CN215184235U

CN215184235U - Rechargeable battery with magnesium alloy shell

Info

Publication number: CN215184235U
Application number: CN202120710178.0U
Authority: CN
Inventors: 张锐
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2021-12-14
Anticipated expiration: 2031-04-07

Abstract

The utility model provides a rechargeable battery with magnesium alloy shell, including casing, apron, battery roll core, electrolyte, casing and apron are made by magnesium alloy material, and casing one end is equipped with the opening, thereby the apron seals in the opening part formation magnesium alloy shell of casing, and the battery rolls up core and electrolyte and all is located inside the magnesium alloy shell, the apron is equipped with apron positive pole and apron negative pole, the apron positive pole with the anodal utmost point ear that the battery rolled up the core links to each other, the apron negative pole with the negative pole utmost point ear that the core was rolled up to the battery links to each other. The utility model has the advantages that: the utility model discloses a magnesium alloy shell's thickness only 20% ~50% of aluminum alloy shell, can increase rechargeable battery 5% ~30% capacity, magnesium alloy shell has good protecting against shock characteristic, has good heat conduction and can be fine distribute away the heat that can produce among the rechargeable battery charge-discharge process fast for rechargeable battery has better security characteristic.

Description

Rechargeable battery with magnesium alloy shell

Technical Field

The utility model relates to a can charge lithium cell technical field especially relates to a can charge battery with magnesium alloy shell.

Background

The rechargeable battery is widely applied as a mature product, the shell of the existing rechargeable battery is made of an aluminum alloy material, the thickness of the aluminum alloy shell is thick, the battery capacity cannot be improved, the impact resistance is weak, the heat dissipation performance of the aluminum alloy shell is poor, and the requirements of users cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model provides a rechargeable battery with magnesium alloy shell, including casing, apron, battery roll core, electrolyte, the casing with the apron is made by the magnesium alloy material, the casing is equipped with the opening, the apron seal in thereby the opening part of casing forms the magnesium alloy shell, the battery roll core with electrolyte all is located inside the magnesium alloy shell, this rechargeable battery still includes insulating piece, apron positive pole and apron negative pole, the insulating piece install in the apron internal surface, the apron positive pole with the apron negative pole is all installed on the insulating piece, the apron positive pole with the anodal utmost point ear of battery roll core links to each other, the apron negative pole with the negative pole utmost point ear of battery roll core links to each other.

As a further improvement of the present invention, the cover plate is welded to the opening of the housing.

As a further improvement, the welding mode comprises tungsten electrode argon arc welding, consumable electrode inert gas shielded welding, laser welding, electron beam welding, friction stir welding and resistance welding.

As a further improvement, the opening of the housing is provided with a rolling groove, the cover plate is embedded into the rolling groove and then is stamped and sealed, so that the cover plate is sealed at the opening of the housing.

As a further improvement of the utility model, the magnesium alloy shell is square.

As a further improvement of the utility model, the magnesium alloy shell is cylindrical.

As a further improvement of the utility model, the inner surface of the magnesium alloy shell is provided with a protective film or a coating.

As a further improvement of the utility model, the rechargeable battery further comprises a magnesium alloy outer sleeve, the rechargeable battery is arranged in the magnesium alloy outer sleeve, and the magnesium alloy outer sleeve is provided with a through hole and a handle.

The utility model has the advantages that: the utility model discloses a magnesium alloy shell's thickness only 20% ~50% of aluminum alloy shell can increase rechargeable battery 5% ~30% capacity, and magnesium alloy shell has good protecting against shock characteristic, has good heat conduction and can be fine distribute away the heat that produces among the rechargeable battery charge-discharge process fast for rechargeable battery has better security characteristic.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the present invention;

FIG. 2 is a schematic view of a cover plate structure;

fig. 3 is a schematic structural diagram of another embodiment of the present invention.

Detailed Description

The utility model discloses a rechargeable battery with magnesium alloy shell, including casing 1, apron 2, battery roll core, electrolyte, casing 1 with apron 2 is made by the magnesium alloy material, casing 1 is equipped with the opening, apron 2 seal in thereby casing 1's opening part forms the magnesium alloy shell, the battery roll core with electrolyte all is located inside the magnesium alloy shell, this rechargeable battery still include insulating piece (in the figure), apron positive 21 and apron negative pole 22, the insulating piece install in 2 internal surfaces of apron, apron positive 21 with apron negative pole 22 is all installed on the insulating piece, apron positive 21 with the anodal utmost point ear that the battery rolled up the core links to each other, apron negative pole 22 with the negative pole utmost point ear that the battery rolled up the core links to each other.

The insulating piece is made by elastic material, the insulating piece is located apron 2 with between the opening of casing 1, the insulating piece plays sealed effect, and this insulating piece is made by rubber materials for example.

The first way of implementing the cover plate 2 closed at the opening of the casing 1: the cover plate 2 is welded at the opening of the shell 1 to prevent the electrolyte from leaking.

The welding modes comprise Tungsten Inert Gas (TIG) welding, Metal Inert Gas (MIG) welding, laser welding (LBW), Electron Beam Welding (EBW), Friction Stir Welding (FSW) and resistance welding (RSW).

Second implementation of the cover 2 closing the opening of the housing 1: the opening of the shell 1 is provided with a rolling groove, and the cover plate 2 is embedded into the rolling groove and then is stamped and sealed, so that the cover plate 2 is sealed at the opening of the shell 1.

As shown in fig. 1 and 2, the magnesium alloy housing may be square.

The magnesium alloy housing may also be cylindrical, as shown in fig. 3.

In the present invention, the number of the openings may be one, or two, and it is explained that the opening is one, the opening is provided at one end of the housing 1, the number of the insulation sheet and the cover plate 2 is one, and the opening is one as shown in fig. 1 to 3.

Under the condition that the opening is two, two openings are located respectively 1 both ends of casing, the insulating piece with 2 quantity of apron are two, apron 2 includes first apron and second apron, the insulating piece includes first insulation piece and second insulating piece, first apron seals in an opening part, the second apron seals in another opening part, first insulation piece install in first apron internal surface, the second insulating piece install in second apron internal surface, apron anodal 21 is installed on the first insulation piece, apron negative pole 22 is installed on the second insulation piece.

The rechargeable battery also comprises a safety pressure relief mechanism, wherein the safety pressure relief mechanism comprises a hole and a sealing piece, the magnesium alloy shell is provided with the hole, for example, the hole can be arranged on the cover plate 2 or the shell 1, the sealing piece seals the hole, and when the air pressure in the magnesium alloy shell rises to a certain pressure, the sealing piece is opened, so that the purpose of pressure relief is achieved.

As an embodiment of the present invention, the closing member is a film, and when the pressure inside the magnesium alloy shell rises to a certain pressure, the film is broken, so as to achieve the purpose of pressure relief.

As another embodiment of the present invention, the closing member is a bead, the bead is located in the hole, and the bead and the gap between the holes are filled with the sealant. When the air pressure in the magnesium alloy shell rises to a certain pressure, the beads are popped out, and the purpose of pressure relief is achieved.

When the number of the thermistors is one, the thermistors are arranged between the cover plate anode 21 and the battery roll core anode lug or between the cover plate cathode 22 and the battery roll core cathode lug; when the number of the thermistors is two, one thermistor is arranged between the cover plate anode 21 and the battery roll core anode lug, and the other thermistor is arranged between the cover plate cathode 22 and the battery roll core cathode lug.

When the temperature of the positive electrode and the negative electrode of the battery roll core or the positive electrode 21 and the negative electrode 22 of the cover plate of the rechargeable battery is too high in the charging and discharging processes, the thermistor can cut off the circuit by itself, and the purpose of protecting the rechargeable battery is achieved.

The inner wall of the magnesium alloy shell is subjected to chemical treatment, anodic or plasma micro-arc anodic and metal coating treatment, so that a protective film or coating is formed on the inner surface of the magnesium alloy shell, the magnesium alloy shell and electrolyte or other materials of a rechargeable battery can be prevented from carrying out chemical reaction for a long time through the protective film or coating, and the rechargeable battery with the magnesium alloy shell can be effectively used for a long time. The protective film or coating is prior art and will not be described in detail herein.

The rechargeable battery also comprises a magnesium alloy outer sleeve, wherein the magnesium alloy battery is arranged in the magnesium alloy outer sleeve, and the magnesium alloy outer sleeve is provided with a through hole and a handle. The magnesium alloy jacket is provided with a through hole, so that the magnesium alloy battery can dissipate heat conveniently. The user can very conveniently move the magnesium alloy outer sleeve by lifting the handle. Namely, the magnesium alloy battery is more convenient to move through the magnesium alloy jacket.

The magnesium alloy has a specific gravity of two thirds of that of the aluminum alloy and high strength.

The utility model discloses a magnesium alloy shell's thickness only 20% ~50% of aluminum alloy shell can increase rechargeable battery 5% ~30% capacity, and magnesium alloy shell has good protecting against shock characteristic, has good heat conduction and can be fine distribute away the heat that produces among the rechargeable battery charge-discharge process fast for rechargeable battery has better security characteristic.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. A rechargeable battery having a magnesium alloy can, characterized in that: including casing (1), apron (2), battery roll core, electrolyte, casing (1) with apron (2) are made by the magnesium alloy material, casing (1) is equipped with the opening, apron (2) seal in thereby the opening part of casing (1) forms the magnesium alloy shell, the battery roll core with electrolyte all is located inside the magnesium alloy shell, this rechargeable battery still include insulating piece, apron positive pole (21) and apron negative pole (22), the insulating piece install in apron (2) internal surface, apron positive pole (21) with apron negative pole (22) are all installed on the insulating piece, apron positive pole (21) with the anodal utmost point ear of battery roll core links to each other, apron negative pole (22) with the negative pole utmost point ear of battery roll core links to each other.

2. The rechargeable battery according to claim 1, wherein: the cover plate (2) is welded at the opening of the shell (1).

3. The rechargeable battery according to claim 1, wherein: the opening of the shell (1) is provided with a rolling groove, and the cover plate (2) is embedded into the rolling groove and then is stamped and sealed, so that the cover plate (2) is sealed at the opening of the shell (1).

4. A rechargeable battery according to any of claims 1 to 3, characterised in that: the opening is one, the opening is located casing (1) one end, the insulating piece with apron (2) quantity is one.

5. A rechargeable battery according to any of claims 1 to 3, characterised in that: the opening is two, and two openings are located respectively casing (1) both ends, the insulating piece with apron (2) quantity is two, apron (2) are including first apron and second apron, the insulating piece includes first insulation piece and second insulating piece, first apron seals in an opening part, the second apron seals in another opening part, first insulation piece install in first apron internal surface, the second insulating piece install in second apron internal surface, install apron positive pole (21) on the first insulation piece, install apron negative pole (22) on the second insulation piece.

6. The rechargeable battery according to claim 1, wherein: the rechargeable battery also comprises a safety pressure relief mechanism, wherein the safety pressure relief mechanism comprises a hole and a sealing piece, the hole is formed in the magnesium alloy shell, the sealing piece seals the hole, and when the air pressure in the magnesium alloy shell rises to a certain pressure, the sealing piece is opened, so that the purpose of pressure relief is achieved.

7. The rechargeable battery according to claim 6, wherein: the closure is a film.

8. The rechargeable battery according to claim 6, wherein: the closing piece is a bead, the bead is positioned in the hole, and a gap between the bead and the hole is filled with a sealing glue.

9. The rechargeable battery according to claim 1, wherein: the rechargeable battery also comprises a thermistor, and when the number of the thermistors is one, the thermistor is arranged between the cover plate anode (21) and the battery roll core anode lug, or the thermistor is arranged between the cover plate cathode (22) and the battery roll core cathode lug; when the number of the thermistors is two, one thermistor is arranged between the cover plate anode (21) and the battery roll core anode lug, and the other thermistor is arranged between the cover plate cathode (22) and the battery roll core cathode lug; the insulating piece is made by elastic material, the insulating piece is located apron (2) with between the opening of casing (1), the insulating piece plays sealed effect.

10. The rechargeable battery according to claim 1, wherein: and a protective film or coating is arranged on the inner surface of the magnesium alloy shell.