Insulating film hot melting mechanism

Abstract

The utility model belongs to the technical field of battery manufacturing, and particularly relates to an insulating film hot melting mechanism. The hot melting assembly comprises a main body part, two conductive pieces and a heating piece, the main body part can be installed on the base in a Z-direction sliding mode, the two conductive pieces are arranged on the two sides of the main body part in the X direction respectively, the heating piece is located at one end of the main body part in the Z direction, and the two ends of the heating piece are connected with the two conductive pieces respectively; the elastic piece is located at the other end of the main body part in the Z direction and axially abuts against the position between the base and the main body part in the Z direction; the two conductive pieces are used for electrifying and heating the heating piece; the beneficial effects of the utility model are that when the driving device pushes the hot melting mechanism to carry out insulating film hot melting operation, the insulating film can be ensured to be completely attached to the top cover holder by using the telescoping resilience of the elastic member, so that the over-melting between the insulating film and the top cover caused by excessive pushing of the hot melting mechanism is avoided; and the phenomenon of poor hot melting between the insulating film and the top cover caused by less pushing can also be prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery manufacturing, and particularly relates to an insulating film hot-melting mechanism. Background Art

[0002] During the production process of batteries, an insulating film needs to be wrapped around the battery cell to prevent short circuits inside the battery. The insulating film is generally connected to the lower insulating part of the top cover of the battery through a hot melt mechanism.

[0003] In the prior art, when the hot melt mechanism is hot-melting the insulating film onto the lower insulating part of the top cover, since the distance between the heating wire and the lower insulating part is difficult to accurately control, it is easy for the hot melt mechanism to push too much, resulting in over-melting of the insulating film and the lower insulating part, or push too little, resulting in the insulating film being unable to be effectively hot-melted onto the lower insulating part. Utility Model Content

[0004] The utility model aims to solve the above-mentioned technical problems and provide an insulating film hot-melt mechanism, which can prevent the insulating film and the insulating member under the top cover from over-melting or poor hot-melting.

[0005] In view of this, the utility model provides an insulating film hot-melt mechanism, comprising:

[0006] Base;

[0007] A hot melt assembly, the hot melt assembly comprising a main body, two conductive parts and a heating element, the main body being slidably mounted on the base in the Z direction, the two conductive parts being respectively arranged on both sides of the main body in the X direction, the heating element being located at one end of the main body in the Z direction, and both ends of the heating element being respectively connected to the two conductive parts;

[0008] An elastic member, the elastic member is located at the other end of the main body in the Z direction and is axially abutted between the base and the main body along the Z direction;

[0009] Wherein, the two conductive parts are used to heat the heating element by energizing it.

[0010] Furthermore, the conductive element includes a first conductive block and a second conductive block, the first conductive block and the second conductive block are sequentially mounted on the main body by setting fasteners, and a mounting hole for mounting the heating element is formed between the first conductive block and the second conductive block.

[0011] Furthermore, the conductive member further comprises a locking assembly for fixing the heating member, and the locking assembly comprises:

[0012] A fixing bolt, wherein the fixing bolt is threadedly connected to the first conductive block;

[0013] A pressing block, wherein the pressing block is located in the mounting hole;

[0014] The heating element is arranged between the pressing block and the second conductive block, and the end of the fixing bolt abuts against the pressing block.

[0015] Furthermore, a wire fixing piece is also provided on the conductive piece.

[0016] Furthermore, the main body also includes an ejector pin, and the ejector pin abuts against the heating element in the Z direction.

[0017] Furthermore, the elastic member is a spring.

[0018] Furthermore, it also includes:

[0019] A slide rail, wherein the slide rail is arranged on the base;

[0020] A slider, wherein the slider is slidably connected and cooperates with the slide rail;

[0021] The main body is mounted on a slide block, and a sliding connection is achieved between the main body and the base via a slide rail and a slide block.

[0022] Furthermore, a limiting plate for limiting the movement of the sliding block along the Z direction is also provided on the base.

[0023] Furthermore, the sliding block is provided with a connecting seat, and the main body is installed on the connecting seat.

[0024] Furthermore, it also includes an isolation block, which is arranged between the main body and the connecting seat.

[0025] The beneficial effects of the utility model are:

[0026] 1. When the driving device pushes the hot melt mechanism to perform hot melt operation on the insulating film, the elastic member's telescopic rebound can ensure that the insulating film is completely thermally attached to the top cover retaining frame, thereby preventing the hot melt mechanism from pushing too much and causing over-melting between the insulating film and the top cover, and preventing the hot melt mechanism from pushing too little and causing poor hot melt between the insulating film and the top cover.

[0027] 2. A mounting hole for installing the heating element is formed between the first conductive block and the second conductive block. A clamping block is provided in the mounting hole. The clamping block is pushed against the heating element by a fixing bolt to fix the heating element. When the heating element needs to be replaced, only the fixing bolt needs to be loosened, and then the two ends of the heating element are removed from the mounting hole, which reduces the replacement time of the heating element, reduces the probability of failure, and improves work efficiency.

[0028] 3. Use the ejector pin to isolate the heater from the main body, reduce the contact area between the heater and the main body, increase the heat dissipation speed of the heater when the power is off, and reduce the heat accumulation in the main body, so as to avoid the temperature sensor being unable to detect the real temperature data. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0030] Figure 2 It is a structural schematic diagram of the hot melt component in the utility model;

[0031] Figure 3 It is a schematic diagram of the structure of the utility model without hot melt components;

[0032] The symbols in the figure are:

[0033] 1. Base; 2. Main body; 21. Ejector pin; 3. Conductive member; 31. First conductive block; 32. Second conductive block; 33. Fixing bolt; 34. Pressing block; 35. Wire fixing member; 4. Heating member; 5. Elastic member; 6. Slide rail; 7. Sliding block; 8. Limiting plate; 9. Connecting seat; 10. Isolating block. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] In the description of the present application, it should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0036] Embodiment 1:

[0037] This embodiment provides an insulating film hot-melt mechanism, comprising:

[0038] Base 1;

[0039] A hot melt assembly, the hot melt assembly comprising a main body 2, two conductive members 3 and a heating member 4, the main body 2 being slidably mounted on the base 1 in the Z direction, the two conductive members 3 being respectively arranged on both sides of the main body 2 in the X direction, the heating member 4 being located at one end of the main body 2 in the Z direction, and the two ends of the heating member 4 being respectively connected to the two conductive members 3;

[0040] An elastic member 5, the elastic member 5 is located at the other end of the main body 2 in the Z direction, and is axially abutted between the base 1 and the main body 2 along the Z direction;

[0041] The two conductive elements 3 are used to heat the heating element 4 by energizing it.

[0042] In this technical solution, the insulating film is arranged on the top cover retaining frame, and the driving device is used to push the hot melt mechanism to move. The driving device can be a cylinder. After the cylinder pushes the hot melt mechanism to allow the heating element 4 to fit on the insulating film, the cylinder continues to push the hot melt mechanism to move, and the elastic element 5 is deformed by the force to generate a restoring force, thereby ensuring that the insulating film is tightly attached to the top cover retaining frame.

[0043] The main body 2 is made of insulating material, and the heating element 4 can be a thermal fuse. The two ends of the heating element 4 are respectively connected to the two conductive elements 3. By energizing the two conductive elements 3, the heating element 4 is heated by utilizing the thermal effect of the current. The heating element 4 then transfers the heat to the insulating film, causing the portion of the insulating film in contact with the heating element 4 to melt due to the heat. Then, the power is stopped and the temperature is lowered, so that the insulating film is bonded and fixed to the insulating element under the top cover.

[0044] Through this structural design, when the driving device pushes the hot melt mechanism to perform the hot melt operation of the insulating film, the expansion and contraction rebound of the elastic member 5 can ensure that the insulating film is completely attached to the surface of the insulating part under the top cover, thereby avoiding the phenomenon that the hot melt mechanism is pushed too much and causes over-melting between the insulating film and the lower insulating part, and also avoiding the phenomenon that the hot melt mechanism is pushed too little and causes poor hot melting between the insulating film and the lower insulating part.

[0045] Embodiment 2:

[0046] This embodiment provides an insulating film hot-melt mechanism, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0047] Furthermore, the conductive member 3 includes a first conductive block 31 and a second conductive block 32, which are sequentially mounted on the main body 2 by fasteners, and a mounting hole for mounting the heater is formed between the first conductive block 31 and the second conductive block 32.

[0048] Furthermore, the conductive member 3 further comprises a locking assembly for fixing the heating element, and the locking assembly comprises:

[0049] A fixing bolt 33, wherein the fixing bolt 33 is threadedly connected to the first conductive block 31;

[0050] A pressing block 34, wherein the pressing block 34 is located in the mounting hole;

[0051] The heating element is disposed between the pressing block 34 and the second conductive block 32 , and the end of the fixing bolt 33 abuts against the pressing block 34 .

[0052] In the present technical solution, connection holes corresponding to each other are provided on the first conductive block 31, the second conductive block 32 and the main body 2, and bolts or screws are provided to pass through the first conductive block 31 and the second conductive block 32 in sequence, and then connected to the connection holes on the main body 2, so that the first conductive block 31 and the second conductive block 32 are firmly and stably installed on the main body 2.

[0053] A mounting hole is formed between the first conductive block 31 and the second conductive block 32, and a clamping block 34 is provided in the mounting hole. One end of the heating element is located between the clamping block 34 and the second conductive block 32. By rotating the fixing bolt 33, the degree of tightness between the fixing bolt 33 and the clamping block 34 can be adjusted to ensure that the heating element is clamped in the mounting hole, so that the heating element is firmly installed in the mounting hole and is tightly attached to the second conductive block 32, thereby ensuring that the current can be effectively transmitted through the conductive element 3.

[0054] When replacing the heating element, the fixing bolt 33 is loosened so that the clamping block 34 no longer presses against the end of the heating element, and then the end of the heating element is removed from the mounting hole to realize the disassembly and separation of the heating element. In addition, a positioning groove is also provided on the first conductive block 31, and an extension part adapted to the positioning groove is provided on the clamping block 34, and the extension part is located in the positioning groove. The cooperation between the extension part and the positioning groove plays a limiting effect on the installation of the clamping block 34, preventing the clamping block 34 from falling out of the mounting hole when replacing the heating element, and effectively improving the replacement speed of the heating element.

[0055] To sum up, through this structural design, the mounting hole formed between the first conductive block 31 and the second conductive block 32 provides a convenient position for the installation of the heating element, and then the fixing bolt 33 and the clamping block 34 are used to tighten the heating element, so that the heating element is firmly fixed in the mounting hole; when the heating element needs to be replaced, it is only necessary to loosen the fixing bolt 33 and then remove the two ends of the heating element from the mounting hole, which effectively reduces the replacement time of the heating element, reduces the probability of failure, and improves work efficiency.

[0056] Embodiment 3:

[0057] This embodiment provides an insulating film hot-melt mechanism, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0058] Furthermore, a wire fixing member 35 is also provided on the conductive member 3 .

[0059] In the present technical solution, the guide fixing member can be a bolt, and a threaded hole adapted to the bolt is opened on the first conductive block 31 of the conductive member 3, the wire of the external power supply is wrapped around the bolt, and then the bolt is threadedly connected to the first conductive block 31, and the bolt head is used to press the wire and the first conductive block 31 tightly, so that the wire and the first conductive block 31 remain in close contact, thereby ensuring that the current can be transmitted effectively and stably.

[0060] Embodiment 4:

[0061] This embodiment provides an insulating film hot-melt mechanism, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0062] Furthermore, the main body 2 further includes an ejector pin 21 , and the ejector pin 21 abuts against the heat generating element 4 in the Z direction.

[0063] In the technical solution, the heating element 4 is located at one end of the main body 2 in the Z direction, the elastic element 5 is provided at the other end of the main body 2 in the Z direction, and a stainless steel ejector pin 21 is provided on the main body 2, and the ejector pin 21 abuts against the heating element 4 in the Z direction. Through this structural design, the ejector pin 21 is used to isolate the heating element from the main body 2, and the contact area between the heating element and the main body 2 is reduced. On the one hand, the contact area between the heating element and the air is increased, and the heat dissipation speed of the heating element is improved when the power is off; on the other hand, the heat accumulation phenomenon of the main body 2 is reduced to avoid the temperature sensor being unable to detect the real temperature data.

[0064] Embodiment 5:

[0065] This embodiment provides an insulating film hot-melt mechanism, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0066] Furthermore, the elastic member 5 is a spring.

[0067] In the present technical solution, the elastic member 5 can be a spring, which is axially abutted between the base 1 and the main body 2 along the Z direction; a limiting groove is also provided on the base 1, one end of the spring is installed in the limiting groove of the base 1, and the other end is connected to the main body 2. This structural design enhances the connection stability between the spring and the base 1, so that the spring is not easily displaced during extension and contraction.

[0068] Embodiment 6:

[0069] This embodiment provides an insulating film hot-melt mechanism, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0070] Furthermore, it also includes:

[0071] A slide rail 6, wherein the slide rail 6 is arranged on the base 1;

[0072] A slider 7, wherein the slider 7 is slidably connected with the slide rail 6;

[0073] The main body 2 is mounted on a slide block 7 , and a sliding connection is achieved between the main body 2 and the base 1 via a slide rail 6 and a slide block 7 .

[0074] Furthermore, the base 1 is also provided with a limiting plate 8 for limiting the movement of the sliding block 7 along the Z direction.

[0075] In the present technical solution, through this structural design, the sliding connection between the slider 7 and the slide rail 6 is utilized to realize that the main body 2 can be slidably installed on the base 1 in the Z direction, and a limit plate 8 is provided on the base 1 which can limit the movement of the slider 7 on the slide rail 6, thereby ensuring that the slider 7 moves within a safe range, avoiding the slider 7 from exceeding the safe range or accidentally sliding out of the slide rail 6, and further ensuring that the main body 2 on the slider 7 can move stably and reliably in the Z direction.

[0076] Embodiment 7:

[0077] This embodiment provides an insulating film hot-melt mechanism, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0078] Furthermore, a connecting seat 9 is provided on the sliding block 7 , and the main body 2 is mounted on the connecting seat 9 .

[0079] In this technical solution, the main body 2 is installed on the connecting seat 9 by setting bolts or screws, and the connecting seat 9 is driven to move by the slider 7, thereby indirectly driving the main body 2 to move; through this structural design, the installation position of the main body 2 on the slider 7 is stable and controllable.

[0080] Furthermore, an isolation block 10 is included, and the isolation block 10 is arranged between the main body 2 and the connecting seat 9. In order to ensure that the main body 2 can be firmly and stably installed on the slider 7, the connecting seat 9 is generally made of metal, and then an isolation block 10 of insulating material is arranged, and the two conductive members 3 of the main body 2 in the X direction are isolated from the connecting seat 9 by the isolation block 10, so as to prevent the battery from being transferred to the connecting seat 9 and the slider 7 when the conductive members 3 are energized.

[0081] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. An insulating film hot-melt mechanism, characterized in that: include: Base (1); A hot melt assembly, the hot melt assembly comprising a main body (2), two conductive parts (3) and a heating element (4), the main body (2) being slidably mounted on a base (1) in the Z direction, the two conductive parts (3) being respectively arranged on both sides of the main body (2) in the X direction, the heating element (4) being located at one end of the main body (2) in the Z direction, and the two ends of the heating element (4) being respectively connected to the two conductive parts (3); An elastic member (5), the elastic member (5) being located at the other end of the main body (2) in the Z direction and being axially abutted between the base (1) and the main body (2) along the Z direction; The two conductive elements (3) are used to heat the heating element (4) by energizing it.

2. The insulating film hot-melt mechanism according to claim 1, characterized in that: The conductive member (3) comprises a first conductive block (31) and a second conductive block (32), wherein the first conductive block (31) and the second conductive block (32) are sequentially mounted on the main body (2) by arranging fasteners, and a mounting hole for mounting the heating member is formed between the first conductive block (31) and the second conductive block (32).

3. The insulating film hot-melt mechanism according to claim 2, characterized in that: The conductive member (3) further comprises a locking assembly for fixing the heating member, wherein the locking assembly comprises: A fixing bolt (33), wherein the fixing bolt (33) is threadedly connected to the first conductive block (31); A pressing block (34), wherein the pressing block (34) is located in the mounting hole; The heating element is arranged between the pressing block (34) and the second conductive block (32), and the end of the fixing bolt (33) abuts against the pressing block (34).

4. The insulating film hot-melt mechanism according to claim 1, characterized in that: The conductive member (3) is also provided with a wire fixing member (35).

5. The insulating film hot-melt mechanism according to claim 1, characterized in that: The main body (2) further comprises an ejector pin (21), wherein the ejector pin (21) abuts against the heating element (4) in the Z direction.

6. The insulating film hot-melt mechanism according to claim 1, characterized in that: The elastic member (5) is a spring.

7. The insulating film hot-melt mechanism according to claim 1, characterized in that: Also includes: A slide rail (6), wherein the slide rail (6) is arranged on the base (1); A slider (7), wherein the slider (7) is slidably connected and matched with the slide rail (6); The main body (2) is mounted on a slide block (7), and the main body (2) and the base (1) are slidably connected via a slide rail (6) and a slide block (7).

8. The insulating film hot-melt mechanism according to claim 7, characterized in that: The base (1) is also provided with a limiting plate (8) for limiting the movement of the sliding block (7) along the Z direction.

9. The insulating film hot-melt mechanism according to claim 7, characterized in that: The sliding block (7) is provided with a connecting seat (9), and the main body (2) is mounted on the connecting seat (9).

10. The insulating film hot-melt mechanism according to claim 9, characterized in that: It also comprises an isolation block (10), wherein the isolation block (10) is arranged between the main body (2) and the connecting seat (9).

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