A battery film hot melting device

Abstract

The utility model discloses a battery package hot-melt device, including a plurality of hot-melt parts that are pressed toward or away from a stop frame support under the drive of a first drive device, the hot-melt parts are connected to the first drive device through an elastic device, and when the pressed hot-melt parts are subjected to a reverse pressure greater than a threshold value, the elastic device acts to offset the force greater than the threshold value in the reverse pressure. The hot-melt parts of the utility model are connected to the first drive device through an elastic device, and the force greater than the threshold value in the reverse pressure on the hot-melt parts is offset by the action of the elastic device, thereby ensuring that the forces on the hot-melt parts are balanced, and there is no need to check the consistency of the height of the hot-melt parts, as long as the height difference of all the hot-melt parts is not too large, which saves labor and greatly saves the hot-melt preparation time.

Description

Technical Field

[0001] The utility model relates to a battery film hot melting device, belonging to the technical field of lithium battery processing. Background Art

[0002] In order to achieve long battery life, lithium batteries are getting bigger and bigger, and the amount of liquid injection is also increasing. The polyester film (mylar film) of the battery cell is easier for the battery to absorb the electrolyte than the large glue. A hot melt device is required when hot melting the lithium battery polyester film and the stop frame. However, the existing hot melt device has the following disadvantages: when the hot melting points of the stop frame and the long side of the polyester film are more than 2, the hot melt device needs to be installed with multiple hot melt parts. Only when multiple hot melt parts are pressed down at the same height at the same time can all hot melt parts be guaranteed to be balanced in force and the hot melting effect can be guaranteed. Therefore, the height consistency of the hot melt parts needs to be checked before each hot melting, which is time-consuming and labor-intensive. Utility Model Content

[0003] The utility model provides a battery film hot-melting device, which solves the problems disclosed in the background technology.

[0004] According to one aspect of the present disclosure, a battery pack film hot-melt device is provided, including a plurality of hot-melt parts pressed toward or away from a stop frame support member under the drive of a first drive device, the hot-melt parts are connected to the first drive device through an elastic device, and when the pressed hot-melt parts are subjected to a reverse pressure greater than a threshold value, the elastic device acts to offset the force greater than the threshold value in the reverse pressure.

[0005] In some embodiments of the present disclosure, a connecting member is provided at the driving end of the first driving device;

[0006] The elastic device comprises an elastic member arranged between the hot melt member and the connecting member; when the hot melt member pressed downward is subjected to a reverse pressure greater than a threshold value, the elastic member contracts to offset the force greater than the threshold value in the reverse pressure.

[0007] In some embodiments of the present disclosure, the elastic device further includes a first guide member disposed between the hot melt member and the connecting member; when the elastic member is extended or retracted, the first guide member guides the movement direction of the hot melt member.

[0008] In some embodiments of the present disclosure, the first guide member is a first slide rail structure.

[0009] In some embodiments of the present disclosure, the first guide member is a guide rod, one end of which is connected to the hot melt member, the other end of which passes through a guide hole on the connecting member, and the end is provided with a terminating member for terminating the guide.

[0010] In some embodiments of the present disclosure, the first guide member includes a guide rod and a first slide rail structure, one end of the guide rod is connected to the hot melt member, the other end of the guide rod passes through the guide hole on the connecting member, and the end is provided with a termination member for terminating the guide.

[0011] In some embodiments of the present disclosure, the elastic member is a spring, and the spring is sleeved on the guide rod.

[0012] In some embodiments of the present disclosure, the hot melt ends of all hot melt elements are connected to heating wires.

[0013] In some embodiments of the present disclosure, a second driving device is further included, and the second driving device drives the stop frame support member, and the stop frame support member and the hot melt member move toward or away from each other.

[0014] The beneficial effects achieved by the utility model are as follows: 1. The hot melt component of the utility model is connected to the first driving device through an elastic device, and the elastic device acts to offset the force greater than the threshold value in the reverse pressure on the hot melt component, thereby ensuring that the hot melt components are subjected to balanced forces, and there is no need to check the height consistency of the hot melt components. It is sufficient to ensure that the height difference of all hot melt components is not too large, which saves labor and greatly saves hot melt preparation time; 2. The hot melt ends of all hot melt components of the utility model are connected to heating wires, ensuring that the hot melt area is uniform and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the battery film hot melting device. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. It is obvious that the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present disclosure and its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0017] Unless otherwise specified, the relative arrangement of components set forth in these embodiments does not limit the scope of the present disclosure.

[0018] At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0019] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0020] To solve the problem of the need for highly consistent inspection of multiple hot-melt parts, the present disclosure proposes a battery film wrapping hot-melt device.

[0021] Figure 1 As a schematic diagram of an embodiment of the battery film wrapping hot-melt device of the present disclosure, it includes a plurality of hot-melt parts that are pressed against or away from the stop frame support 13 under the drive of the first drive device 1. The hot-melt parts are connected to the first drive device 1 through an elastic device. When the downwardly pressed hot-melt part receives a reverse pressure greater than the threshold value, the elastic device acts to offset the force greater than the threshold value in the reverse pressure; wherein, the threshold value here is the weight of the hot-melt part.

[0022] It should be noted that the above-mentioned hot-melt device is integrally installed on a bracket, and multiple hot-melt devices can be installed on the bracket according to requirements, such as Figure 1 installing two in [the figure]. The overall shape of the bracket in the figure is in the shape of a "king". The bottom plate (referred to as the bottom plate) serves as the base, the middle plate (referred to as the middle plate) installs the stop frame support 13, and the top plate (referred to as the top plate) installs a plurality of hot-melt parts driven by the first drive device 1.

[0023] It should be noted that there are various structures of the first drive device 1, such as motor drive and cylinder drive. Here, a cylinder is specifically used. The cylinder is directly fixed on the bracket, and the air intake of the cylinder can be controlled through a solenoid valve group to control the cylinder. In order to facilitate the connection of the elastic device, in some embodiments, a connecting piece is fixed to the drive end of the first drive device 1, such as Figure 1 the connecting plate 5 in [the figure], that is, the hot-melt part is connected to the connecting plate 5 through an elastic device, and the cylinder drives the connecting plate 5 to move, thereby driving the hot-melt part to move.

[0024] To ensure stable movement, a second guiding member is installed between the connecting plate 5 and the top plate. Specifically, a second slide rail structure is adopted, including a second guide rail 3 and a second slider 4. The second guide rail 3 is fixed on the top plate and is distributed along the movement direction of the cylinder. The second slider 4 is slidably installed on the second guide rail 3, and the connecting plate 5 is fixed to the second slider 4. When the cylinder works, the connecting plate 5 moves along the second guide rail 3, and the movement stability is ensured through the limitation of the second guide rail 3.

[0025] It should be noted that the hot-melt part is an integrated device, generally three are provided and arranged in a row. Specifically, it may include a heating sheet 10 and a hot-melt head 11 fixed together with the heating sheet 10. After the heating sheet 10 is powered on, it generates heat and conducts the heat to the hot-melt head 11. To facilitate the fixation of the hot-melt part, the hot-melt part generally further includes a fixing part, such as Figure 1 the fixing plate 14 in [the figure]. The heating sheet 10 and the hot-melt head 11 are fixed on the fixing plate 14 together, and at the same time, the fixing plate 14 is used for connecting with the elastic device.

[0026] In some embodiments, the hot melt ends of all hot melt components are connected to the heating wire 12, that is, each hot melt head 11 is connected to the heating wire 12. Figure 1 There are three hot melt parts, each of which is connected to a heating wire 12. Heat is transferred to the hot melt head 11 through the heating plate 10, and the hot melt head 11 is transferred to the heating wire 12. Hot melting is performed through the heating wire 12, thereby ensuring that the hot melting area is uniform and stable.

[0027] In some embodiments, the elastic device includes an elastic member installed between the hot melt member and the connecting plate 5; when the pressed hot melt member is subjected to a reverse pressure greater than a threshold, the elastic member contracts to offset the force greater than the threshold in the reverse pressure.

[0028] It should be noted that currently common elastic parts include springs 15, spring clips, etc. Since the elastic part needs to support the hot melting of the hot melt part, when the elastic device only includes the elastic part, the elastic part is required not to shake easily. Therefore, in this case, a spring clip can be selected, that is, the spring clip is set vertically, the top end of the spring clip is fixed to the connecting plate 5, and the bottom end of the spring clip is connected to the fixing plate 14, so that the force greater than the threshold in the reverse pressure is offset by the expansion and contraction of the spring clip.

[0029] Although the above-mentioned spring piece can achieve the purpose of the present invention, if only the elastic part is used to support the hot-melt part, the elastic part is easily damaged. Therefore, in some embodiments, the elastic device includes not only the elastic part but also a first guide part installed between the hot-melt part and the connecting plate 5; when the elastic part is extended or retracted, the first guide part guides the movement direction of the hot-melt part, and through the guidance and limitation of the guide part, the elastic part is guaranteed to be stably extended and retracted and not easily damaged.

[0030] In some embodiments, similar to the second guide member, the first guide member here can adopt a first slide rail structure, including a first guide rail 8 and a first slider 9. The first guide rail 8 is fixed to the connecting plate 5 and is also distributed along the movement direction of the cylinder. The first slider 9 is slidably mounted on the first guide rail 8, and the fixing plate 14 is fixed to the second slider 4. When the hot melt receives a reverse pressure greater than a threshold value, the hot melt moves along the first guide rail 8 together with the fixing plate 14.

[0031] In some embodiments, the first guide member may be a guide rod 6, one end of which is connected to the hot melt member, that is, connected to the fixing plate 14, and the other end of the guide rod 6 passes through the guide hole on the connecting member, and a terminating member 7 for terminating the guide, such as a nut, is fixed to the end, and the guide rod 6 is distributed along the movement direction of the cylinder. When the hot melt member receives a reverse pressure greater than a threshold, the hot melt member moves under the guidance of the guide rod 6 and the guide hole.

[0032] In some embodiments, the first guide member may include a guide rod 6 and a first slide rail structure. The connection between the guide rod 6 and the first slide rail structure is the same as above and will not be repeated here.

[0033] It should be noted that if the first guide member includes a guide rod 6, the elastic member can directly adopt a spring 15, and the spring 15 is sleeved on the guide rod 6. This is not only simple to install, but also does not require a separate elastic member installation space.

[0034] It should be noted that the stop frame support 13 is a support block adapted to the stop frame, which is installed on the middle plate through the second drive device 2. The second drive device 2 also uses a cylinder. The second drive device 2 and the first drive device 1 respectively drive the support block and the hot melt component to move toward or away from each other, thereby hot-melting the long edge of the polyester film through the hot melt component.

[0035] The hot melting process of the above-mentioned hot melting device is as follows: the second driving device 2 is lifted, the stop frame support 13 supports the lower stop frame of the battery cell, the first driving device 1 drives the hot melting head 11 to descend, and the heating wire 12 contacts with the upper stop frame of the battery cell. After contact, the heating wire 12 is heated. After heating for a certain period of time, the first driving device 1 drives the hot melting head 11 and the heating wire 12 to rise, and then the second driving device 22 drives the stop frame support 13 to descend, and the entire hot melting process is completed.

[0036] The hot melt component of the hot melt device is connected to the first driving device 1 through an elastic device, and the elastic device acts to offset the force greater than the threshold value in the reverse pressure on the hot melt component, thereby ensuring that the hot melt components are subjected to balanced forces. There is no need to check the height consistency of the hot melt components, as long as the height difference of all the hot melt components is not too large, which saves labor and greatly saves the hot melt preparation time.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A battery film hot-melt device, characterized in that: It includes multiple hot melt parts that are pressed toward or away from the stop frame support part under the drive of the first driving device. The hot melt parts are connected to the first driving device through an elastic device. When the pressed hot melt parts are subjected to a reverse pressure greater than a threshold, the elastic device acts to offset the force greater than the threshold in the reverse pressure.

2. The battery film hot-melt device according to claim 1, characterized in that: A connecting piece is provided at the driving end of the first driving device; The elastic device comprises an elastic member arranged between the hot melt member and the connecting member; when the hot melt member pressed downward is subjected to a reverse pressure greater than a threshold value, the elastic member contracts to offset the force greater than the threshold value in the reverse pressure.

3. The battery film hot-melting device according to claim 2, characterized in that: The elastic device also includes a first guide member arranged between the hot-melt member and the connecting member; when the elastic member is extended or retracted, the first guide member guides the moving direction of the hot-melt member.

4. The battery film hot-melting device according to claim 3, characterized in that: The first guide member is a first slide rail structure.

5. The battery film hot-melting device according to claim 3, characterized in that: The first guide member is a guide rod, one end of which is connected to the hot melt member, and the other end of which passes through a guide hole on the connecting member, and a terminating member for terminating the guide is provided at the end.

6. The battery film hot-melting device according to claim 3, characterized in that: The first guide member includes a guide rod and a first slide rail structure. One end of the guide rod is connected to the hot melt member, and the other end of the guide rod passes through the guide hole on the connecting member, and the end is provided with a terminating member for terminating the guide.

7. The battery film hot-melting device according to claim 5 or 6, characterized in that: The elastic member is a spring, and the spring is sleeved on the guide rod.

8. The battery film hot-melting device according to claim 1, characterized in that: The hot melt ends of all hot melt parts are connected with heating wires.

9. The battery film hot-melting device according to claim 1, characterized in that: It also includes a second driving device, which drives the stop frame support member, and the stop frame support member and the hot melt member move toward or away from each other.

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