CN217823012U - Battery shell with dissolving mechanism, battery and high-capacity battery - Google Patents

Abstract

The utility model relates to a battery case, battery and large capacity battery with dissolve mechanism, this battery case include that at least one dissolves the mechanism, dissolve the mechanism and include isolation component and dissolve the subassembly, are equipped with the opening on the battery case, and the opening part is equipped with isolation component and dissolve the subassembly along keeping away from the inside direction of battery case in proper order, dissolves the fixed isolation component of subassembly, isolation component with the common sealed opening of dissolve the subassembly, when dissolving the subassembly and the outside electrolyte contact of battery case, isolation component is opened because of dissolving the mechanism, and the battery case is inside to link up with the outside. This patent is through setting up the dissolution mechanism on battery case, can realize a plurality of battery cell's electrolyte chamber and large capacity battery's electrolyte chamber intercommunication, simple structure, and need not mechanical operation.

Description

Battery shell with dissolving mechanism, battery and high-capacity battery

Technical Field

The utility model relates to a battery technology field especially relates to a battery case, battery and large capacity battery for having dissolve mechanism.

Background

The square battery with the maximum capacity of the lithium battery in the current market is 300Ah, the cylindrical battery with the maximum capacity is not more than 100Ah, under the background of 'carbon peak reaching' and 'carbon neutralization', the energy storage industry is expected to be greatly developed, but is influenced by the battery capacity, the lithium battery needs to be connected in series and parallel of a plurality of batteries when in energy storage application, so that connecting parts are various, the connecting steps are complex and cumbersome, the use amounts of a battery management system, a wire rod and a battery box are very large, and the energy storage cost is high.

The method for increasing the battery capacity is an effective way for reducing the existing energy storage system, the existing battery cores are combined in parallel to form the high-capacity lithium ion battery, the structure is simple, the operation is convenient, and the problem that how to communicate electrolyte cavities of a plurality of single batteries with an electrolyte cavity of the high-capacity battery is difficult to solve is solved.

Patent CN 214428755U discloses a battery case for reinjection liquid improves battery life, through be provided with the intercommunication portion that supplies the battery to carry out the electrolyte exchange with the external world on battery case's up end, realizes repeated supplementary electrolyte, connects check valve and waterproof breather valve on the intercommunication portion, and the check valve guarantees that electrolyte can not flow out, and waterproof breather valve prevents that external liquid from getting into in the check valve body.

In this manner, the case is provided with the communicating portion for refilling, but the structure is complicated, mechanical operation is required, and it is not possible to communicate the electrolyte chambers of the plurality of cells with the electrolyte chamber of the large-capacity battery.

Disclosure of Invention

Therefore, the battery opening can be opened without mechanical operation, and the communication between the electrolyte cavity of the single battery cell and the large-capacity battery is realized.

The technical scheme of the utility model as follows:

the utility model provides a battery case with dissolve mechanism, the last at least one of being equipped with of battery case dissolves the mechanism, it includes isolation component and dissolves the subassembly to dissolve the mechanism, the last opening that is equipped with of battery case, the opening part is equipped with in proper order along keeping away from the battery case direction isolation component with dissolve the subassembly, it is fixed to dissolve the subassembly isolation component, isolation component supports and presses dissolve the subassembly with jointly sealed the opening works as dissolve the subassembly with the outside electrolyte contact of battery case, isolation component because it dissolves and opens to dissolve the mechanism, the battery case is inside to link up with the outside.

Preferably, the material of the dissolving component is one or more of polymethyl methacrylate, polyvinyl chloride, polycarbonate or ABS plastic.

Preferably, the dissolution component is a polymethylmethacrylate sheet.

Preferably, the thickness of the dissolution component is no greater than 2mm.

Preferably, the isolation component is a sphere or a cone.

Preferably, a fixing portion is arranged outside the opening, the isolation assembly is arranged inside the fixing portion and does not contact with the fixing portion, and the dissolving assembly is connected with the fixing portion and abuts against the isolation assembly to seal the opening.

Preferably, the separator is a protective film insoluble in the electrolyte.

Preferably, the isolation component covers the opening, and the isolation component covers the surface of the dissolving component to seal the opening.

Preferably, a fixing part is arranged outside the opening to limit the dissolving mechanism to move.

Preferably, the thickness of the protective film is less than 0.1mm.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses a set up on monocell casing opening and dissolve the mechanism, when single battery is when natural state, dissolve the sealed casing opening of mechanism, electrolyte and external isolation in the battery, in arranging the electrolyte chamber of large capacity battery in with one or more battery cells, the mechanism of dissolving on the battery case is dissolved by outside electrolyte, and the casing opening is opened for battery cell's electrolyte chamber and large capacity battery's electrolyte chamber intercommunication, then a plurality of battery cells are in a shared electrolyte system.

The battery case with dissolve mechanism of this patent simple structure need not mechanical operation alright realize monomer battery's electrolyte chamber and the electrolyte chamber intercommunication of large capacity battery, and the suitability is strong.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention.

Fig. 1 is a schematic structural view of a battery case with a dissolution mechanism, in which the isolation component is a protective film.

Fig. 2 is a schematic cross-sectional view of a battery case having a dissolution mechanism in which the separator is a protective film.

Fig. 3 is a schematic diagram of a battery case with a dissolving mechanism, in which the isolating component is a ball.

Fig. 4 is a schematic cross-sectional view of a battery case with a dissolution mechanism where the isolation component is a sphere.

The reference numerals in the specification are as follows:

1-battery case, 2-battery anode, 3-battery cathode, 4-dissolving mechanism opening, 5-dissolving mechanism, 51-dissolving component, 52-isolating component, 6-fixing part and 7-case opening

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

The embodiment provides a battery case 1 with dissolve mechanism, dissolve mechanism 5 including dissolving subassembly 51 and isolation component 52, isolation component 52 is 0.1 mm's polypropylene film for thickness, dissolve subassembly 51 and be 2 mm's polymethyl methacrylate piece for thickness, the polypropylene film is complete to cover shell opening 7, and polyethylene film pastes and covers in dissolving subassembly 51 for shell opening's one side, the area of polypropylene film 52 and the area of polymethyl methacrylate piece 51 all are greater than shell opening 7's area, consequently, dissolve mechanism 5 can cover shell opening 7 in order to keep apart the inside electrolyte of battery cavity and external contact, shell opening 7 is equipped with fixed part 6 outward, in order to restrict the removal of dissolving mechanism 5 along the thickness direction, make the polymethyl methacrylate piece that covers the polypropylene film seal shell opening 7.

In operation, a plurality of batteries with a battery shell of a dissolving mechanism are placed in a large-capacity battery electrolyte cavity, the polymethyl methacrylate sheet 51 on the shell opening 7 gradually dissolves and disappears due to contacting with external electrolyte, meanwhile, under the action of fluid of the electrolyte, the polypropylene film 52 falls off from the shell opening 7, the shell opening 7 is communicated with the outside, the electrolyte in the large-capacity battery electrolyte cavity flows into the battery cavity through the shell opening 7, and therefore the electrolyte cavity in the battery is communicated with the electrolyte cavity of the large-capacity battery.

In this embodiment, the isolation component may also be a polyethylene film.

Example 2

As shown in fig. 3-4, in the embodiment, the opening 7 of the housing is circular, the isolation component 52 is a sphere, the fixing portion 6 is disposed outside the opening, the sphere 52 is located inside the fixing portion 6, a gap is left between the fixing portion 6 and the sphere 52, the dissolving component 51 is a polymethyl methacrylate sheet with a thickness of 3mm, the diameter of the sphere 52 is larger than that of the opening 7 of the housing, the polymethyl methacrylate 51 can cover the opening 7 of the housing, the polymethyl methacrylate 51 presses the sphere 52, so that the sphere 52 seals the opening 7 of the housing, the polymethyl methacrylate sheet 51 and the fixing portion 6 are fixed by threads or clamping, and the sphere 52 can be made of glass or metal.

In operation, place a plurality of batteries that have this casing 7 that dissolves the mechanism in large capacity battery electrolyte cavity, polymethyl methacrylate piece 51 dissolves the disappearance because of contacting external electrolyte gradually, because spheroid 52 no longer is supported by polymethyl methacrylate piece 51 and is pressed, and fixed part 6 and polymethyl methacrylate piece 51 have certain clearance, the spheroid takes place to remove, casing opening 7 part or whole and external intercommunication, inside electrolyte in the large capacity battery electrolyte cavity flows into the battery cavity through casing opening 7, thereby make the inside electrolyte chamber of battery and the electrolyte chamber intercommunication of large capacity battery.

All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (12)

1. The utility model provides a battery case with dissolve mechanism, its characterized in that, be equipped with at least one on the battery case and dissolve the mechanism, it includes isolation component and dissolves the subassembly to dissolve the mechanism, be equipped with the opening on the battery case, the opening part is equipped with in proper order along keeping away from the battery case direction isolation component with dissolve the subassembly, it is fixed to dissolve the subassembly isolation component, isolation component supports and presses dissolve the subassembly with jointly sealed the opening, work as dissolve the subassembly with the outside electrolyte contact of battery case, isolation component because it dissolves and opens to dissolve the mechanism, the inside and outside link up of battery case.

2. The battery case with a solvent mechanism as in claim 1, wherein the solvent component is made of one of polymethyl methacrylate, polyvinyl chloride, polycarbonate or ABS plastic.

3. The battery case with a lysing mechanism according to claim 2, wherein said lysing assembly is a polymethylmethacrylate sheet.

4. The battery case with lysing mechanism according to claim 3, wherein said lysing assembly has a thickness of no more than 2mm.

5. The battery case with dissolution mechanism of claim 3, wherein the isolation component is a sphere or cone.

6. The battery case with a dissolution mechanism of claim 5, wherein a fixing portion is provided outside the opening, the isolation component is provided inside the fixing portion and does not contact the fixing portion, and the dissolution component is connected to the fixing portion and presses against the isolation component to seal the opening.

7. The battery case with dissolution mechanism as recited in claim 1, wherein the separator is insoluble in electrolyte protective film.

8. The battery housing with a lysing mechanism according to claim 7, wherein said isolating member covers said opening and covers a side of said lysing member opposite to said opening, sealing said opening.

9. The battery case with dissolution mechanism of claim 8, wherein a fixation portion is provided outside the opening to limit movement of the dissolution mechanism.

10. The battery case with dissolution mechanism of claim 7, wherein the protective film thickness is less than 0.1mm.

11. A battery comprising an electrode assembly and a battery case according to any one of claims 1 to 10, said electrode assembly being disposed within an enclosure chamber of said case.

12. A large capacity battery comprising a can, a cap plate and at least one battery according to claim 11.

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