Ultrasonic welding device for new energy battery pack

Abstract

The utility model discloses a new energy battery pack ultrasonic welding device which comprises an ultrasonic welding machine body and a welding head and further comprises a supporting device and a limiting device, the supporting device is arranged on one side of the ultrasonic welding machine body and located at the bottom of the welding head, and the limiting device is movably arranged on the supporting device. The limiting device comprises a fixed bottom plate, a limiting rod, a supporting block, a limiting block, an adjusting mechanism and a battery piece positioning mechanism, the limiting rod is arranged at one end of the fixed bottom plate, one end of the limiting rod penetrates through the supporting device and is connected with the supporting block, the limiting block used for supporting a tab is arranged at the upper end of the supporting block, and the adjusting mechanism is arranged at the lower end of the fixed bottom plate; and a battery piece positioning mechanism is arranged at the upper end of the fixed bottom plate. Through the arrangement of the fixed bottom plate, the limiting rod, the supporting block, the limiting block and the adjusting mechanism, the position of the tab on the top of the supporting cushion block can be adjusted, and the situation that the quality of a battery pack is affected due to the fact that the position of a tab welding spot is too close to or too far away from a battery piece due to misoperation of an operator is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic welding, in particular to an ultrasonic welding device for a new energy battery pack. Background Art

[0002] Power batteries are power sources for tools, mostly referring to storage batteries that power electric vehicles, electric trains, electric bicycles, and golf carts. Power batteries are the core components of new energy vehicles and an important direction for future energy transformation. With the development of society, new energy has gradually been paid attention to, and new energy battery packs have also been widely used. Among them, lithium-ion batteries have become the mainstream of automotive power batteries because of their high energy density, high power, low self-discharge, superior cycle performance, high charging efficiency and relatively "friendly" to the environment. It is also the main direction of development for major battery factories.

[0003] The battery ultrasonic welding device in the prior art includes a welding machine and a welding head. A battery positioning component is arranged on one side of the welding machine to realize the positioning of the battery cell. However, the existing battery positioning mechanism includes a shell, a cavity for accommodating the battery cell is arranged on the shell, and a fixing groove for accommodating the pole ear is opened on one side of the cavity. After the battery cell is fixed in this way, the position of the battery cell and the pole ear cannot be adjusted. When the distance between the pole ears on the side of the battery cell is long, the operator is required to move the position of the battery positioning mechanism to adjust the position of the battery cell and the pole ear. However, when the operator adjusts the position of the battery cell and the pole ear, it is easy to cause misoperation, resulting in the position of the pole ear welding point being too close or too far from the battery cell, thereby affecting the quality of the battery pack. Utility Model Content

[0004] The purpose of the utility model is to provide an ultrasonic welding device for a new energy battery pack to solve the above-mentioned technical problems.

[0005] The technical solution adopted by the utility model is as follows:

[0006] An ultrasonic welding device for a new energy battery pack comprises an ultrasonic welding body and a welding head arranged on one side of the ultrasonic welding body, and further comprises a supporting device and a limiting device, wherein the supporting device is arranged on one side of the ultrasonic welding body and located at the bottom of the welding head, and the limiting device is movably arranged on the supporting device;

[0007] The limiting device includes a fixed base plate, a limiting rod, a support block, a limiting block, an adjustment mechanism and a battery cell positioning mechanism, the limiting rod is provided at one end of the fixed base plate, one end of the limiting rod passes through the supporting device and is connected to the supporting block, the upper end of the supporting block is provided with the limiting block for supporting the pole ear, the lower end of the fixed base plate is provided with the adjustment mechanism, and the upper end of the fixed base plate is provided with the battery cell positioning mechanism.

[0008] Preferably, the supporting device comprises a mounting base, a supporting plate and a supporting pad, the supporting plate is provided at the upper end of the mounting base, the supporting pad is provided at the upper end of the supporting plate, and the upper surface of the limit block and the upper surface of the supporting pad are in the same plane.

[0009] As a further preference, a sliding hole and a threaded hole are provided on the support plate, and the limiting rod passes through the sliding hole.

[0010] As a further preference, the adjustment mechanism includes a screw rod and a knob, one end of the screw rod is provided with the knob, and the screw rod passes through the threaded hole.

[0011] As a further preference, it further includes a first connecting plate and a second connecting plate, the first connecting plate is provided at the lower end of the fixed base plate, the second connecting plate is provided at the lower end of the support block, the screw rod passes through the first connecting plate, and the other end of the screw rod is movably connected to the second connecting plate.

[0012] As a further preference, the first connecting plate is provided with a first through hole for the screw rod to pass through, and the second connecting plate is provided with a limiting hole, and the other end of the screw rod is arranged in the limiting hole.

[0013] As a further preference, it further includes a limiting plate, the other end of the screw rod is provided with the limiting plate, and the limiting plate is located in the limiting hole.

[0014] Preferably, the battery cell positioning mechanism includes a placement plate, a limit frame and a push plate mechanism, the placement plate is arranged at the upper end of the fixed bottom plate, the limit frame is provided at the upper end of one side of the placement plate, and the push plate mechanism is provided at the upper end of the other side of the placement plate.

[0015] As a further preference, the push plate mechanism includes a push plate, a positioning rod and a return spring, a protrusion structure is provided at the upper end of the other side of the placing plate, one end of the positioning rod passes through the protrusion structure, the other end of the positioning rod is provided with the push plate, the positioning rod is provided with the return spring, one end of the return spring is abutted against the protrusion structure, and the other end of the return spring is abutted against the push plate.

[0016] The above technical solution has the following advantages or beneficial effects:

[0017] In the utility model, by setting the battery cell positioning mechanism, the battery cell can be quickly positioned to avoid the occurrence of cold solder joints, insufficient solder joints or offset solder joints, and at the same time, the solder joints of multiple groups of tabs can be located at the same position, thereby improving the overall aesthetics of the battery pack; by setting the fixed bottom plate, the limit rod, the support block, the limit block and the adjustment mechanism, the position of the tab on the top of the support pad can be adjusted to avoid operator misoperation, which causes the position of the tab solder joint to be too close or too far from the battery cell, thereby affecting the quality of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the ultrasonic welding device for new energy battery packs in the utility model;

[0019] Figure 2 It is a structural schematic diagram of the supporting device in the utility model;

[0020] Figure 3 It is a structural schematic diagram of the limiting device in the utility model;

[0021] Figure 4 It is a structural schematic diagram of the battery cell positioning mechanism in the utility model.

[0022] In the figure: 1. ultrasonic welding body; 2. welding head; 3. supporting device; 31. mounting base; 32. supporting plate; 33. sliding hole; 34. threaded hole; 35. supporting pad; 4. limiting device; 41. fixed bottom plate; 42. limiting rod; 43. supporting block; 44. limiting block; 45. first connecting plate; 46. second connecting plate; 47. screw; 48. knob; 5. battery cell; 6. pole ear; 7. battery cell positioning mechanism; 71. placing plate; 72. limiting frame; 73. pushing plate; 74. positioning rod; 75. reset spring. DETAILED DESCRIPTION

[0023] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Figure 1 It is a three-dimensional diagram of the ultrasonic welding device for new energy battery packs in the utility model; Figure 2 It is a structural schematic diagram of the supporting device in the utility model; Figure 3 It is a structural schematic diagram of the limiting device in the utility model; Figure 4 This is a schematic diagram of the structure of the battery cell positioning mechanism in the utility model, see Figures 1 to 4 As shown, a preferred embodiment is shown, which shows an ultrasonic welding device for a new energy battery pack, including an ultrasonic welding body 1 and a welding head 2 arranged on one side of the ultrasonic welding body 1, and also includes a supporting device 3 and a limiting device 4. The supporting device 3 is arranged on one side of the ultrasonic welding body 1 and is located at the bottom of the welding head 2. The limiting device 4 is movably provided on the supporting device 3. In this embodiment, see Figure 1 As shown, the ultrasonic welding body 1 and the welding head 2 are both existing structures, wherein the welding head 2 is movably arranged on one side of the ultrasonic welding body 1. The support device 3 is used to support the limiting device 4, and the limiting device 4 is used to install the battery cell 5, wherein a tab 6 is fixedly arranged at one end of the battery cell 5. The welding head 2 is used to weld the tab 6.

[0027] In this embodiment, the position of the limiting device 4 on the supporting device 3 can be adjusted, thereby adjusting the position of the battery cell 5 and the tab 6 .

[0028] The limiting device 4 includes a fixed bottom plate 41, a limiting rod 42, a support block 43, a limiting block 44, an adjustment mechanism and a cell positioning mechanism 7. A limiting rod 42 is provided at one end of the fixed bottom plate 41, one end of the limiting rod 42 passes through the support device 3 and is connected to the support block 43, a limiting block 44 for supporting the tab 6 is provided at the upper end of the support block 43, an adjustment mechanism is provided at the lower end of the fixed bottom plate 41, and a cell positioning mechanism 7 is provided at the upper end of the fixed bottom plate 41. In this embodiment, see Figure 3 As shown, the fixed bottom plate 41 is fixedly connected to the limiting rod 42, the limiting rod 42 is fixedly connected to the supporting block 43, the limiting block 44 is used to support the tab 6, and the battery cell positioning mechanism 7 can realize the rapid installation and positioning of the battery cell 5, and can adapt to battery cells 5 of different lengths. The adjustment mechanism can drive the entire limiting device 4 to move, thereby adjusting the position of the battery cell 5 and the tab 6, so that the welding point positions of multiple groups of tabs 6 can be adjusted to the same position, thereby improving the overall aesthetics of the battery pack.

[0029] Further, as a preferred embodiment, the support device 3 includes a mounting base 31, a support plate 32 and a support pad 35. The upper end of the mounting base 31 is provided with a support plate 32, and the upper end of the support plate 32 is provided with a support pad 35. The upper surface of the limit block 44 and the upper surface of the support pad 35 are in the same plane. Figure 2 As shown, a sliding hole 33 and a threaded hole 34 are provided on the support plate 32, and a limiting rod 42 passes through the sliding hole 33, wherein two sliding holes 33 are provided, and one threaded hole 34 is provided, and the provided sliding hole 33 is used to install the limiting rod 42, and the limiting rod 42 can slide in the sliding hole 33. The provided support pad 35 is used to cooperate with the limiting block 44 to achieve support for the pole ear 6. When the battery cell 5 is installed in the battery cell positioning mechanism 7, the pole ear 6 can be laid flat on the upper surface of the support pad 35 and the limiting block 44.

[0030] Further, as a preferred embodiment, the adjustment mechanism includes a screw rod 47 and a knob 48. The knob 48 is provided at one end of the screw rod 47, and the screw rod 47 passes through the threaded hole 34. Figure 3 As shown, the screw rod 47 is provided with an external thread, and the outer surfaces of both ends of the screw rod 47 are smooth surfaces. The screw rod 47 is threadedly connected to the threaded hole 34, and the screw rod 47 can be driven to rotate by the knob 48, thereby driving the entire limit device 4 to move.

[0031] Further, as a preferred embodiment, it further includes a first connecting plate 45 and a second connecting plate 46. The first connecting plate 45 is disposed at the lower end of the fixed bottom plate 41, and the second connecting plate 46 is disposed at the lower end of the support block 43. The screw rod 47 passes through the first connecting plate 45, and the other end of the screw rod 47 is movably connected to the second connecting plate 46. Figure 3As shown, a first through hole for the screw 47 to pass through is provided on the first connecting plate 45, and a limiting hole is provided in the second connecting plate 46, and the other end of the screw 47 is provided in the limiting hole. The first connecting plate 45 and the second connecting plate 46 are provided to support the screw 47, and the screw 47 can rotate relative to the first connecting plate 45 and the second connecting plate 46, and the first connecting plate 45 is fixedly connected to the lower end of the fixed bottom plate 41, and the second connecting plate 46 is fixedly connected to the lower end of the support block 43.

[0032] Furthermore, as a preferred embodiment, a limiting piece is further included, and a limiting piece is provided at the other end of the screw rod 47, and the limiting piece is located in the limiting hole. In this embodiment, the other end of the screw rod 47 passes through the side wall of the second connecting plate 46 and extends into the limiting hole, wherein, by providing the limiting piece, the other end of the screw rod 47 can be prevented from being separated from the limiting hole, so that when the screw rod 47 rotates, the entire limiting device 4 can be driven to move.

[0033] Further, as a preferred embodiment, the cell positioning mechanism 7 includes a placement plate 71, a limit frame 72 and a push plate mechanism. The placement plate 71 is arranged at the upper end of the fixed bottom plate 41. The limit frame 72 is arranged at the upper end of one side of the placement plate 71, and the push plate mechanism is arranged at the upper end of the other side of the placement plate 71. Figure 4 As shown, the push plate mechanism includes a push plate 73, a positioning rod 74 and a return spring 75. A convex structure is provided at the upper end of the other side of the placement plate 71. One end of the positioning rod 74 passes through the convex structure. A push plate 73 is provided at the other end of the positioning rod 74. A return spring 75 is provided on the positioning rod 74. One end of the return spring 75 abuts against the convex structure, and the other end of the return spring 75 abuts against the push plate 73. By setting the push plate 73, the positioning rod 74 and the return spring 75, the battery cell 5 can be squeezed, thereby clamping and fixing the battery cell 5, and can adapt to battery cells 5 of different lengths.

[0034] When the locking cam 73 is in the unlocking state, the locking cam 73 is in the unlocking state, and the locking cam 73 is in the unlocking state, so that ...

[0035] When the distance between the tabs 6 on the side of the battery cell 5 is long, the knob 48 at the bottom of the fixed bottom plate 41 is rotated to drive the screw 47 to rotate inside the threaded hole 34, and the limit rod 42 is limited by the sliding hole 33 to adjust the distance between the fixed bottom plate 41 and the support plate 32, so that the distance between the battery cell 5 on the top of the placement plate 71 and the support plate 32 is fixed, and then the position of the tab 6 on the top of the support pad 35 is adjusted. Avoid operator misoperation, resulting in the position of the tab 6 welding point being too close or too far from the battery cell 5, thereby affecting the quality of the battery pack.

[0036] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. An ultrasonic welding device for a new energy battery pack, comprising an ultrasonic welding body and a welding head arranged on one side of the ultrasonic welding body, characterized in that: It also includes a supporting device and a limiting device, wherein the supporting device is arranged on one side of the ultrasonic welding body and located at the bottom of the welding head, and the limiting device is movably arranged on the supporting device; The limiting device includes a fixed base plate, a limiting rod, a support block, a limiting block, an adjustment mechanism and a battery cell positioning mechanism, the limiting rod is provided at one end of the fixed base plate, one end of the limiting rod passes through the supporting device and is connected to the supporting block, the upper end of the supporting block is provided with the limiting block for supporting the pole ear, the lower end of the fixed base plate is provided with the adjustment mechanism, and the upper end of the fixed base plate is provided with the battery cell positioning mechanism.

2. The ultrasonic welding device for new energy battery pack according to claim 1, characterized in that: The support device includes a mounting base, a support plate and a support pad. The support plate is disposed at the upper end of the mounting base, the support pad is disposed at the upper end of the support plate, and the upper surface of the limit block and the upper surface of the support pad are in the same plane.

3. The new energy battery pack ultrasonic welding device as claimed in claim 2, characterized in that: The support plate is provided with a sliding hole and a threaded hole, and the limiting rod passes through the sliding hole.

4. The new energy battery pack ultrasonic welding device as claimed in claim 3, characterized in that: The adjusting mechanism comprises a screw rod and a knob, one end of the screw rod is provided with the knob, and the screw rod passes through the threaded hole.

5. The new energy battery pack ultrasonic welding device as claimed in claim 4, characterized in that: It also includes a first connecting plate and a second connecting plate. The first connecting plate is provided at the lower end of the fixed base plate, and the second connecting plate is provided at the lower end of the support block. The screw rod passes through the first connecting plate, and the other end of the screw rod is movably connected to the second connecting plate.

6. The new energy battery pack ultrasonic welding device as claimed in claim 5, characterized in that: The first connecting plate is provided with a first through hole for the screw rod to pass through, and the second connecting plate is provided with a limiting hole, and the other end of the screw rod is arranged in the limiting hole.

7. The new energy battery pack ultrasonic welding device as claimed in claim 6, characterized in that: It also includes a limiting plate, which is arranged at the other end of the screw rod and is located in the limiting hole.

8. The new energy battery pack ultrasonic welding device according to claim 1, characterized in that: The battery cell positioning mechanism includes a placement plate, a limit frame and a push plate mechanism. The placement plate is arranged at the upper end of the fixed bottom plate. The limit frame is arranged at the upper end of one side of the placement plate, and the push plate mechanism is arranged at the upper end of the other side of the placement plate.

9. The new energy battery pack ultrasonic welding device as claimed in claim 8, characterized in that: The push plate mechanism includes a push plate, a positioning rod and a return spring. A protrusion structure is provided at the upper end of the other side of the placement plate. One end of the positioning rod passes through the protrusion structure. The other end of the positioning rod is provided with the push plate. The positioning rod is provided with the return spring. One end of the return spring is abutted against the protrusion structure, and the other end of the return spring is abutted against the push plate.

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