamping member 31 in this embodiment is set as an arc surface, so that the clamping surface 311 of the second clamping member 31 is adapted to the outer peripheral surface of the battery cell body 101, increasing the contact area of ​​the second clamping member 31 based on the battery cell body 101, thereby improving the stability of the clamping.

[0047] In some embodiments, the second clamping member 31 driving component 4 is connected to at least one second clamping member 31 , and one first clamping member 11 is correspondingly connected to one second clamping member 31 , and the driving component 4 is used to drive the second clamping member 31 and the first clamping member 11 to move synchronously.

[0048] In this embodiment, the first clamping member 11 and the second clamping member 31 can move synchronously to synchronously clamp the tab 102 and the battery cell body 101. Figure 3 As shown, the driving end of the driving component 4 is connected to at least one second clamping member 31, and the second clamping member 31 is installed on the slide rail 21 of the mounting seat 2 through the slider 22, and the first clamping member 11 is connected to the second clamping member 31. In this way, when the driving component 4 drives the second clamping member 31 to move, it drives the first clamping member 11 to move, thereby realizing the synchronous movement of the first clamping member 11 and the second clamping member 31.

[0049] The above is only a specific implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A battery cell tab fixture, wherein the battery cell comprises a battery cell body and tabs respectively connected to both sides of the battery cell body, characterized in that: The clamp comprises a aligning component, and the aligning component comprises two strip-shaped clamping grooves, and the two strip-shaped clamping grooves are spaced apart and distributed along the same straight line in the length direction thereof, and are used for clamping the two pole tabs on the same straight line.

2. The battery cell tab fixture according to claim 1, characterized in that: The strip-shaped clamping groove is used to clamp the pole lug in the width direction of the pole lug.

3. The battery cell tab fixture according to claim 2, characterized in that: The two opposite groove walls of the strip-shaped clamping groove can move relative to each other in the width direction of the pole lug, and the two groove walls are close to each other to clamp the pole lug.

4. The battery cell tab fixture according to claim 1, characterized in that: The regulating component comprises two first clamping members which are arranged at intervals and can move relative to each other, and the inner walls facing each other of the two first clamping members form the strip-shaped clamping groove.

5. The battery cell tab fixture according to claim 4, characterized in that: The clamp further comprises a mounting seat, and the two first clamping members are slidably connected to the mounting seat.

6. The battery cell tab fixture according to claim 5, characterized in that: The clamp further comprises a driving assembly, wherein the driving assembly is connected to at least one of the first clamping members and is used for driving two of the first clamping members to move relative to each other.

7. The battery cell tab fixture according to claim 6, characterized in that: The clamp also includes a clamping assembly disposed on the mounting seat, and the clamping assembly is used to clamp the battery core body.

8. The battery cell tab fixture according to claim 7, characterized in that: The clamping assembly includes two second clamping members, the two second clamping members are slidably connected to the mounting seat, and the two second clamping members are close to each other to clamp the battery core body.

9. The battery cell tab fixture according to claim 8, characterized in that: The two clamping surfaces of the two second clamping members facing each other are arc surfaces.

10. The battery cell tab fixture according to claim 8, characterized in that: The driving assembly is connected to at least one of the second clamping members, and one of the first clamping members is correspondingly connected to one of the second clamping members. The driving assembly is used to drive the second clamping member and the first clamping member to move synchronously.

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