Multi-slot seal head for packaging high-capacity solid sodium ion battery

Abstract

The utility model relates to a multi-slot seal head for packaging a high-capacity solid sodium ion battery. The multi-slot seal head comprises an upper base and a lower base, the upper base and / or the lower base can move so that the upper base and the lower base are close; a plurality of upper sealing heads are fixedly arranged on the upper base; a seal head gap is formed between every two adjacent upper seal heads; a plurality of lower sealing heads are fixedly arranged on the lower base; a seal head gap is formed between every two adjacent lower seal heads; and the upper sealing heads and the lower sealing heads are oppositely arranged and are in one-to-one correspondence. The utility model has the effect that firmer heat sealing can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of large-capacity solid-state sodium ion battery packaging, in particular to a multi-slot sealing head for large-capacity solid-state sodium ion battery packaging. Background Art

[0002] With the application of sodium ion batteries in large-scale energy storage, the capacity of single cells is getting larger and larger, and the power needs to be larger and larger. Reducing the number of parallel connections when combining batteries is conducive to improving efficiency and reducing costs. Although there are currently three types of sodium batteries in terms of appearance, cylindrical, square aluminum shell and aluminum-plastic film soft package, both semi-solid and all-solid are produced in soft package form. There are two very important links in soft package semi-solid and all-solid sodium batteries, top sealing and side sealing (or edge sealing). The side sealing is relatively simple, which is just the thermal composite of the upper and lower aluminum-plastic films, but the top sealing is complicated, involving the thermal composite of the positive and negative pole ear metal strips, packaging glue (or sealant), and the upper and lower aluminum-plastic films with multiple interfaces and multiple levels. It cannot be over-sealed or not sealed firmly. Special equipment and processes must be developed to stably and continuously produce qualified products. For large-sized energy storage and large-capacity sodium batteries, especially for large-sized ones with a top-sealed package length of 1000-2000MM, the top sealing is more difficult. The utility model innovates the upper and lower heads and equipment of large-sized top-sealed sodium batteries, which solves this problem very well. Utility Model Content

[0003] One purpose of the utility model is to solve or alleviate the above technical problems.

[0004] The means adopted by the utility model is a multi-slot head for packaging a large-capacity solid-state sodium ion battery, which comprises an upper base and a lower base; the upper base and / or the lower base can be moved so that the distance between the two is close; a plurality of upper heads are fixedly arranged on the upper base; a head gap is arranged between two adjacent upper heads; a plurality of lower heads are fixedly arranged on the lower base; a head gap is arranged between two adjacent lower heads; the upper heads and the lower heads are arranged opposite to each other and correspond to each other one by one.

[0005] The utility model has the effect of realizing a relatively firm heat seal.

[0006] According to a further technical solution, both the upper head and the lower head are provided with head grooves.

[0007] According to a further technical solution, the head groove of the upper head is directly opposite to the head groove of the lower head.

[0008] According to a further technical solution, the head groove of the upper head is staggered with the head groove of the lower head.

[0009] A further technical solution is that there are two upper heads and two lower heads.

[0010] According to a further technical solution, the width of the head gap is 2 mm or 8 mm.

[0011] The multi-slot sealing head for large-capacity solid-state sodium ion battery packaging of the utility model is used to make BT120888699, with a capacity of 600Ah, a top seal length of 1200mm, and a width of 10mm. The traditional method is that the pole ear is 868mm*8mm, and the pole ear of the utility model is 2 430mm*(4+4)mm, with a gap of 8mm in the middle of the pole ear and a gap of 2mm between the sealants. The effect test of the top seal packaging is shown in the following table. The performance of the special top seal head of the utility model is compared with that of the special top seal head of the utility model.

[0012] BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a bottom view of the lower base 2 of the prior art.

[0014] Figure 2 It is a cross-sectional view of the head of the prior art; the cross-sectional view is perpendicular to Figure 1 The lower base 2.

[0015] Figure 3 It is a side sectional view showing the sealing effect of the head in the prior art.

[0016] Figure 4 The utility model is a bottom view of a multi-slot sealing head for packaging a large-capacity solid-state sodium ion battery according to an embodiment of the utility model.

[0017] Figure 5 is a cross-sectional view of a multi-slot head for packaging a large-capacity solid-state sodium ion battery according to an embodiment of the utility model; the cross section is perpendicular to Figure 4 The lower base 2.

[0018] Figure 6 It is a schematic diagram of a sodium ion battery with a multi-slot header for packaging a large-capacity solid-state sodium ion battery according to an embodiment of the utility model.

[0019] Figure 7 It is a partial cross-sectional view from the side of a multi-slot head for packaging a large-capacity solid-state sodium-ion battery according to an embodiment of the utility model, showing the sealing effect of the head; the cross-section of this figure is perpendicular to the pole ear 99 but offset from the pole ear 99.

[0020] Designate the drawings in the specification Figure 5 Attached is the abstract.

[0021] Upper base 1; upper head 11; lower base 2; lower head 21; head gap 3; head groove 4; sodium ion battery 9; aluminum-plastic film 91; sealing area 911; sealing area gap 912; head groove corresponding area 913; pole ear 99; pole piece 991. DETAILED DESCRIPTION

[0022] The specific implementation of the utility model will be described below with reference to the accompanying drawings of the specification.

[0023] As a specific embodiment, the multi-slot head for packaging a large-capacity solid-state sodium-ion battery of the embodiment of the utility model includes an upper base 1 and a lower base 2; the upper base 1 and / or the lower base 2 can move so that the distance between the two is close; for example, the movement is achieved by a power device such as a cylinder or a cylinder.

[0024] A plurality of upper heads 11 are fixedly arranged on the upper base 1 ; a head gap 3 is arranged between two adjacent upper heads 11 .

[0025] A plurality of lower heads 21 are fixedly arranged on the lower base 2 ; a head gap 3 is arranged between two adjacent lower heads 21 .

[0026] The upper end cap 11 and the lower end cap 21 are arranged opposite to each other and correspond to each other one by one. Both the upper end cap 11 and the lower end cap 21 can be heated in a conventional manner.

[0027] The working principle is that when in use, the sodium ion battery 9 is transported between the upper base 1 and the lower base 2 by conventional transporting methods such as a manipulator or a conveyor belt, and then the upper base 1 and / or the lower base 2 are moved so that the upper sealing head 11 and the lower sealing head 21 clamp the sealing area 911 of the aluminum-plastic film 91 to achieve a relatively firm heat seal. The sealing head groove 4 corresponds to the sealing head groove corresponding area 913.

[0028] As one of the specific implementations, both the upper head 11 and the lower head 21 are provided with head grooves 4 .

[0029] As one of the specific implementations, the head groove 4 of the upper head 11 is directly opposite to the head groove 4 of the lower head 21 .

[0030] As one of the specific implementations, the head groove 4 of the upper head 11 is staggered with the head groove 4 of the lower head 21 .

[0031] As one of the specific implementations, there are two upper heads 11 and two lower heads 21.

[0032] As one of the specific implementations, the width of the head gap 3 is 2 mm.

[0033] As used in this utility model, the terms: first, second, etc., do not indicate any order, quantity or importance, but are only used for distinction.

[0034] As used in the present invention, the terms "a", "an", etc. do not indicate a limitation of quantity, but rather indicate the presence of at least one of the referenced object.

[0035] For example, the terms indicating orientation or position used in the present invention, such as top, bottom, side, longitudinal, transverse, middle, center, outside, inside, horizontal, vertical, left, right, above, below, etc., are intended to reflect relative positions rather than absolute positions.

[0036] As used in the present invention, terms such as approximately, overall, approximately, and similar are limiting terms that indicate that a feature exists but a certain deviation is allowed. The amount of the certain deviation allowed may vary depending on the specific context; for example, the specific context that may depend on the deviation of a dimension includes but is not limited to the relevant standards of dimensional tolerance.

Claims

1. A multi-slot sealing head for packaging a large-capacity solid-state sodium-ion battery, comprising an upper base (1) and a lower base (2); Its characteristics are: The upper base (1) and / or the lower base (2) can be moved so that the two are close to each other; a plurality of upper heads (11) are fixedly arranged on the upper base (1); a head gap (3) is arranged between two adjacent upper heads (11); a plurality of lower heads (21) are fixedly arranged on the lower base (2); a head gap (3) is arranged between two adjacent lower heads (21); the upper heads (11) and the lower heads (21) are arranged opposite to each other and correspond to each other one by one.

2. The multi-slot head for packaging a large-capacity solid-state sodium ion battery according to claim 1 is characterized in that: The upper sealing head (11) and the lower sealing head (21) are both provided with sealing head grooves (4).

3. The multi-slot head for packaging a large-capacity solid-state sodium ion battery according to claim 2 is characterized in that: The sealing groove (4) of the upper sealing head (11) is directly opposite to the sealing groove (4) of the lower sealing head (21).

4. The multi-slot head for packaging a large-capacity solid-state sodium ion battery according to claim 2 is characterized in that: The sealing groove (4) of the upper sealing head (11) and the sealing groove (4) of the lower sealing head (21) are staggered.

5. The multi-slot sealing head for packaging a large-capacity solid-state sodium ion battery according to claim 1 is characterized in that: There are two upper heads (11) and two lower heads (21).

6. The multi-slot sealing head for packaging a large-capacity solid-state sodium ion battery according to claim 1 is characterized in that: The width of the head gap (3) is 2 mm or 8 mm.

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